36
Model
GPD15-5S:CirculationPump
CheckPoint
(CircuitBoard)
CN9
Function
Providescirculationthroughtheheatexchanger.
FailureEvent
Waterowisnotdetected.
Eects
①Unitdoesnotoperate.
②Circulationpumpisnotoperating.
ErrorCode
Er44,Er60
Diagnostic
①Visualinspection:checkwiringforproperconnection.
②Checksupplyvoltage.
Color/WireNumber
InternalCHprimarycirculationpump:Connector(blue⑨,brown③)
1
2
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5
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7
8
9
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12
Chapter2ComponentsDescription