Mitsubishi Electric PKFY-WL04NLMU-E.TH Technical & Service Manual page 25

9-3. TEST POINT DIAGRAM
9-3-1. Indoor controller board
PKFY-WL04NLMU-E.TH
PKFY-WL12NLMU-E.TH
CN2M
M-NET transmission connecting wire
24 − 30 VDC (non-polar)
CN8A
Linear expansion valve(LEV)
12 VDC pulse output
(OPTION)
CN52
Remote indicator
1-2: Status lamp 12 V DC (1 : +)
Fan motor output (SW1-5 OFF)
Thermostat ON (SW1-5 ON)
1-3: Cooling/Dry status lamp
12 VDC (1 : +)
1-4: Heating status lamp
12 VDC (1 : +)
CN51
Centrally control
1-2 : Control signal
12 VDC pulse input (1 : +)
3-4 : Operation indicator
12 VDC (3 : +)
3-5 : Malfunction indicator
12 VDC (3 : +)
LED2
Power supply for
MA-Remote controller
CN4F
Drain float switch (FS) :
(OPTION)
CN32
Remote switch
CN2A
MA-Remote controller
connecting wire
1-2 : 8.7 − 13 VDC (non-polar)
CNRU
Connect to SWITCH BOARD
(S.B),LED BOARD (L.B)
and PCB FOR WIRELESS
REMOTE CONTRILLER (W.B)
CNP
Drain pump (DP) : (OPTION)
1-3 : 12 VDC
CND
Power supply for indoor
controller board
3-5 : 220 − 240 VAC
F1
Fuse
T3.15AL250V
Note: The voltage range of 12 VDC in this page is between 11.5 to 13.7 VDC.
TCH122
(I.B)
PKFY-WL06NLMU-E.TH
PKFY-WL15NLMU-E.TH
CN105
CNV
IT Terminal
Vane motor (MV)
12 VDC pulse output
25
PKFY-WL08NLMU-E.TH
LED1
Main power supply
(Indoor unit : 208 − 230V)
CN44
Pipe temperature thermistor
1-2 : Liquid (TH22)
3-4 : Gas (TH23)
5-6 : Gas (TH24)
CNAD
Connect to ADDRESS BOARD (A.B)
SWE
Test run (Drain pump and
indoor fan motor)
SW3
Function setting
SW2
Capacity setting
SW22
Pair No. setting for wireless
remote controller
CN20
Room temperature
thermistor (TH21)
CNSA
Pressure sensor
(inner water)
(OPTION)
CNSB
Pressure sensor
(outlet water)
(OPTION)
CNMF
Connect to the Fan motor (MF)
1-4 : 295 − 325 VDC
5-4 : 15 VDC
6-4 : 0 VDC (FAN stop)
1 − 6.5 VDC (FAN operation)