Combi boilers provide instant heat and hot water on demand. They are much more efficient than having a water tank, but need to be regularly serviced as they have much more moving parts and are prone to problems. They are a great system for small houses which don’t need a reserve of hot water, or simply don’t have the space for a hot water tank. Statistically, over half of UK households have a combi boiler.
If you are having problems with your boiler, there are some issues that can be repaired easily at home without having to get anyone to come out. Before you start anything however, it is very dangerous to tinker with your boiler if you’re not sure what you’re doing. A boiler is connected to a gas supply so should anything be done incorrectly it can cause terrible consequences. If in any doubt call out an engineer.
The fixes below are for very minor issues with your combi boiler, so you don’t have to get into the guts of your boiler or dismantle anything. It certainly helps if you have a good idea of what is causing the issue.
If your radiators aren’t heating up and you don’t have any hot water, there are a couple of things you can check before calling a heating engineer. Check the pressure on the boiler. Usually it will show an error – you can check your manual for what each error means and act accordingly. If there isn’t enough water in the system, you may have to refill it. This can be done by opening the valves beneath the boiler. Operating temperatures normally sit between 1 and 1.5, and if the pressure falls below this, the boiler can stop working. If the pressure is much higher you will need to empty the system. Make sure you read the manual carefully and follow the instructions to the letter as otherwise you may find yourself causing further problems.
Another reason why your boiler may not be working could be down to the pilot light. If this does go out, you should be able to relight it safely yourself. Sometimes even just restarting your boiler does the job. Again – and we can’t stress this enough – make sure you read the manual. There should be instructions in there as to how to light the pilot light. Ensure you fully understand the instructions before attempting the fix.
Our last tip is not to blame your boiler! Sometimes if your boiler isn’t working it could be a problem with your gas supply. To make sure, go through your house to see if other gas appliances, such as your fire or cooker, are working ok. If there is a problem with these too, it could be down to the gas and you need to call your energy company.
These are quick and easy tips to get your boiler back up and running again, but should there be any issues you are unsure about or don’t feel comfortable attempting the repairs above yourself, always call out a professional. We recommend APG Domestics for boilers repairs in Preston.