High Lockout
E65 on Vokera Pinnacle

Your boiler is unable to blow out the waste gases properly because the fan is not spinning fast enough to stay safe.

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

Not enough fan driving force

What causes this fault?

This fault occurs when the boiler's internal computer detects that the fan isn't reaching the speed required to safely clear exhaust fumes from the system. It is usually caused by the fan motor wearing out over time or a communication failure where the control board can no longer tell the fan how fast to spin.

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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