BoilerFaultCodesYour boiler's hot water temperature sensor has developed a fault, meaning the system cannot accurately measure or provide hot water.
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: Hot Water NTC Fault
What causes this fault?
This fault occurs when the internal sensor responsible for monitoring your hot water temperature fails or sends an incorrect signal to the main control board. The most common reason is that the sensor has physically degraded over time or developed a lime-scale coating, preventing it from reading the water temperature accurately.
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.
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