Book an appointment

Open now until 8pm

0203 763 2682

Gas Safe Register logo

Gas Safe Register

Gas Safe Register is the official gas registration body for the UK, Isle of Man and Guernsey, appointed by the relevant Health and Safety Authority for each area. By law all gas engineers must be on the Gas Safe Register.

Visit the Gas Safe website to verify our accreditation

Get my quote

Boiler Constantly Needs Resetting

If you find that you’re having to reset your boiler regularly, there could be a fault in your system. A fault in your boiler can cause it to not work and switch off, this is often referred to as a “lockout”.

Get your instant quote online

Price Guarantee[28]

Simply answer a few multiple choice questions about your existing boiler and we’ll give you a fixed price for a new boiler including all parts and installation[28]

Your boiler will usually display a signal that it has detected a fault on the control panel, by either a fault code or a red or green flashing light. Both signals indicate that your boiler needs checking and repairing.

Some of the most common boiler faults which could be triggering the need to reset it frequently include:

Boiler Lockout Mode

The boiler lockout mode usually occurs if either:

The boiler has overheated

An overheated boiler can be a result of the boiler not having enough water pressure which can occur for various reasons, such as a build-up of sludge in the system leading to mechanical failure, a worn pump or a substantial blockage. If your boiler becomes too hot, you should call a gas-safe engineer immediately.

The boiler is not igniting properly

Boilers can have problems igniting if:

However, if you operate your heating system by a coin meter or you pay by card then a reduction in gas flow could be causing an ignition problem. This should be easily amendable by adding credit to your meter.

Resetting your boiler

When your boiler goes into lockout mode and you’re experiencing issues such as those mentioned above, the first thing to do is try resetting your boiler.

How do I reset my boiler?

The appearance and positioning of reset buttons can vary on different boilers. To locate the reset button on your boiler, try looking for a press button that has a flame, flashing light, or a cross through it. The button is should be clearly labelled “RESET”. Refer to your boilers instruction manual if you can't find the reset button, which should include a detailed diagram of your specific model.

Only press the reset button once; repeatedly pressing the button may damage the control panel, leading to an expensive repair.

Hold the reset button for 3 seconds before releasing. If your boiler displays a flashing green light, it should have successfully reset. If a fault code is still showing or a red light is continuing to flash, you'll need to contact a gas-safe engineer for further assistance with diagnosing the problem.

If resetting your boiler becomes a regular chore and you find that you're experiencing reoccurring boiler faults, it might be time to consider installing a new boiler. We are experts in new boiler installations with highly trained gas-safe engineers across the country and a range of boilers by leading manufacturers including Worcester Bosch and Ideal. What's more, we have different payment options available including finance deals.

Get in touch with us today

We’re all about the personal touch, so fill in the form below to give us an idea of where you are and one of our local advisors will give you a call back quick-sharp.

0203 763 2682

Simply fill in this form and we’ll call you straight back.

Book your free no obligation quote today.

When you submit this form, you’ll be contacted by HomeServe.

HomeServe would like to send you offers and services we think you‘ll like. If you‘d prefer NOT to receive this information, please click the options below.

Our pledge to you:

  • We promise we won’t inundate you
  • We’ll keep it relevant
  • We’ll never share your details with any third party

Read our privacy policy.

Tools icon

Service & Repairs

If you know exactly what you‘re after, call the number below

0203 805 4581

[28] Exclusions apply. See