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14.2.13. Heater 1 Overheat Abnormality (H91)
Malfunction Decision Conditions:
During startup and operation (with heater 1 ON), when no power supplies to heater 1.
Malfunction Caused:
1. Faulty power supply connector connection.
2. Faulty heater 1 overload protector (OLP).
3. Faulty water tank top temperature sensor / heater 1 temperature sensor connector connection.
4. Faulty water tank top temperature sensor / heater 1 temperature sensor.
5. Faulty water tank unit PCB.
Abnormality Judgment:
Continue for 10 seconds.
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