Panasonic Understanding 4 Way Valve Problems and F11 Error Code in Air Conditioning Systems

15.4.14. F11 (4-way valve Abnormality)

Malfunction Decision Conditions

•When heating operation, when indoor pipe temperature is below 10°C

•When cooling operation, when indoor pipe temperature is above 45°C

Malfunction Caused

•Connector in poor contact

•Faulty sensor

•Faulty outdoor unit PCB

•4-way valve defective

Troubleshooting

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