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17.5.26
Four Way Valve Abnormality (F25)
Malfunction Decision Conditions:
1
During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 0°C.
2
During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C.
Malfunction Caused:
1
Faulty sensor.
2
Faulty connector connection.
3
Faulty outdoor unit PCB (noise filter/main).
4
Faulty four way valve.
Abnormality Judgment:
Continue 4 times in 30 minutes.
135
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