BoilerFaultCodesTechnical description
Anti cycling period
What causes this fault?
This occurs when your boiler has reached its target temperature and shuts down briefly to prevent it from 'ping-ponging' on and off. It is triggered because the heat being produced is currently greater than what your radiators can dissipate, so the system pauses to let the water cool slightly. This protects the internal components from excessive wear and tear caused by frequent starting and stopping.
This is more common during the autumn and spring when the weather is milder and your home requires less heat to stay warm.
DIY fix possible
Wait 5 to 15 minutes for the countdown timer to finish naturallyCheck that your room thermostat is turned up higher than the current room temperatureEnsure radiator valves are open to allow heat to move away from the boiler