How to Reset the Baxi E28 Fault Code: A Step-by-Step Guide
When your Baxi boiler displays the E28 fault code, it usually means there’s a problem with the flue thermistor or a frozen condensate pipe. While some causes require professional attention, you can try resetting the boiler after resolving the issue. In this post, we’ll walk you through how to safely reset the Baxi E28 fault code and when to call in a Gas Safe engineer.
Table of contents
Before You Reset: Fix the Root Cause
It’s important to understand that resetting the boiler won’t fix the E28 error unless the issue has already been resolved. Here are the two most common causes of the E28 fault code:
- Frozen condensate pipe – Common in winter, this can block the boiler’s drainage system.
- Faulty flue thermistor – If this sensor fails, your boiler won’t get the right temperature readings and will lock out.
How to Reset a Baxi Boiler (After Fixing the Issue)
Time needed: 5 minutes
Once you’ve addressed any obvious problems, follow these steps to reset your Baxi boiler:
- Turn Off the Boiler
Use the boiler’s control knob or switch to turn off the system and wait for a few seconds.
- Locate the Reset Button
On most Baxi models, the reset button is located on the front control panel. Look for a button marked with a symbol or flame icon with a cross through it.
- Press and Hold the Reset Button
Press the button and hold it for about 5 seconds until you hear the boiler attempt to restart. The display should clear or change if successful.
- Wait and Observe
Once reset, your boiler should begin working again. If the E28 error remains or reappears, do not keep resetting – this indicates a deeper issue that needs expert help.
When to Call a Professional
If the Baxi E28 fault code continues to appear after a reset, you might be dealing with:
- A damaged flue thermistor
- Wiring faults or control board problems
- Internal issues that require diagnostics
In these cases, it’s best to contact a Gas Safe registered engineer to inspect and repair your boiler safely.
Conclusion
Resetting your Baxi boiler can sometimes clear the E28 fault code, but only after fixing the underlying problem, like a frozen condensate pipe or a blocked flue. Never ignore recurring error codes – they’re your boiler’s way of preventing further damage. If the issue persists after a reset, professional support is the safest and most effective solution.
Frequently Asked Questions
If you have experienced an E28 error, you can reset your Baxi boiler by turning it off and on again. To do this, you need to turn off the boiler at the mains, wait for a few seconds, and then turn it back on. This should reset the boiler and clear the error code.
A boiler reset control has two temperature sensors – one outside the house and one in the boiler water. As the outdoor temperature goes up and down, the control adjusts the water temperature setting to the lowest setting that is meeting the house heating demand.
The E131 error code indicates that the flue temperature has exceeded safe limits. This causes the boiler to shut down to prevent damage. One common cause is a power cut, which can disturb the system’s sensors and cause it to enter lockout mode.. Know more about Baxi E131 error code.
