High Lockout
e7 on Remeha Avanta Plus 35c

Your boiler is struggling to ignite or detect a flame correctly during its starting sequence and has paused for safety.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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 procedure (requires 3 minute venting cycle after resolution)

What causes this fault?

This fault occurs when the boiler fails to establish or maintain a stable flame during the ignition sequence. The most common reasons include a worn-out ignition electrode that can no longer produce a spark, or a faulty sensor that fails to tell the boiler that the gas has successfully lit.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
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Related fault codes

E4View →E5View →

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