Trane Mitsubishi Electric CITY MULTI Series Technical & Service Manual page 38

9-3. TEST POINT DIAGRAM
9-3-1. Indoor controller board
CND
Power supply for indoor controller board
3–5: 208–230 VAC
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)
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 VDC pulse
TB5
M-NET transmission connecting wire
24–30 VDC (non-polar)
Note: The voltage range of 12 VDC in this page is between 11.5 to 13.7 VDC.
OCHT746A
38
CNMF
Connect to the
fan motor (MF)
1–4: 310–340 VDC
5–4: 15 VDC
6–4: 0–6 VDC
7–4: 0 or 15 VDC (Stop)
7.5 VDC (Operation)
(12 VDC pulse)
CN24
External heater
12 VDC (1: +)
CNP
Drain pump output (DP)
1–3: 12 VDC
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 VDC pulse output
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: +)
CN52
Remote indicator
1–2: Status lamp 12 VDC (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: +)
CN60
Linear expansion valve (LEV) out-
put 12 VDC pulse output
TB15
MA-Remote controller connecting wire
1–2: 8.7–13 VDC (non-polar)