Medium
DHW Flow Switch section on Baxi Combi Elite

Your boiler is not detecting that you have turned on your hot water tap, meaning the water will likely stay cold.

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

LED 1: Flash, LED 2: On, LED 3: On, LED 4: Off

Engineer required

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

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