Technical description
Burner anti-freeze: When the boiler senses a temperature of 3°C or lower, the boiler will fire at minimum power until a temperature of 33°C is achieved, the pump will run for 2 minutes after the burner is switched off.
DIY fix possible
Ensure the gas supply is turned onCheck that the boiler power is switched on so the pump can circulate waterIncrease the room thermostat temperature slightly to warm the propertyCheck for any frozen external pipes (condensate pipe) and defrost with warm water if necessary
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