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6. Printed Circuit Board Connector Wiring Diagram
Connectors
PCB(1) (Control PCB)
1)
CN9 Connector for fan motor
2)
CN6 Connector for heat exchanger thermistor and Room temperature thermistor
3)
CN5、CN5' Connector for UP&DOWN STEP motor
4)
CN11、CN11' Connector for RIGHT&LEFT STEP motor
5)
CN21（white line）、CN52(black line) Connector for indoor terminal N and L
6)
CN8 Connector for display board
7)
CN23 (red line) Connector for communicate between the indoor board and the outdoor board
8)
CN36
Connector for long-range control
9)
CN34
Connector for wifi Module
10)
CN2
Connector for wired controller
11)
CN51
Connector for room card
Note: Other designations
PCB(1) (Indoor Control PCB)
1) CN14 Connector for Forced operation ON / OFF switch
2) FUSE1 Fuse 3.15A/250VAC
3) Pin-1: OFF-match A code remote control; ON-match B code remote control
Pin-2: OFF-no room card control; ON-with room card control
Pin-3 and Pin-4 combined control, corresponding to 23, 26,33and35of the
machine respectively
4) Jumper J1 and J2 combined control, corresponding to different series of
display boards;
ON means keep; OFF means cut
OFF ON 3 ON ON OFF OFF
1
A
B 4 ON OFF ON OFF
2 N_RC RC
J1
J2
DISPLAY SERIES
UNIT MOUDLE
AS25XCHHRA-NR
AS35XCHHRA-NR
35 33
26
23
ON
OFF
OFF
OFF
387/989
325/498
PCB MOUDLE
1
OFF
0011801123E（23）
OFF
0011801123E（26）
OFF
ON
ON
ON
324
317
2
3
4
DISPLAY MOUDLE
ON
OFF
OFF
0011800989
ON
OFF
ON
0011800989
11
Connector Wiring diagrams
J1
J2
ON OFF
ON OFF
Domestic air conditioner
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