III - 19
Service Procedures
3
SM830063
(15) Symptom: LCD on the remote controller displays “CHECK P05”. (Reversed phase detection)
1. Troubleshooting
Yes
No
No
No
Yes
Yes
0345_M_I
Start
Check the power breaker etc.
and repair
No problem
Correct the connection
Replace the outdoor PCB
Is the power supply to the outdoor
unit normal?
(Voltage defective phase?)
Are two of the phases of the power
for the outdoor unit reversed?
(Reverse phase detected alarm)
Is there a contact defect in the
3P connector (CN40, white)
(16) Symptom: LCD on the remote controller displays “CHECK H01, H02, H03”. (PC compressor current detection)
0346_M_I
“CHECK H02” display
Compressor lock detection
• Insufficient voltage
• Electromagnetic contact defect
• Refrigerant over-charged
Start
Compressor lock
“CHECK H01” display
Compressor overload
detection
• L3 phase wire disconnected
• Electromagnetic contact defect
• Outdoor unit PCB defect
“CHECK H03” display
Compressor current detection
circuit defect