III - 20
Service Procedures
3
SM830063
(17) Symptom: LCD on the remote controller displays “CHECK H11, H12, H13”. (AC compressor current detection)
1. Troubleshooting
0347_M_I
“CHECK H12” display
Compressor lock detection
• Insufficient voltage
• Electromagnetic contact defect
• Refrigerant over-charged
Start
Compressor lock
“CHECK H11” display
Compressor overload detection
• L3 phase wire disconnected
• Electromagnetic contact defect
• Outdoor PCB defect
“CHECK H13” display
Compressor current detection
circuit defect
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