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108 PB
COMPONENTS TESTING
Figure 705
18‑24k Outdoor Unit Printed Circuit Board Identification
Outdoor Unit
No. N mea
1
2
Compressor three phase input
interface
3
Interface of system high pressure
protection
5
Interface of electronic expansion
valve
4
Compressor overload protection
interface
6
Interface of temperature sensor
7
Interface of system low pressure
protection
8
Interface of fan
10
11
4-way valve interface
9
12
2-way valve interface
14
Communication interface
13 Interface of live wire
Interface of earthing wire
15 Interface of netural wire
● Top view
● Bottom view
1 2 3 4 65 7 98
Interface of electric heating for
compressor
10
11
12
13
14
15
Interface of electric heating for
chassis
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