89
16.5.3 Water Pump Abnormality (H20)
Malfunction Decision Conditions:
During startup and operation of cooling and heating, the rotation speed detected by the IPM of water pump motor
during water pump operation is used to determine abnormal water pump (feedback of rotation > 6,000rpm or <
1,000rpm).
Malfunction Caused:
1 Operation stop due to short circuit inside the water pump motor winding.
2 Operation stop due to breaking of wire inside the water pump motor.
3 Operation stop due to breaking of water pump lead wires.
4 Operation stop due to water pump motor IPM malfunction.
5 Operation error due to faulty indoor unit PCB.
Abnormality Judgment:
Continue for 5 seconds.
Содержание WH-SHF09F3E5
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