Friedrich MR18Y3H User Manual

Models  
Indoor Units  
MW18Y3H MW18Y3H  
MR18Y3H MR24Y3H  
Outdoor Units  
SPECIFICATIONS  
ELECTRICAL DATA  
Cool & heat inverter  
TYPE  
MW24Y3H  
INDOOR UNIT  
MW18Y3H  
MR18Y3H  
MR24Y3H  
OUTDOOR UNIT  
COOLING CAPACITY  
HEATING CAPACITY  
POWER SOURCE  
FREQUENCY  
18,000 BTU/h 5.28 kW  
22,000 BTU/h 6.50 kW  
21,600 BTU/h 6.30 kW 27,600 BTU/h 8.10 kW  
208 V / 230 V  
60 Hz  
208 V / 230 V  
60 Hz  
7.9 A  
Cooling  
RUNNING CURRENT  
Heating  
6.3 A  
8.0 A  
10.5 A  
Cooling  
INPUT WATTS  
Heating  
1.38 kW  
1.80 kW  
1.76 kW  
2.38 kW  
E.E.R.  
Cooling 13.0 BTU/kW 3.83 kW/kW 12.5 BTU/kW 3.69 kW/kW  
Heating 12.0 BTU/kW 3.50 kW/kW 11.6 BTU/kW 3.40 kW/kW  
COP  
MOISTURE REMOVAL  
AIR CIRCULATION HIGH  
MAXIMUM CURRENT  
5.9 Pt/h 2.8 L/hr  
541 cfm 920 m3/hr  
14.5 A  
6.3 Pt/h 3.0 L/hr  
659 cfm 1,120 m3/hr  
15.5 A  
FAN MOTOR  
POWER SOURCE  
230 V  
230 V  
High speed  
1,260 r.p.m.  
1,020 r.p.m.  
900 r.p.m.  
770 r.p.m.  
620 r.p.m.  
620 r.p.m.  
1,480 r.p.m.  
1,220 r.p.m.  
1,020 r.p.m.  
900 r.p.m.  
800 r.p.m.  
850 r.p.m.  
Middle speed  
Low speed  
Quiet  
INDOOR UNIT  
Cool  
OUTDOOR UNIT  
Heat  
NOISE LEVEL  
INDOOR UNIT  
Cool 43 dB / Heat 44 dB Cool 49 dB / Heat 49 dB  
Cool 47 dB / Heat 50 dB Cool 54 dB / Heat 55 dB  
OUTDOOR UNIT  
COMPRESSOR AND REFRIGERANT  
TYPE  
Hermetic type, 6 pole, DC inverter motor, Rotary  
DISCRIMINATION  
WEIGHT WITH OIL  
PRECHARGED REFRIGERANT  
REFRIGERANT TYPE  
N-TF30ND1A  
34.2 lb 15.5 kg  
4 lb 10 oz 2,100 g  
R410A  
Pipe length  
66 ft 20 m  
4 lb 10 oz 2,100 g  
7 lb 4 oz 3,300 g  
0.43 oz/ft 40 g/m  
FULL CHARGE  
164 ft 50 m  
ADDITIONAL CHARGE  
DIMENSIONS  
INDOOR UNIT  
H x W x D  
12-5/8 x 39-1/4 x 9 inch 320 x 998 x 228 mm  
32-3/4 x 35-3/8 x 13 inch 830 x 900 x 330 mm  
OUTDOOR UNIT  
H x W x D  
WEIGHT  
INDOOR UNIT  
Shipping / Net  
Shipping / Net  
40 lbs / 31 lbs 18 kg / 14 kg  
150 lbs / 135 lbs 68 kg / 61 kg  
OUTDOOR UNIT  
2
DIMENSIONS  
INDOOR UNIT  
Unit : inch (mm)  
12-5/8"  
(320)  
39-1/4" (998)  
9" (228)  
Drain pipe diameter  
Inside : 5/8 inch (16 mm)  
Outside : 1-3/32 inch (28 mm)  
Liquid pipe diameter : 3/8 inch (9.52 mm)  
Gas pipe diameter : 5/8 inch (15.88 mm)  
3
OUTDOOR UNIT  
Unit : inch (mm)  
1/2"  
(12)  
13" (330)  
35-1/2" (900)  
3"(77)  
1-1/4"  
(31)  
15-3/4" (400)  
Air Flow  
25-5/8" (650)  
5-3/4" (147)  
