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17.5.7. Indoor Backup Heater OLP Abnormality (H70)
Malfunction Decision Conditions:
During operation of indoor backup heater, when no power supplies to indoor backup heater or OLP open circuit.
Malfunction Caused:
1. Faulty power supply connector connection.
2. Faulty connector connection.
3. Faulty indoor backup heater overload protector (OLP).
4. Faulty indoor unit PCB (main).
Abnormality Judgment:
Continue for 60 seconds.
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