High Lockout
E14 on Remeha Quinta 30

Your boiler’s internal computer has suffered a critical failure and can no longer control the heating process safely.

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 failure: check/replace the control box.

What causes this fault?

This fault occurs when the boiler's main control board experiences an internal electronic failure, meaning it can no longer process data or manage safety checks accurately. The most common reason is age-related wear on the circuit board's components or a sudden electrical surge that has damaged the delicate internal wiring.

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

E01View →E12View →E36View →

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