6-3/4" (170)  
4
REFRIGERANT  
SYSTEM DIAGRAM  
Heat exchanger  
( INDOOR )  
3-Way valve  
(Large)  
3-Way valve  
(Small)  
Muffler  
Pressure  
switch  
Strainer  
Expansion  
valve  
4-Way valve  
Heat exchanger  
( OUTDOOR )  
Strainer  
Cooling flow  
Heating flow  
Refrigerant pipe diameter  
Liquid : 3/8" (9.52 mm)  
Gas : 5/8" (15.88 mm)  
5
W 1 9  
W 2 0  
B L A C K  
W H I T E  
T M 6 0 1  
T M 6 0 0  
W 9  
B L A C K  
W 2 1  
Y
G R A  
W H I T E  
B L A C K  
Y E L L O W  
W H I T E  
W H I T E  
O R A N G E  
R E D  
B R O W N  
B L A C K  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
U
T M 3 0 5  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
V
T M 3 0 4  
W
T M 3 0 3  
C N 1 0  
C N 8  
C N 5  
C N 2  
C O N T R O L L E R  
C N 1  
)
P C B M ( A I N A S S Y P C B  
C N 3 C N 1  
C N 1 6 C N 1 4  
C N 6  
1
6
W 1 9  
W 2 0  
B L A C K  
W H I T E  
T M 6 0 1  
T M 6 0 0  
W 9  
B L A C K  
W 2 1  
Y
G R A  
W H I T E  
B L A C K  
Y E L L O W  
W H I T E  
W H I T E  
O R A N G E  
R E D  
B R O W N  
B L A C K  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
U
T M 3 0 5  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
W H I T E  
V
T M 3 0 4  
W
T M 3 0 3  
C N 1 0  
C N 8  
C N 5  
C N 2  
C O N T R O L L E R  
C N 1  
)
P C B M ( A I N A S S Y P C B  
C N 3 C N 1  
C N 1 6 C N 1 4  
C N 6  
1
7
INDOOR PCB  
CIRCUIT DIAGRAM  
CONTROL UNIT  
MW18Y3H : EZ-0090HHSE  
MW24Y3H : EZ-0090KHSE  
TERMINAL BOARD  
N
THERMAL  
FUSE 102  
1
L
SERIAL  
2
OUTDOOR UNIT  
3
EARTH  
EARTH TERMINAL  
INDICATOR PCB ASSEMBLY  
K05CY-0902HSE-D0  
TM2 TM1  
22007 22007  
W5  
GREEN  
TM4  
22007  
BLACK  
RED  
WHITE  
CONTROLLER PCB ASSEMBLY  
MW18Y3H : K08CX-0903HSE-C1  
MW24Y3H : K08CX-0904HSE-C1  
CN6-1  
CN6-2  
CN6-3  
RED  
WHITE  
BLACK  
WIRED REMOTE CONTROL UNIT  
CN11  
B07B-PASK  
CN201  
JB20-07HG  
CN2  
SJH20-05WS  
1
2
3
4
5
6
7
CN11-1  
CN11-2  
CN11-3  
CN11-4  
CN11-5  
CN11-6  
CN11-7  
RED  
1
2
3
4
5
6
7
LOUVER ( RIGHT / LEFT )  
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
WHITE  
CN2-1  
CN2-2  
CN2-3  
CN2-4  
CN2-5  
RED  
1
2
3
4
5
ORANGE  
YELLOW  
PINK  
M
BLUE  
CN5  
SJH20-06WS  
LOUVER ( UP / DOWN )  
CN14  
B3B-XH-AM  
1
2
3
4
5
6
CN5-1  
CN5-2  
CN5-3  
CN5-4  
CN5-5  
RED  
1
2
3
ORANGE  
YELLOW  
PINK  
EX IN  
M
BLUE  
CN16  
B2B-XH-AM  
1
2
EX OUT  
CN8  
B06B-PASK  
LOUVER ( DIFFUSER )  
