Your boiler has failed to light, which means it cannot provide the gas flame needed to heat your water and radiators.

DIY fix possible

Check that your gas prepayment meter has credit (if applicable).Ensure other gas appliances, like a hob, are working to confirm gas supply is active.During freezing weather, check if the external white plastic pipe (condensate pipe) is frozen and thaw it with warm water.Press the Reset button for five seconds to attempt a restart.