Sanyo Kms2472 User Manual

TECHNICAL & SERVICE MANUAL  
INDOOR UNIT : KMS0772  
KMS0972  
FILE NO.  
KMS1272  
KMS1872  
KMS2472  
Destination: North America  
DC INVERTER MULTI-SYSTEM AIR CONDITIONER  
Capacity  
Indoor Model No.  
KMS0772  
Product Code No.  
1 852 099 87  
1 852 099 88  
1 852 099 89  
1 852 099 90  
1 852 099 91  
7,500BTU / h  
9,000BTU / h  
11,900BTU / h  
17,500BTU / h  
24,200BTU / h  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
Wall Mounted Type Indoor Unit  
< Applicable Multi-Outdoor Units >  
CM1972 (3-room multi unit)  
CM2472 (4-room multi unit)  
CM3172 (4-room multi unit)  
CLM1972 (3-room multi unit)  
CLM2472 (4-room multi unit)  
CLM3172 (4-room multi unit)  
N
KMS0772  
KMS0972  
KMS1272  
NOTE  
For details about the combinations, refer to  
Unit Combination Table in the T. Service  
Manual for the Multi Outdoor Units.  
IMPORTANT  
These air conditioners employ new  
refrigerant R410A.  
Pay special attention when  
servicing the unit.  
N
KMS1872  
KMS2472  
REFERENCE NO. SM700665-02  
Table of Contents  
Page  
...................................................................................  
4
5
APPLICABLE MULTI-OUTDOOR UNITS  
1. OPERATING RANGE  
...................................................................................................................  
2. SPECIFICATIONS  
.............................................................................................................  
6
16  
21  
2-1. Unit Specifications  
2-2. Major Component Specifications  
2-3. Other Component Specifications  
.......................................................................................  
.......................................................................................  
....................................................................................................................  
22  
24  
25  
30  
3. DIMENSIONAL DATA  
4. REFRIGERANT FLOW DIAGRAM  
..................................................................................................  
4-1. Refrigerant Flow Diagram  
5. PERFORMANCE DATA  
5-1. Air Throw Distance Charts  
.......................................................................................................  
6. ELECTRICAL DATA  
....................................................................................................  
6-1. Electric Wiring Diagrams  
7. FUNCTIONS  
...........................................................................................................  
...........................................................................................................  
32  
34  
7-1. Operation Functions  
7-2. Protective Functions  
8.TROUBLESHOOTING  
..........................................................  
35  
35  
38  
39  
40  
8-1. Precautions before Performing Inspection or Repair  
.................................................................................................  
8-2. Method of Self-Diagnostics  
..............................................................................  
..........................................................................................  
..........................................................  
8-3. Checking the Indoor and Outdoor Units  
8-4. Trouble Diagnosis of Fan Motor  
8-5. Noise Malfunction and Electromagnetic Interference  
.........................................................................................  
A-1  
A-2  
APPENDIX A INSTRUCTION MANUAL  
............................................................................  
APPENDIX B INSTALLATION INSTRUCTIONS  
3
APPLICABLE MULTI-OUTDOOR UNITS  
Multi-Outdoor Unit  
Indoor Unit  
3-Room  
CM1972  
YES  
4-Room  
CM2472  
YES  
4-Room  
CM3172  
YES  
3-Room  
CLM1972  
YES  
4-Room  
CLM2472  
YES  
4-Room  
CLM3172  
YES  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
YES  
NO  
YES  
YES  
NO  
YES  
YES  
4
1. OPERATING RANGE  
Combination with cooling outdoor unit CM1972, CM2472 or CM3172  
Temperature  
Maximum  
Minimum  
Indoor Air Intake Temp.  
95 °F D.B. / 71 °F W.B.  
67 °F D.B. / 57 °F W.B.  
Outdoor Air Intake Temp.  
115 °F D.B.  
Cooling  
67 °F D.B.  
Combination with low ambient cooling outdoor unit CLM1972, CLM2472 or CM3172  
Temperature  
Maximum  
Minimum  
Indoor Air Intake Temp.  
95 °F D.B. / 71 °F W.B.  
67 °F D.B. / 57 °F W.B.  
Outdoor Air Intake Temp.  
115 °F D.B.  
*1  
Cooling  
*1 32 °F D.B.: When combined with KMS1872 or KMS2472  
23 °F D.B.: When combined with KMS0772, KMS0972 or KMS1272  
5
2. SPECIFICATIONS  
2-1. Unit Specifications  
Indoor Unit  
KMS0772  
< 230V >  
Type  
Wall Mounted Type Indoor Unit  
230V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
7,500  
Capacity  
BTU/h  
kW  
2.20  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
241 (410)  
2.77  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.11  
V
A
W
25  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto and 3 steps  
Manual  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
33 / 30 / 27 / 23  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.8 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
6
Indoor Unit  
KMS0772  
< 208V >  
Type  
Wall Mounted Type Indoor Unit  
208V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
7,500  
Capacity  
BTU/h  
kW  
2.20  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
241 (410)  
2.77  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.12  
V
A
W
25  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
33 / 30 / 27 / 23  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.82 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
7
Indoor Unit  
KMS0972  
< 230V >  
Type  
Wall Mounted Type Indoor Unit  
230V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
9,000  
2.65  
259 (440)  
3.4  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.15  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
34 / 31 / 28 / 23  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.82 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
8
Indoor Unit  
KMS0972  
< 208V >  
Type  
Wall Mounted Type Indoor Unit  
208V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
9,000  
2.65  
259 (440)  
3.4  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.17  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
34 / 31 / 28 / 23  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.82 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
9
Indoor Unit  
KMS1272  
< 230V >  
Type  
Wall Mounted Type Indoor Unit  
230V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
11,900  
3.50  
282 (480)  
4.26  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.15  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
36 / 33 / 29 /25  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.82 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
10  
Indoor Unit  
KMS1272  
< 208V >  
Type  
Wall Mounted Type Indoor Unit  
208V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
11,900  
3.50  
282 (480)  
4.26  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.17  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
36 / 33 / 29 / 25  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
3/8 (9.52)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-7/32 (285)  
32-15/32 (825)  
7-7/16 (189)  
13-25/32 (350)  
35-7/16 (900)  
10-1/32 (255)  
19.8 (9.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
24.3 (11.0)  
Shipping Volume  
cu.ft (m3)  
2.82 (0.08)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
11  
Indoor Unit  
KMS1872  
< 230V >  
Type  
Wall Mounted Type Indoor Unit  
230V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
17,500  
5.15  
500 (850)  
4.89  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.15  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
41 / 38 / 34 / 28  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
1/2 (12.7)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
33.1 (15.0)  
Shipping Volume  
cu.ft (m3)  
4.23 (0.12)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
12  
Indoor Unit  
KMS1872  
< 208V >  
Type  
Wall Mounted Type Indoor Unit  
208V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
17,500  
5.15  
500 (850)  
4.89  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.17  
V
A
W
35  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
41 / 38 / 34 / 28  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
1/2 (12.7)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
33.1 (15.0)  
Shipping Volume  
cu.ft (m3)  
4.23 (0.12)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
13  
Indoor Unit  
KMS2472  
< 230V >  
Type  
Wall Mounted Type Indoor Unit  
230V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
24,200  
7.10  
541 (920)  
4.89  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.20  
V
A
W
45  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
44 / 41 / 38 / 30  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
5/8 (15.88)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
33.1 (15.0)  
Shipping Volume  
cu.ft (m3)  
4.23 (0.12)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
14  
Indoor Unit  
KMS2472  
< 208V >  
Type  
Wall Mounted Type Indoor Unit  
208V Single-Phase 60Hz  
Voltage Rating  
Performance  
Cooling  
24,200  
7.10  
541 (920)  
4.89  
Capacity  
BTU/h  
kW  
Air Circulation (High)  
Moisture Removal (High)  
ft3/min (m3/h)  
Pints/h  
Electrical Rating  
Available Voltage Range  
Running Amperes  
Power Input  
Cooling  
187 to 253  
0.22  
V
A
W
45  
Features  
Control / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
24-Hour ON or OFF Timer Control  
Auto and 3 steps  
Manual  
Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor  
Horizontal  
Vertical  
Auto  
Air Filter  
Washable, Anti-Mold  
R410A  
Refrigerant  
Operation Sound  
Indoor : Hi/Me/Lo/Qt*  
dB-A  
44 / 41 / 38 / 30  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Refrigerant  
Tube Diameter  
Refrigerant Tubing Kit / Accessories  
Flare Type  
1/4 (6.35)  
5/8 (15.88)  
Narrow tube  
Wide tube  
inch (mm)  
inch (mm)  
Optional / Air Clean Filter  
Dimensions & Weight  
Unit Dimensions  
Height  
Width  
Depth  
Height  
Width  
Depth  
Net  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
inch(mm)  
Ib. (kg)  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Package Dimensions  
Weight  
Shipping  
Ib. (kg)  
33.1 (15.0)  
Shipping Volume  
cu.ft (m3)  
4.23 (0.12)  
DATASUBJECTTOCHANGEWITHOUTNOTICE.  
15  
2-2. Major Component Specifications  
2-2-1. Indoor Unit  
Indoor Unit  
KMS0772  
Control PCB  
Part No.  
CB-KMS0772  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
1 ... D3-11/16 / L24-31/ 32 (D94 / L634)  
Q'ty ... Dia. and Length  
inch (mm)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-39CVL-D847-4 ... 1  
No. of Poles  
8
1,050  
47  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
(Ambient Temp. 68 oF (20 oC))  
Safety Device  
W
Ohm  
-
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400+/-7%  
(Ambient Temp. 77 oF (25 oC))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
2.02 (0.188)  
ft2 (m2)  
DATASUBJECTTOCHANGE WITHOUTNOTICE.  
16  
Indoor Unit  
KMS0972  
Control PCB  
Part No.  
CB-KMS0972  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
1 ... D3-11/16 / L24-31/ 32 (D94 / L634)  
Q'ty ... Dia. and Length  
inch (mm)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-39CVL-D847-4 ... 1  
No. of Poles  
8
1,100  
47  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
(Ambient Temp. 68 oF (20 oC))  
Safety Device  
W
Ohm  
-
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400+/-7%  
(Ambient Temp. 77 oF (25 oC))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
2.02 (0.188)  
ft2 (m2)  
DATASUBJECTTOCHANGE WITHOUTNOTICE.  
17  
Indoor Unit  
KMS1272  
Control PCB  
Part No.  
CB-KMS1272  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
1 ... D3-11/16 / L24-31/ 32 (D94 / L634)  
Q'ty ... Dia. and Length  
inch (mm)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-39CVL-D847-4 ... 1  
No. of Poles  
8
1,200  
47  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
(Ambient Temp. 68 oF (20 oC))  
Safety Device  
W
Ohm  
-
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400+/-7%  
(Ambient Temp. 77 oF (25 oC))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
2.02 (0.188)  
ft2 (m2)  
DATASUBJECTTOCHANGE WITHOUTNOTICE.  
18  
Indoor Unit  
KMS1872  
Control PCB  
Part No.  
CB-KMS1872  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
1 ... D3-11/16 / L33-9/ 32 (D94 / L845)  
Q'ty ... Dia. and Length  
inch (mm)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-39CVL-D847-2 ... 1  
No. of Poles  
8
1,200  
30  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
(Ambient Temp. 68 oF (20 oC))  
Safety Device  
W
Ohm  
-
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400+/-7%  
(Ambient Temp. 77 oF (25 oC))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
3.07 (0.285)  
ft2 (m2)  
DATASUBJECTTOCHANGE WITHOUTNOTICE.  
19  
Indoor Unit  
KMS2472  
Control PCB  
Part No.  
CB-KMS2472  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
1 ... D3-11/16 / L33-9/ 32 (D94 / L845)  
Q'ty ... Dia. and Length  
inch (mm)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-39CVL-D847-2 ... 1  
No. of Poles  
8
1,300  
30  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
(Ambient Temp. 68 oF (20 oC))  
Safety Device  
W
Ohm  
-
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400+/-7%  
(Ambient Temp. 77 oF (25 oC))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
3.07 (0.285)  
ft2 (m2)  
DATASUBJECTTOCHANGE WITHOUTNOTICE.  
20  
2-3. Other Component Specifications  
Quantity of Sensor  
KMS1272  
Model No.  
