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potterton boiler e125 fault

Having trouble with your Potterton boiler showing the E125 fault code? Don't worry, we've got you covered!


If you own a Potterton boiler and are experiencing the dreaded E125 fault code, don’t worry! This common issue is usually easy to fix with a few simple troubleshooting steps. In this article, we will guide you through the process of identifying and resolving the Potterton Boiler E125 fault, so you can get your heating system up and running again in no time.

Troubleshooting the Potterton Boiler E125 Fault

When you see the E125 fault code on your Potterton boiler, it means there is a problem with the flow temperature sensor. The first step in troubleshooting this issue is to check if there is any air trapped in the system. Bleeding the radiators and ensuring there are no blockages in the pipes can help resolve this issue. If the problem persists, you may need to reset the boiler by turning it off and on again. This simple step can often clear the fault code and restore normal operation.

If resetting the boiler does not solve the E125 fault, the next step is to check the wiring connections to the flow temperature sensor. Loose or damaged wires can cause the sensor to malfunction, triggering the error code. Make sure all connections are secure and there are no visible signs of damage. If necessary, consult the boiler manual for guidance on how to properly reconnect the wires. Once the connections are secure, reset the boiler again and see if the fault code clears.

If you have tried all the above steps and the E125 fault code is still appearing on your Potterton boiler, it may be time to call a professional technician for further assistance. They will have the expertise and tools necessary to diagnose and repair any more complex issues that may be causing the fault. Don’t hesitate to reach out for help if needed, as a properly functioning boiler is essential for keeping your home warm and comfortable during the colder months.


In conclusion, the Potterton Boiler E125 fault may seem daunting at first, but with a little troubleshooting and some basic fixes, you can usually resolve the issue yourself. Remember to stay calm and follow the steps outlined in this article to get your boiler back on track. And if all else fails, don’t hesitate to seek professional help. With the right guidance and support, you’ll have your heating system running smoothly again in no time.

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