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Trouble shooting
Si04-115
66
Service Diagnosis
5. Trouble shooting
5.1
Faulty PCB
Remote
Controller
Display
A1
A1
A1
A1
Indoor unit LED
Display
Method of
Malfunction
Detection
Evaluation of zero-cross detection of power supply by indoor unit.
Malfunction
Decision
Conditions
"
When there is no zero-cross detection in approximately 10 continuous seconds.
"
When the information saved in E
2
PROM cannot be read.
Supposed
Causes
"
Faulty indoor unit PCB
Troubleshooting
"
Replace the indoor unit PCB.