Sensor Name  
of sensor  
KMS0772  
KMS0972  
KMS1872  
KMS2472  
PTM-D51H-  
1
1
0
1
0
0
1
0
1
S3 TH2  
Indoor air temp sensor  
PTM-D51H-  
0
S3-2 TH2  
10  
9
8
7
6
5
4
3
2
1
0
50  
59 68 77 86 95 104  
(10) (15) (20) (25) (30) (35) (40)  
Temperature °F (°C)  
Quantity of Sensor  
Model No.  
of sensor  
Sensor Name  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
PTM-D51H-  
S3 TH1  
1
0
1
0
1
0
0
1
0
1
Indoor heat exchanger sensor  
PTM-D51H-  
S3-2 TH1  
200  
180  
160  
140  
120  
100  
80  
60  
40  
20  
0
32 50 68 86 104 122 140 158 176 194  
(0) (10)(20) (30) (40)(50) (60) (70)(80) (90)  
Temperature °F (°C)  
21  
3. DIMENSIONAL DATA  
Indoor Unit ꢀ KMS0772  
KMS0972  
KMS1272  
Unit: inch(mm)  
22  
Indoor Unit  
KMS1872  
KMS2472  
3 1 / 3 2  
1 - 1 5 / 1 6  
1 - 2 5 / 3 2  
3 - 9 / 1 6  
3 - 9 / 1 6  
1 - 2 5 / 3 2  
1 - 1 5 / 1 6  
1 1 - 2 3 / 3 2  
2 - 3 / 8  
9 / 3 2  
5 - 9 / 3 2  
1 - 1 / 4  
1 - 3 1 / 3 2  
1 1 - 2 3 / 3 2 ( 2 9 8 )  
2 - 3 / 4  
7 - 2 3 / 3 2  
Unit: inch(mm)  
23  
4. REFRIGERANT FLOW DIAGRAM  
4-1. Refrigerant Flow Diagram  
Indoor Unitꢀ KMS0772  
KMS0972  
KMS1272  
Indoor unit  
O.D. 3/8" (9.52 mm)  
Indoor heat  
exchanger  
O.D. 1/4" (6.35 mm)  
Cooling cycle  
Cooling cycle  
Cooling cycle  
Indoor Unitꢀ KMS1872  
Indoor unit  
O.D. 1/2" (12.7 mm)  
Indoor heat  
exchanger  
O.D. 1/4" (6.35 mm)  
Indoor Unitꢀ KMS2472  
Indoor unit  
O.D. 5/8" (15.88 mm)  
Indoor heat  
exchanger  
O.D. 1/4" (6.35 mm)  
24  
5. PERFORMANCE DATA  
5-1. Air Throw Distance Charts  
Indoor Unitꢀ KMS0772  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15  
0
0
5
20  
25  
30  
5
10  
15  
: Flap angle 0  
°
,
°
: Axis air velocity 0°  
: Flap angle 30  
,
: Axis air velocity 30°  
25  
Indoor Unitꢀ KMS0972  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15  
0
0
5
20  
25  
30  
5
10  
15  
: Flap angle 0  
°
,
°
: Axis air velocity 0°  
: Flap angle 30  
,
: Axis air velocity 30°  
26  
Indoor Unitꢀ KMS1272  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15  
0
0
5
20  
25  
30  
5
10  
15  
: Flap angle 0  
°
,
°
: Axis air velocity 0°  
: Flap angle 30  
,
: Axis air velocity 30°  
27  
Indoor Unitꢀ KMS1872  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15  
0
0
5
20  
25  
30  
5
10  
15  
: Flap angle 0  
°
,
°
: Axis air velocity 0°  
: Flap angle 30  
,
: Axis air velocity 30°  
28  
Indoor Unitꢀ KMS2472  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15  
0
0
5
20  
25  
30  
5
10  
15  
: Flap angle 0  
°
,
°
: Axis air velocity 0°  
: Flap angle 30  
,
: Axis air velocity 30°  
29  
6. ELECTRICAL DATA  
6-1. Electric Wiring Diagrams  
Indoor UnitKMS0772 KMS0972 KMS1272  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
TERMINAL BASE  
EVAPORATOR  
CONNECTOR  
1
2
3
BLK  
WHT  
RED  
S1  
AC2  
AC1  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
RED  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
1 1  
2 2  
3 3  
4 4  
5 5  
RED  
1 1  
2 2  
3 3  
4 4  
5 5  
PNK  
BLU  
BRN  
YEL  
FLAP  
FLAP  
5P (WHT)  
LAMP  
10P(  
)
WHT  
FLAP MOTOR  
CONTROLLER  
ROOM THERMISTOR  
1 1  
2 2  
3 3  
4 4  
BLK  
BLK  
BLK  
BLK  
ROOM/COIL  
4P(  
)
WHT  
RED 1 1  
2 2  
BLK  
WHT  
YEL  
BLU  
COIL THERMISTOR  
DCM  
3 3  
4 4  
5 5  
6 6  
FM  
6P (BLU)  
1 1  
2 2  
3 3  
1 1  
2 2  
3 3  
WHT  
RED  
BLK  
ION  
3P (  
)
FAN MOTOR  
WHT  
CONNECTOR  
HA  
JEM-A  
4P (WHT)  
1 2 3 4  
1 2 3 4  
1 2 3 4  
ION  
ION ASSY  
TERMINAL  
8FA2-5257-69700-0  
30  
Indoor Unitꢀ KMS1872 KMS2472  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
TERMINAL BASE  
EVAPORATOR  
CONNECTOR  
1
2
3
BLK  
WHT  
RED  
S1  
AC2  
AC1  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
RED  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
1 1  
2 2  
3 3  
4 4  
5 5  
RED  
1 1  
2 2  
3 3  
4 4  
5 5  
PNK  
BLU  
BRN  
YEL  
FLAP  
FLAP  
5P (WHT)  
LAMP  
10P(  
)
WHT  
FLAP MOTOR  
CONTROLLER  
ROOM THERMISTOR  
1 1  
2 2  
3 3  
4 4  
BLK  
BLK  
BLK  
BLK  
ROOM/COIL  
4P(  
)
WHT  
RED 1 1  
2 2  
BLK  
WHT  
YEL  
BLU  
COIL THERMISTOR  
DCM  
3 3  
4 4  
5 5  
6 6  
FM  
6P (BLU)  
1 1  
2 2  
3 3  
ION  
3P (  
)
FAN MOTOR  
WHT  
HA  
JEM-A  
4P (WHT)  
1 2 3 4  
1 2 3 4  
1 2 3 4  
ION  
ION ASSY  
TERMINAL  
8FA2-5257-70500-0  
31  
7. FUNCTIONS  
7-1. Operation Functions  
Emergency operation  
SENSOR DRY  
Emergency operation is available when the remote  
controller malfunctions, has been lost, or otherwise  
cannot be used.  
ꢀ During DRY operation, the system adjusts the room  
temperature and fan speed according to the conditions in the  
room, in order to maintain a comfortable room environment.  
SENSOR DRY operation  
To operate the system, press the OPERATION button,  
which is also used as the receiver, below the unit display.  
Each time this button is pressed, the OPERATION lamp  
changes color to indicate the type of operation. Select the  
desired type of operation.  
ꢀꢀ DRY operation is as shown in the figure below.  
Load  
COOL zone  
A zone  
COOL  
STOP  
(Lamp Off)  
(GREEN)  
B zone  
ꢀ The set temperature is 4°F(2°C) below the detected room  
temperature in the case of cooling operation.  
Conditions are monitored at all  
times when the room temperature  
is below 59°F(15°C).  
DRY A  
ꢀ The compressor operation frequency varies.  
ꢀ The indoor fan operates with 1/f fluctuation.  
DRY B  
ꢀ The compressor operates at a low operating frequency.  
ꢀ The indoor fan operates with 1/f fluctuation.  
Monitor  
ꢀ Monitoring operation takes place when the room temperature  
is below 59°F  
temperature.  
(15°C), or more than 5°F(3°C) below the set  
ꢀ When the monitoring range is entered, the compressor stops,  
and the indoor fan operates with 1/f fluctuation.  
NOTE  
(CLxx models only)  
The Sensor Dry operation during the Low Ambient Cooling  
Mode (outside air temperature:59°F(15°C) or lower) is as  
follows.  
DRY A  
and  
DRY B  
The compressor operates a cycle of 3 minutes ON and 6  
minutes OFF repeatedly.  
PAM- control  
ꢀ In order to further improve inverter performance, control is  
switched between PWM control at low operation speeds, and  
PAM control at high operation speeds, making the most  
effective use of power.  
32  
HIGH POWER  
NIGHT SETBACK  
This function acts to raise the power but keeps the AC system in  
the same operating mode.  
ꢀ When NIGHT SETBACK operation is set, the temperature and  
fan speed settings will be adjusted automatically to allow  
comfortable sleep.  
ꢀ When NIGHT SETBACK operation is set, " mark" appears on  
the remote controller. The main unit display lamp also becomes  
dimmer.  
This function is set with the HIGH POWER button on the remote  
controller.  
(It can be set regardless of the temperature and fan speed  
settings.)  
HIGH POWER operation from remote controller  
COOL and DRY modes  
ꢀ The unit operates at maximum output for 30 minutes,  
When the night setback mode is selected, the air conditioner  
automatically raises the temperature setting 2°F(1°C) when 30  
minutes have passed after the selection was made, and then  
another 2°F(1°C) after another 30 minutes have passed,  
regardless of the indoor temperature when night setback was  
selected. This enables you to save energy without sacrificing  
comfort. This function is convenient when gentle cooling is  
needed.  
regardless of the desired temperature.  
ꢀ The fan speed is 1 step above "High."  
Frequency  
MAX  
2°F(1°C)  
Setting  
Time  
0
temperature  
2°F(1°C)  
30 min.  
5 min.  
End  
Press the NIGHT  
SETBACK button  
30 min.  
30 min.  
Start  
Time  
NOTE  
ꢀ When HIGH POWER operation ends, the unit operates at low  
Hz for 5 minutes, regardless of the thermostat OFF conditions.  
ꢀ When in DRY mode, operation is in the cooling zone.  
Lamp colors  
OPERATION lamp  
DRY operationꢀ  
COOL operationꢀ  
Orange  
Green  
TIMER lampꢀ  
QUIET lamp  
Green  
Green  
Green  
ION lampꢀ  
Timer backup  
ꢀ Operation stops if there are no operator controls for 25 hours or  
longer after unit operation switched from OFF to ON by use of  
ON timer operation.  
33  
7-2. Protective Functions  
Freeze prevention  
During COOL or DRY operation, freezing is detected and  
operation is stopped when the temperature of the indoor heat  
exchanger matches the conditions below.  
1.ꢀ Freeze-prevention operation is engaged when the  
temperature of the indoor heat exchanger is below 43°F(6°C).  
2.ꢀ Restart after freeze-prevention operation occurs when the  
temperature of the indoor heat exchanger reaches 46°F(8°C)  
or above.  
C
46  
(8)  
A
B
43  
(6)  
36  
(2)  
*
a
b
c
d
a.ꢀ Area: Automatic capacity control  
b.ꢀ When the temperature drops below Point A, the operation  
frequency is reduced by a certain proportion.  
c.ꢀ Area: Frequency increase is prohibited.  
d.ꢀ When the temperature reaches Point C or above, freezing  
prevention is ended and control is the same as in the  
a
area.  
*ꢀ When the temperature drops to below 36°F(2°C) (continuously  
for 2 minutes or longer), the compressor stops.  
Once the freeze condition is detected, the air conditioner will  
work less than the maximum frequency until it is turned off.  
NOTE  
(CLxx models only)  
The Freeze Prevention Control during the Low Ambient Cooling  
Mode (outside air temperature:59°F(15°C) or lower) is as follows.  
The compressor stops when the temperature of indoor heat  
exchanger becomes less than 36°F(2°C).  
The compressor restarts when the temperature of indoor heat  
exchanger becomes 46°F(8°C) or higher.  
34  
8. TROUBLESHOOTING  
8-1. Precautions before Performing Inspection or Repair  
After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.  
High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge  
(charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be  
careful not to touch any electrified parts before the controller LED (red) turns OFF.  
If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow  
at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.  
8-2. Method of Self-Diagnostics  
Follow the procedure below to perform detailed trouble diagnostics.  
< Clock display >  
Test run mode  
NOTE  
Self-diagnostics mode  
1:If the operation lamp blinks every 0.5 seconds immediately when the  
power is turned ON, there is an external ROM (OTP data) failure on the  
indoor circuit board, or a ROM socket insertion problem, or the ROM  
has not been installed.  
2:The failure mode is stored in memory even when the power is not ON.  
Follow the procedure below to perform diagnostics.  
PROCEDURE  
ON/OFF  
operation  
button  
After turning on power to the air conditioner, use the remote controller and  
follow the steps below to execute self-diagnostics.  
ION  
button  
Step 1: Press and hold the remote controller ION button and 1 HR TIMER  
button. At the same time, press the ACL (reset) button. Use a  
pointed object such as the tip of a pen to press the ACL button.  
1HR.  
When this has been done, "oP-1" (test run) appears, blinking, in  
the remote controller clock display area.  
TIMER  
button  
Step 2: Next, press the 1 HR TIMER button once to change the display  
from "oP-1" to "oP-3" (self-diagnostics). (The display continues to  
blink.)  
Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.  
• ꢀThe self-diagnostics function utilizes the 3 indicator lamps on the main  
unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to  
report the existence of sensor trouble or a protective operation. (The  
lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.)  
Self-diagnostics is completed when the buzzer sounds 3 short beeps.  
• ꢀA maximum of 3 self-diagnostics reports are displayed, for 5 seconds  
each, beginning with the most recent report. Following this display the  
lamps turn OFF. In order to view the self-diagnostics results again,  
press the ON/OFF button again.  
ACL  
• ꢀThe 3 lamps remain OFF if no trouble has occurred.  
(Reset)  
button  
<IMPORTANT> After self-diagnostics is completed, be sure to press the  
ACL (reset) button to return to normal mode. The air  
conditioner will not operate if this is not done.  
35  
(1) Self-diagnostics Lamps  
INDOOR UNIT  
(1) OPERATION lamp  
(2) TIMER lamp  
(3) QUIET lamp  
ION lamp  
OPERATION button  
REMOTE CONTROL receiver  
Since the indications cover various units, the corresponding parts listed below may not be present in some models.  
.... .... ....  
