Mitsubishi Electric Mr. Slim PCA Series Service Manual page 29

9-7. TEST POINT DIAGRAM
Indoor controller board
PCA-A24KA6.TH
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–
1– 2: Liquid (TH2)
3– 4: Cond./Eva. (TH5)
CN20
Room temperature
thermistor (TH1)
LED1
Power supply (I.B)
CN30
Connector (LLC)
CNMF
Fan motor
1–4: 294–325 V DC
5–4: 15 V DC
CNP
Drain-pump output (DP)
(208/230 V AC) (option)
OCH585
PCA-A30KA6.TH
LED3
Transmission
(Indoor/outdoor)
29
PCA-A36KA6.TH
CN2L
Connector (LOSSNAY)
CNV
Vane motor output (MV)
12 V 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
1–2: Control signal
3–4: Operation indicator
3–5: Malfunction indicator
CN41
Connector (HA terminal-A)
CN24
Connector (Back-up heating)
CN22
Connect to the terminal block (TB5)
(Remote controller connecting wire)
(10.4–14.6 V DC)
CN3C
Transmission (Indoor/outdoor)
(0–24 V DC)
V
CC
C955 15 V DC
(Same as 5(+)–4( ) of CNMF)
CN01
Connect to the Terminal Block
(TB4)
(Indoor/outdoor connecting line)
Between 3 and 5
208/230 V AC
FUSE
6.3 A , 250 V
PCA-A42KA6.TH
13 V DC pulse input (1: +)
13 V DC (3: +)
13 V DC (3: +)
: Voltage between pins of