E1 High

Remeha E1 Fault Code

The Remeha E1 fault code means: your boiler has failed to ignite properly and is currently trying to clear its internal system before attempting to start again.. It appears on 11 Remeha models in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Error during start-up or operation; followed by a 3 minute venting cycle

What causes the Remeha E1 fault?

This fault occurs when the boiler's control system cannot detect a steady flame after trying to ignite several times. The most common reasons are a lack of gas reaching the burner, a build-up of carbon on the ignition parts, or a sensor failing to tell the boiler that the fire has successfully lit. This leads the unit to enter a safety venting cycle to clear any unburnt gas before it tries again.

This issue is more frequent during extreme cold snaps, as external gas meters can occasionally freeze or supply pressures can drop when local demand is at its peak.

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your gas emergency control valve is in the open positionEnsure other gas appliances in your home are working to confirm gas supplyPress and hold the 'Reset' button for two seconds once the 3-minute venting cycle has finished

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Remeha models that show the E1 fault code

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

Source

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

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