Indication on indoor unit  
OFF  
Blinking  
ON (Illuminated)  
Quiet  
(3)  
Timer  
(2)  
Operation  
(1)  
Code  
S01  
S02  
S03  
Diagnostics item  
Room temperature sensor failure  
Indoor heat exchanger sensor failure  
Humidity sensor failure  
Diagnostics contents  
(1)ꢀSensor open circuit or short circuit  
(2)ꢀContact failure at connector or open circuit at terminal crimping location  
(short-circuit detection only for the humidity sensor)  
(3)ꢀIndoor/outdoor circuit board failure  
Compressor temperature sensor failure  
S04  
S05  
(1)ꢀSensor open circuit or short circuit  
(2)ꢀContact failure at connector or open circuit at terminal crimping location  
(3)ꢀOutdoor circuit board failure  
Outdoor heat exchanger sensor failure  
Outdoor air temperature sensor failure  
S06  
S07  
E01  
Outdoor electrical current detection  
failure  
Outdoor circuit board failure  
(1) Mis-wiring (2) AC power failure (3) Blown fuse (4) Power relay failure  
(5) Indoor or outdoor circuit board failure  
Indoor/outdoor communications failure  
(serial communications)  
(1) HIC or power Tr failure (2) Outdoor fan does not turn. (3) Instantaneous power outage  
(4) Service valve not opened. (5) Outdoor fan blocked. (6) Continuous overload operation  
(7) Compressor failure (8) Outdoor circuit board failure  
• HIC circuit failure  
E02  
• Power Tr (transistor) circuit failure  
Outdoor unit external ROM (OTP data)  
failure  
(1) External ROM data failure (2) Outdoor circuit board failure  
E03  
E04  
E05  
(1) Instantaneous power outage (2) HIC or power transistor failure  
(3) Outdoor circuit board failure  
Peak current cut-off  
PAM circuit failure  
Active circuit failure  
(1) Outdoor circuit board failure (2) Outdoor power supply voltage failure  
Compressor discharge overheat  
prevention activated.  
(1) Electric expansion valve failure (2) Capillaries choked (3) Shortage of refrigerant  
E06  
E07  
(4) Continuous overload operation (5) Outdoor fan does not rotate (6) Outdoor circuit board failure  
Indoor fan operating failure  
(1) Fan motor failure (2) Contact failure at connector (3) Indoor circuit board failure  
4-way valve switching failure  
Indoor zero-cross failure  
(1) 4-way valve failure (heat pump model only)  
(2) Outdoor circuit board failure  
E08  
E09  
E10  
E11  
No-refrigerant protection  
(1) Service valve not opened. (2) Shortage of refrigerant  
DC compressor drive circuit failure  
Outdoor fan operating failure  
(1) Open phase (2) Outdoor circuit board failure  
(1) Fan motor failure (2) Contact failure at connector (3) Outdoor circuit board failure  
Outdoor system communications failure  
Outdoor high-pressure SW  
OLR operation  
(1) Mis-wiring (2) Blown fuse (3) Power relay failure (4) Open phase  
(5) Outdoor circuit board failure (6) Compressor failure  
E12  
E13  
Outdoor power supply open phase  
Outdoor coil freezing  
Freeze-prevention operation activated.  
(1) Indoor fan system failure (2) Shortage of refrigerant (3) Low-temperature operation  
36  
(2) If the self-diagnostics function fails to operate  
Check the indoor unit.  
No indicators illuminate and the  
indoor fan does not rotate.  
Check the power voltage.  
Blown  
Is the fuse blown?  
Normal  
Replace the circuit  
board or the fuse.  
Replace the controller.  
37  
8-3. Checking the Indoor and Outdoor Units  
(1) Checking the indoor unit  
No.  
Control  
Check items (unit operation)  
• The rated voltage must be present between inter-unit wirings 1 and 2.  
1
Use the remote controller to operate the  
unit in "TEST run" mode. To determine  
whether the mode is currently in  
"TEST run" mode, check the 4 indicator  
lamps on the unit. If all 4 are blinking,  
the current mode is "TEST run."  
Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the  
voltage at both ends is measured, approximately 12 to 15V DC must  
be output and the multimeter pointer must bounce once every 8  
seconds.  
Or instead of measuring the voltage, you can insert an LED jig and  
check that the LED flickers once every 8 seconds.  
If there are no problems with the above, then check the outdoor unit.  
For the "Test run" procedure, refer to "4. How to Test Run the Air Conditioner" on Appendix B.  
(2) Checking the outdoor unit  
No.  
Control  
Check items (unit operation)  
1
Apply the rated voltage between outdoor  
unit terminals L1 and L2.  
• The control panel LED (red) must illuminate.  
2
Short-circuit the outdoor unit COM terminal  
to the T-RUN terminal.  
• The compressor and fan motor must all turn on.  
If there are no problems with the above, then check the indoor unit.  
TEST/T-RUN terminals  
Using the TEST/T-RUN terminals  
T-RUN  
: Test run (compressor and fan motor turn ON).  
TEST/MV : Compresses time to 1/60th (accelerates  
operation by 60 times faster than normal).  
(TEST)/MV T-RUN COM  
(3) Checking the serial communications  
....  
....  
....  
Illuminated  
OFF  
Blinking  
Control 1  
Control 2  
Short-circuit terminals 2 and 3 on  
the outdoor unit terminal plate.  
Short-circuit terminals 2 and 3 on  
the indoor unit terminal plate.  
Initial self-diagnostics  
Probable location of malfunction  
Quiet  
Timer  
Operation  
Quiet  
Timer  
Operation  
Quiet  
Timer  
Operation  
( 3 )  
( 2 )  
( 1 )  
( 3 )  
( 2 )  
( 1 )  
( 3 )  
( 2 )  
( 1 )  
Indoor unit circuit board failure  
Outdoor unit circuit board failure  
Failure (open circuit, contact failure, etc.)  
in the inter-unit wirings  
Outdoor unit circuit board failure  
Turn the power OFF before performing short circuiting procedures.  
Refer to the previous pages when performing system self-diagnostics.  
So that the check can be made quickly, indicators blink at first communication after power ON.  
Before performing the above checks, perform “TEST run” operation, and check that the rated voltage is output to terminals L1 and L2  
on the outdoor unit. If it is not output, there is a failure related to the indoor unit power.  
38  
8-4. Trouble Diagnosis of Fan Motor  
8-4-1. Indoor Fan Motor  
This indoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil  
resistance, and the following procedure should be used to check the motor.  
To perform diagnosis, operate the unit in cooling mode with indoor fan speed "High". Next, make sure that the  
indoor unit receive the signals from the remote controller when the ON/OFF operation button is pressed.  
Important:  
(A) Turn OFF the power before connecting or disconnecting the motor connectors.  
(B) When performing voltage measurement at the indoor controller connector for (3) in the table  
below, the DC motor will trip and voltage output will stop approximately 1 minute after operation  
is started. For this reason, to measure the voltage again, turn OFF the unit once using the  
remote controller, and then start the air conditioner again.  
[Trouble symptom 1] The fan does not stop when the unit stops. Indoor unit controller trouble.  
[Trouble symptom 2]ꢀ The fan motor does not rotate when the unit is operating.  
(Diagnostic procedure)  
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor  
unit controller (3 locations).  
Measurement location  
Normal value  
DC 230 V or more  
DC 14 V or more  
(1) Vm-Gnd: Between pin 1 and pin 3  
(2) Vcc-Gnd: Between pin 4 and pin 3  
(3) Vs-Gnd: Between pin 5 and pin 3  
Fluctuation between DC 1.7 to 6.1 V  
(Diagnostic results)  
All of the above measured values are normal. Fan motor trouble (Replace the motor.)  
Any one of the above measured values is not normal. Indoor unit controller trouble (Replace the controller .)  
(Reference)  
DC motor connector pin arrangement  
Pin 1: Vm (red)  
Pin 2: Not used  
Pin 3: Gnd (black)  
Pin 4: Vcc (white)  
Pin 5: Vs (yellow)  
Pin 6: PG (blue)  
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor  
unit operates.  
(There is trouble in the system that provides feedback of motor rotation speed from the  
motor to the indoor unit controller.)  
[Trouble symptom 4] Fan motor rotation speed does not change during indoor unit operation.  
[Trouble symptom 5] Fan motor rotation speed varies excessively during indoor unit operation.  
(Remedy for symptom 3 to 5)  
It is not possible to identify whether the trouble is indoor unit controller trouble or motor trouble.  
Therefore, first replace the indoor unit controller, then (if necessary) replace the DC motor.  
39  
8-5. Noise Malfunction and Electromagnetic Interference  
An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external  
noise, and is likely to cause electromagnetic interference with nearby wireless devices.  
A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these  
effects may still occur. Please pay attention to the points listed below.  
(1) Noise malfunction  
This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.  
Locations most susceptible to noise  
Trouble  
Correction  
(The fundamental concept is to  
1.ꢀLocations near broadcast stations where  
there are strong electromagnetic waves  
Either of the following trouble may occur.  
make the system less susceptible to noise.)  
1.ꢀThe unit may stop suddenly during  
- Insulate for noise or  
distance from the noise source. -  
1.ꢀUse shielded wires.  
2.ꢀLocations near amateur radio (short wave)  
operation.  
stations  
2.ꢀIndicator lamps may flicker.  
3.ꢀLocations near electronic sewing machines  
and arc-welding machines  
2.ꢀMove unit away from the noise source.  
(2) Electromagnetic interference  
This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through  
space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.  
Locations most susceptible to noise  
Trouble  
Correction  
1.ꢀA television or radio is located near the  
A/C and A/C wiring.  
2.ꢀThe antenna cable for a television or  
radio is located close to the A/C and A/C  
wiring.  
1.ꢀNoise appears in the television picture, 1.ꢀSelect a separate power source.  
or the picture is distorted.  
2.ꢀKeep the A/C and A/C wiring at least 1 meter  
2.ꢀStatic occurs in the radio sound.  
away from wireless devices and antenna cables.  
3.ꢀChange the wireless device’s antenna to a high-  
sensitivity antenna.  
3.ꢀLocations where television and radio  
4.ꢀChange the antenna cable to a BS coaxial cable.  
5.ꢀUse a noise filter (for the wireless device).  
6.ꢀUse a signal booster.  
signals are weak.  
40  
APPENDIX A INSTRUCTION MANUAL  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
(OI-852-6-4180-806-00-1)  
(OI-852-6-4180-807-00-1)  
A-1  
Features  
This air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these functions  
are provided below; refer to these descriptions when using the air conditioner.  
Microprocessor Controlled Operation  
Automatic Restart Function for Power Failure  
Even when power failure occurs, preset  
programmed operation can be reactivated once  
power resumes.  
The interior compartment of the remote control unit  
contains several features to facilitate automatic  
operation, easy logically displayed for easy use.  
Simple One-touch Wireless Remote Control  
The remote control unit has several features to  
facilitate automatic operation.  
High Power Operation  
The unit operates at maximum output for 30  
minutes, regardless of the desired temperature.  
The fan speed is 1 step above “High”.  
24-Hour ON or OFF Timer  
This timer can be set to automatically turn the unit  
on or off at any time within a 24 hour period.  
Quiet Operation  
The fan rotates slower than the fan speed setting to  
provide a quieter operating sound.  
1-Hour OFF Timer  
This timer can be set to automatically turn off the  
unit at any time after one hour.  
ION Operation  
While it is operating, the unit generates negative  
ions that freshen up the air in the room.  
Night Setback  
Pressing this button changes the setting of the  
room temperature thermostat, allowing you to set  
the temperature at whatever level that you find  
comfortable.  
Anti-Mold Filter  
This unit is equipped with an anti-mold filter that  
inhibits the growth of mold and bacteria.  
Automatic and 3-step Fan Speed  
Air Clean Filter  
Auto/High/Medium/Low  
An air filter that eliminates unpleasant odors and  
cleans the air is available.  
Purchase a replacement filter at your local dealer.  
(model STK-FDXB)  
Air Sweep Control  
This function moves a flap up and down in the air  
outlet, directing air in a sweeping motion around the  
room and providing comfort in every corner.  
Auto. Flap Control  
This automatically sets the flap to the optimum  
position during cooling and drying operation.  
OI-807-2-EG  
2
Contents  
Page  
Features............................................................................................................ 2  
Product Information........................................................................................... 3  
Alert Symbols.................................................................................................... 3  
Installation Location .......................................................................................... 4  
Electrical Requirements.................................................................................... 4  
Safety Instructions............................................................................................. 4  
Names of Parts ................................................................................................. 5  
Using the Remote Control Unit ....................................................................... 10  
Operation with the Remote Control Unit ........................................................ 12  
1. Operation ............................................................................................... 12  
2. Adjusting the Fan Speed........................................................................ 13  
3. Fan Only................................................................................................. 13  
4. Night Setback Mode............................................................................... 14  
5. QUIET Mode.......................................................................................... 15  
6. HIGH POWER Mode ............................................................................. 15  
7. ION Mode............................................................................................... 15  
Special Remarks............................................................................................. 16  
Setting the Timer............................................................................................. 17  
Using the 1-Hour OFF Timer .......................................................................... 19  
Tips for Energy Saving.................................................................................... 19  
Adjusting the Airflow Direction ........................................................................ 20  
Operation without the Remote Control Unit .................................................... 21  
Care and Cleaning.......................................................................................... 21  
Troubleshooting............................................................................................... 24  
Operating Range............................................................................................. 24  
Product Information  
If you have problems or questions concerning your Air Conditioner, you will need  
the following information. Model and serial numbers are on the nameplate on the  
bottom of the cabinet.  
Model No. ______________________ Serial No. ____________________  
Date of purchase ________________________________________________  
Dealer’s address ________________________________________________  
Phone number ________________  
Alert Symbols  
The following symbols used in this manual, alert you to potentially  
dangerous conditions to users, service personnel or the appliance:  
This symbol refers to a hazard or unsafe  
practice which can result in severe  
personal injury or death.  
This symbol refers to a hazard or unsafe  
CAUTION  
practice which can result in personal injury  
or product or property damage.  
OI-807-3-EG  
3
Installation Location  
We recommend that this air conditioner be installed properly by qualified  
installation technicians in accordance with the Installation Instructions  
provided with the unit.  
Before installation, check that the voltage of the electric supply in your home or  
office is the same as the voltage shown on the nameplate.  
Do not install this air conditioner where there are fumes or flammable  
gases, or in an extremely humid space such as a greenhouse.  
Do not install the air conditioner where excessively high heat-generating  
objects are placed.  
