BoilerFaultCodes.com
56:1 Medium Warning

Your boiler's hot water sensor is reporting an unusually high temperature range, which may prevent your hot water from heating correctly.

Book a service

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: DHW temperature adjustable from 10 to above 60°C (subject to boiler coding card; only for gas fired boilers)

What causes this fault?

This fault occurs when the sensor responsible for monitoring your hot water temperature starts sending irregular or 'out of range' signals to the boiler's internal computer. The most common reason is that the sensor has developed an electrical fault or the internal wiring has become slightly corroded, preventing the boiler from knowing exactly how hot your water is. Because the boiler cannot safely verify the temperature, it may restrict hot water production as a precaution.

Typical repair cost £120-£220 (including labour)

Engineer required

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

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