Panasonic · Aquarea Heat Pumps
The indoor heat exchanger freeze prevention mechanism has activated, typically due to dangerously low temperatures within the heat exchanger.
Click steps to track your progress.
Ensure the indoor unit area is not exposed to excessively cold drafts or temperatures.
Check that the water pump is operating correctly and water is circulating properly through the heat exchanger.
If the error persists, contact a qualified technician to check for refrigerant shortage or to inspect the heat exchanger.