Mitsubishi Electronics Split Type Heat Pump Air Conditioners Pmfy P08nbmu E User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS  
July 2007  
No. OC341  
REVISED EDITION-B  
TECHNICAL & SERVICE MANUAL  
R410A / R22  
Indoor unit  
[Model names]  
Revision:  
[Service Ref.]  
• PMFY-P06/08/12/15NBMU-E1 are  
added in REVISED EDITION-B.  
• Some descriptions have been  
modified.  
PMFY-P06NBMU-E  
PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
PMFY-P06NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E  
PMFY-P08NBMU-E1  
PMFY-P12NBMU-E  
PMFY-P12NBMU-E1  
PMFY-P15NBMU-E  
PMFY-P15NBMU-E1  
• Please void OC341 REVISED  
EDITION-A.  
NOTE:  
• This manual describes only  
service data of the indoor units.  
• RoHS compliant products have  
<G> mark on the spec name  
plate.  
• For servicing RoHS compliant  
products, refer to the RoHS  
PARTS LIST.  
CONTENTS  
1. TECHNICAL CHANGES·······················2  
2. FEATURES ···········································2  
3. PART NAMES AND FUNCTIONS········3  
4. SPECIFICATION···································5  
5. OUTLINES AND DIMENSIONS············9  
6. WIRING DIAGRAM·····························10  
7. REFRIGERANT SYSTEM DIAGRAM ···12  
8. MICROPROCESSOR CONTROL·······13  
9. TROUBLESHOOTING························20  
10. DISASSEMBLY PROCEDURE···········27  
11. PARTS LIST········································30  
12. RoHS PARTS LIST·····························33  
INDOOR UNIT  
3
PART NAMES AND FUNCTIONS  
Indoor Unit  
Auto Air Swing Vane  
Disperses airflow up and  
down and adjusts the angle  
of airflow direction.  
Guide vane  
Air flow can be changed to horizontal  
by moving the guide vane to the left or right.  
Horizontal Air Outlet  
Filters  
Remove dust and pollutants  
from return air.  
Air intake  
Returns air from room.  
Wired remote controller  
Once the controllers are set, the same operation mode can be repeated by simply pressing the ON/OFF button.  
ON/OFF button  
Temperature setting buttons  
Down  
Up  
Fan Speed button  
Timer Menu button  
(Monitor/Set button)  
Filter  
button  
(<Enter> button)  
Mode button (Return button)  
Set Time buttons  
Test Run button  
TEMP.  
ON/OFF  
Check button (Clear button)  
Back  
MENU  
ON/OFF  
DAY  
FILTER  
Ahead  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
Airflow Up/Down button  
Louver button  
PAR-21MAA  
CLOCK  
OPERATION  
Timer On/Off button  
(Set Day button)  
(
Operation button)  
To return operation  
number  
Opening the  
lid  
Ventilation button  
(
Operation button)  
To go to next operation  
number  
Built-in temperature sensor  
3
Wired remote controller  
Display Section  
Day-of-Week  
“Sensor” indication  
For purposes of this explanation,  
all parts of the display are shown  
as lit. During actual operation, only  
the relevant items will be lit.  
Shows the current day of the week.  
Displayed when the remote controller  
sensor is used.  
Time/Timer Display  
Shows the current time, unless the simple or Auto Off  
timer is set.  
If the simple or Auto Off timer is set, the time to be  
switched off is shown.  
“Locked” indicator  
Indicates that remote controller but-  
tons have been locked.  
Identifies the current operation  
“Clean The Filter” indicator  
Shows the operating mode, etc.  
To be displayed on when it is time to  
clean the filter.  
*Multilanguage display is available.  
TIME SUN MON TUE WED THU FRI SAT  
TIMER  
AFTER  
Hr  
ON  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
Timer indicators  
The indicator comes on if the corre-  
sponding timer is set.  
˚F˚C  
“Centrally Controlled” indicator  
WEEKLY  
SIMPLE  
AUTO OFF  
Indicates that operation from the  
remote controller has been prohib-  
ited by a master controller.  
ONLY1Hr.  
Fan Speed indicator  
Shows the selected fan speed.  
Up/Down Air Direction indica-  
tor  
Room Temperature display  
Ventilation indicator  
Shows the room temperature. The room  
temperature display range is 46~102°F.  
The display blinks if the temperature  
is less than 46°F or 102°F or more.  
Appears when the unit is running in  
Ventilation mode.  
“Timer is Off” indicator  
Shows the direction of the  
outcoming airflow.  
Indicates that the timer is off.  
“One Hour Only” indicator  
Louver display  
Displayed if the airflow is set to  
low or downward during COOL  
or DRY mode. (Operation varies  
according to model.)  
Indicates the action of the swing louver.  
Does not appear if the louver is not  
running.  
Temperature Setting  
Shows the target temperature.  
The indicator goes off in one hour,  
when the airflow direction also  
changes.  
(Power On indicator)  
Indicates that the power is on.  
Note:  
“PLEASE WAIT” message  
This message is displayed for approximately 3 minutes when power is supplied to the indoor unit or when the unit is recovering from a power failure.  
“NOT AVAILABLE” message  
This message is displayed if an invalid button is pressed (to operate a function that the indoor unit does not have).  
If a single remote controller is used to operate multiple indoor units simultaneously that are different types, this message will not be displayed as  
far as any of the indoor units is equipped with the function.  
4
4
SPECIFICATION  
4-1. SPECIFICATIONS  
PMFY-P06NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E  
PMFY-P08NBMU-E1  
PMFY-P12NBMU-E  
PMFY-P12NBMU-E1  
PMFY-P15NBMU-E  
PMFY-P15NBMU-E1  
Item  
Power  
Single phase 208-230V 60Hz  
V·Hz  
Btu/h  
Btu/h  
kW  
kW  
A
Cooling capacity  
6,000  
6,700  
0.042  
0.042  
0.20  
8,000  
9,000  
0.042  
0.042  
0.20  
12,000  
13,500  
0.044  
0.044  
0.21  
15,000  
17,000  
0.054  
0.054  
0.26  
Heating capacity  
Cooling  
Input  
Heating  
Cooling  
Current  
Heating  
0.20  
0.20  
0.21  
0.26  
A
Exterior  
(munsell symbol)  
Unit : Galvanized sheets · Standard grilles : ABS resin acrylic coating Munsell<6.4Y 8.9/0.4>  
Height  
9-1/16<1-3/16>  
31-15/16<39-3/8>  
15-9/16<18-1/2>  
Cross fin  
in.  
Dimensions  
Width  
Depth  
in.  
in.  
Heat exchanger  
Fan No  
Line flow fan 1  
230-250-280-300  
Air flow W3  
250-280-300-320  
270-300-340-370  
CFM  
in W.G.  
kW  
External  
static pressure  
0
Fan motor  
output  
0.028  
Insulator  
Polyethylene sheet  
Air filter  
PP honey comb fabric  
Gas  
1/2"  
Pipe  
side  
dimensions  
[in.  
[in.  
[in.  
dB  
Liquid  
side  
1/4"  
1" O.D. (PVC pipe VP-20 connectable)  
32-34-36-37  
Field drain pipe size  
Noise level W3  
Product weight  
27-30-33-35  
33-35-37-39  
31<7>  
lb.  
Note 1. Rating conditions  
Cooling: Indoor: D.B. 80°F W.B. 67°F  
outdoor: D.B. 95°F W.B. 75°F  
Heating: Indoor: D.B. 70°F  
outdoor: D.B. 47°F W.B. 43°F  
Note 2. The number indicated in < > is for the grille.  
