BoilerFaultCodesYour boiler has lost its connection to one of the temperature sensors used to control your heating, though it will likely keep running in a basic backup mode.
This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.
Technical description: Control mode without room influence - Heating circuit M2 room temperature sensor shorted out
What causes this fault?
This fault occurs when the boiler loses a reliable signal from the sensor that monitors the temperature inside your living area. It is typically caused by a frayed or loose connection in the wiring, or a internal failure within the sensor itself, meaning the boiler no longer knows how warm your rooms actually are. Instead of shutting down completely, the system reverts to a basic setting to ensure you still have some heat.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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