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Service Manual
5.2 PCB Printed Diagram
Indoor unit mainboard
4
3
2
1
No.
1
2
3
4
5
6
7
8
9
10
Technical Information
5
19
6
Name
Interface of grounding wire
Live wire of outdoor unit
Live wire of indoor unit
Neutral wire of discharge motor
Live wire of discharge motor
Neutral wire of dual copper insert
Interface of auxiliary heater
Interface of DC motor
Up&down swing interface 2
Up&down swing interface 1
7
8
20
No.
11
Left&right swing interface
12
Interface of fresh air pipe switch
13
Interface of fresh air motor
14
Interface of CO
15
Jumper cap
16
Interface of UVC
17
Interface of display board
18
Interface of temperature sensor
19
Fuse
Interface of IDU and ODU
20
communication wire
9
10
18
17
Name
module
2
11
12
13
14
15
16
11
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