Mitsubishi Electric CITY MULTI PLFY Series Technical & Service Manual page 24

9-3. TEST POINT DIAGRAM
Indoor controller board
CN2A
MA-Remote controller
8.7-13 VDC (non-polar)
– :
LED2
Power supply
(Wired remote controller)
CN52
Remote indicator
– : Status lamp
12 VDC ( : +)
– : Cooling/Dry status lamp
12 VDC ( : +)
– : Heating status lamp
12 VDC ( : +)
CN8A
Flow control valve
CN51
Centrally control
– : Control signal
12 VDC pulse input ( : +)
– : Operation indicator
12 VDC ( : +)
– : Malfunction indicator
12 VDC ( : +)
CN44
Pipe temperature thermistor
– : Inlet (TH22)
– : Outlet (TH23)
CNSA
Pressure sensor (inlet water)
CNSB
Pressure sensor (outlet water)
CN20
Room temperature thermistor (TH21)
CN4F
Drain float switch (FS)
CNP
Drain pump (DP)
– : 12 VDC
CN24
EXTERNAL HEATER
CNMF
Fan motor (MF)
– : 294-325 VDC
– : 15 VDC
Note: The voltage range of 12 VDC in this page is between 11.5 to 13.7 VDC.
TCH123
CN3M
M-NET transmission connecting wire
24-30 VDC (non polar)
24
CNV
Vane motor (MV)
12 V pulse output
SW21
Number of air outlets and height
of the ceiling
SW14
Branch No.
SW12
Address setting 10s digit
SW11
Address setting 1s digit
CN32
Remote switch
SW22
Pair No.setting for wireless
remote controller
SW1
Function setting
SW2
Capacity setting
SW3
Function setting
CN4Z
i-see Sensor (Sensor)
SWE
Jumper switch
(Emergency operation)
CN90
Connect to the wireless
remote controller board (CNB)
Main power supply
(Indoor unit: 208/230 V)
F1
FUSE
(6.3 A/250 V)
CND
Power supply for indoor
controller board
208/230 VAC
– :