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16.4.19 F17 (Indoor Standby Units Freezing Abnormality)
Malfunction Decision Conditions
When the different between indoor intake air temperature and indoor pipe temperature is above 50°F or indoor
pipe temperature is below 30.2°F
Remark:
When the indoor standby unit is freezing, the outdoor unit transfers F17 error code to the corresponding indoor
unit and H39 to other indoor unit(s).
Malfunction Caused
Wrong wiring connection
Faulty sensor
Faulty expansion valve
Troubleshooting