Avoid: To protect the air conditioner from heavy corrosion, avoid installing the outdoor  
unit where salty sea water can splash directly onto it or in sulphurous air near a  
spa.  
Electrical Requirements  
1. All wiring must conform to the local electrical codes. Consult your dealer or a  
qualified electrician for details.  
2. Each unit must be properly grounded with a ground (or earth) wire or through  
the supply wiring.  
3. Wiring must be done by a qualified electrician.  
Safety Instructions  
Read this Instruction Manual carefully before using this air conditioner. If  
you still have any difficulties or problems, consult your dealer for help.  
This air conditioner is designed to give you comfortable room conditions.  
Use this only for its intended purpose as described in this Instruction  
Manual.  
Never use or store gasoline or other flammable vapor or liquid near the  
air conditioner — it is very dangerous.  
This air conditioner has no ventilator for intaking fresh air from  
outdoors. You must open doors or windows frequently when you use  
gas or oil heating appliances in the same room, which consume a lot of  
oxygen from the air. Otherwise there is a risk of suffocation in an  
extreme case.  
Do not turn the air conditioner on and off from the power mains switch.  
Use the ON/OFF operation button.  
Do not stick anything into the air outlet of the outdoor unit. This is  
dangerous because the fan is rotating at high speed.  
Do not let children play with the air conditioner.  
CAUTION  
Do not cool the room too much if babies or invalids are present.  
OI-807-4-EG  
4
Names of Parts  
Air intakes  
INDOOR UNIT  
Air outlet  
Remote control unit  
Drain hose  
Refrigerant tubes  
OUTDOOR UNIT  
Air outlet  
This illustration is based on the external view of a standard model.  
Consequently, the shape may differ from that of the air conditioner which you  
have selected.  
NOTE  
This air conditioner consists of an indoor unit and an outdoor unit. You can control  
the air conditioner with the remote control unit.  
Air Intake Air from the room is drawn into this section and passes through air filters which  
remove dust.  
Air Outlet Conditioned air is blown out of the air conditioner through the air outlet.  
Remote Control Unit The wireless remote control unit controls power ON/OFF, operation mode  
selection, temperature, fan speed, timer setting, and air sweeping.  
Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which  
refrigerant gas flows.  
Drain Hose Moisture in the room condenses and drains off through this hose.  
Outdoor (Condensing) Unit The outdoor unit contains the compressor, fan motor, heat exchanger coil, and  
other electrical components.  
OI-807-5-EG  
5
Unit Display and Operation Button  
INDOOR UNIT  
IMPORTANT  
OPERATION lamp  
TIMER lamp  
QUIET lamp  
ION lamp  
Avoid using radio equipment  
such as mobile phone near  
(within 4 ft.) the remote  
control receiver. Some radio  
equipment may cause  
QUIET  
OPERATION button  
malfunction of the unit.  
If the trouble happens,  
disconnect power and restart  
the air conditioner after a few  
minutes.  
REMOTE CONTROL receiver  
REMOTE CONTROL receiver This section picks up infrared signals from the remote control unit (transmitter).  
OPERATION button When the remote control cannot be used, pressing this button enables cooling  
operation.  
Each time this button is pressed, the operation mode changes cyclically.  
Cooling operation  
Stop  
OPERATION lamp This lamp lights when the system is in the continuous DRY (orange), COOL  
(green) and FAN (green) mode.  
TIMER lamp This lamp lights when the system is being controlled by the timer.  
QUIET lamp This lamp lights during operation in the QUIET mode.  
ION lamp This lamp lights during operation in the ION mode while the indoor unit is  
operating.  
The unit’s display lamps are dimmed during operation in the NIGHT SETBACK  
mode.  
NOTE  
OI-807-6-EG  
6
Remote Control Unit (Display)  
Displayed when transmitting data  
Displayed when indoor unit sensor  
is in use  
Displayed when setting  
temperature  
Displayed when temperature is  
shown  
Displayed when setting timer  
Displayed when the  
time display is set to  
12-hour time.  
Symbols  
(1) Operation mode  
(4) Timer  
24-hour clock with ON/OFF  
MILD DRY ..............................  
COOL.....................................  
FAN ........................................  
program Timer........................  
ON Timer................................  
OFF Timer..............................  
1-hour OFF Timer...................  
(2) Fan speed  
Automatic operation ...............  
(5) NIGHT SETBACK ..................  
HIGH .....................................  
MEDIUM.................................  
LOW.......................................  
(6) Confirmation of  
transmission...........................  
(7) Auto. fla.dication.....................  
Flap angle indication ..............  
Sweep indication....................  
(8) High power operation.............  
(9) Quiet operation.......................  
(10) ION operation.......................  
(3) Temperature setting  
60 – 86 °F  
When set to 80 °F  
temperature indication............  
OI-807-7-EG  
7
Remote Control Unit  
Sensor  
Transmitter  
(Cover closed)  
Display  
ON/OFF operation button  
1 HR. TIMER button  
ION button  
Temperature setting buttons (TEMP.)  
MODE selector button  
NIGHT SETBACK button  
HIGH POWER button  
QUIET button  
FAN SPEED selector button  
FLAP button  
ON TIME  
setting  
buttons  
Advance button  
Return button  
OFF TIME  
setting  
buttons  
Advance button  
Return button  
CLOCK button  
CANCEL button  
SENSOR button  
Time display selector button  
ACL button  
ADDRESS switch  
Temperature display  
selector button  
The illustration above pictures the remote control unit after the cover has been  
opened.  
NOTE  
Transmitter When you press the buttons on the remote control unit, the  
mark appears in  
the display to transmit the setting changes to the receiver in the air conditioner.  
Sensor A temperature sensor inside the remote control unit senses the room  
temperature.  
Display Information on the operating conditions is displayed while the remote control unit  
is switched on. If the unit is turned off, FLAP setting and FAN SPEED setting are  
not displayed.  
ION button  
: This button is for turning the negative ions generated during operation on  
and off.  
ON/OFF operation button This button is for turning the air conditioner on and off.  
1 HR. TIMER button  
(1-HOUR OFF TIMER)  
: When you press this button, regardless of whether the unit is operating or  
stopping, the unit operates for one hour and then shuts down.  
OI-807-8-EG  
8
Remote Control Unit (continued)  
Temperature setting buttons Press the  
(TEMP.) Press the  
button to increase the set temperature.  
button to reduce the set temperature.  
The temperature setting changes by 1 °C or 2 °F each time one of the TEMP.  
buttons is pressed.  
QUIET button  
: When you press this button, the fan rotates slower than the fan speed  
setting to provide a quieter operating sound.  
MODE selector button Use this button to select DRY, COOL or FAN mode.  
(DRY)  
(COOL)  
(FAN)  
: The air conditioner reduces the humidity in the room.  
: The air conditioner makes the room cooler.  
: The air conditioner works only as a circulation fan.  
FAN SPEED selector button  
: The air conditioner automatically decides the fan speeds.  
: High fan speed  
: Medium fan speed  
: Low fan speed  
NIGHT SETBACK button For details, see “4. Night Setback Mode”. When you press this button in the DRY  
or COOL mode, the mark appears in the display, and the remote control unit  
will automatically adjust the set temperature to save energy.  
FLAP button Press this button either to select the setting of the airflow direction to the auto.  
flap in each mode or one of the six possible positions manually or to select the  
sweep function which moves the flap up and down automatically.  
: Auto flap setting: If selected in a cooling or dry operation, the flap is set at  
position (7) in the following chart.  
: The airflow direction can be set manually. (six positions)  
: The flap moves up and down automatically.  
When you press the FLAP button, the air flow direction will be changed one by  
one as follows.  
NOTE  
SWEEP  
HIGH POWER button  
: If this button is pressed during DRY, COOL or FAN operation, the unit  
operates at maximum output for 30 minutes, regardless of the desired  
temperature.  
The fan speed is 1 step above “High”.  
ON TIME/OFF TIME setting No display: The timer does not operate.  
buttons  
: The air conditioner starts at the set time.  
: The air conditioner stops at the set time.  
: The air conditioner stops and starts, or starts and stops, at the  
set times every day. For details, see “Setting the Timer”.  
OI-807-9-EG  
9
Remote Control Unit (continued)  
SENSOR button When you press this button (use a small-tipped object such as a ballpoint pen),  
the  
mark will appear at the display. And the room temperature is detected by  
the sensor which is built into the indoor unit and the air conditioner is controlled  
accordingly.  
If the remote control is located near a heat source, such as a space heater or in direct  
sunlight, press the SENSOR button to switch to the sensor on the indoor unit.  
NOTE  
Temperature Display Selector button This switches the temperature display between °C and °F.  
Time Display Selector button This switches the time display between 24-hour time and 12-hour time.  
ACL button (ALL CLEAR) Puts the remote control unit into pre-operation status. Always press this button  
after replacing the batteries.  
ADDRESS switch  
The address switch changes to prevent mixing of signals from remote control  
units when two air conditioners are installed next to each other. Normally, the  
address switch is set to A. For more information, please contact the dealer  
where you made the purchase.  
Normally, the tabs on the remote control unit should not be bent.  
The remote control unit sends the temperature signal to the air conditioner regularly at five minute  
intervals. If the signal from the remote control unit stops for more than 15 minutes due to the loss of the  
remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built  
into the indoor unit and control the room temperature. In these cases, the temperature around the remote  
control unit may differ from the temperature detected at the air conditioner’s position.  
NOTE  
Using the Remote Control Unit  
How to Install Batteries  
1. Slide the cover in the direction  
indicated by the arrow and remove it.  
2. Install two AAA alkaline batteries.  
Make sure the batteries point in the  
direction marked in the battery  
compartment.  
3. Use a thin object such as the tip of a  
pen to press the ACL button.  
ACL button  
The batteries last about six months, depending on how much you use  
the remote control unit. Replace the batteries when the remote control  
unit’s display fails to light, or when the remote control cannot be used to  
change the air conditioner’s settings.  
NOTE  
Use two fresh leak-proof type-AAA alkaline batteries.  
In replacing batteries, follow the instructions as mentioned in the sub-  
section “How to Install Batteries”.  
If you do not use the remote control unit more than 1 month, take out the  
batteries.  
OI-807-10-EG  
10  
Using the Remote Control Unit (continued)  
How to Use the Remote When using the remote control unit, always point the unit’s transmitter head  
Control Unit directly at the air conditioner’s receiver.  
Air conditioner  
(Indoor unit)  
Receiver  
Remote control  
unit  
(Transmitter head)  
Remote Control Unit The remote control unit may be operated either from a non-fixed position or from  
Installation Position a wall-mounted position. To ensure that the air conditioner operates correctly, DO  
NOT install the remote control unit in the following places:  
DO NOT  
In direct sunlight  
Behind a curtain or other places where it is covered  
More than 26 feet (8 m) away from the air conditioner  
In the path of the air conditioner’s airstream  
Where it may become extremely hot or cold  
Where it may be subject to electrical or magnetic noise  
Where there is an obstacle between the remote control unit and air conditioner  
(since a check signal is sent from the remote control unit every 5 minutes)  
Mounting the Remote Control Before mounting the remote control unit, press the ON/OFF operation button at  
Unit the mounting location to make sure that the air conditioner operates from that  
location. The indoor unit should make a beeping sound to indicate that it has  
received the signal.  
Rear side  
Remote control  
unit mount  
Press  
Mounting screws  
5/32 x 5/8" (4 x 16 mm)  
(included)  
Hole  
Set in  
place  
To prevent loss of the remote control unit,  
you can connect the remote control unit to  
the mount by passing a string through the  
remote control unit and attachment hole.  
To take out the remote control unit, pull it forward.  
When Holding the Remote  
Control Unit  
When using the remote control unit and during air conditioner operation, the  
transmitter on the remote control unit should be pointed toward the receiver on  
the indoor unit.  
Make sure that there are no objects between the remote control unit and  
receiver which could block the signal.  
OI-807-11-EG  
11  
Operation with the Remote Control  
Unit  
1. Operation  
STEP 2  
STEP 3  
STEP 1  
STEP 4  
STEP 5  
Check that the circuit breaker on the power panel is turned on.  
Press the setting buttons as described below and change the settings as desired.  
NOTE  
STEP 1  
Press the MODE selector button and select the desired mode.  
For dehumidifying operation  
For cooling operation  
For fan only operation  
STEP 2  
STEP 3  
To start the air conditioner, press the ON/OFF operation button.  
Press the TEMP. setting buttons to change the temperature  
setting to the desired temperature.  
Adjustable temperature range:  
30 °C max.  
16 °C min.  
or  
86 °F max.  
60 °F min.  
STEP 4  
STEP 5  
Set the FAN SPEED selector button to the setting you want.  
Press the FLAP button and set the airflow direction as desired.  
(Refer to “Adjusting the Airflow Direction” on page 20.)  
To stop the air conditioner, press the ON/OFF operation button again.  
OI-807-12-EG  
12  
Operation with the Remote Control Unit (continued)  
Choose the best position in the room for the remote control unit, which also  
acts as the sensor for room comfort and transmits the operating instructions.  
Once you’ve found this best position, always keep the remote control unit  
there.  
NOTE  
This appliance has a built-in 5-minute time delay circuit to ensure reliable  
operation. When the operation button is pressed, the compressor will start  
running within three minutes. In the event of power failure, the unit will stop.  
2. Adjusting the Fan Speed  
A. Automatic fan speed  
Simply set the FAN SPEED selector button to the  
position.  
This automatically sets the best fan speed for the room temperature.  
B. Manual fan speed  
3. Fan Only  
If you want to adjust fan speed manually during operation, just set the FAN  
SPEED selector button as desired. [  
,
, or  
]
STEP 2  
STEP 1  
STEP 3  
If you want to circulate air without any temperature control, follow these steps:  
STEP 1  
STEP 2  
STEP 3  
Press the MODE selector button to switch to the fan mode  
Press the ON/OFF operation button.  
