BoilerFaultCodesWhat the manual says
Manufacturer manualHeating mode frost protection error
Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
Ensure the room thermostat and radiator valves are turned up to allow water to circulate.Verify that the boiler's electrical supply is left on to allow the built-in frost protection to run.Gently warm the area around the boiler or pipes if they are located in a very cold garage or loft.
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