MEDIUMError Code
A5: Freeze Prevention Active (Heat Pump)
Heat pump freeze prevention mode activated, temporarily stopping operation.
What This Error Code Means
System detected conditions that could cause freezing.
Common Causes
Low outdoor temperature
Low refrigerant charge
Coil sensor reading incorrectly
Defrost cycle malfunction
Airflow restriction
Affected Brands
DaikinMitsubishiFujitsuLGSamsungCarrierTrane
How ROMA Heating Fixes This Error Code
Check refrigerant pressure
Inspect outdoor coil for ice
Test coil temperature sensors
Verify defrost cycle
Clear outdoor unit obstructions
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