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how to fix f25 fault on glow worm boiler

Having trouble with your Glow Worm boiler showing f25 fault? Don't worry, we've got some simple steps to fix it!


Are you tired of dealing with the frustrating F25 fault on your Glow Worm boiler? Don’t worry, we’ve got you covered! In this article, we’ll walk you through some simple troubleshooting steps to help you say goodbye to the dreaded F25 fault for good. Say goodbye to frustration and hello to a smoothly running boiler once again!

Troubleshooting the Dreaded F25 Fault

The F25 fault on your Glow Worm boiler is often caused by a lack of water pressure. The first step in troubleshooting this issue is to check the pressure gauge on your boiler. If the pressure is too low, you can easily fix this by repressurizing the system. Simply locate the filling loop on your boiler, connect it to the mains water supply, and slowly open the valves to allow water to enter the system. Once the pressure gauge reaches the optimal range, close the valves and reset your boiler to see if the F25 fault has been resolved.

Another common cause of the F25 fault is a blockage in the condensate pipe. This pipe is responsible for carrying away condensation from your boiler, and if it becomes blocked, it can trigger the F25 fault. To fix this issue, locate the condensate pipe and check for any obstructions such as debris or ice. Clearing the blockage should be enough to resolve the F25 fault and get your boiler back up and running smoothly.

Say Goodbye to Frustration with These Easy Fixes

If repressurizing the system and clearing the condensate pipe don’t resolve the F25 fault on your Glow Worm boiler, there may be a more serious issue at play. In this case, it’s best to contact a professional heating engineer to diagnose and repair the problem. Trying to fix complex issues on your own can sometimes do more harm than good, so it’s important to know when to seek professional help.

By following these simple troubleshooting steps, you can quickly and easily fix the F25 fault on your Glow Worm boiler and say goodbye to frustration once and for all. Remember, regular maintenance and servicing of your boiler can help prevent issues like the F25 fault from occurring in the future. With a little bit of know-how and some proactive care, your boiler will be running smoothly and efficiently for years to come.


So there you have it – troubleshooting the F25 fault on your Glow Worm boiler doesn’t have to be a headache. By following these easy fixes, you can quickly get your boiler back in working order and enjoy a warm and comfortable home once again. Don’t let the F25 fault get you down – with a little bit of effort and know-how, you can tackle any boiler issue that comes your way. Cheers to a well-functioning boiler and a cozy home!

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