Panasonic S-22KA1E5 - Four Way Valve Abnormality (F31-06)

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19.11 Four Way Valve Abnormality (F31-06)
Malfunction Decision Conditions
• During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 5°C.
• During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C.
Malfunction Caused
• Faulty sensor.
• Faulty connector connection.
• Faulty outdoor unit PCB (main/noise filter).
• Faulty four way valve.
Abnormality Judgment
• Continue 3 times in 45 minutes.
Troubleshooting