CN8-1  
CN8-2  
CN8-3  
CN8-4  
CN8-5  
RED  
1
2
3
4
5
6
ORANGE  
YELLOW  
PINK  
CN3  
JC25-02HG  
XARR-03VF XAP-03V-1  
PIPE THERMISTOR  
M
BLACK  
CN3-1  
RED  
1
2
BLUE  
CN3-2  
WHITE  
BLACK  
CN1  
2P-SAN  
CN2-1  
CN2-2  
BLACK  
BLACK  
1
2
ROOM THERMISTOR  
FAN MOTOR  
CN10  
B06B-XARK  
CN10-6  
RED  
6
5
4
3
2
1
CN13  
B5P-SHF-1AA  
CN10-4  
CN10-3  
CN10-2  
CN10-1  
BLACK  
WHITE  
YELLOW  
BLUE  
CN13-1  
CN13-2  
CN13-3  
CN13-4  
CN13-5  
1
2
3
4
5
F. M.  
TEST  
8
< 1 / 1 0 5 W . 6 > k R 4 9  
9
INDOOR UNIT  
INDICATOR PCB ASSEMBLY  
K05CY-0902HSE-D0  
5V  
5V  
CN201  
07 JB20 / PAP  
1061 L=230  
D201  
SLR-325MC  
1
2
3
4
5
6
7
GREEN  
D202  
SLR-325DC  
ORANGE  
C201  
0.1  
<F>  
GREEN  
D203  
SLR-325MC  
5V  
I C201  
GP1UM261RKVF  
R201  
47  
<1/4W>  
2
1
3
VCC  
OUT  
GND  
+ C202  
47/  
10V  
10  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
W H I T E G 2 W 4 A  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
B R O W N  
W
A
G 2 4  
R E D G 2 W 4 A  
O R A N G E W G 2 4  
U L 1 0 0 7  
U L 1 0 0 7  
U L 1 0 0 7  
A
Y E L L O G W 2 W 4 A  
U L 1 0 0 7  
B L A C K  
W H I T E  
W A G 2 4  
U L 1 4 3 0  
U L 1 4 3 0  
W A G 2 4  
Y
G R A  
W A G 2 0  
U L 3 2 7 1  
U L 3 2 7 1  
B L A C K  
W A G 1 4  
W H I T E  
B L A C K  
W A G 2 0  
U L 3 2 7 1  
U L 3 2 7 1  
W A G 2 0  
11  
12  
13  
14  
15  
OUTDOOR UNIT  
MR18Y3H  
CAPACITOR PCB ASSEMBLY  
K05FB-0902HUE-P0  
W12  
B
WHITE  
W7  
B
YELLOW  
P
C201  
660/  
450V  
C203  
660/  
450V  
+
+
W8  
B
BLUE  
W13  
B
VIOLET  
N
POWER_G  
MR24Y3H  
CAPACITOR PCB ASSEMBLY  
K05FB-0903HUE-P0  
W12  
B
WHITE  
W7  
B
YELLOW  
P
C200 - C202  
+
660/  
450V  
x 3  
+
+
W8  
B
BLUE  
W13  
B
VIOLET  
N
POWER_G  
16  
ERROR DETECTION  
Display  
Operation  
LED  
Error  
Error  
Timer LED  
2 flash  
3 flash  
4 flash  
5 flash  
8 flash  
2 flash  
3 flash  
2 flash  
3 flash  
4 flash  
8 flash  
2 flash  
3 flash  
4 flash  
7 flash  
8 flash  
2 flash  
3 flash  
5 flash  
6 flash  
2 flash  
3 flash  
2 flash  
3 flash  
5 flash  
2 flash  
3 flash  
4 flash  
Serial signal (reverse) error, at operation start up  
Serial signal (reverse) error, during oeration  
Serial signal (forward) error, at operation start up  
Serial signal (forward) error, during operation  
Wired remote controller error  
Serial signal error  
Normal  
Indoor temperature thermistor open / short  
Heat exchanger middle thermistor open / short  
Discharge thermistor open / short  
Heat exchanger thermistor open  
Outdoor temperature thermistor open / short  
Compressor temperature thermistor open / short  
Forced automatic SW welded  
Indoor unit thermistor error  
2 flash  
Outdoor unit thermistor error  
3 flash  
Main relay welded  
Indoor unit control error  
4 flash  
Power interruption error  
VDD permanent stop protection  
reverse VDD permanent stop protection  
Current trip error  
CT abnormal  
Outdoor unit control error  
5 flash  
Compressor location detection error  
Outdoor unit fan drive system abnormal  
Abnormal lock  
Indoor fan motor error  
Refrigerant cycle error  
6 flash  
7 flash  
Abnormal rotation  
Discharge Temperature abnormal  
Cooling high pressure abnormal rise  
Pressure switch trouble  
Active filter voltage trouble (second time)  
Active filter voltage trouble (first time)  
PFC circuit error  
Optional function error  
Model information error  
8 flash  
0.1 sec on/off 0.1 sec on/off Model information error  
17  
18  
PARTS  
INDOOR UNIT  
5
4
5
2
4
3
Ref Descriprion  
Part number  
1
2
3
4
5
Front Panel Total Assy  
67201282  
67201791  
67201501  
67201502  
67200936  
67201294  
67201533  
Front Panel  
Intake Grille Assy  
Air Filter  
1
Clamper Grille  
-- Remote  
-- Remote Holder  
19  
16  