W 3. Air flow and the noise level are indicated as Low - Medium2 - Medium1 - High.  
5
4-2. ELECTRICAL PARTS SPECIFICATIONS  
Service Ref.  
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
Symbol  
Parts name  
Room temperature  
thermistor  
TH21  
TH22  
TH23  
FUSE  
MF  
Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"  
Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"  
Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k"  
250V 6A  
Liquid pipe thermistor  
Gas pipe thermistor  
Fuse  
(Indoor controller board)  
DC Brushless Motor  
8-pole OUTPUT 28W  
PN0H28-MB  
Fan motor  
MSFJC 20M23  
MV  
Vane motor  
12V/380  
"
PJV-1063  
208-240V 50/60Hz  
Drain pump  
DP  
Thermistor resistance 30_F/6.3k", 50_F/3.9k", 70_F/2.5k", 80_F/2.0k", 90_F/1.6k", 100_F/1.3k"  
Drain sensor  
DS  
DC12V Stepping motor drive  
port dimension [3.2 (0~2000pulse)  
EDM-40YGME  
Linear expansion valve  
LEV  
TB2  
TB5  
TB15  
Power supply  
terminal block  
(L1, L2, GR) Rated to 330V 30A  
w
Transmission  
terminal block  
(M1, M2, S) Rated to 250V 20A  
w
MA-remote controller  
terminal block  
(1,2) Rated to 250V 10A  
w
Note : Refer to WIRING DIAGRAM for the supplied voltage.  
w
6
4-3. AIR CAPACITY TAKEN FROM OUTSIDE  
PMFY-P·NBMU-E series are capable of taking air from outside. When taking air from outside, the duct fan is used.  
The air capacity should be 20% or less of the airflow SPEC(Hi).  
9-13/16  
11-3/8  
90-  
4-{1/8  
Fresh air intake hole  
(Knockout)  
Fresh air intake hole  
(Knockout)  
(Unit:inch)  
Service Ref.  
Air flow (Hi)  
300 CFM  
Air capacity taken from outside  
60 CFM  
PMFY-P06NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E  
PMFY-P08NBMU-E1  
320 CFM  
320 CFM  
370 CFM  
64 CFM  
64 CFM  
74 CFM  
PMFY-P12NBMU-E  
PMFY-P12NBMU-E1  
PMFY-P15NBMU-E  
PMFY-P15NBMU-E1  
Be sure to secure insulation  
material by tape, etc.  
Operation in conjunction with duct fan (Booster fan)  
Whenever the indoor unit is operating, the duct fan  
operates.  
(1)Connect the optional multiple remote controller  
adaptor (PAC-SA88HA-E) to the connector CN51  
on the indoor controller board.  
(2)Drive the relay after connecting the 12V DC relay  
between the Yellow and Orange connector lines.  
(w)Use a relay of 1W or smaller.  
~
Green  
CN51  
on  
indoor unit  
board  
5
1
Yellow  
Orange  
MB  
Connector (5P)  
Red  
Brown  
Indoor unit side  
Installation at site  
Multiple remote  
controller adapter  
PAC-SA88HA-E  
Be sure to secure insulation  
material by tape, etc.  
Indoor controller board  
MB: Electromagnetic switch power relay for duct fan.  
X: Auxiliary relay (12V DC LY-1F)  
Distance between indoor  
controller board and relay  
must be within 33 feet.  
Multiple remote  
controller adapter  
PAC-SA88HA-E  
How to read curves  
Duct characteristics  
Curve in the  
at site  
1
right graphs  
CN51  
0
Q…Designed amount of fresh air  
intake <CFM>  
A…Static pressure loss of fresh air  
intake duct system with air flow  
Q
Characteristic diagram of air capacity taken from outside of PMFY-P·NBMU-E  
0.2  
amount Q  
<in. W.G>  
B…Forced static pressure at air condi-  
tioner inlet with air flow amount Q  
<in. W.G>  
2
0.1  
00  
C…Static pressure of booster fan with  
air flow amount Q  
<in. W.G>  
2 intake  
1 intake  
D…Static pressure loss increase  
amount of fresh air intake duct  
system for air flow amount Q  
<in. W.G>  
Q
-0.1  
-0.2  
-0.3  
-0.4  
3
E…Static pressure of indoor unit with  
air flow amount Q  
Qa…Estimated amount of fresh air  
intake without D <CFM>  
<in. W.G>  
Q
0
10  
20  
30  
40  
50  
60  
70  
80  
Qa  
Air flow (CFM)  
7
4-4. NOISE CRITERION CURVES  
SPL(dB) LINE  
SPL(dB) LINE  
NOTCH  
High  
Medium1  
Medium2  
Low  
NOTCH  
High  
Medium1  
Medium2  
Low  
PMFY-P06NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P08NBMU-E1  
PMFY-P12NBMU-E1  
90  
35  
33  
30  
27  
37  
36  
34  
32  
90  
80  
70  
60  
50  
40  
30  
20  
80  
70  
60  
50  
40  
30  
NC-70  
NC-70  
NC-60  
NC-50  
NC-40  
NC-30  
NC-60  
NC-50  
NC-40  
NC-30  
APPROXIMATE  
20  
THRESHOLD OF  
HEARING FOR  
CONTINUOUS  
NOISE  
NC-20  
NC-20  
APPROXIMATE THRESHOLD OF HEARING  
FOR CONTINUOUS NOISE  
10  
10  
63  
125  
250  
500 1000 2000 4000 8000  
63  
125  
250  
500 1000 2000 4000 8000  
BAND CENTER FREQUENCIES, Hz  
BAND CENTER FREQUENCIES, Hz  
SPL(dB) LINE  
NOTCH  
High  
Medium1  
Medium2  
Low  
PMFY-P15NBMU-E  
PMFY-P15NBMU-E1  
39  
37  
35  
33  
UNIT  
90  
80  
70  
60  
50  
40  
30  
CEILING  
NC-70  
5ft  
NC-60  
NC-50  
NC-40  
NC-30  
MICROPHONE  
APPROXIMATE  
20  
THRESHOLD OF  
HEARING FOR  
CONTINUOUS  
NOISE  
NC-20  
10  
63  
125  
250  
500 1000 2000 4000 8000  
BAND CENTER FREQUENCIES, Hz  
8
5
OUTLINES AND DIMENSIONS  
Unit : in. (mm)  
PMFY-P06NBMU-E PMFY-P06NBMU-E1  
PMFY-P08NBMU-E PMFY-P08NBMU-E1  
PMFY-P12NBMU-E PMFY-P12NBMU-E1  
PMFY-P15NBMU-E PMFY-P15NBMU-E1  
( 1 0 8 )  
4 - 1 / 4  
1 0 )  
( 1  
4 - 5 / 1 6  
( 2 3 5 ) o r m o r e  
9 - 1 / 2  
9 - 1 / 1 6 ( 2 3 0 )  
1 0 )  
4 - 5 / 1 6 ( 1  
/ 1 1 6 ( 6 2 9 - 1 )  
9 - 3 / 8 ( 2 4 7 )  
O u t e r s i d e o f g 1 r 8 i l l - e 1 / 2 ( 4 7 0 )  
2 - 3 / 8 ( 6 0 )  
1 - 9 / 1 6 ( 4 0 )  
/ 1 1 6 1 ( 1 7 . 5 ) / 1 1 6 1 ( 1 7 . 5 )  
9 - 1 / 1 6 ( 2 3 0 )  
1 3 / 1 6 ( 2 0 )  
1 - 2 5 / 3 2 ( 4 5 )  
1 - 2 5 / 3 2 ( 4 5 )  
1 3 / 1 6 ( 2 0 )  
1 3 / 1 6 ( 2 0 )  
7 - 1 3 / 1 6 ( 1 9 8 ) 1 3 / 3 2 ( 1 0 )  
s p e n s i o n b o l t p i t c 1 h 3 - 3 / 8 ( 3 4 0 ) S u  
C e i l i n g o p e n i n g 1 6 - 1 5 / 1 6 ( 4 3 0 )  
O u t e r s i d e o f 1 g 8 r i - l 1 l e / 2 ( 4 7 0 )  
3 - 3 / 8 ( 9 6 )  
6 - 1 5 / 1 6 ( 1 7 6 )  
9
6
WIRING DIAGRAM  
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E  
N o .  
