How to Reset Baxi E55 Fault Code: Step-by-Step Guide
If your Baxi boiler is showing the E55 fault code, it means there’s a communication issue between the boiler’s printed circuit board (PCB) and one of its connected components. This can cause the system to shut down as a safety precaution. Fortunately, in many cases, Baxi E55 error issue can be reset easily. Here’s what you need to know.
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What Does the Baxi E55 Fault Code Mean?
The Baxi E55 fault code points to a PCB communication error. This typically happens when the boiler’s control board cannot properly communicate with parts like sensors, pumps, or valves. It may be caused by:
- Loose wiring connections
- Faulty PCB
- Damaged or unresponsive components
- Power supply problems
Sometimes, this error appears after a power cut or electrical surge and can be cleared with a simple reset.
How to Reset the Baxi E55 Error Code
Time needed: 5 minutes
Here’s a quick and safe way to reset your boiler if you’re seeing the E55 error code:
- Switch Off the Boiler
Turn off your boiler using the control panel. Then isolate it completely by switching it off at the main fuse spur or wall switch.
- Wait for a Few Minutes
Give your boiler at least 2–3 minutes to fully power down. This can help reset any temporary communication glitches.
- Turn the Boiler Back On
Switch the power back on at the wall or fuse spur and then turn the boiler on using the control panel.
- Reset the Boiler
Press the reset button on the boiler’s control panel (usually marked with a flame and a cross). Hold it for 3–5 seconds until the system begins to restart.
What to Do If the E55 Code Returns
If the fault code appears again shortly after resetting, this may suggest a more serious issue:
- A faulty or damaged PCB
- A broken communication cable
- Electrical issues in your home’s wiring
- A failed component connected to the board
In this case, you’ll need to contact a Gas Safe registered engineer to inspect and repair the boiler safely.
Final Thoughts
The Baxi E55 fault code can often be resolved with a simple reset, especially after a power interruption. However, if the problem persists, it may point to a deeper issue with your boiler’s electronics. Never attempt to open or repair internal boiler components yourself always rely on a certified heating engineer for expert support.
Frequently Asked Questions
The process of resetting your boiler is the same regardless of the fascia display. To reset the boiler, turn the selector switch to the R (Reset) position. Hold for at least 5 seconds and release. The fault code will be replaced with the boiler’s current temperature.
A simple boiler reset by turning the knob to RESET or holding the reset button for 3-5 seconds may resolve the issue. Regular maintenance and cleaning of the domestic hot water sensor can prevent Baxi E50 error from occurring. Professional Gas Safe registered engineers are recommended for repairs if reset attempts fail.
Is it Safe to Reset my Boiler? Don’t worry! Modern gas boilers have lots of built-in safety features. Any problems that could pose a risk to safety will prevent you from resetting the boiler.
