Baxi
Loss of Cooling Capacity
Unit turns on but does not cool; fan runs but air is not cold in cooling mode
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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, Dirty indoor or outdoor coils, Failing compressor, Stuck expansion valve or capillary restriction
How to Fix / Troubleshooting
Steps:
- 1. Confirm mode and setpoint: Ensure the Baxi unit is in COOL mode with a set temperature at least 3–5°C below room temperature.
- 2. Clean filters and coils: Wash indoor filters and gently clean indoor and outdoor coils to restore airflow.
- 3. Check outdoor unit operation: Verify that the outdoor fan and compressor are running when cooling is requested.
- 4. Observe piping: The larger insulated pipe at the outdoor unit should be cool and may sweat slightly in cooling mode. If both pipes are warm and no cooling occurs, refrigerant issues are likely.
Action: A certified technician must check refrigerant pressures, locate leaks, and repair/charge the system. Do not attempt to add refrigerant yourself.
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Repair Difficulty
Professional Required
5/5
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