47
9.3.11 Inverter compressor drive error diagnosis and solution(P4)
Error Code
P4
Malfunction decision
conditions
An abnormal inverter compressor drive is detected by a special
detection circuit, including communication signal detection,
voltage detection, compressor rotation speed signal detection
and so on.
Supposed causes
●
Wiring mistake
●
IPM malfunction
●
Outdoor fan ass
’
y faulty
●
Compressor malfunction
●
Outdoor PCB faulty
Trouble shooting:
Содержание MSMBB-12CRDN1-MP0W
Страница 7: ...5 2 2 Part names of Indoor Outdoor units ...
Страница 9: ...7 For MSMBB 12CRDN1 MP0W For MSMBC 18CRDN1 MP0W For MSMBD 22CRDN1 MP5W ...
Страница 13: ...11 MOF1 22CDN1 MP5W ...
Страница 25: ...23 ...
Страница 32: ...30 MOF1 22CDN1 MP5W ...
Страница 36: ...34 9 2 3 Zero crossing detection error diagnosis and solution E2 ...
Страница 39: ...37 supply or 50V 115V power supply the PCB must has problems and need to be replaced ...
Страница 45: ...43 P W N U ...
Страница 46: ...44 N V N W ...