D I G I T D I G I T D I G I T  
C O N N E C T I O 1 N S T  
1
2 N D  
3 R D  
2
S W 1 1 S W 1 2  
S W 1 4 S W C  
0 1 9 7 6 8 5 4 3 1 2  
O F F  
O N  
S W 1  
2 3 0 V  
2 0 8 V  
S W 5  
5 4 3 1 2  
O F F  
O N  
0 1 9 8 7 6 5 4 3 1 2 5 6 4  
S W 3  
1 2 3  
O F F  
O N  
S W 4  
S W 2  
G R N  
Y L W  
O R N  
R E D  
B R N  
W H T  
R E D  
Y L W  
O R N  
B R N  
B L U  
10  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
N o .  
D I G I T D I G I T D I G I T  
C O N N E C T I O 1 N S T  
1
2 N D  
3 R D  
2
S W 1 4 S W C  
S W 1 1 S W 1 2  
0 1 9 7 6 8 5 4 3 1 2  
O F F  
O N  
S W 1  
2 3 0 V  
2 0 8 V  
S W 5  
5 4 3 1 2  
S W 4  
5 6 4  
O F F  
O N  
1 2 3 0 1 9 8 7 6 5 4 3 1 2  
O F F  
O N  
S W 2  
S W 3  
G R N  
Y L W  
O R N  
R E D  
B R N  
W H T  
Y L W  
O R N  
B L U  
R E D  
B R N  
11  
7 REFRIGERANT SYSTEM DIAGRAM  
PMFY-P06NBMU-E PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
Thermistor TH23  
Strainer (#100mesh)  
<Gas pipe temperature  
detection>  
Gas pipe  
Thermistor TH22  
<Liquid pipe temperature  
detection>  
Flare connection  
w1  
w2  
Liquid pipe  
Heat exchanger  
Linear expansion valve  
Strainer  
(#50mesh)  
Strainer  
(#100mesh)  
Strainer pipe (#100mesh)  
Thermistor TH21  
<Room temperature detection>  
Unit:in.(mm)  
Service Ref.  
PMFY-P06/ P08/ P12/ P15NBMU-E  
PMFY-P06/ P08/ P12/ P15NBMU-E1  
Item  
Gas pipe  
[1/2"(12.7)  
Liquid pipe  
[1/4"(6.35)  
Unit:mm  
PMFY-P12/ P15NBMU-E  
PMFY-P12/ P15NBMU-E1  
PMFY-P06/ P08NBMU-E  
PMFY-P06/ P08NBMU-E1  
Capillary tube w1  
O.D.[4.6 oI.D.[3.4 oR200 O.D.[3.6 oI.D.[2.4 oR200  
Capillary tube w2  
O.D.[3.6 oI.D.[2.4 oR80  
12  
8 MICROPROCESSOR CONTROL  
INDOOR UNIT CONTROL  
8-1. COOL OPERATION  
<How to operate>  
TIME SUN MON TUE WED THU FRI SAT  
1Press POWER ON/OFF button.  
TIMER  
AFTER  
Hr  
ON  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
WEEKLY  
SIMPLE  
AUTO OFF  
2Press the operation MODE button to display COOL.  
3Press the TEMP. button to set the desired temperature.  
NOTE: The set temperature changes 2°F when the  
pressed once. Cooling 67 to 87°F.  
˚F˚C  
ONLY1Hr.  
TEMP.  
ON/OFF  
or  
button is  
MENU  
ON/OFF  
DAY  
FILTER  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
Control modes  
Control details  
Remarks  
1-1. Functions regulated by temperature  
1. Functions regulated  
by temperature  
• Room temperature ]desired temperature + 2°F ···Thermo ON  
• Room temperature [desired temperature ···Thermo OFF  
1-2. Anti-freezing control  
Detected condition : When the liquid pipe temp. (TH22) is 32°F or less in 16  
minutes from compressors start up, anti-freezing control  
starts and the thermostat OFF.  
Released condition : The timer which prevents reactivating is set for 3 minutes,  
and anti-freezing control is cancelled when any one of the  
following conditions is satisfied.  
1 Liquid pipe temp. (TH22) turns to be 50°F or above.  
2 The condition of the thermostat OFF becomes  
complete by thermoregulating, etc.  
3 The operation mode becomes a mode other than COOL.  
4 The operation stops.  
1-3. Compressor time delay  
• 3 minutes minimum off cycle.  
By the remote controller setting (switch of 4 speeds)  
2. Fan  
Fan speed notch  
Type  
[Low], [Medium2], [Medium1], [High]  
4 speeds  
To be continued to the next page  
13  
From the preceding page  
Control modes  
Remarks  
Control details  
3. Drain pump  
3-1. Drain pump control  
• Always drain pump ON during the COOL and DRY mode operation.  
(Regardless of the thermostat ON/ OFF)  
• When the operation mode is changed from COOL or DRY to any other mode  
(including Stop), the drain pump continues to run for 3 minutes.  
Drain sensor function  
1  
Drain sensor  
Indoor controller  
board  
• The indoor circuit board energizes the drain sensor at a fixed voltage for a fixed  
duration. After energizing, the circuit board then compares the drain sensor’s  
temperature to the one before energizing, and judges whether the sensor is in  
the air or in the water.  
CN31  
1
2
3
Basic control system  
• While drain pump is turned on, it will repeat the following control system and judge  
whether the sensor is in the air or in the water.  
Timing of  
energizing  
drain sensor  
ON  
·······Repeat  
OFF  
Stand by for 30  
Stand by for 30  
sec.  
a minute sec. a minute  
Detect the  
temperature  
before  
energizing.  
(T0)  
Detect the  
temperature  
after  
energizing.  
(T1)  
Judge whether  
the sensor is in  
the air or in the  
water.  
•Drain sensor temperature rise (t)  
Temperature of drain sensor before current is applied (T0)  
Temperature of drain sensor after current is applied (T1)  
[ t = T1 T0 ]  
4. Vane  
(1)Initial setting : Start at COOL mode and horizontal vane.  
1  
"Only 1 Hr"  
appears on the  
wired remote  
controller.  
(2)Vane position : Horizontal Downward A Downward B Downward CSwing  
(up/ down vane change)  
(3)Restriction of the downward vane setting  
When setting the downward vane A, B or C in [Medium1], [Medium2] or [Low] of  
the fan speed notch, the vane changes to horizontal position after 1 hour has  
passed.  
14  
8-2. DRY OPERATION  
<How to operate>  
TIME SUN MON TUE WED THU FRI SAT  
1Press POWER ON/OFF button.  
TIMER  
AFTER  
Hr  
ON  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
WEEKLY  
SIMPLE  
AUTO OFF  
2Press the operation MODE button to display DRY.  
3Press the TEMP. button to set the desired temperature.  
NOTE: The set temperature changes 2°F when the  
pressed once. Dry 67 to 87°F.  
˚F˚C  
ONLY1Hr.  
TEMP.  
