Test Point Diagram; Indoor Controller Board - Mitsubishi Electric City Multi Series Technical & Service Manual

9-3. TEST POINT DIAGRAM

9-3-1. Indoor controller board

PLFY-EP06NEMU-E
PLFY-EP18NEMU-E
PLFY-EP36NEMU-E
CND
Power supply for indoor controller board
3–5: 208–230 V AC
FUSE
6.3 A, 250 V
LED1
Main power supply
(Indoor unit: 208–230 V)
CN90
Connect to the wireless
remote controller board
(W.B)
CN105
IT Terminal
SWE
Test run (Drain pump and indoor fan motor )
CN4Z
i-see Sensor (sensor)
SW4
Model selection
SW3
Function setting
SW2
Capacity setting
SW1
Function setting
SW22
Pair No. setting for wireless remote
controller
CN32
Remote switch
LED2
Power supply for
MA-Remote controller
SW11
Address setting 1s digit
SW12
Address setting 10s digit
SW14
Branch No.
SW21
Ceiling height and discharge outlet
number selector
CNV
Vane motor output
12 V DC pulse
TB5
M-NET transmission connecting wire
24–30 V DC (non-polar)
Note: The voltage range of 12 V DC in this page is between 11.5 to 13.7 V DC.
OCH610G
PLFY-EP08NEMU-E
PLFY-EP18NEMU-E1
PLFY-EP48NEMU-E
PLFY-EP12NEMU-E
PLFY-EP24NEMU-E
38
PLFY-EP15NEMU-E
PLFY-EP30NEMU-E
CNMF
Connect to the
fan motor (MF)
1–4: 310–340 V DC
5–4: 15 V DC
6–4: 0–6 V DC
7–4: 0 or 15 V DC (Stop)
7.5 V DC (Operation)
(12 V DC pulse)
CN27
Damper signal output
12 V DC (1: +)
CNP
Drain pump output (DP)
1–3: 12 V DC
CN24
External heater
12 V DC (1 : +)
CN4F
Drain float switch (FS)
CN20
Room temperature
thermistor (TH21)
CN44
Pipe temperature thermistor
1–2: Liquid (TH22)
3–4: Gas (TH23)
CN5Y
i-see Sensor motor output (MT)
12 V DC pulse output
CN51
Centrally control
1–2 : Control signal
12 V DC pulse input (1 : +)
3–4 : Operation indicator
12 V DC (3 : +)
3–5 : Malfunction indicator
12 V DC (3 : +)
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 V DC (1 : +)
1–4: Heating status lamp
12 V DC (1 : +)
CN60
Linear expansion valve (LEV) out-
put 12 V DC pulse output
TB15
MA-Remote controller connecting wire
1–2: 8.7–13 V DC (non-polar)