High Lockout
E8 on Remeha Quinta Ace 25

Your boiler has stopped working because its internal computer has detected a problem with the electronic circuit that manages the flame.

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

Internal control box error (flame circuit fault)

What causes this fault?

This fault occurs when the boiler's main control board fails to correctly process the signals required to manage and monitor the burner's flame. The most common reason is a physical failure of the internal electronics on the circuit board, though it can also be triggered by worn-out ignition parts or damaged wiring that disrupts the signal flow.

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

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