E01
Immergas
Ignition Failure
Boiler shows E01, ignition failure, similar to A01 on some models.
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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
No gas, Ignition electrode fault, Ionisation fault, Gas valve not opening
How to Fix / Troubleshooting
Safety: Follow the same precautions as for ignition lockouts. Do not repeatedly reset.
- Check gas supply and reset once.
- Engineer inspection: Clean/replace electrodes, test gas valve and wiring, and verify combustion.
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Repair Difficulty
Professional Required
5/5
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