ON/OFF  
or  
button is  
MENU  
ON/OFF  
DAY  
FILTER  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
Control modes  
Remarks  
Control details  
1-1. Dry mode temperature is controlled by TH21.  
1. Functions regulated  
by temperature  
Dry mode ON Room temperature ] desired temperature + 2°F  
Dry mode OFF Room temperature [ desired temperature  
Dry mode Dry mode  
ON OFF  
time (min) time (min)  
3 min. passed since starting operation  
Room  
temperature  
Call  
Room temperature (Ta)  
Ta ] 83°F  
83°F > Ta ] 79°F  
79°F > Ta ] 75°F  
75°F > Ta  
9
7
5
3
3
3
ON  
3
3
Over 64°F  
OFF  
3
Unconditional  
Dry mode OFF  
10  
Less than 64°F  
1-2. Frozen prevention control  
No control function  
2. Fan  
Indoor fan operation control depends on the compressor conditions.  
Dry mode  
ON  
Fan speed notch  
[Low]  
Stop  
OFF  
Note: Remote controller setting is not acceptable.  
3. Drain pump  
Same control as COOL operation  
Same control as COOL operation  
4. Vane  
(up/ down vane change)  
15  
8-3. FAN OPERATION  
<How to operate>  
1Press POWER ON/OFF button.  
2Press the operation MODE button to display FAN.  
TIME SUN MON TUE WED THU FRI SAT  
TIMER  
AFTER  
Hr  
ON  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
˚F˚C  
WEEKLY  
SIMPLE  
AUTO OFF  
ONLY1Hr.  
TEMP.  
ON/OFF  
MENU  
ON/OFF  
DAY  
FILTER  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
Control modes  
1. Fan  
Remarks  
Control details  
Set by remote controller.  
Type  
Fan speed notch  
4 speeds type  
[Low], [Medium2], [Medium1], [High]  
2-1. Drain pump control  
2. Drain pump  
The drain pump turns ON for the specified amount of time when any of the  
following conditions is satisfied:  
1 ON for 3 minutes after the operation mode is switched from COOL or DRY to  
another operation mode (FAN).  
2 ON for 6 minutes after the drain sensor is determined to be submerged  
using the liquid level detection method given below.  
3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor  
room temperature [-18°F, AND the drain sensor input is at the short or  
open level.  
(If condition 2 or 3 is still being met after the drain pump has been turned ON  
for 6 minutes, the drain pump is kept ON for a further 6 minutes.)  
2-2. Liquid level detection method  
The liquid level is detected by determining whether or not the drain sensor is  
submerged, based on the amount the temperature rises after self-heating the  
sensor. This process is performed if any of the following conditions is satisfied:  
1 Drain pump is ON.  
2 Indoor piping (liquid piping) temperature – indoor room temperature [-18°F  
3 Indoor piping (liquid piping) temperature or indoor room temperature is at  
the short or open level temperature.  
4 Every 1 hour after the drain pump has been switched from ON to OFF.  
Same as the control performed during the COOL operation, but with no restriction  
on the vane's downward blow setting.  
3. Vane  
(up/ down vane change)  
16  
8-4. HEAT OPERATION  
<How to operate>  
1Press POWER ON/OFF button.  
2Press the operation MODE button to display HEAT.  
3Press the TEMP. button to set the desired temperature.  
NOTE: The set temperature changes 2°F when the  
pressed once. Heating 63 to 83°F.  
TIME SUN MON TUE WED THU FRI SAT  
TIMER  
AFTER  
Hr  
ON  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
WEEKLY  
SIMPLE  
AUTO OFF  
or  
button is  
˚F˚C  
ONLY1Hr.  
TEMP.  
ON/OFF  
<Display in HEAT operation>  
[DEFROST]  
The [DEFROST] symbol is only displayed during the defrost operation.  
[STANDBY]  
MENU  
ON/OFF  
DAY  
FILTER  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
The [STANDBY] symbol is only displayed during hot adjust mode.  
Control modes  
Remarks  
Control details  
1-1. Minimum compressor off cycle is 3 minutes.  
1. Functions  
regulated by  
temperature  
• Room temperature [ desired temperature -2°F ···Thermo ON  
• Room temperature ] desired temperature ···Thermo OFF  
Controlled by the remote controller (4-speed)  
Priority is given to below-mentioned control mode  
2-1. Stand by (hot adjust) mode  
2. Fan  
2-2. Preheating exclusion mode  
2-3. Thermo OFF mode (When the compressor off by the thermoregulating)  
2-4. Cool air prevention mode (Defrosting mode)  
2-1. Stand by (hot adjust) mode  
The fan controller becomes the stand by (hot adjust) mode for the following  
conditions.  
1 When starting the HEAT operation  
2 When the thermoregulating function changes from OFF to ON.  
3 When releasing the HEAT defrosting operation  
1  
Hot adjust mode 1  
"STAND BY"  
will be displayed  
during the stand  
by (hot adjust)  
mode.  
Set fan speed by the remote controller  
[Low]  
[Extra Low]  
A
B
C
A: Stand by (hot adjust) mode start  
B: 5 minutes have passed since the condition A or the indoor liquid pipe  
temperature turned 95°F or more  
C: 2 minutes have passed since the condition A  
(Terminating the stand by (hot adjust) mode)  
1  
2-2. Preheating exclusion mode  
This control is  
same for the  
model without  
auxiliary heater.  
When the condition changes the auxiliary heater ON to OFF  
(thermoregulating or operation stop, etc), the indoor fan operates in [Low] mode for  
1 minute.  
To be continued to the next page  
17  
From the preceding page  
Control modes  
Control details  
Remarks  
2-3. Thermo OFF mode  
2. Fan  
When the thermoregulating function changes to OFF, the indoor fan operates in  
[Extra low].  
2-4. Heat defrosting mode  
The indoor fan stops.  
3. Drain pump  
No drain pump operation  
However, when the control changes from COOL or DRY operation, the drain pump  
operates for 3 minutes.  
(1) Initial setting : OFF HEAT···[last setting]  
When changing the mode from exception of HEAT to HEAT  
operation ···[Downward C]  
4. Vane control  
(Up/ down vane  
change)  
(2) Vane position :  
Horizontal Downward A Downward B Downward CSwing  
(3) Restriction of vane position  
1 The vane is horizontally fixed for the following modes.  
(The control by the remote controller is temporarily invalidated and controlled by  
the unit.)  
• Thermo OFF  
• Stand by (hot adjust) [Extra low] mode  
• Heat defrost mode  
18  
8-5. AUTO OPERATION [AUTOMATIC COOL/HEAT CHANGE OVER OPERATION]  
<How to operate>  
1Press POWER ON/OFF button.  
TIME SUN MON TUE WED THU FRI SAT  
TIMER  
AFTER  
Hr  
ON  
2Press the operation MODE button to display AUTO.  
3Press the TEMP. button to set the desired temperature.  
NOTE: The set temperature changes 2°F when the  
pressed once. Automatic 67 to 83°F.  
AFTER OFF  
ERROR CODE  
˚F˚C  
FUNCTION  
FILTER  
WEEKLY  
SIMPLE  
AUTO OFF  
˚F˚C  
ONLY1Hr.  
or  
button is  
TEMP.  
ON/OFF  
When in AUTO mode, the unit will switch from either heat or cool  
automatically to maintain the set temperature.  