.
Press the FAN SPEED selector button to select the fan speed of  
your choice ( or ).  
,
OI-807-13-EG  
13  
Operation with the Remote Control Unit (continued)  
4. Night Setback Mode  
Night Setback Mode is used for saving energy.  
Press the NIGHT SETBACK button while operation.  
The  
mark appears in the display.  
To release the night setback function, press the NIGHT SETBACK button again.  
In Cooling and DRY  
Mode: ( and  
When the night setback mode is selected, the air conditioner automatically  
raises the temperature setting 2 °F when 30 minutes have passed after the  
selection was made, and then another 2 °F after another 30 minutes have  
passed, regardless of the indoor temperature when night setback was  
selected. This enables you to save energy without sacrificing comfort. This  
function is convenient when gentle cooling is needed.  
)
2 °F  
Setting  
temperature  
2 °F  
30 min.  
30 min.  
Press the NIGHT  
SETBACK button  
Time  
OI-807-14-EG  
14  
Operation with the Remote Control Unit (continued)  
5. QUIET Mode  
QUIET Mode is used to reduce the fan sound of the indoor unit.  
Press the QUIET button.  
The  
mark appears in the display.  
To cancel, press QUIET button again.  
In QUIET Mode, the fan rotates at a slower speed than the fan speed setting.  
If the unit is already operating with a very low airflow, the fan sound may not  
change even if the QUIET button is pressed.  
6. HIGH POWER Mode  
HIGH POWER mode can be used to increase the output of the indoor unit for all  
operation modes.  
Press the HIGH POWER button.  
The  
mark appears in the display.  
To cancel, press HIGH POWER button again.  
When the HIGH POWER button is pressed, the unit operates at maximum  
output for 30 minutes, regardless of the desired temperature. The fan speed is  
1 step above “High”.  
QUIET Mode and HIGH POWER Mode cannot be used at the same time.  
• Depending on the operating conditions, the fan speed may be  
increased by a small amount only.  
NOTE  
7. ION Mode  
The ION mode is used during operation to generate negative ions that freshen up  
the air in the room.  
Press the ION button.  
The  
mark appears in the display.  
To cancel, press ION button again.  
The indoor unit’s ION lamp lights up while negative ions are being generated.  
ION “on” is the remote control unit’s initial setting.  
The negative ions are generated from the negative ion generator.  
OI-807-15-EG  
15  
Special Remarks  
‘‘DRY’’ ( ) Operation  
How it works?  
Once the room temperature reaches the level that was set, the unit’s operation  
frequency is changed automatically.  
During DRY operation, the fan speed automatically runs at lower speed for  
providing a comfortable breeze.  
‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less.  
Cooling ( ) Operation  
Sometimes the indoor unit may not get to the set fan speed such as LOW and  
QUIET under cool operation at very low outdoor temperatures due to the  
indoor unit being protected from ice or frost when combined with the outdoor  
unit for Low Ambient Cooling models.  
In the event of power failure, the unit will stop. When the power is resumed,  
the unit will restart automatically within 15 minutes by the remote control unit.  
Power failure during  
operation  
Clicking Sound  
Clicking sound is heard from  
the air conditioner  
In cooling operation, any plastic parts may shrink due to a sudden  
temperature change. In this event, a clicking sound may occur. This is normal,  
and the sound will soon disappear.  
The remote control unit sends the setting condition to the air conditioner  
regularly at five minute intervals.  
Remote Control Unit  
OI-807-16-EG  
16  
Setting the Timer  
In the descriptions below, the following settings are used for the temperature and  
time indicator selector button on the bottom front section of the remote control.  
NOTE  
Temperature: °F  
Time: AM, PM  
(Example) To set to 10:30 pm.  
1. How to set the present  
time  
Operation  
Indication  
1. Press the CLOCK button once if  
The time indication alone flashes.  
the time indicator is not flashing.  
2. Press the Advance, Return ( ,  
) button until PM 10:30 is  
displayed.  
The time can be set in 1-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Press the CLOCK button again.  
This completes the setting of the  
current time.  
(Example) To stop the air conditioner at 11:00 am.  
2. How to set the OFF time  
1. Press the OFF TIME setting  
The timer  
indication is displayed,  
button once.  
and the present OFF time is shown.  
2. Press the Advance, Return ( ,  
) button until AM 11:00 is  
displayed.  
The timer indication blinks.  
The time can be set in 10-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Wait a few seconds, and then the The timer  
indication stops  
setting is complete.  
blinking and the present time is  
displayed.  
OI-807-17-EG  
17  
Setting the Timer (continued)  
(Example) To start operation at 7:10 am.  
3. How to set the ON time  
Operation  
Indication  
1. Press the ON TIME setting  
The timer  
indication is displayed,  
button once.  
and the present ON time is shown.  
2. Press the Advance, Return ( ,  
) button until AM 7:10 is  
displayed.  
The timer  
indication blinks.  
The time can be set in 10-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Wait a few seconds, and then  
The timer  
indication stops  
the setting is complete.  
blinking and the present time is  
displayed.  
(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am.  
4. How to set DAILY ON/OFF  
REPEAT timer  
10:30 pm.  
Present time  
7:10 am.  
ON  
11:00 am.  
OFF  
1. Set the timer ON/OFF times as  
The present time 10:30 pm. and  
are displayed.  
shown in 2-1, 2, 3 and 3-1, 2, 3.  
The ON/OFF combination timer uses the current time as the  
reference, and it is activated starting from whichever set time  
comes first.  
NOTE  
With the ON/OFF combination timer, the settings are repeated  
every day.  
You can check the timer ON/OFF times after you have set them  
by pressing the ON TIME and OFF TIME setting buttons.  
To cancel a timer program  
Press the CANCEL button.  
When either an ON or OFF timer is to be canceled, press the button  
corresponding to the timer whose program is to be canceled, and then press  
the CANCEL button.  
The airflow direction, fan speed and temperature setting can be changed after  
a timer program has been set even when the unit is stopped. Even when  
operation is stopped during an ON timer program, the unit will start operating  
when the set time is reached provided that the program is not canceled.  
When the ON timer and OFF timer are set to the same time, the timer  
operates as if it is turned off.  
NOTE  
OI-807-18-EG  
18  
Using the 1-Hour OFF Timer  
1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop,  
regardless of whether the unit is on or off when this button is pressed.  
The  
indicator in the display indicates that this function is operating.  
Setting procedure:  
Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER  
button.  
appears in the display.  
Cancellation procedure:  
Press the ON/OFF operation button to turn the unit off, wait for the unit to stop  
operating, and then press the ON/OFF operation button again.  
The 1-Hour Timer function is now cancelled and the unit operates normally.  
If, while the 1-Hour Timer function is operating, the 1HR. TIMER button is  
pressed once to cancel the function and then again, the unit continues to  
operate for one hour from that point in time and then stops.  
It is not possible to use the OFF Timer and 1-Hour OFF Timer together.  
Whichever function is set last takes precedence. If the 1 HR. TIMER button is  
pressed while the TIMER OFF function operates, the OFF Timer is cancelled  
and the unit will stop operating one hour later.  
NOTE  
2. Operation together with the The 1-Hour OFF Timer setting is given priority over the DAILY ON/OFF REPEAT  
DAILY ON/OFF REPEAT Timer setting.  
Tips for Energy Saving  
Do not  
Block the air intake and outlet of the unit. If they are obstructed, the unit  
will not work well, and may be damaged.  
Let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls  
and ceiling of the room are warmed by the sun, it will take longer to cool the  
room.  
Do  
Always try to keep the air filter clean. (Refer to “Care and Cleaning”.) A  
clogged filter will impair the performance of the unit.  
To prevent conditioned air from escaping, keep windows, doors and any other  
openings closed.  
OI-807-19-EG  
19  
Adjusting the Airflow Direction  
1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your  
hands to the left or right.  
When the humidity is high, the vertical vanes should be in the front  
CAUTION  
position during the cooling or dehumidifying operation. If the vertical  
vanes are positioned all of the way to the right or left, condensation may  
begin to form around the air vent and drip down.  
2. Vertical The vertical airflow can be adjusted by moving the flap with the remote control  
unit. Do not move the flap with your hands. Confirm that the remote control unit  
has been turned on. Use the FLAP button to set either the sweep function or one  
of the six airflow direction settings.  
SWEEP  
COOL  
DRY  
FAN  
A. Sweep function  
B. Setting the airflow manually  
Referring to the above illustration, use the  
The flap starts moving up and down to  
deliver air over the sweep range.  
FLAP button to set the airflow direction  
within the range used during the cooling or  
dehumidifying operation.  
C. Auto flap function  
The flap is set to the recommended  
position.  
The flap automatically closes when the unit is off.  
NOTE  
Use the FLAP button on the remote control to adjust the position of the  
flap. If you move the flap by hand, the flap position according to the  
remote control and the actual flap position may no longer match. If this  
should happen, shut off the unit, wait for the flap to close, and then turn  
on the unit again; the flap position will now be normal again.  
CAUTION  
Do not have the flap pointed down during cooling operation.  
Condensation may begin to form around the air vent and drip down.  
OI-807-20-EG  
20  
Operation without the Remote  
Control Unit  
INDOOR UNIT  
If you have lost the remote control unit or it has trouble, follow the steps  
below.  
When the air conditioner is not running  
Each time the OPERATION button is pressed, the operation mode changes  
cyclically.  
Cooling operation  
Stop  
OPERATION button  
The temperature is set to the room temperature minus 4 °F during the cooling  
operation, and the fan speed and flap are set to Auto.  
NOTE  
Care and Cleaning  
1. For safety, be sure to turn the air conditioner off and also to disconnect  
the power before cleaning.  
2. Do not pour water on the indoor unit to clean it. This will damage the  
internal components and cause an electric shock hazard.  
Casing and Grille (Indoor Unit) Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or  
wipe them with a clean, soft cloth.  
If these parts are stained, use a clean cloth moistened with a mild liquid  
detergent. When cleaning the grille, be careful not to force the vanes out of place.  
1. Never use solvents, or harsh chemicals when cleaning the indoor unit.  
CAUTION  
Do not wipe the plastic casing using very hot water.  
2. Some metal edges and the fins are sharp and may cause injury if  
handled improperly; be especially careful when you clean these parts.  
3. The internal coil and other components of the outdoor unit must be  
cleaned every year. Consult your dealer or service center.  
OI-807-21-EG  
21  
Care and Cleaning (continued)  
Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at  
least once every two weeks.  
How to remove the anti-mold 1. Grasp both ends of the air  
Air intake grille  
filter  
intake grille, and remove it by  
opening towards the front and  
pulling towards you.  
2. Remove the anti-mold filter  
attached to the rear of the air  
intake grille.  
Anti-mold filter  
Cleaning Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter,  
wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.  
How to replace the anti-mold 1. With the FRONT mark of the  
Anti-mold filter  
filter  
anti-mold filter at the front,  
align the two indentions near  
the mark with the hooks at the  
rear of the air intake grille, and  
then mount the anti-mold filter.  
FRONT mark  
Hook  
2. Allow the edge of the air intake  
grille to slide into the top of the  
indoor unit, and then insert it  
all the way inside.  
Groove  
Pin  
Air intake grille  
3. To attach the air intake grille to  
the indoor unit, press its  
bottom right and left corners as  
well as its bottom center into  
place.  
Air intake grille  
Attach so that the round pins at the top right and left corners of the air intake grille  
are inserted into the grooves at the top right and left of the indoor unit.  
NOTE  
OI-807-22-EG  
22  
Care and Cleaning (continued)  
Air Clean Filter The air clean filter removes dust and dirt from the air, and reduces odors and  
smoke from tobacco.  
This air clean filter cannot remove harmful gases or vapors nor ventilate air in  
the room. You must open doors or windows frequently when you use gas or oil  
heating appliances. Otherwise there is a risk of suffocation in extreme cases.  
How to install the air clean The air clean filter needs to be installed behind the air intake grille.  
filter 1. Remove the air intake grille.  
2. Install the air clean filter in the  
position shown in the figure.  
3. Remount the air intake grille.  
Air clean  
filter  
How to clean the air clean filter  
In general, the filter should be sucked to remove dust in low fan speed of a  
vacuum cleaner once every three months.  
If there is heavily grime on the filter, soak the filter in lukewarm water with  
neutral detergent diluted 1:500 for 1 to 2 minutes then wash it.  
Rinse the filter in clean water, then let it dry on the towel in room temperature.  
Do not bend nor give excessive force onto the air clean filter.  
If the filter surface is heavily blocked with dirt or damaged, replace it with new  
one. Purchase a replacement filter at your local dealer. (model STK-FDXB)  
NOTE  
Cleaning the main unit and  
remote control unit  
Wipe clean using a soft, dry cloth.  
To remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °F,  
wring thoroughly, and then wipe.  
The air intake grille can be removed in order to wash it with water.  
Removing and remounting the Refer to “How to remove the anti-mold filter” and “How to replace the anti-mold  
air intake grille filter” on page 22.  
When using a footstool or the like, be careful not to let it tip over.  
CAUTION  
Washing the grille with water  
Clean the grille gently using a soft sponge, or the like. Then wipe away any  
remaining moisture.  
Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly  
with water and wipe away any remaining moisture.  
Cleaning the negative ion Follow the steps below when the  
generator generator has become dirty.  
For safety, be sure to turn the air  
conditioner off and also to disconnect  
the power before cleaning.  
Remove the dust on the negative ion  
generator.  
Use a toothbrush, etc. to dust off the end.  
Use a cotton swab, etc., to clean around  
the generator inside the plastic case,  
taking care not to touch the electrodes.  
Negative ion generator  
(metal electrodes inside plastic case)  
During use, the negative ion generator and other metal parts may become  
discolored: this is normal and not indicative of malfunctioning.  
