18.2.14 Indoor Unit Freezing Abnormality (F31-08)
Malfunction Decision Conditions
•
During operation of cooling, and when outdoor unit receive indoor unit freezing abnormal signal (indoor pipe
temperature < 0°C) from thermostat OFF/standby indoor unit.
Malfunction Caused
•
Faulty sensor.
•
Faulty indoor unit expansion valve.
•
Faulty indoor unit PCB (main).
Abnormality Judgment
•
Continue 3 times in 45 minutes.
Troubleshooting
215