High
E5 on Remeha Avanta 28c

Your boiler is failing to light the flame or keep it running, so it has safely locked itself off to prevent gas from escaping.

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

No ionisation or ionisation failure more than 5 times during one heat demand

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.

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Related fault codes

E4View →E13View →

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