If the dirt on and around the negative ion generator is left to build up, a puffing or  
sputtering sound will eventually be heard. In this case, clean the generator  
immediately.  
NOTE  
Do not apply excessive force while performing maintenance.  
OI-807-23-EG  
23  
Troubleshooting  
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not  
work properly, contact your dealer or service center.  
Trouble  
Possible Cause  
Remedy  
1. Restore power.  
Air conditioner does not run at all.  
1. Power failure.  
2. Leakage circuit breaker tripped.  
3. Line voltage is too low.  
2. Contact service center.  
3. Consult your electrician or dealer.  
4. Replace batteries.  
4. Batteries in remote control unit have  
run down.  
OPERATION lamp blinks and air  
conditioner does not operate.  
Trouble in system.  
Contact service center.  
Compressor runs but soon stops.  
Poor cooling performance.  
Obstruction in front of condenser coil.  
1. Dirty or clogged air filter.  
Remove obstruction.  
1. Clean air filter to improve airflow.  
2. Eliminate heat source if possible.  
3. Shut them to keep the heat out.  
4. Remove it to ensure good airflow.  
2. Heat source or many people in room.  
3. Doors and/or windows are open.  
4. Obstacle near air intake or air  
discharge port.  
5. Thermostat is set too high for cooling. 5. Set the temperature lower.  
Clicking sound is heard from the air  
conditioner.  
In cooling operation, any plastic parts  
may shrink due to a sudden  
This is normal, and the sound will soon  
disappear.  
temperature change. In this event, a  
clicking sound may occur.  
OPERATION lamp lights but outdoor  
unit will not run.  
1. The use of cellular phones near the  
air conditioner may cause  
1. Turn off the power then restart the  
air conditioner after a while.  
disturbance to its normal operation.  
2. Consult your dealer.  
Operating Range  
The air conditioner is operable within the temperature ranges as listed below:  
For Cooling Only Models : CM1972, CM2472, CM3172  
Temperature  
Indoor air temperature  
Outdoor air temperature  
COOLING  
Max.  
Min.  
95°F DB / 71 °F WB  
67°F DB / 57 °F WB  
115 °F DB  
67 °F DB  
For Low Ambient Cooling Models : CLM1972, CLM2472, CLM3172  
Temperature  
Indoor air temperature  
Outdoor air temperature  
COOLING  
Max.  
Min.  
95 °F DB / 71 °F WB  
67 °F DB / 57 °F WB  
115 °F DB  
*1  
*1 32 °F D.B.: When combined with KMS1872 or KMS2472  
23 °F D.B.: When combined with KMS0772, KMS0972 or KMS1272  
OI-02-807-24-EG  
24  
APPENDIX B INSTALLATION INSTRUCTIONS  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
(II-852-6-4189-996-00-0)  
A-2  
For Indoor Unit  
INSTALLATION INSTRUCTIONS  
COOL/DRY Model  
– Inverter Split System Air Conditioner –  
This air conditioner uses the new refrigerant R410A.  
Contents  
Model Combinations  
Page  
Combine indoor and outdoor units only as listed  
below.  
IMPORTANT!  
Please Read Before Starting .................................. 2  
Indoor Unit  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
Outdoor Unit  
CM1972  
1. GENERAL .......................................................... 3  
1-1. Tools Required for Installation (not supplied)  
1-2. Accessories Supplied with Unit  
CM2472  
1-3. Optional Copper Tubing Kit  
1-4. Type of Copper Tube and Insulation Material  
1-5. Additional Materials Required for Installation  
CM3172  
CLM1972  
CLM2472  
CLM3172  
2. INSTALLATION SITE SELECTION ................... 4  
2-1. Indoor Unit  
Power Source:  
2-2. Embedding the Tubing and Wiring  
60 Hz, single-phase, 230 / 208 VAC  
3. HOW TO INSTALL THE INDOOR UNIT ............. 6  
3-1. Remove the Rear Panel from the Unit  
3-2. Make a Hole  
Combinations of indoor and outdoor units  
Connect indoor and outdoor units only in the combi-  
nations listed in the catalog or installation manual.  
3-3. Install the Rear Panel on the Wall  
3-4. Remove the Grille to Install the Indoor Unit  
3-5. Shape the Indoor Side Tubing  
3-6. Wiring Instructions  
CAUTION  
3-7. Wiring Instructions for Inter-unit Connections  
3-8. Mounting  
3-9. Drain Hose  
Connecting any other model may result in  
operation failure and system damage.  
4. HOW TO TEST RUN THE AIR CONDITIONER ... 16  
Be sure to read the yellow instruction sheet  
attached to the outdoor unit for models using the  
new refrigerant R410A.  
5. REMOTE CONTROL UNIT INSTALLATION  
POSITION ......................................................... 17  
5-1. Mounting on a Wall  
6. ADDRESS SWITCH.......................................... 18  
6-1. Address Setting of the Remote  
Control Unit  
7. CONNECTING A HOME AUTOMATION  
DEVICE.............................................................. 19  
NOTE  
The illustrations are based on the typical appearance of  
a standard model. Consequently, the shape may differ  
from that of the air conditioner that you are installing.  
8. INSTALLATION CHECK SHEET ...................... 19  
In Canada  
SANYO FISHER COMPANY  
SANYO Canada Inc.  
A DIVISION OF SANYO NORTH AMERICA CORPORATION  
300 Applewood Crescent, Concord  
21605 Plummer Street  
Ontario, L4K 5C7, Canada  
Chatsworth, CA 91311 U.S.A.  
85264189996000 © SANYO 2006  
IMPORTANT!  
Please Read Before Starting  
This air conditioning system meets strict safety and operating  
standards. As the installer or service person, it is an important  
part of your job to install or service the system so it operates  
safely and efficiently.  
When Installing…  
…In a Ceiling or Wall  
Make sure the ceiling/wall is strong enough to hold the  
unit’s weight. It may be necessary to construct a strong  
wood or metal frame to provide added support.  
For safe installation and trouble-free operation, you  
must:  
…In a Room  
G
Carefully read this instruction booklet before beginning.  
Properly insulate any tubing run inside a room to prevent  
“sweating” that can cause dripping and water damage to  
walls and floors.  
G
Follow each installation or repair step exactly as shown.  
G
Observe all local, state, and national electrical codes.  
G
Pay close attention to all warning and caution notices  
When Connecting Refrigerant Tubing  
given in this manual.  
This symbol refers to a hazard  
or unsafe practice which can  
result in severe personal injury  
• Do not add any refrigerant, air, or substance into the  
refrigeration circuit other than the designated refrigerant  
(R410A). Adding anything other than the specified refrig-  
erant may cause the pressure to rise excessively in the  
refrigeration circuit, rupturing the circuit and causing injury  
or damage.  
WARNING  
or death.  
This symbol refers to a hazard  
or unsafe practice which can  
result in personal injury or prod-  
uct or property damage.  
CAUTION  
• Use all-new tubing and flare nuts to make the tubing con-  
nections. Using any previous parts (from R22-based sys-  
tems) may result in damage to the equipment, and may  
lead to the refrigeration circuit rupturing, causing a seri-  
ous accident.  
If Necessary, Get Help  
These instructions are all you need for most installation  
sites and maintenance conditions. If you require help for a  
special problem, contact our sales/service outlet or your  
certified dealer for additional instructions.  
• Apply refrigerant lubricant to the matching surfaces of  
the flare and union tubes before connecting them, then  
tighten the nut with a torque wrench for a leak-free  
connection.  
In Case of Improper Installation  
The manufacturer shall in no way be responsible for improp-  
er installation or maintenance service, including failure to  
follow the instructions in this document.  
• Check carefully for leaks before starting the test run.  
When Servicing  
SPECIAL PRECAUTIONS  
Turn the power OFF at the main power box (mains) before  
opening the unit to check or repair electrical parts and  
wiring.  
WARNING  
When Wiring  
ELECTRICAL SHOCK CAN CAUSE SEVERE  
PERSONAL INJURY OR DEATH. ONLY A  
QUALIFIED, EXPERIENCED ELECTRICIAN  
SHOULD ATTEMPT TO WIRE THIS SYSTEM.  
• Keep your fingers and clothing away from any moving  
parts.  
• Clean up the site after you finish, remembering to check  
that no metal scraps or bits of wiring have been left inside  
the unit being serviced.  
• Do not supply power to the unit until all wiring and tubing  
are completed or reconnected and checked.  
• Highly dangerous electrical voltages are used in this  
system. Carefully refer to the wiring diagram and these  
instructions when wiring. Improper connections and  
inadequate grounding can cause accidental injury or  
death.  
Others  
CAUTION  
• Ground the unit following local electrical codes.  
• Connect all wiring tightly. Loose wiring may cause over-  
heating at connection points and a possible fire hazard.  
• Ventilate any enclosed areas when installing or testing  
the refrigeration system. Escaped refrigerant gas, on  
contact with fire or heat, can produce dangerously  
toxic gas.  
When Transporting  
• Confirm upon completing installation that no refrigerant  
gas is leaking. If escaped gas comes in contact with a  
stove, gas water heater, electric room heater or other heat  
source, it can produce dangerously toxic gas.  
Be careful when picking up and moving the indoor and out-  
door units. Get a partner to help, and bend your knees when  
lifting to reduce strain on your back. Sharp edges or thin alu-  
minum fins on the air conditioner can cut your fingers.  
2
1. General  
6. Sabre saw or key hole saw  
7. Hacksaw  
8. Core bits  
9. Hammer  
10. Drill  
This booklet briefly outlines where and how to install the  
air conditioning system. Please read over the entire set  
of instructions for the indoor and outdoor units and make  
sure all accessory parts listed are with the system before  
beginning.  
11. Tube cutter  
1-1. Tools Required for Installation (not supplied)  
1. Standard screwdriver  
12. Tube flaring tool  
13. Torque wrench  
14. Adjustable wrench  
15. Reamer (for deburring)  
2. Phillips head screwdriver  
3. Knife or wire stripper  
4. Tape measure  
5. Carpenter’s level  
1-2. Accessories Supplied with Unit  
Table 1  
Parts  
Figure  
Q’ty  
Parts  
Figure  
Q’ty  
Parts  
Clamp  
Figure  
Q’ty  
Truss-head  
Remote  
control unit  
Tapping screw  
Phillips  
1
10  
1
5/32  
/8" (4 16 mm)  
5
Remote control  
unit holder  
1
2
8
2
Rawl plug  
Air clean filter  
Packed in the indoor unit.  
Drain hose  
adapter  
AAA alkaline  
battery  
1
1-3. Optional Copper Tubing Kit  
Copper tubing for connecting the outdoor unit to the  
indoor unit is available in kits which contain the narrow  
and wide tubing, fittings and insulation. Consult your  
nearest sales outlet or A/C workshop.  
2. Foamed polyethylene insulation for the specified  
copper tubes as required to precise length of tubing.  
Wall thickness of the insulation should be not less  
than 5/16" (8 mm).  
3. Use insulated copper wire for field wiring. Wire size  
varies with the total length of wiring. Refer to 3-6.  
Wiring Instructions for details.  
1-4. Type of Copper Tube and Insulation Material  
If you wish to purchase these materials separately from  
a local source, you will need:  
1. Deoxidized annealed copper tube for refrigerant tub-  
ing as detailed in Table 2.  
Check local electrical codes  
and regulations before  
obtaining wire. Also, check  
any specified instructions or  
limitations.  
CAUTION  
Cut each tube to the appropriate lengths 1' to 1'4"  
(30 cm to 40 cm) to dampen vibration between units.  
Table 2  
Narrow Tube  
Model  
Wide Tube  
Outer Dia.  
Thickness  
Outer Dia.  
Thickness  
KMS0772  
KMS0972  
KMS1272  
KMS1872  
KMS2472  
1/4" (6.35 mm)  
1/4" (6.35 mm)  
1/4" (6.35 mm)  
1/4" (6.35 mm)  
1/4" (6.35 mm)  
0.0314" (0.8 mm)  
0.0314" (0.8 mm)  
0.0314" (0.8 mm)  
3/8" (9.52 mm)  
3/8" (9.52 mm)  
3/8" (9.52 mm)  
0.0314" (0.8 mm)  
0.0314" (0.8 mm)  
0.0314" (0.8 mm)  
0.0314" (0.8 mm) 1/2" (12.70 mm) 0.0314" (0.8 mm)  
0.0314" (0.8 mm) 5/8" (15.88 mm) 0.0393" (1.0 mm)  
3
1-5. Additional Materials Required for Installation  
1. Refrigeration (armored) tape  
2. Insulated staples or clamps for connecting wire  
(See local codes)  
3. Putty  
4. Refrigeration lubricant  
5. Clamps or saddles to secure refrigerant tubing  
Indoor unit  
2. Installation Site Selection  
2-1. Indoor Unit  
To prevent abnormal heat generation  
WARNING  
and the possibility of fire, do not  
place obstacles, enclosures and  
grilles in front of or surrounding the  
air conditioner in a way that may  
block air flow.  
Drain hose  
Outside drainage  
AVOID:  
G direct sunlight.  
Fig. 1  
G nearby heat sources that may affect performance of the  
unit.  
6" (15 cm)  
min.  
2" (5 cm)  
min.  
2" (5 cm)  
min.  
G areas where leakage of flammable gas may be expected.  
G placing or allowing any obstructions near the A/C inlet or  
outlet.  
Front View  
G installing in rooms that contain instant-on (rapid-start)  
fluorescent lamps. (These may prevent the A/C from  
receiving signals.)  
Fig. 2  
Tubing length (L1)  
INDOOR  
UNIT (1)  
G places where large amounts of oil mist exist.  
INDOOR  
G installing in locations where there are devices that  
UNIT (2)  
generate high-frequency emissions.  
