High Lockout
E 32 on Vokera Hydra

Your boiler has detected a faulty electrical signal from the pipe that brings water back into it, which is preventing the system from heating up correctly.

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

Short circuit on return sensor

What causes this fault?

This fault occurs when the internal sensor responsible for monitoring the temperature of the water coming back into the boiler fails or loses its connection. It is usually caused by the sensor's internal electrical circuit failing over time or moisture affecting the wiring, which prevents the boiler from safely calculating how much heat is needed.

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

E 31View →

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