High Lockout
E34 on Remeha Quinta 30

Your boiler has detected an issue with the fan that safely clears exhaust gases, preventing the system from starting for safety reasons.

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

Fan speed failure: check the fan and connector.

What causes this fault?

This fault occurs when the boiler's control system loses communication with the fan or detects that it isn't spinning at the correct speed to safely clear waste gases. The most common reasons are a buildup of dust and debris seizing the fan bearings, loose electrical connections, or a failure in the fan's motor.

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

E04View →E14View →E35View →

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