Check your fuse box
If your boiler isn’t working but other gas and electrical appliances are, you should check your fuse box to make sure a switch hasn’t tripped and cut the power to your boiler.
Have you tried turning it off and on again?
Sometimes the simplest solutions are the most reliable... If you still don’t have hot water, try turning the boiler off at the mains for a few seconds, before turning it back on again.
Check your pilot light
If you don't see a flame your pilot light is out. If it has blown out, you can try relighting it. If you think you can smell gas, don’t attempt to relight the pilot light, contact the Gas Emergency Line on 0800 111 999.
If you can relight it, but it keeps blowing out you will need to call an engineer. You can find one using the gas safety register, or by calling 0800 408 5500.
Could it be a water pressure issue?
Your boiler works best when the water pressure is between 1 and 1.5 on the bar. If the pressure’s not quite high enough, you can adjust it carefully using the filling loop.
Is your boiler’s timer correct?
Your boiler’s timer can be thrown off by power cuts or accidental knocks, so you should double check that yours is set correctly.
Do you have a water tank or cylinder?
Is the problem with the thermostat or timing on the tank or cylinder? Check it's showing the right settings, and if not have a look at the owners manual.
Do you need to reset your boiler?
Boilers require an occasional reset for all sorts of reasons, and not all of them are serious.
Once you’ve located your reset button, try resetting it according to the manufacturer’s instructions. If your reset button is inside the boiler’s casing, you should contact a Gas Safe engineer.
Could you have a frozen pipe?
If it’s very cold outside, it’s not uncommon for a boiler’s condensate pipe to freeze. You can try to thaw it by pouring warm (not boiling) water over it, or by putting a hot water bottle against the pipe.