Elevation  
L2  
L3  
difference (H1) OUTDOOR  
UNIT  
H2  
H3  
DO:  
G select an appropriate position from which every corner of  
INDOOR  
UNIT (3)  
H4  
INDOOR  
L4  
UNIT (4)  
the room can be uniformly cooled. (High on a wall is best.)  
Fig. 3a  
G select a location that will hold the weight of the unit.  
G select a location where tubing and drain hose have the  
shortest run to the outside. (Fig. 1)  
CAUTION  
G allow room for operation and maintenance as well as  
Indoor unit  
Wall  
unrestricted air flow around the unit. (Fig. 2)  
For stable operation of the  
air conditioner, do not  
install wall-mounted type  
indoor units less than 5'  
(1.5 m) from floor level.  
G install the unit within the maximum elevation difference  
(H1, H2, H3, H4) above or below the outdoor unit and  
within a total tubing length (L1+L2+L3, L1+L2+L3+L4)  
from the outdoor unit as detailed in Table 3 and Fig. 3a.  
Minimum height  
from floor level  
5' (1.5 m)  
Floor level  
Fig. 3b  
4
G Install the indoor unit more than 3.3' (1 m) away from any  
antenna or power lines or connecting wires used for tele-  
vision, radio, telephone, security system, or intercom.  
Electrical noise from any of these sources may affect  
operation.  
G install in a sturdy manner to avoid increased operating  
noise.  
Table 3  
Max.  
Allowable  
Tubing Length  
per unit  
Max. Allowable Total  
Tubing Length  
at shipment  
Limit of  
Total Tubing Length  
(L1+L2+L3) or  
(L1+L2+L3+L4)  
(ft.)  
Limit of Elevation  
Difference  
(H1, H2, H3, H4)  
(ft.)  
Required Amount  
of Additional  
Refrigerant  
Model  
(L1+L2+L3) or  
(L1+L2+L3+L4)  
(ft.)  
(oz./ft.)*  
(ft.)  
CM1972/CLM1972  
CM2472/CLM2472  
CM3172/CLM3172  
82  
82  
150 (L1+L2+L3)  
150 (L1+L2+L3)  
50  
50  
50  
150 (L1+L2+L3+L4)  
150 (L1+L2+L3+L4)  
200 (L1+L2+L3+L4)  
230 (L1+L2+L3+L4)  
0.22  
0.22  
100  
* If total tubing length becomes 150 to 200 ft. (Max.) or 150 to 230 ft. (Max.), charge additional refrigerant (R410A) by 0.22 oz./ft.  
No additional charge of compressor oil is necessary.  
2-2. Embedding the Tubing and Wiring  
G Before beginning embedding installation work, consult  
fully with agencies or offices related to the building’s  
foundation, construction, electricity, and water.  
G Wait to make connections to the embedded portion.  
Each connection step is described later in this  
manual.  
G Securely cover the end of the embedded tubing to  
prevent intrusion of dirt or moisture.  
G If an embedded tube is to be left for a long time, fill  
the tube with nitrogen and seal both ends securely.  
If a tube is left open for an extended time, moisture in  
the air inside the tubing may condense into water  
droplets, and lead to water contamination of the refrig-  
erant circuit.  
G In order to prevent insulation breakdown and ground  
faults, do not allow wiring ends to come in contact with  
rainwater, or be subjected to condensation or dew.  
G Apply sufficient thermal insulation to the refrigerant  
tubing and drain pipes.  
5
3. How to Install the Indoor Unit  
3-1. Remove the Rear Panel from the Unit  
(1) Remove and discard the set screw on the rear  
panel. (Fig. 6)  
(2) Press the 2 L marks on the frame cover and disen-  
gage the stationary tabs from the frame. (Fig. 7)  
Set screw only for transportation  
(3) Remove the rear panel.  
Fig. 6  
NOTE  
Tubing can be extended in 5 directions as shown in Fig.  
8. Select the direction you need providing the shortest  
run to the outside unit.  
Rear panel  
G When left tubing is to be done, switch the drain hose  
and drain cap. (For details, refer to “Switching drain  
hose and drain cap” on page 14.)  
3-2. Make a Hole  
(1) Place the rear panel from the indoor unit on the wall  
at the location selected. Make sure the panel is hori-  
zontal, using a carpenter’s level or tape measure to  
measure down from the ceiling. Wait until after cut-  
ting the hole before attaching the rear panel to the  
wall.  
marks  
Fig. 7  
Right-rear  
tubing  
(recommended)  
Left  
tubing  
(2) Determine which side of the unit you should make  
the hole for tubing and wiring. (Fig. 9a or 9b)  
Left-rear  
tubing  
Right tubing  
NOTE  
Downward tubing  
In the case of left-rear tubing, use the measurement  
points from the edge of the rear panel for precise place-  
ment of the hose outlet. (Fig. 9a or 9b)  
Fig. 8  
(KMS0772, KMS0972, KMS1272)  
(3) Before making the hole, check carefully that no  
studs or pipes are directly run behind the spot to be  
cut.  
2-3/4" (70 mm)  
Also avoid areas where elec-  
trical wiring or conduits are  
located.  
CAUTION  
The above precautions are also applicable if tubing  
goes through the wall in any other location.  
Fig. 9a  
(KMS1872, KMS2472)  
2-3/8" (60 mm)  
Fig. 9b  
6
(4) Using a sabre saw, key hole saw or hole-cutting drill  
attachment, cut a hole in the wall. See Table 4 and  
Fig. 10.  
NOTE  
Hole should be made at a slight downward slant to the  
outdoor side.  
Table 4  
Indoor  
side  
Outdoor  
side  
Hole Dia.  
KMS0772/0972/1272  
KMS1872/2472  
2-9/16" (65 mm)  
3-5/32" (80 mm)  
(5) Measure the thickness of the wall from the inside  
edge to the outside edge and cut PVC pipe at a  
slight angle 1/4" (6 mm) shorter than the thickness of  
the wall. (Fig. 11)  
Fig. 10  
PVC pipe (Locally purchased)  
(6) Place the plastic cover over the end of the pipe (for  
indoor side only) and insert the pipe in the wall.  
(Fig. 12)  
Cut at slight angle  
3-3. Install the Rear Panel on the Wall  
Fig. 11  
Be sure to confirm that the wall is strong enough to sus-  
pend the unit.  
INSIDE  
OUTSIDE  
PVC pipe  
Wall  
See either Item a) or b) below depending on the wall type.  
Plastic cover  
(Locally purchased)  
a) If Wooden Wall  
Slight  
angle  
(1) Attach the rear panel to the wall with the 8 screws  
provided. (Fig. 13a or 13b)  
Fig. 12  
If you are not able to line up the holes in the rear  
panel with the beam locations marked on the wall,  
use rawl plugs or toggle bolts to go through the  
holes on the panel or drill 3/16" (5 mm) dia. holes in  
the panel over the stud locations and then mount the  
rear panel.  
(KMS0772, KMS0972, KMS1272)  
(2) Double check with a carpenter’s level or tape mea-  
sure that the panel is level. This is important to  
install the unit properly. (Fig. 14)  
Fig. 13a  
(3) Make sure the panel is flush against the wall. Any  
space between the wall and unit will cause noise  
and vibration.  
(KMS1872, KMS2472)  
b) If Block, Brick, Concrete or Similar Type Wall  
Make 3/16" (4.8 mm) dia. holes in the wall. Insert rawl  
plugs for appropriate mounting screws. (Fig. 15)  
Fig. 13b  
3/16"  
(4.8 mm) dia. hole  
Rawl plug  
Fig. 14  
Fig. 15  
7
Grille  
Air intake grille  
3-4. Remove the Grille to Install the Indoor Unit  
3-4-1. Indoor unit types  
(KMS0772, KMS0972, KMS1272)  
Basically, these models can be installed and wired without  
removing the grille. If access to any internal part is needed,  
follow the steps as given below.  
Fig. 16a  
Be sure to wear work gloves  
CAUTION  
during installation to avoid being  
cut by the sharp aluminum fins  
of the heat exchanger.  
How to remove the grille  
(1) Grasp both ends of the air intake grille, and remove it by  
opening towards the front and pulling towards you. (Fig.  
16a)  
Screw cover  
Fig. 16b  
Cover  
(2) Remove the 2 screws. (Fig. 16b)  
Thermistor  
(3) Remove the screw on the right side cover plate and  
open the cover. (Fig. 17a)  
(4) Take out the thermistor from the grille. (Fig. 17b)  
(5) Pull the lower part of the grille toward you to remove.  
(Fig. 18a)  
Thermistor  
Fig. 17b  
Fig. 17a  
(6) Use a standard screwdriver to push on the tabs to  
remove the grille.  
Tab  
*
Grille  
Frame  
How to replace the grille  
*
(1) Reinstall the grille into the lower part while aligning  
its tabs on the upper part. (Fig. 18b) Insert the tabs  
in the slots and push the lower part of the grille back  
into position.  
Tab  
(2) Make sure that the grille and frame are firmly fitted  
together by engaging the tabs.  
Fig. 18a  
(3) Attach the thermistor on the grille. (Fig. 17a)  
*
(4) Close the cover and replace the screw. (Fig. 17a)  
*
(5) Affix the grille with the 2 previously removed screws.  
(Fig. 16b)  
(6) Install the air intake grille.  
(a) Allow the edge of the air intake grille to slide into  
the top of the indoor unit, and then insert it all  
the way inside. (Fig. 19a)  
Fig. 18b  
(b) Press the bottom right and left corners of the air  
intake grille to attach it to the indoor unit. (Fig. 19b)  
Groove  
NOTE  
Pin  
Attach so that the round pins at the top right and left corners  
of the air intake grille are inserted into the grooves at the top  
right and left of the  
indoor unit.  
Fig. 19b  
Fig. 19a  
8
Grille  
Air intake grille  
3-4-2. Indoor unit types  
(KMS1872, KMS2472)  
Basically, these models can be installed and wired with-  
out removing the grille. If access to any internal part is  
needed, follow the steps as given below.  
How to remove the grille  
Fig. 16a-1  
(1) Grasp both ends of the air intake grille, and remove  
it by opening towards the front and pulling towards  
you. (Fig. 16a-1)  
(2) Remove the 3 screws. (Fig. 16b-1)  
(3) Remove the screw on the right side cover plate and  
open the cover. (Fig. 17a-1)  
Fig. 16b-1  
(4) Take out the thermistor from the grille. (Fig. 17b-1)  
Cover  
(5) Press the 3 tabs at the top of the grille and the 3  
tabs on the front face to separate the grille from the  
frame. (Fig. 18a-1)  
Thermistor  
Thermistor  
(6) Pull the grill toward you to remove it.  
How to replace the grille  
Fig. 17b-1  
Fig. 17a-1  
(1) When installing the grille, place the bottom of the  
grille into the frame first. (Fig. 18b-1)  
Tab  
Then insert the tabs on the top of the grille and on  
the front face into the frame.  
(2) Make sure that the grille and frame are firmly fitted  
together by engaging the tabs.  
(3) Attach the thermistor on the grille. (Fig. 17a-1)  
(4) Close the cover and replace the screw. (Fig. 17a-1)  
Tab  
(5) Affix the grille with the 3 previously removed screws.  
(Fig. 16b-1)  
Fig. 18a-1  
(6) Install the air intake grille.  
(a) Allow the edge of the air intake grille to slide into  
the top of the indoor unit, and then insert it all  
the way inside. (Fig. 19a-1)  
(b) Press the bottom right and left corners and cen-  
ter of the air intake grille to attach it to the indoor  
unit. (Fig. 19b-1)  
Fig. 18b-1  
NOTE  
Groove  
Attach so that the round pins at the top right and left cor-  
ners of the air intake grille are inserted into the grooves  
at the top right and left of the indoor unit.  
Pin  
Fig. 19b-1  
Fig. 19a-1  
9
3-5. Shape the Indoor Side Tubing  
(1) Arrangement of tubing by directions  
a) Right or left tubing  
Frame  
Cut out the corner of the right/left frame with a  
hacksaw or the like. (Figs. 20 and 21)  
Left tubing  
outlet  
b) Right-rear or left-rear tubing  
In this case, the corner of the frame need not be  
cut.  
(2) To mount the indoor unit on the rear panel:  
Fig. 20  
Hang the 2 mounting slots of the unit on the  
upper tabs of the rear panel. (Fig. 22)  
Frame  
3-6. Wiring Instructions  
General precautions on wiring  
Right tubing  
outlet  
(1) Before wiring, confirm the rated voltage of the unit as  
shown on its nameplate, then carry out the wiring  
closely following the wiring diagram.  
(2) Provide a power outlet to be used exclusively for  
each unit, with a power supply disconnect and cir-  
cuit breaker for overcurrent protection provided in  
the exclusive line.  
Fig. 21  
(3) To prevent possible hazard due to insulation failure,  
the unit must be grounded.  
(4) Each wiring connection must be done tightly and in  
accordance with the wiring system diagram. Wrong  
wiring may cause the unit to misoperate or become  
damaged.  
Fig. 22  
(5) Do not allow wiring to touch the refrigerant tubing,  
compressor, or any moving parts of the fan.  
(6) Unauthorized changes in the internal wiring can be  
very dangerous. The manufacturer will accept no  
responsibility for any damage or misoperation that  
occurs as a result of such unauthorized changes.  
10  
3-7. Wiring Instructions for Inter-unit Connections  
Rear  
panel  
Wall  
(1) Insert the inter-unit wiring (according to local codes)  
into the through-the-wall PVC pipe. Run the wiring  
toward the indoor side allowing approx. 10" (25 cm)  
to extend from the wall face. (Fig. 24)  
Plastic  
cover  
(2) Grasp both ends of the air intake grille, and remove  
it by opening towards the front and pulling towards  
you.  
