E1 254
Worcester Bosch
Lockout Due to Repeated Ignition Failure
Boiler shows E1 254 and locks out, often after several failed ignition attempts.
Advertisements
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.
Advertisements
Possible Causes
Persistent ignition fault, Gas valve malfunction, Blocked burner, Faulty ignition or ionisation electrodes
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset a boiler that continually fails to ignite. Isolate gas and power and call an engineer.
- Single reset: Attempt one reset. If the boiler fails to ignite and E1 254 returns, stop resetting.
- Check gas supply: Confirm other gas appliances work. If not, contact your gas supplier.
- Engineer diagnosis: A Gas Safe engineer should inspect the burner, electrodes, gas valve, and combustion settings, and rectify the underlying ignition problem.
Advertisements
Repair Difficulty
Professional Required
5/5
Advertisements