18
Service Manual
Technical Information
5.3 Printed Circuit Board
Main board
7654321
10111415 13 12 9819 18 17 16
1
Board connection wire
interface needle
6 Fuse 11
resistance-capacitor
module
16
Outdoor tube
temperature sensor
2 Buzzer 7 Live wire copper insert 12 High fan speed interface 17
Indoor ambient
temperature sensor
3 7805 regulated block 8 Transformer input port 13
Medium fan speed
interface
18
Indoor tube
temperature sensor
4 Transformer outlet port 9 Piezoresistance 14 Low fan speed interface 19
Board connection
wire needle interface
5 Compressor relay 10
Neutral wire copper
insert
15 4-way valve interface 20 /
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