INDOOR  
UNIT  
18  
19  
20  
23  
25  
21  
24  
11  
Ref Descriprion  
Part number  
Ref Descriprion  
Part number  
11 Casing Assy  
16 Drain Cap  
67201281  
67201509  
67201560  
67201561  
67201507  
67201506  
21 Louver U  
22 Louver Z  
67201565  
67201566  
67201562  
67201563  
67201564  
67201277  
67201274  
67201271  
67201289  
67201290  
23 Diffuser U  
24 Diffuser Z  
25 Spring C  
17 Drain Hose Assy  
18 Bush B  
19 Spacer B  
26 Piller A  
20 R and L Louver  
27 Joint B  
-- Fan Guard  
-- Fan Guard Holder Right  
-- Fan Guard Holder Left  
20  
INDOOR UNIT  
37  
33  
35  
36  
34  
32  
39  
38  
Ref Descriprion  
Part number  
31  
31 Evaporator Total Assy  
32 Water Seal  
67201283  
67201552  
67201515  
67201516  
67201553  
67201554  
67201555  
67201504  
67200922  
67201280  
33 Evaporater Holder R  
34 Evaporater Holder L  
35 Rear Bracket  
40  
36 Filter Guide  
37 Filter Guard  
38 Crossflow Fan Assy  
39 Bearing C Assy  
40 Room Therimistor Holder  
21  
42  
41  
INDOOR UNIT  
43  
50  
45  
46  
51  
44  
47  
Ref Descriprion  
Part number  
41 Controller PCB (18)  
41 Controller PCB (24)  
42 Control Box  
67201299  
67201380  
67201567  
67201568  
67201569  
67201570  
67201571  
67201526  
67201527  
67201528  
67201381  
67201298  
67201574  
49  
43 Control Cover  
44 Motor Case  
45 Terminal Earth  
46 DC Brushless Motor  
47 Motor, Step  
48  
48 Motor, Step  
49 Motor, Step  
50 Terminal  
51 Indicator PCB Assy  
-- Pipe Thermistor  
Controller PCB includes a room thermistor.  
22  
1
PARTS  
OUTDOOR UNIT  
5
6
Ref. Description  
Part number  
1
2
3
5
6
Top Panel Sub Assy  
67201600  
67201939  
67201604  
67201940  
67201499  
67201836  
67201914  
67201707  
Front Panel Sub Assy  
Service Panel Sub Assy  
Right Panel Sub Assy  
Valve Cover  
-- Protective Net  
-- Drain Assy  
-- Drain Cap  
2
3
23  
OUTDOOR UNIT  
13  
12  
14  
15  
11  
17  
Ref. Description  
11 Base Assy  
Part number  
67201497  
67201938  
67201875  
67201820  
67201847  
67201607  
67201496  
12 Separate Wall Sub Assy  
13 Condenser A Assy  
14 Motor Bracket Sub Assy  
15 Fan Motor  
16  
16 Propeller Fan Assy  
17 Valve Plate  
24  
OUTDOOR UNIT  
26  
30  
28  
29  
21  
32  
Ref. Description  
Part number  
21 Strainer Assy  
67201611  
67201837  
67201876  
67201867  
67201618  
67201483  
67201629  
67201874  
67201621  
67201488  
67201422  
67201792  
22 3-Way Valve Sub Assy  
23 3-Way Valve Assy  
25 Compressor Sub Assy  
26 Accumulator  
31  
22  
27 Accumulator Support Assy  
28 4-Way Valve  
29 Solenoid  
30 Pressure Switch  
31 Expansion Valve Assy  
32 Expansion Valve Coil  
-- Muffler  
27  
23  
25  
25  
49  
42  
OUTDOOR UNIT  
51  
Connector : Orange  
Connector : Blue  
43  
Connector : Green  
47  
Connector  
: Red  
48  
44  
46  
52  
54  
53  
Ref. Description  
Part number  
41 PCB Case Assy  
42 Inverter Case  
67201832  
67201930  
67201850  
67201628  
67201851  
67201852  
43 ACTPM  
44 PTC Thermistor  
45 Inverter PCB Assy (18)  
45 Inverter PCB Assy (24)  
45  
46 Power Supply PCB Assy (18)  
46 Power Supply PCB Assy (24, 30)  
47 Capacitor PCB Assy (18)  
47 Capacitor PCB Assy (24, 30)  
48 Transistor PCB Assy (18)  
48 Transistor PCB Assy (24, 30)  
49 Choke Coil  
67201857  
67201856  
67201848  
67201849  
67201853  
67201854  
67201868  
67201908  
67201869  
67201871  
67201872  
67201031  
50  
41  
50 Terminal  
51 Discharge Thermistor  
52 Outdoor Thermistor  
53 Compressor Thermistor  
54 Heat Exchanger Thermistor  
26  
FRIEDRICH AIR CONDITIONING CO.  
10001 Reunion Place, Ste. 500, San Antonio, TX 78216  
(210) 546-0500 877-599-5665 x 261 FAX (210) 546-0630  
Printed in the U.S.A.  

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