Proper positioning of the outdoor unit is critical for reliable operation at low temperatures.
Height from the ground
The unit must be high enough so that snow or ice from defrosting does not block the heat exchanger or the drainage.
Free airflow
Minimum clearances from walls and obstacles must be maintained according to the manual.
Wind
Strong winds can affect airflow and fan operation. Where necessary, appropriate protection should be used without restricting the unit's airflow.
Defrost drainage
Water must be drained away without creating ice patches or refreezing underneath the unit.