MENU  
ON/OFF  
DAY  
FILTER  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
Control modes  
Control details  
Remarks  
1. Initial value of  
operation mode  
HEAT mode for room temperature < Desired temperature  
COOL mode for room temperature ]Desired temperature  
2. Mode change  
(1) HEAT mode COOL mode  
Room temperature ]Desired temperature + 3°F or 3 minutes has passed  
(2) COOL mode HEAT mode  
Room temperature [Desired temperature - 3°F or 3 minutes has passed  
3. COOL mode  
4. HEAT mode  
Same control as cool operation  
Same control as heat operation  
8-6. WHEN UNIT IS STOPPED  
Control modes  
Control details  
Remarks  
1. Drain pump  
1-1. Drain pump control  
The drain pump turns ON for the specified amount of time when any of the  
following conditions is satisfied.  
(regardless of whether the compressor is ON or OFF)  
1 ON for 3 minutes after the operation mode is switched from COOL or DRY to  
another operation mode (HEAT mode).  
2 ON for 6 minutes after the drain sensor is determined to be submerged using the  
liquid level detection method given below.  
3 ON for 6 minutes after indoor piping (liquid piping) temperature – indoor room  
temperature [14°F, and the drain sensor input is at the short or open level.  
(If condition 2 or 3 is still being met after the drain pump has been turned ON for 6  
minutes, the drain pump is kept ON for a further 6 minutes.)  
1-2. Liquid level detection method  
The liquid level is detected by determining whether or not the drain sensor is  
submerged, based on the amount the temperature rises after self-heating the  
sensor.  
This process is performed if any of the following conditions is satisfied:  
1 Drain pump is ON.  
2 Indoor piping (liquid piping) temperature – indoor room temperature [14°F  
(except during defrosting)  
3 Indoor piping (liquid piping) temperature or indoor room temperature is at the  
short or open level temperature.  
4 Every 1 hour after the drain pump has been switched from ON to OFF.  
19  
9
TROUBLE SHOOTING  
9-1. HOW TO CHECK THE PARTS  
PMFY-P06NBMU-E PMFY-P08NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
PMFY-P15NBMU-E1  
Parts name  
Check points  
Thermistor (TH21)  
<Room temperature  
detection>  
Disconnect the connector then measure the resistance with a tester.  
(At the ambient temperature 50°F~86°F)  
Thermistor (TH22)  
<Liquid pipe temperature  
detection>  
Normal  
Abnormal  
Refer to the next page for the details.  
4.3k"~9.6k"  
Open or short  
Thermistor (TH23)  
<Gas pipe temperature  
detection>  
Measure the resistance between the terminals with a tester.  
(At the ambient temperature 68°F~86°F)  
Vane motor (MV)  
Yellow  
2
Connector  
Normal  
Abnormal  
MV  
Brown — Yellow  
Brown — Red  
Red  
4
Brown5  
380" i7%  
Open or short  
Brown — Orange  
Brown — Green  
1
Green  
3
Orange  
Linear expansion  
valve (LEV)  
4
Disconnect the connector then measure the resistance with a tester.  
Blue  
Normal  
Abnormal  
Open or short  
Brown  
M
6
Refer to the next  
page for the details.  
White-Red Yellow-Brown Orange-Red Blue-Brown  
Yellow  
2
150k" i10%  
1
5
3
Orange  
Red  
White  
Drain pump (DP)  
Measure the resistance between the terminals with a tester.  
(At the ambient temperature 68°F)  
Blue  
1
Normal  
Abnormal  
400"~480"  
Open or short  
2
Blue  
Drain sensor (DS)  
Measure the resistance after 3 minutes have passed since the power supply was turned off.  
(At the ambient temperature 32°F~140°F  
1
2
3
Normal  
Abnormal  
0.6k"~6.0k"  
Open or short  
Refer to the next page for the details.  
20  
<Thermistor characteristic graph>  
< Thermistor for lower temperature >  
50  
40  
30  
20  
Thermistor <Room temperature detection> (TH21)  
Thermistor <Liquid pipe temperature detection> (TH22)  
Thermistor <Gas pipe temperature detection> (TH23)  
Thermistor for  
lower temperature  
Thermistor R0=15k' ± 3%  
Fixed number of B=3480K ± 2%  
1
1
Rt=15exp { 3480(  
) }  
273+(t-32)/1.8  
273  
30_F 15.8k'  
10  
0
50_F  
70_F  
9.6k'  
6.0k'  
4.8k'  
3.9k'  
3.2k'  
80_F  
90_F  
-20  
0
20  
40  
60  
80  
100 120  
Temperature (°F)  
< Thermistor for drain sensor >  
100_F  
Thermistor for  
drain sensor  
10  
Drain sensor (DS)  
9
8
Thermistor R0=6.0k' ±5%  
Fixed number of B=3390K ±2%  
7
6
5
4
3
1
1
Rt=6exp { 3390(  
) }  
273+(t-32)/1.8  
273  
30_F 6.3k'  
50_F 3.9k'  
70_F 2.5k'  
80_F 2.0k'  
90_F 1.6k'  
100_F 1.3k'  
140_F 0.6k'  
2
1
0
80  
20 40 60  
100 120 140 170  
Temperature (°F)  
Linear expansion valve  
1 Operation summary of the linear expansion valve  
• Linear expansion valves open/close through the use of a stepping motor after receiving the pulse signal from the indoor  
controller board.  
• Valve position can be changed in proportion to the number of pulse signals.  
<Connection between the indoor controller board and the linear expansion valve>  
Controller board  
DC12V  
6
5
Brown  
Red  
Linear expansion valve  
Blue  
4
Drive circuit  
[4  
[4  
4
3
Blue  
Brown  
Yellow  
M
5
6
2
[3  
[3  
Orange  
[2  
1
[2  
2
1
Yellow  
White  
3
Red  
White  
Orange  
[1  
[1  
Connector (CN60)  
Note : Since the number of the connector at the controller board side and the relay connector are different, follow the color of  
the lead wire.  
21  
<Output pulse signal and the valve operation>  
Output  
Output  
(Phase)  
Closing a valve : 1 2 3 4 1  
Opening a valve : 4 3 2 1 4  
1
2
3
4
ON  
ON  
OFF  
OFF OFF  
ON  
{1  
{2  
{3  
{4  
The output pulse shifts in above order.  
ON  
ON  
OFF OFF  
• When linear expansion valve operation stops, all output phase  
become OFF.  
ON  
ON  
OFF  
ON  
OFF OFF  
• At phase interruption or when phase does not shift in order, motor  
does not rotate smoothly and motor will lock and vibrate.  
2Linear expansion valve operation  
C
D
• When the switch is turned on, 2200 pulse closing valve signal will be  
send till it goes to point A in order to define the valve position.  
• When the valve moves smoothly, there is no sound or vibration  
occurring from the linear expansion valves : however, when the  
pulse number moves from E to A or when the valve is locked, more  
sound can be heard than in a normal situation.  
Close  
• Sound can be detected by placing the ear against the screw driver  
handle while putting the screw driver tip to the linear expansion  
valve.  
Open  
2000 pulse  
Opening a valve  
all the way  
A
E
Pulse number  
B
Extra tightening (80~100pulse)  
3Trouble shooting  
Countermeasures  
Check points  
Symptom  
Operation circuit fail- Disconnect the connector on the controller board, then con- Exchange the indoor con-  
6
5
4
3
2
1
ure of the micro  
processor  
nect LED for checking.  
troller board at drive circuit  
failure.  
1k" LED  
When power is turned on, pulse signals will send for 10  
seconds. If the LED does not light or keeps lighting even  
after the signals stop, that means some failures in the  
operation circuit.  
Linear expansion  
Motor will idle and make a ticking noise when the motor is  
Exchange the linear  
expansion valve.  
valve mechanism is operated while the linear expansion valve is locked. This  
locked. ticking sound is the sign of the abnormality.  
