- outside air temperature below about +5°С;
- the fuse has blown. The fuse should be checked and replaced if necessary. If the reason for the failure to work is not a blown fuse, the air conditioner must be turned off and contacted by specialists;
- The refrigeration compressor has temporarily switched off due to too high coolant temperature.
If the cooling capacity of the unit has decreased, it is necessary to turn off the unit and contact a specialist.
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