Mitsubishi Electric PKA-A12LA1 Service Manual page 24

9-7. TEST POINT DIAGRAM
Indoor controller board
CN2L
Connector
(LOSSNAY)
LED1: Power
supply (I.B)
CN105
IT Terminal
CN4F
Float switch (FS)
(option)
CN41
Connector
(HA terminal-A)
SWE
Emergency
operation connector
CN51
Centrally control
CN32
Remote switch
LED3: Transmission
(Indoor/Outdoor)
SW1
Model selection
SW2
Capacity setting
Jumper wire J41,J42
Pair No. setting for
wireless remote controller
TCH117
CNP Drain pump output
1–3: 13 VDC
(option)
LED2: Power CNV
supply (Wired Vane motor
remote controller) (MV1, MV2)
12 VDC pulse outlet
CN20
Room temp.
thermistor (TH1)
24
CNMF
Connect to the
fan motor (MF)
1–4 : 294-325 VDC
5–4 : 15 V DC
6–4 : 0–6.5 VDC
7–4 : 0 or 15 VDC
CN01
Connect to the
Terminal block (TB4)
1–3 : 208/230 V AC
FUSE
(3.15 A 250 V)
CN3C
Transmission
(Indoor/outdoor)
(0–28 VDC)
CN44
Pipe temperature
thermistor
1–2 : Liquid (TH2)
3–4 : Condenser/
Evaporator(TH5)
CN90
Connect to the remote
operation adapter
CN22
Connect to the terminal
block (TB5) (Remote
controller connecting
wire) (option)
CNRU
Connect to SWITCH BOARD
(S.B), LED BOARD (L.B) and
PCB for WIRELESS REMOTE
CONTROLLER (option)