Short or breakage of Measure the resistance between each coil (white-red, yellow- Exchange the linear  
the motor coil of the brown, orange-red, blue-brown) with a tester. It is normal if expansion valve.  
linear expansion  
valve  
the resistance is in the range of 150±10%.  
Valve doesn't close To check the linear expansion valve, operate the indoor unit If large amount of refriger-  
completely. in fan mode and at the same time operate other indoor units ant is leaked, exchange  
in cooling mode, then check the pipe temperature <liquid  
pipe temperature> of the indoor unit by the  
outdoor multi controller board operation  
the linear expansion valve.  
monitor. During fan operation, linear  
expansion valve is closed completely and if  
Thermistor  
there is any leaking, detecting temperature  
of the thermistor will go lower. If the detect-  
ed temperature is much lower than the tem-  
perature indicated in the remote controller,  
(Liquid pipe)  
Linear  
expansion  
valve  
it means the valve is not closed all the way. It is not neces-  
sary to exchange the linear expansion valve, if the leakage is  
small and not affecting normal operation.  
Wrong connection of Check the color of lead wire and missing terminal of the con- Disconnect the connector  
the connector or  
contact failure  
nector.  
at the controller board,  
then check the continuity.  
22  
9-2. TROUBLESHOOTING  
Check method of indoor fan motor (fan motor / controller board)  
Notes  
1
· High voltage is applied to the connecter (FAN) for the fan motor. Give attention to the service.  
· Do not pull out the connector (FAN) for the motor with the power supply on, doing so may result in damage to the board.  
Self check  
2
Conditions : The indoor fan does not rotate.  
Turn OFF the power supply.  
Wiring contact check  
Contact of fan motor connector (FAN)  
Contact of power supply cable.  
No  
Correct wiring connection.  
Was contact good?  
Yes  
Fan motor check  
Measure the resistance between the fan motor connecter 1(+) and 3(–).  
(With the connector pulled out from the board)  
No  
Replace the fan motor.  
Is the resistance 1M" or more?  
Yes  
Turn ON the power supply.  
Power supply check  
Check the voltage of the indoor controller board with the connector (FAN) connected to the board.  
Approx. 294~325V DC between the connecter (FAN) (+) and (–)  
1
3
No  
Indoor controller board fuse check  
Turn off the power supply and check if there is  
any broken wire by using a tester.  
Is the voltage normal?  
Yes  
No  
Is the fuse normal?  
Replace the fuse.  
Yes  
Replace the indoor controller board.  
Fan motor position sensor signal check  
Rotate the fan motor more than one turn slowly and check the voltage between  
the connector (FAN) (+) and (–) with the connector (FAN) connected to the board.  
6
3
No  
Does the voltage repeat 0V DC and 15V DC ?  
Yes  
Replace the fan motor.  
Replace the indoor controller board.  
23  
9-3. FUNCTION OF DIP SWITCH  
Operation by switch  
Effective  
timing  
Switch Pole  
Function  
Remarks  
ON  
OFF  
Thermistor <Room temperature  
detection> position  
1
2
3
4
Built-in remote controller Indoor unit  
Address board  
<Initial setting>  
Filter clogging detection  
Filter cleaning sign  
Fresh air intake  
Provided  
2,500h  
Not provided  
100h  
ON  
OFF  
1
2 3 4 5 6 7  
8
9
10  
Effective  
Not effective  
Switching remote  
controller display  
Indicating if the  
thermo is ON  
Indicating fan operation  
ON/OFF  
Thermo ON operation at  
Heating mode  
SW1  
5
Under  
suspension  
Function  
6
Humidifier control  
Air flow at  
Fan operation at Heating mode  
Low w  
setting  
w
SW 1-7 SW 1-8 SW 1-8  
7
8
Extra low w  
OFF  
ON  
OFF Extra low  
OFF Low  
Heat thermo OFF  
Auto restart function  
Power ON/OFF by breaker  
Depends on SW1-7  
Not effective  
Setting air flow  
Effective  
OFF  
ON  
ON  
ON  
Setting air flow  
stop  
9
10  
Not effective  
Effective  
Indoor controller board  
MODELS  
ON  
SW 2  
MODELS  
SW 2  
ON  
OFF  
Before  
power  
supply  
ON  
PMFY-P06NBMU-E  
OFF  
PMFY-P12NBMU-E  
SW2  
1
1
2 3 4 5 6  
1
1
2 3 4 5 6  
Capacity  
code  
<Initial setting>  
1~6  
ON  
ON  
OFF  
Set for each capacity.  
setting  
PMFY-P08NBMU-E  
OFF  
PMFY-P15NBMU-E  
2 3 4 5 6  
2 3 4 5 6  
Heat pump / Cool only  
Louver  
Cooling only  
Available  
Heat pump  
Not available  
Not available  
Not available  
First setting  
Down B, C  
Not effective  
Effective  
1
2
3
4
5
6
Indoor controller board  
<Initial setting>  
Vane  
Available  
ON  
Vane swing function  
Vane horizontal angle  
Available  
OFF  
1
2 3 4 5 6 7  
8
9
10  
Second setting w6  
(
w4 ) At cooling mode, each  
angle can be used only  
1 hour.  
Vane cooling limit angle setting w4 Horizontal angle  
Changing the opening of linear  
SW3  
7
expansion valve when the  
Effective  
thermostat is OFF  
( w5 ) SW 3-9 setting  
Function  
setting  
PMFY-P06, P08NBMU-E=ON  
PMFY-P12, P15NBMU-E=OFF  
SW 3-10 setting  
Heating 4deg. up  
Not effective  
8
9
Under  
suspension  
Target superheat setting w5  
Target sub cool setting w5  
PMFY-P06, P08NBMU-E=ON  
PMFY-P12, P15NBMU-E=OFF  
10  
Do not use SW3-9, 10 as trouble  
might be caused by the usage  
condition.  
w6 Second setting  
means first setting.  
In case replacing the indoor controller board, make sure to set the switch to the  
initial setting, which is shown below.  
Indoor controller board  
SW4  
Model  
Selection  
(Setting  
for  
PMFY  
series)  
Before  
power  
supply  
ON  
PMFY-P·NBMU-E  
PMFY-P·NBMU-E1  
1~5  
ON  
ON  
OFF  
OFF  
1 2 3 4 5  
1 2 3 4 5  
24  
Effective  
timing  
Switch Pole  
Operation by switch  
Remarks  
SW11  
1st digit  
address  
setting  
Address board  
SW12 SW11  
<Initial setting>  
SW12 SW11  
0
0
Address setting should be done when M-NET  
remote controller is being used.  
5
5
0
0
SW12  
2nd digit  
address  
setting  
10  
1
5
5
Address board  
<Initial setting>  
SW14  
Before  
power  
supply  
ON  
SW14  
Connection  
No.  
This is the switch to be used when the indoor  
unit is operated with R2 series outdoor unit  
as a set.  
0
SW14  
0
8
setting  
8
Address board  
<Initial setting>  
220V  
(208V)  
240V  
(230V)  
If the unit is used at the 230V area,  
set the voltage to 230V.  
If the unit is used at the 208V, set the voltage  
to 208V.  
