How much does it cost to fix Main error code E1?

Typical repair cost for the Main E1 fault is £100-280 including labour.

E1 High

Main E1 Fault Code

Q: What does the Main E1 fault code mean?

Your boiler has failed to light or cannot detect that the flame is burning, so it has shut down as a safety precaution.

The Main E1 fault code means: your boiler has failed to light or cannot detect that the flame is burning, so it has shut down as a safety precaution.. It appears on 1 Main model in our database.

Technical description: Ionization fault (no flame signal)

Typical repair cost £100-280 (including labour)

DIY fix possible

Check if other gas appliances in your home, like a hob, are working to ensure gas is being supplied.If you have a prepaid gas meter, check that it has sufficient credit.Press and hold the reset button for several seconds to try and restart the boiler.

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Main models that show the E1 fault code

Click a model for the full fault code list and model-specific repair notes.

Multipoint FF 3 Repair: £100-280

Source

Main E1 fault code information on this page is sourced and cross-checked against the official Main service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026