Medium
LED 2 (D.H.W.) on Ferroli Optima 201

Your boiler is failing to detect when you turn on your hot water tap, so it isn't starting up to warm the water.

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

D.H.W. flowmeter (136) not operating.

Engineer required

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

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