SW5  
Voltage  
Selection  
220V  
240V  
(230V)  
2
(208V)  
25  
9-4. TEST POINT DIAGRAM  
PMFY-P06NBMU-E PMFY-P08NBMU-E  
PMFY-P12NBMU-E PMFY-P15NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
CN32  
Connector  
(Remote switch)  
SW2  
SW3  
SW4  
Model selection  
Capacity setting Function setting  
CN27  
Connector  
(Damper)  
CNP  
CN25  
Drain pump output  
(DP)  
Between 1 to 3  
208-230V AC  
Connecter  
(Humidifier)  
CND  
Connect to the  
terminal block (TB2)  
(Power supply for  
indoor controller  
board connecting  
wire)  
CN6V  
Vane motor output  
(MV)  
Between 1 to 3  
208-230V AC  
CN52  
Remote indication  
FUSE  
6.3A 250V  
CN51  
Centrally control  
FAN  
Fan motor output  
(MF)  
CN41  
HA terminal-A  
CN60  
Linear expansion  
valve output (LEV)  
CN20  
Room temperature  
thermistor (TH21)  
CN21  
Pipe temperature  
thermistor/Liquid  
(TH22)  
CN29  
Pipe temperature  
thermistor/Gas  
(TH23)  
LED1  
Power supply (I.B)  
(Indoor unit :  
208-230V)  
CN31  
Drain sensor (DS)  
LED2  
CN3A  
CN2M  
Power supply (R.B)  
Connect to the terminal block (TB15)  
(MA-Remote controller connecting wire)  
Between 1 to 38.7-13V DC (Pin1(+))  
Connect to the terminal block (TB5)  
(M-NET transmission connecting wire)  
24-30V DC (non-polar)  
26  
10 DISASSEMBLY PROCEDURE  
PMFY-P06NBMU-E  
PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
Be careful when removing heavy parts.  
OPERATING PROCEDURE  
PHOTOS&ILLUSTRATIONS  
Photo 1  
1. Removing the intake grille  
Opening the air intake grille  
(1) Press the PUSH of the air intake grille.(See figure 1)  
(2) Put your fingers on both ends of the air intake grille and let  
it down after the grille clicks.  
Removing the air intake grille  
(1) Press the PUSH of air intake grille, and pull down both  
ends with your fingers after the grille clicks.  
(See figure 1)  
(2) Pull out the handle of air intake grille toward you.  
(See figure 2)  
(3) Unhook the string, which secures air intake grille.  
(See figure 3)  
Air filter  
Figure 1  
Figure 2  
Figure 3  
27  
OPERATING PROCEDURE  
PHOTOS&ILLUSTRATIONS  
Claw in middle  
of nozzle  
Photo 2  
2. Removing the electrical parts box  
Nozzle  
Electrical parts  
(1) Remove the panel.  
(2) Remove the address board cover.  
(3) Remove the electrical parts cover.  
(4) Disconnect the connectors of  
fan motor, vane motor,  
drain pump, room temperature thermistor,  
pipe temperature thermistor,  
condenser/evaporator temperature thermistor,  
and drain sensor on the electrical controller board.  
(5) Disconnect the lead wire and earth wire from terminal  
block.  
Drain pan  
Electrical parts  
cover  
Photo 3  
(6)Remove the electrical parts box.  
Address board  
cover  
3. Removing the nozzle  
Photo 4  
Note when the nozzle is removed.  
Heat exchanger  
Nozzle  
· The insulation material (white) which prevents water  
drop is mounted to the side of vane motor. Remove the  
insulation material before removing nozzle.  
(See figure 4)  
·After completing the service, re-mount the insulation  
material as before as shown in right figure.  
·After service, mount the double layer insulation  
without fail.  
Vane motor  
The hard material side should be faced toward the  
nozzle. (See figure 4)  
Room temperature thermistor  
Insulation material  
(1) Remove the panel.  
(2) Remove the room temperature thermistor.  
(3) Unhook the claws in the middle of nozzle and remove the  
drain pan. (5 screws) (See photo 2)  
Figure 4  
Hard side of insulation  
Soft side of insulation  
(4) Remove the nozzle side of the heat exchanger.(2 screws)  
(5) Remove the address board cover.  
(6) Remove the electrical parts cover.  
(7) Disconnect the connector of vane motor.  
(8) Remove the insulation material (white) on the right side of  
nozzle.  
Nozzle  
(9)Remove the nozzle. (6 screws)  
Vane motor  
Photo 5  
4. Removing the vane motor  
(1) Remove the nozzle. Refer to above-mentioned 3  
Removing the nozzle.  
Vane motor  
(2) Remove the vane motor.  
28  
OPERATING PROCEDURE  
PHOTOS&ILLUSTRATIONS  
Photo 6  
Drain sensor  
Drain pump  
5. Removing the drain pump  
(1) Remove the panel.  
(2) Unhook the claw in the middle of nozzle and remove the  
drain pan.  
(3) Remove the address board cover.  
(4) Remove the electrical parts cover.  
(5) Disconnect the connector of drain pump.  
(6) Remove the drain hose.  
(7) Remove the drain pump.(2 screws)  
Fan motor  
Photo 7  
6. Removing the fan motor and line flow fan  
(1) Remove the panel.  
(2) Unhook the claw in the middle of nozzle and remove the  
drain pan.  
(3) Unscrew 2 screws at the nozzle side of the heat exchanger.  
(4) Remove the address board cover.  
(5) Remove the electrical parts cover.  
(6) Disconnect the connector of vane motor, fan motor and  
drain pump.  
(7) Remove the nozzle side of the heat exchanger.(2 screws)  
(8) Remove the nozzle.  
(9) Remove the drain pump.  
(10) Unscrew 2 screws in the motor support.  
(11) Remove the fan motor and line flow fan. (The fan motor  
and line flow fan can be removed without removing the  
heat exchanger.)  
Fan motor  
Line flow fan  
7. Removing the thermistor<Room temperature detection>  
(1) Remove the panel.  
(2) Remove the address board cover.  
(3) Remove the electrical parts cover.  
(4) Remove the thermistor. <intake temperature detector>  
(5) Disconnect the lead wire from the cord clamp. (5 points)  
(6) Disconnect the connector (CN20) on the indoor controller  
board.  
8. Removing the thermistor  
<Liquid pipe temperature detection>  
<Gas pipe temperature detection>  
(1) Remove the panel.  
(2) Remove the address board cover.  
(3) Remove the electrical parts cover.  
(4) Remove the drain pan.  
(5) Remove the thermistor <Gas pipe temperature detection>  
/<Liquid pipe temperature detection>.  
(6) Disconnect the lead wire from the cord clamp.  
(7) Disconnect the connector (CN21)/(CN29) on the indoor  
controller board.  
29  
11  
PARTS LIST (non-RoHS compliant)  
PANEL PARTS FOR  
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E  
PMP-16BMU  
10  
10  
11  
2
3
4
1
2
3
4
5
9
8
6
7
Q'ty/set  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
Part No.  
No.  
Part Name  
Specification  
Symbol  
Q'ty  
PMP-16BMU  
1
2
AIR OUTLET GRILLE  
LATCH  
1
2
2
2
1
1
1
2
1
2
1
T7W E11 003  
R01 E00 055  
R01 E00 099  
3
PANEL HOOK  
4
R01 E01 054 GRILLE CATCH  
R01 E01 500 L.L.FILTER  
5
6
R01 E02 500 L.L.FILTER  
7
TW7 E01 691 INTAKE GRILLE  
R01 E00 054 GRILLE CATCH  
R01 E00 648 RECEIVER COVER  
8
9
10  
11  
R01 E00 044  
R01 E00 096  
MAGNET  
SCREW CAP  
30  
FUNCTIONAL PARTS  
PMFY-P06NBMU-E  
PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
22  
21  
20  
17  
1
2
3
19  
16  
15  
18  
14  
4
5
13  
12  
6
11  
10  
7
8
9
0
Part number that is circled is not shown in the figure.  
Q'ty/set  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
No.  
