High Lockout
E 44 on Vokera Hydra

Your boiler has detected an internal electronic error within its main control brain, meaning it has safely shut itself down to prevent further issues.

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 fault (PCB)

What causes this fault?

This fault occurs when the boiler's internal computer brain suffers a communication breakdown or a component failure on the circuitry. It is usually caused by a hardware malfunction within the control board itself or a loose electrical connection that prevents the board from sending instructions to the burner.

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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