Wiring  
10"  
(25 cm)  
(3) Remove the screw on the right side cover plate and  
open the cover. (Fig. 25)  
Fig. 24  
Fig. 25  
Fig. 26a  
(4) Route the inter-unit wiring from the back of the  
indoor unit and pull it toward the front for connec-  
tion. (Figs. 26a and 26b)  
Cover  
(5) Connect the inter-unit wiring to the corresponding  
terminals on the terminal plate (Figs. 26a and 26b)  
while referring to the wiring diagram.  
(6) Be sure to secure the wiring with the provided  
clamp.  
NOTE  
When closing the air intake grille, press the bottom right  
and left corners and center. (Fig. 27)  
Please refer to “How to replace the grille” on page 8 or 9  
for installing the air intake grille.  
Terminal  
plate  
Fig. 27  
Inter-unit  
wiring  
Earth  
plate  
Lock nut  
Top of conduit  
connector  
Fig. 26b  
11  
Loose wiring may cause the  
terminal to overheat or result  
in unit malfunction. A fire  
hazard may also exist. There-  
fore, be sure all wiring is  
tightly connected.  
WARNING  
When connecting each power wire to the corresponding  
terminal, follow the instructions “How to connect wiring  
to the terminal” and fasten the wire securely tight with  
the fixing screw of the terminal plate.  
9/32"  
(7 mm)  
(ACTUAL  
STRIP  
SIZE  
SIZE)  
How to connect wiring to the terminal  
a) For Indoor Unit  
Fig. 28  
(1) Cut the wire end with a cutting pliers, then strip the  
insulation to expose the wire about 9/32" (7 mm).  
See the label (Fig. 28) near the terminal plate.  
Solid wire  
Loop  
(2) Using a screwdriver, loosen the terminal screw on  
the terminal plate.  
(3) Insert the wire and tighten the terminal screw com-  
pletely using a screwdriver.  
Insulation  
b) For Outdoor Unit  
Fig. 29  
I For solid core wiring (or F-cable)  
Stranded wire  
(1) Cut the wire end with a cutting pliers, then strip the  
insulation to expose the solid wire about 15/16" (25  
mm). (Fig. 29)  
Ring  
connector  
(2) Using a screwdriver, remove the terminal screw(s)  
on the terminal plate.  
(3) Using the pliers, bend the solid wire to form a loop  
suitable for the terminal screw.  
Fig. 30  
Twist wire ends  
(4) Shape the loop wire properly, place it on the termi-  
nal plate and fix it securely with the removed termi-  
nal screw using a screwdriver.  
I For stranded wiring  
(1) Cut the wire end with a cutting pliers, then strip the  
insulation to expose the stranded wiring about 3/8"  
(10 mm) and tightly twist the wire ends. (Figs. 30  
and 31)  
Fig. 31  
(2) Using a screwdriver, remove the terminal screw(s)  
on the terminal plate.  
Special  
washer  
Screw  
(3) Using a ring connector fastener or pliers, securely  
clamp each stripped wire end with a ring connector.  
(Fig. 30)  
Screw and  
special washer  
Ring connector  
Terminal plate  
Ring  
connector  
Wire  
(4) Place the ring connector wire, and replace and  
tighten the removed terminal screw using a screw-  
driver. (Fig. 32)  
Wire  
Fig. 32  
12  
3-8. Mounting  
(1) To install the indoor unit, mount the indoor unit onto  
the 2 tabs on the upper part of the rear plate.  
(2) Hold down the air discharge outlet and press the  
lower part of the indoor unit until it clicks to securely  
fasten to the 2 tabs on the lower part of the rear  
plate. (Fig. 33)  
Push  
NOTE  
For tubing, choose either the right or left tubing direction  
and follow the steps below. This work can be made easi-  
er by placing padding material (such as styrofoam) at the  
rear right side of the indoor unit. (Fig. 34)  
Fig. 33  
I Right-side tubing  
(1) Shape the refrigerant tubing so that it can easily go  
into the wall hole. (Fig. 35)  
(2) Push the wiring, refrigerant tubing, and drain hose  
through the hole in the wall. Adjust the indoor unit so  
it is securely seated on the rear panel. (Fig. 36)  
Padding material  
(3) Carefully bend the tubing (if necessary) to run along  
the wall in the direction of the outdoor unit and then  
tape as far as the fittings. (See Caution on page 15  
in the outdoor unit installation manual.) The drain  
hose should come straight down the wall to a point  
where water runoff won’t stain the wall.  
Fig. 34  
Rear panel  
Cover  
Refrigerant  
tubing  
(4) Connect the refrigerant tubing to the outdoor unit.  
(After performing a leak test on the connecting part,  
insulate it with the tubing insulation. (Fig. 37a))  
Also, refer to Section 3-6. Tubing connections in the  
outdoor unit installation manual.  
Inter-unit  
wiring  
Drain hose  
(5) Assemble the refrigerant tubing, drain hose, and  
conduit (including inter-unit wiring) as shown in  
Fig. 37b.  
Fig. 35  
Refrigerant tubing  
Insulation  
Fig. 37a  
Conduit  
Drain hose  
Fig. 36  
Inter-unit wiring  
Fig. 37b  
13  
I Left-side tubing  
Rear panel  
(1) Lead the tubing and drain hose through the wall,  
allowing sufficient length for connection. Then bend  
the tubing using a tube bender to make the attach-  
ment. (Fig. 38)  
Hole in wall  
Wide tube  
Narrow tube  
Bent part  
(2) Switch the drain hose and drain cap.  
Fig. 38  
Switching drain hose and drain cap  
(a) Locate the drain hose and the drain cap. (Fig.  
39)  
(b) Remove the screws fastening the drain hose on  
the right side, and pull out the drain hose to  
remove it. (Fig. 39)  
Drain cap  
(c) Apply moderate force to pull off the drain cap  
on the left side. (If you cannot pull it off by  
hand, use a long-nose pliers.)  
Drain hose  
Fig. 39  
(d) Reattach the drain hose to the left side and the  
drain cap to the right side. (Fig. 40a)  
Drain hose  
Drain hose  
Slide the drain hose fully onto the drain pan outlet  
until the drain hose edge is pushed into the insula-  
tion. Check that the screw holes in the drain bracket  
and the drain pan outlet are aligned and securely in  
contact, then fasten them with the screw. (After  
attaching the drain hose, check that it is attached  
securely.) (Fig. 40c)  
Clamp  
Drain cap  
Drain cap  
Use a Phillips screwdriver to push the drain cap in  
firmly. (If it is difficult to push in, wet the cap with  
water first.)  
Fig. 40a  
Screw hole  
(3) Install the indoor unit on the rear panel.  
(4) Connect the tubing and wiring led inside from out-  
doors.  
Drain pan outlet  
(5) After completing a leak test, bundle the tubing  
together with armoring tape and store it inside the  
tubing storage area at the back of the indoor unit  
and hold it with clamps. (Figs. 40a and 41)  
Insulation  
Drain bracket  
Drain bracket  
Screw  
Drain hose  
Drain hose  
Fig. 40c  
Fig. 40b  
Refrigerant tubing  
Inter-unit wiring  
Conduit  
Fig. 41  
14  
To unmount indoor unit  
Press the 2 L marks on the lower part of the indoor unit  
and unlatch the tabs. Then lift the indoor unit and  
unmount. (Fig. 42)  
3-9. Drain Hose  
a) The drain hose should be slanted downward to the  
outdoors. (Fig. 43)  
b) Never form a trap in the course of the hose.  
c) If the drain hose will run in the room, insulate the  
hose with insulation* so that chilled condensation  
will not damage furniture or floors. (Fig. 44)  
Push  
* Foamed polyethylene or its equivalent is recom-  
Fig. 42  
mended.  
Do not supply power to the  
WARNING  
unit or operate it until all  
tubing and wiring to the out-  
side unit are completed.  
Slant  
Indoor  
unit  
Drain  
hose  
Risk of Electric Shock  
Fig. 43  
Condensation  
Insulation material  
(Locally purchased)  
must be used.  
Fig. 44  
15  
4. How to Test Run the Air Conditioner  
After turning on power to the air conditioner, use the remote  
controller and follow the steps below to conduct the test run.  
(1) Set the remote controller in Test Run mode.  
(Fig. 59a)  
a) Press and hold the ION button.  
b) Then press and hold the 1HR TIMER button.  
c) At the same time, press the ACL (reset) button once.  
Use a pointed object such as the tip of a pen to press  
the ACL button.  
ON/OFF  
operation  
button  
ION  
button  
• After a few seconds, “ ” appears and “oP-1” blinks in  
the remote controller display area.  
(Fig. 59b)  
1HR.  
TIMER  
button  
d) Release the 1HR TIMER button.  
e) Release the ION button.  
(2) Start Cooling mode test run by pressing the ON/OFF  
operation button of the remote controller. (Fig. 59a)  
• This starts the fan producing uncooled forced air with  
the 4 indicator lamps (OPERATION lamp, TIMER  
lamp, QUIET lamp, and ION lamp) on the main unit  
blinking. (Fig. 59c)  
• After 3 minutes, the system shifts into cooling opera-  
tion, and cool air will start to be felt. Cool mode test  
run is unaffected by the room temperature.  
ACL  
(Reset)  
button  
A
Fig. 59a  
(3) Press the ON/OFF operation button of the remote con-  
troller again to stop the test run. (Fig. 59a)  
(4) Finally press the ACL (reset) button of the remote con-  
troller to release it from Test Run mode to return to nor-  
mal mode. (Fig. 59a)  
• “ ” and “oP-1” will disappear from the remote con-  
troller display area.  
IMPORTANT  
After the test run is completed, be sure to press the ACL  
(reset) button to return to normal mode. The air conditioner  
will not operate correctly if this is not done.  
Fig. 59b  
OPERATION lamp  
TIMER lamp  
QUIET lamp  
ION lamp  
Fig. 59c  
16  
5. Remote Control Unit Installation Position  
The remote control unit can be operated from either a  
non-fixed position or a wall-mounted position.  
To ensure that the air conditioner operates correctly, do  
not install the remote control unit in the following places:  
G In direct sunlight  
G Behind a curtain or other place where it is covered  
G More than 26' (8 m) away from the air conditioner  
G In the path of the air conditioner’s airstream  
G Where it may become extremely hot or cold  
G Where it may be subject to electrical or magnetic  
interference  
G Where there is an obstacle between the remote con-  
trol unit and the air conditioner (since a check signal  
is sent from the remote control unit every 5 minutes)  
5-1. Mounting on a Wall  
Before mounting the remote control unit, press the  
ON/OFF operation button at the mounting location to  
make sure that the air conditioner operates from that  
location. The indoor unit should make a beeping sound  
to indicate that it has received the signal.  
Rear side  
Remote control unit mount  
Press  
Mounting screws  
5/32 × 5/8" (4 × 16 mm)  
(Included)  
Hole  
Set in  
place  
To prevent loss of the remote control  
unit, you can connect the remote  
control unit to the mount by passing  
a string through the remote control  
unit and attachment hole.  
To take out the remote control unit, pull it forward.  
Fig. 61  
17  
6. Address Switch  
Tab  
6-1. Address Setting of the Remote Control Unit  
The address can be set in order to prevent interference  
between remote controllers when two Sanyo indoor units  
are installed near each other. The address is normally  
set to “A.” To set a different address, it is necessary to  
change the address on the second remote controller.  
Fig. 62  
NOTE  
Once changed, you cannot restore the original address  
setting of the air conditioner.  
(1) Switch on the power source.  
(2) Break the address-setting tab marked “A” on the  
second remote controller to change the address  
(Fig. 62). When the tab is removed, the address is  
automatically set to B (Fig. 63).  
ACL button  
(3) Press and hold the remote controller ION button and  
1 HR TIMER button. At the same time, press the  
ACL(reset) button. Use a thin object such as the tip  
of a pen to press the ACL button. When this has  
been done, “oP-1” (test run) appears, blinking, in the  
remote controller clock display area.  
Fig. 63  
(4) Each time the 1 HR TIMER button is pressed, the  
display changes as shown below. Press this button  
2 times to change the display to “oP-7” (address  
setting). (Fig. 64)  
Test run mode  
Selfdiagnostic mode  
Adress setting mode  
ON/OFF  
operation  
button  
ION  
button  
(5) “oP-7” has now been selected for address setting.  
1HR.  
(6) Press the ON/OFF operation button on the remote  
controller. (Fig. 64) Check that the “beep”signal-  
received sound is heard from the second indoor unit  
(approximately 5 times). The sound you hear is the  
signal that the remote controller address has been  
changed.  
TIMER  
button  
(7) Finally press the remote controller ACL (reset) but-  
ton to cancel the blinking “oP-7” display.  
(Fig. 64)  
Changing of the second remote controller address is  
now completed.  
ACL  
(Reset)  
button  
A
Fig. 64  
18  
7. Connecting a Home Automation device  
The HA (white) 4P terminal is located on the indoor unit PCB. If a HA device will  
be used, connect it to this terminal.  
8. Installation Check Sheet  
The strength of the installation location is sufficient to support the A/C weight.  
The indoor and outdoor units are installed level and vertically.  
The power and voltage are as specified.  
Inter-unit cables are securely inserted into the  
terminal block.  
Inter-unit cables are securely fixed.  
The power cord and inter-unit cables are not connected anywhere along their  
paths.  
The ground wire is securely connected.  
Thermal insulation has been applied to the tubing connections.  
Drain connections are secure and water drains properly.  
Putty has been used to close the hole in the wall.  
Remote controller signals are being positively received.  
19  
For Parts Service Contact  
SANYO Fisher Service Company  
A Division of SANYO North America Corporation  
1165 Allgood Road, Suite 22, Marietta, GA 30062 U.S.A.  
Sanyo Canada Inc.  
1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA  
Sept. / 2006 (T)  

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