Part No.  
Part Name  
Specification  
PMFY-P · NBMU-E  
Symbol  
Q'ty  
06/ 08 12/ 15  
1 R01 22A 102 BEARING MOUNT  
2 R01 005 103 SLEEVE BEARING  
3 R01 E02 114 LINE FLOW FAN  
4 R01 E00 079 STABILIZER ASSY  
5 R01 E00 092 VANE SLEEVE  
1
1
1
1
1
1
1
1
1
1
1
T7W K08 480 HEAT EXCHANGER  
6
T7W K09 480 HEAT EXCHANGER  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7 R01 E10 529 DRAIN PAN ASSY  
8 R01 E00 202 THERMISTOR  
9 R01 E00 038 GUIDE VANE  
10 R01 E01 202 THERMISTOR  
11 R01 E03 202 THERMISTOR  
12 R01 E66 401 LINEAR EXPANSION VALVE  
13 R01 E01 002 VANE  
14 R01 E01 223 VANE MOTOR  
15 R01 E00 110 CASING ASSY  
16 R01 31K 241 SENSOR HOLDER  
17 R01 E01 266 DRAIN SENSOR  
18 T7W E07 355 DRAIN PUMP  
19 R01 E00 130 MOTOR SUPPORT  
20 R01 E14 220 FAN MOTOR  
21 R01 E07 105 RUBBER MOUNT  
22 R01 E00 527 DRAIN PIPE ASSY  
23 R01 E01 673 SCREW ASSY  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TH21  
ROOM  
TH22  
TH23  
LEV  
LIQUID  
GAS  
MV  
DS  
DP  
MF  
31  
ELECTRICAL PARTS  
PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E  
6
N
F A  
1
2
3
4
5
Q'ty/set  
PMFY-P  
06/08/12/15  
NBMU-E  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
No.  
Part No.  
Part Name  
Specification  
Symbol  
Q'ty  
TB2  
TB5  
TB15  
A.B  
3P (L1,L2,G)  
3P (M1,M2,S)  
2P(1,2)  
T7W E11 716  
T7W E17 716  
R01 556 246  
T7W E00 294  
R01 E00 304  
T7W E43 310  
1
2
3
4
5
6
1
1
1
1
1
1
TERMINAL BLOCK  
TERMINAL BLOCK  
TERMINAL BLOCK  
ADDRESS BOARD  
CABLE ASSY  
I.B  
with POWER BOARD  
INDOOR CONTROLLER BOARD  
32  
12  
RoHS PARTS LIST  
PANEL PARTS FOR  
PMFY-P06NBMU-E PMFY-P08NBMU-E  
PMFY-P06NBMU-E1 PMFY-P08NBMU-E1  
PMP-16BMU  
PMFY-P12NBMU-E PMFY-P15NBMU-E  
PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
11  
10  
2
10  
1
2
3
4
3
4
5
9
8
6
7
Q'ty/set  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
No.  
Part No.  
Part Name  
Specification  
Symbol  
Q'ty  
PMP-16BMU  
1
2
3
4
5
6
7
8
9
G
G
G
G
G
G
G
G
G
AIR OUTLET GRILLE  
LATCH  
1
2
2
2
1
1
1
2
1
2
1
T7W E16 003  
R01 E01 055  
R01 E01 099  
PANEL HOOK  
R01 E07 054 GRILLE CATCH  
R01 E14 500 L.L.FILTER  
R01 E15 500 L.L.FILTER  
T7W E04 691 INTAKE GRILLE  
R01 E06 054 GRILLE CATCH  
R01 E01 648 RECEIVER COVER  
10 G  
11 G  
R01 E01 044  
R01 E04 096  
MAGNET  
SCREW CAP  
33  
22  
FUNCTIONAL PARTS  
PMFY-P06NBMU-E  
PMFY-P08NBMU-E  
PMFY-P12NBMU-E  
PMFY-P15NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E1  
PMFY-P12NBMU-E1  
PMFY-P15NBMU-E1  
21  
20  
17  
1
2
19  
16  
18  
15  
14  
13  
3
4
5
6
12  
11  
10  
7
8
9
Part number that is circled is not shown in the figure.  
Q'ty/set  
PMFY-  
P·NBMU-E P·NBMU-E1  
06/08 12/15 06/08 12/15  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
No.  
Part No.  
Part Name  
Specification  
Symbol  
Q'ty  
1
2
3
4
5
G R01 23A 102 BEARING MOUNT  
G R01 E04 103 SLEEVE BEARING  
G R01 E32 114 LINE FLOW FAN  
G R01 E01 079 STABILIZER ASSY  
G R01 E02 092 VANE SLEEVE  
G T7W H08 480 HEAT EXCHANGER  
G T7W H09 480 HEAT EXCHANGER  
G R01 E30 529 DRAIN PAN ASSY  
G R01 H12 202 THERMISTOR  
G R01 E03 038 GUIDE VANE  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7
8
9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TH21  
ROOM  
10 G R01 H16 202 THERMISTOR  
11 G R01 H17 202 THERMISTOR  
12 G R01 H06 401 LINEAR EXPANSION VALVE  
13 G R01 E16 002 VANE  
TH22  
TH23  
LEV  
LIQUID  
GAS  
14 G R01 E18 223 VANE MOTOR  
15 G R01 E05 110 CASING ASSY  
16 G R01 32K 241 SENSOR HOLDER  
17 G R01 E11 266 DRAIN SENSOR  
18 G T7W E11 355 DRAIN PUMP  
19 G R01 E35 130 MOTOR SUPPORT  
MV  
DS  
DP  
G R01 E24 220 FAN MOTOR  
20  
MF  
MF  
G R01 E45 220 FAN MOTOR  
1
1
1
1
1
1
1
1
21 G R01 E13 105 RUBBER MOUNT  
22 G R01 E05 527 DRAIN PIPE ASSY  
23  
1
1
1
1
1
1
G R01 E03 673 SCREW ASSY  
34  
ELECTRICAL PARTS  
PMFY-P06NBMU-E  
PMFY-P06NBMU-E1  
PMFY-P08NBMU-E PMFY-P12NBMU-E  
PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1  
PMFY-P15NBMU-E  
7
6
N
F A  
1
2
3
4
5
Q'ty/set  
Wiring Recom-  
Diagram mended  
Remarks  
(Drawing No.)  
PMFY-P06/08/12/15  
NBMU-E NBMU-E1  
No.  
Part No.  
Part Name  
Specification  
Symbol  
Q'ty  
3P (L1,L2,G)  
3P (M1,M2,S)  
2P(1,2)  
T7W E41 716  
R01 E27 246  
R01 E21 246  
T7W E01 294  
R01 E07 304  
T7W 420 239  
T7W E59 310  
T7W E67 310  
TB2  
TB5  
TB15  
A.B  
1
2
3
4
5
6
G
G
G
G
G
G
G
G
1
1
1
1
1
1
1
1
1
1
1
1
1
TERMINAL BLOCK  
TERMINAL BLOCK  
TERMINAL BLOCK  
ADDRESS BOARD  
CABLE ASSY  
250V, 6A  
FUSE  
I.B  
FUSE  
INDOOR CONTROLLER BOARD  
INDOOR CONTROLLER BOARD  
7
1
I.B  
35  
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN  
cCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.  
Distributed in Jul. 2007. No. OC341 REVISED EDITION-B PDF 9  
Distributed in Aug. 2006. No. OC341 REVISED EDITION-A PDF 9  
Distributed in Jun. 2005. No. OC341 PDF 10  
Made in Japan  
New publication, effective Jul. 2007  
Specifications subject to change without notice  

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