Medium Lockout
E31 on Remeha Quinta 30

Your boiler has lost connection with the sensor that monitors your hot water temperature, which usually means it can't heat your water properly.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Interruption DHW sensor: check wiring and sensor.

What causes this fault?

This fault occurs when the boiler's main control board can no longer detect a signal from the domestic hot water temperature sensor. It is usually caused by the internal sensor failing due to age or a loose electrical connection in the wiring harness that links the sensor to the brain of the boiler.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

E5View →E6View →E30View →

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