BoilerFaultCodesYour boiler's hot water sensor has failed, which means the system cannot accurately heat water for your taps and showers.
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: Domestic hot water (DHW) sensor damaged
What causes this fault?
This fault occurs when the sensor responsible for monitoring the temperature of your tap water fails or sends an incorrect signal to the boiler's control board. The most common reason is the sensor’s internal components wearing out over time or the electrical wiring becoming loose or corroded due to heat exposure.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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