NewAir
Loss of Cooling Capacity / Refrigerant Issue
Unit blows warm air instead of cold, even though compressor is running.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Low refrigerant charge due to leak, restricted capillary tube, failing compressor valves, severely dirty condenser coil
How to Fix / Troubleshooting
Safety: Unplug the unit before cleaning. Refrigerant work must be done by a licensed technician.
Steps:
- Clean condenser coil: Thoroughly clean the hot condenser coil to improve heat rejection.
- Check fan operation: Ensure both indoor and condenser fans are running properly.
- Observe frost pattern: With covers removed (and observing safety), briefly run the unit and inspect the evaporator. A small amount of frost only near the capillary inlet can indicate low charge or restriction.
- Professional service: If cleaning and airflow checks do not restore cooling, contact a licensed HVAC technician to check refrigerant pressures, locate leaks, and repair the sealed system.
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Repair Difficulty
Professional Required
5/5
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