Panasonic CS-E7NKEW - F11 (4-Way Valve Abnormality)

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16.4.19 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