Panasonic CS-E24LKES Service Manual page 80

15.5.22. F17 (Indoor Standby Units Freezing Abnormality)
Malfunction Decision Conditions
• When the different between indoor intake air temperature and indoor pipe temperature is above 10°C or indoor pipe temperature
is below -1.0°C.
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
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