EasyManuals Logo

Airwell johnson DCH Series User Manual

Airwell johnson DCH Series
66 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #48 background imageLoading...
Page #48 background image
TROUBLESHOOTING
Version - 1 48 DCH DCI
10.2.10 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:
Check the wiring between main PCB
and compressor
Correct the connection or replace
the wires and connectors.
Yes
No
Check the IPM No
Yes
Replace the IPM board or replace
the main PCB
Check the outdoor fan and the
outdoor unit ventilation
No
Please refer to the solution of Fan
Speed Has Been Out Of Control
malfunction
Yes
Check the compressor resistance
values
No Replace the compressor.
Yes
Replace the outdoor main PCB

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Airwell johnson DCH Series and is the answer not in the manual?

Airwell johnson DCH Series Specifications

General IconGeneral
BrandAirwell
Modeljohnson DCH Series
CategoryAir Conditioner
LanguageEnglish

Related product manuals