55 PB
COMPONENTS TESTING
Printed Circuit Board (Outdoor)
Figure 614
1846941 Outdoor Unit Printed Circuit Board Identication
1 Terminal of reactor 10 Terminal of electronic
expansion valve
2 Terminal of compressor 11 DRED Function
3 Terminal of DC fan 12 Terminal of AC fan
4 Heat Sink temperature
sensor
13 Cool Valve terminal
5 PressureProtector 14 Heater terminal
6 Compressor discharge
temperature sensor
15 4‑way valve terminal
7 Outdoor ambient
temperature sensor
16 Terminal of communication
wire
8 Outdoor pipe temperature
sensor
17 Terminal of live wire
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