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Why is There No Power Coming to My Boiler?

Having boiler trouble? We’ve all been there. During the colder months in particular, it can be frustrating to lose access to hot water and central heating. Don’t panic too much though - it’s easy to get it up and running again by following our tips or with a potential boiler repair.

The good news is that boiler problems are never too worrying. Usually, boiler failure can be down to something as simple as an electrical fault, but there are many other common causes to be aware of when your boiler isn’t working.

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Common causes of why there’s no power coming to your boiler

Blown fuse

One of the leading causes of no boiler power is a blown fuse. 

This can occur if the boiler is old or there is a power cut. Unless the fuse is functioning properly, the boiler won’t turn on. 

A gas engineer will need to examine the boiler and replace the fuse if necessary; followed by a test to check whether the issue has been successfully resolved.

Fuse box tripping

The RCB (fuse box) keeps the electricity running through your home. However, one small fault from the box can cause a boiler power shortage.

 It would be wise to check your fuse to make sure that all of the switches are facing the right way.

If just one switch is down, you’ll get no power, but a simple flick upwards should restore power to your boiler.

Boiler losing power?

Let our experts take care of it with an emergency repair

If your boiler is constantly cutting out of power, you may need to seek help from an engineer.

Our Boiler Plan Gas Safe experts will point out any work that needs to be carried out, they'll also provide a fixed price repair quote.

With our 24 hour emergency repair and 95% first time fix rate, we’ll have your heating up and running again in no time.

Book a Boiler Repair

Circuit board failure

Boiler not firing up? it may be down to a circuit board failure (PCB). 

The PCB controls the different parts of the boiler; including the thermostat, timer and pump to keep your boiler in good working order.

A professional engineer will usually run a full test to find out the main issue and whether or not the power shortage is linked to a glitch with the PCB.

It may be the case that the PCB will need to be repaired or replaced.

Power light failure

You may be given the impression that there is no power in your boiler, but it could be as simple as an LED failure. 

This isn’t usually linked to any sort of electrical error, and still means your boiler is working as normal. 

Although it is not a common fault, it is still a problem that should be investigated. A gas engineer will be able to carry out a simple test to determine if this is the cause.

Do I need a new boiler?

You may be considering whether to repair or replace your boiler - and if you’re no expert, you may be unsure on the best option. If you’re in any doubt, you should get in touch with a boiler repair professional to give you an idea of whether or not your boiler can be replaced.

new boiler is not always necessary and the relevant repairs will ensure your existing boiler is in good working order. 

It may also be a good idea to learn more about resetting a boiler which could help solve the problem.

If no cause is discovered or the same problems are recurring frequently, a replacement may be suggested. A local engineer can advise on the next steps.

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