Whilst there are a huge number of reasons why a boiler will stop working, here are 5 of the most common reasons.  Your boiler should produce a fault code when it breaks so before you call JSL Heating, please make sure that you have read the fault code and matched it up to the designation in your boiler manual.  These small bits of information can help us to better identify the issue you are having with your boiler and allows us to be better prepared to fix the issue when we arrive at your Glasgow address.

#1 – Gas Valve Fault

The gas valve on your boiler controls the flow of gas to your boiler. When you need more heat in your home, the boiler gas valve will allow more fuel to flow – increasing the power output. However the gas valve can block and faulty wired connections can mean the valve does not operate the way it is supposed to.

#2 – Blocked Burner

Boilers, whilst a lot more efficient than they used to be, still produce carbon based gases. This gas can get clogged in the boilers burner, meaning that the boiler will run inconsistently or simply refuse to start up for heating and hot water requirements.

#3 –Low Gas Pressure/No Gas

If the gas pressure goiong to your boiler is either too high or too low, your boiler will automatically shut off. If it does this – your boiler will display a fault code. If your boiler is having this issue during the cold winter months, it is possible that your gas meter is freezing.

# 4 – Ignition Problems

If you can hear a clicking or ticking noise from your boiler then it is likely that you have an ignition lead problem. If the boiler does ignite but then immediately goes straight off – it is a gas issue. If it will not ignite at all – it is because of an ignition issue.

#5 – Faulty Fan

Your boiler produces gases and the very first thing that a boiler does when it begins working is to turn on the exhaust fan. If the exhaust fan is not working for some reason then the boiler will not begin the rest of the start up procedure.