Troubleshoot Your Boiler

Check the pilot light. If the pilot light is out, you can usually relight it yourself. Check your boiler’s manual for instructions on how to do this.
Check the gas supply. Make sure that the gas supply to your boiler is turned on. If it is not, turn it on and try again.
Check the thermostat. Make sure that the thermostat is set to a temperature that is high enough to turn on the boiler.
Check the water pressure. The water pressure in your boiler should be between 1 and 1.5 bar. If the water pressure is too low, the boiler may not be able to produce enough heat.
Check the flue. The flue is the pipe that carries the exhaust gases from your boiler to the outside. Make sure that the flue is not blocked or damaged.
Call a qualified technician. If you have checked all of the above and your boiler is still not working, call a qualified technician to diagnose and repair the problem.

Keep your boiler clean. A dirty boiler can be less efficient and more likely to break down.
Have your boiler serviced regularly. A regular service will help to identify and fix any potential problems before they cause a breakdown.
Use the right type of fuel. Make sure that you are using the type of fuel that is recommended for your boiler.
Don’t overload your boiler. Don’t ask your boiler to do more than it can handle. If you are using your boiler for multiple appliances, make sure that the total load is within the boiler’s capacity.

Be aware of the signs of a problem.

If you notice any of the following signs, call a qualified boiler technician immediately: