Mitsubishi Electric PCA-A24KA4 Service Manual page 26

9-7. TEST POINT DIAGRAM
Indoor controller board
PCA-A24KA4 PCA-A30KA4
CN90
Connect to the IR wireless
remote controller board (CNB)
CN4Y
i-see sensor (option)
CN6Y
sensor motor (option)
CN105
RFI
(Radio frequency interface)
LED2
Power supply (R.B)
CN4F
Drain float switch (FS)
(option)
CN44
Pipe temperature
thermistor
- : Liquid (TH2)
- : Cond./Eva. (TH5)
CN20
Room temperature
thermistor (TH1)
LED1
Power supply (I.B)
CN30
Connector (LLC)
CNMF
Fan motor
- : DC 294~325V
- : DC15V
CNP
Drain-pump output (DP)
(208/230V AC) (option)
PCA-A36KA4 PCA-A42KA4
LED3
CN2L
Transmission
Connector (LOSSNAY)
(Indoor/outdoor)
26
CNV
Vane motor output (MV)
12V pulse output
SW1
Model selection
SW2
Capacity setting
Jumper wire J41,J42
Pair No. setting for IR wireless
remote controller
SWE
Emergency operation
CN51
Centrally control
- : Control signal
13VDC pulse input ( : +)
- : Operation indicator
13VDC ( : +)
- : Malfunction indicator
13VDC ( : +)
CN41
Connector (HA terminal-A)
CN24
Connector (Back-up heating)
CN22
Connect to the terminal block (TB5)
(Remote controller connecting wire)
(10.4~14.6V DC)
CN3C
Transmission (Indoor/outdoor)
(0~24V DC)
V : Voltage between pins of
CC
C955 15VDC
(Same as (+)– (-) of CNMF)
CN01
Connect to the Terminal Block
(TB4)
(Indoor/outdoor connecting line)
Between and
208/230V AC
FUSE
6.3A /250V