E03
Beretta
Flue / Fan / Air Pressure Fault
E03 displayed; fan runs but burner does not ignite
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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
Blocked flue, Faulty fan, Defective air pressure switch, Blocked condensate trap
How to Fix / Troubleshooting
Safety: Flue faults can be dangerous. Switch off the heater and ventilate the area.
- 1. Check flue terminal: Ensure the external terminal is clear.
- 2. Inspect condensate trap: On condensing models, check that the condensate trap and drain are not blocked, which can affect pressure readings.
- 3. Technician tests: A professional should test the fan, pressure switch, and tubing, and verify flue integrity.
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Repair Difficulty
Professional Required
5/5
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