Skip to content 
Table of Contents
If a boiler detects a fault, it will automatically shut down as a safety measure (also known as ‘lockout’). In terms of safety, this is a great way to prevent unnecessary damage to your central heating system, although it can be frustrating not knowing what to do next most importantly, you need to know how to reset a boiler to get your heat back with hot water. If you experience problems with your boiler, you can always contact a heating professional. A heating engineer can assure you that your boiler is operating safely.
Continue reading to learn how to reset the boiler and discover the most common reasons it shuts down.
When to Reset Your Boiler
Modern boilers have a shutdown protection when there is an issue. This makes modern boilers much safer, but you can’t leave central heating or hot water.
Common boiler problems that cause lockups include:
- A fault in the system
- Unsafe conditions, such as harmful gases
You will know your boiler has shut down when an error code appears on the display screen.
Then, once the problem is fixed, you will need to restart the boiler.
What is a Boiler Lockout?
Boiler lockout is the term manufacturers use to describe a closed boiler. Lockout is a safety feature, so if your boiler detects a fault, the lockout condition prevents further damage. Several factors can cause a shutdown, and the fault shown on the boiler should indicate the possible cause.
How to Reset a Boiler in 3 Easy Steps
Refer to Your Boiler Manual
First, you need to find your boiler’s reset button. It may be obvious, but the best way to find out is to look in the book. It will also tell you how to perform a manual reset for your specific boiler model.
The reset button on most boilers usually has a flame or a cross on it, clearly labelled “reset”.
Push the Reset Button for 10 Seconds
Typically, you push your boiler’s reset button and hold it for 10 seconds. You only have to do this once, then wait 2-3 minutes and reset the boiler. If your reset was successful, the flames glow in the boiler. This usually means flashing lights and some error codes can stop.
Call a Professional
If you have tried to reset your boiler three times and it still doesn’t work, your boiler is at fault.
If you have to reset your boiler regularly, you should call a gas engineer to assess what could be wrong and what the best course of action is. If the problem continues to persist, then you should consider replacing your boiler. The government of the UK is considering this situation and presents an alternative, namely a free boiler grant under the ECO4 scheme, which was invented to replace free boiler through grants. However, there are some eligibility criteria for a free boiler grant that must be fulfilled to avail of this opportunity.
Currently, not all boilers can be reset equally. Some models only require a quick press of the reset button, while others require you to hold it for several seconds. The best way to learn how to reset a boiler is to refer to the manual.
Here’s a step by step guide to each boiler model and how to reset it:
How to Reset a Baxi Boiler
isn’t working, check out our Baxi Problems and Repair Advice.
Baxi Boiler | How to Reset |
EcoBlue Heat | Push and hold the reset button for 5 seconds |
200, 400 | Press and hold the reset button for 5 seconds |
600, 800 | Press and hold the reset button for 1-3 seconds |
Platinum, Platinum+, Duo-Tec | Turn, the selector switch to the R, hold for 5 seconds then let it go |
Once the fault is corrected, the boiler must be restarted. Learn common model boiler problems and repair tips.
How to Reset Ideal Boilers
Vaillant ecoTEC boilers have a fire symbol via a reset button with a cross through it. Their ecoFIT Pure range of boilers use the same icon, but this one is not on it;
Vaillant Boiler | How to Reset |
ecoFIT Pure | Press and hold the reset button for 5 seconds |
ecoTEC Plus | Press and hold the reset button for 1 second |
Only attempt to reset your Vaillant boiler once any problems have been corrected.
How to reset a Worcester boiler
Worcester Boiler | How to Reset |
CDi Classic | Press and hold the reset button for 3 seconds |
CDi Compact | Press the reset button |
Greenstar i | Quick press of the reset button |
Greenstar Si | Press the reset button |
Greenstar Ri | Turn the circular central heating control to the ‘reset’ position and hold for 5 seconds |
Greenstar i Junior | Hold the reset button for 5 seconds |
Greenstar 2000 | Press and hold the up and down keys at the same time until ‘reset’ appears on the display |
Greenstar 2000 | Hold the up and down buttons at the same time until error symbols disappear |
Common Reasons Boilers Stop Working
There are many mistakes that can cause your boilers to stop working. If you have a modern boiler, your boiler will most likely display an error code when it goes into lock-up. If you want to know what the rules are, you can consult your boiler manual. The documentation will contain information about the errors represented by each code.
Common faults include:
- Extreme pressure
- Faulty thermostat
- Faulty pump
- Leaking system
- Blocked plate heat exchanger
- Miscellaneous components old or worn-out
A build-up of residues in the pipes
Apart from faults in the boiler or heating system, another perhaps overlooked reason why you may need to reset your boiler now and again can be due to power outages If you cut the power, it will shut down or reset any appliance in your home that depends on electricity. If this has happened, all you have to do is reset your boiler when the power is restored.
Reaching Net Zero Emissions!
Conclusion
How to Reset a boiler means a lot since one always has to maintain a good home. Remember, regular maintenance and quick troubleshooting will help you avoid waking up to a cold house or encountering repair costs at odd times.
Frequently Asked Questions
What should I do if my boiler keeps needing resets?
If your boiler frequently requires resetting, it may indicate an underlying issue. Arrange for someone to diagnose and fix the problem.
How often should I reset my boiler?
Only reset your boiler when necessary, typically when it displays error codes or malfunctions. Avoid frequent resets by maintaining your boiler regularly.
Can resetting a boiler damage it?
Properly resetting a boiler according to manufacturer guidelines shouldn’t cause damage. However, incorrect procedures or ignoring underlying issues could lead to problems.
Is it safe to reset a boiler myself?
Basic resets like how to reset a boiler can often be done safely by homeowners. For complex issues or if unsure, consult a qualified technician.
