What is Baxi E110 Fault Code & How to fix It?
If your Baxi boiler is showing the E110 fault code, it means your boiler is overheating and has shut down to keep you safe. This can be a big problem especially in winter when you need heating and hot water. But don’t worry. This guide will explain what the Baxi E110 Error Code, what causes it, how to fix it, and when to call a professional.
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What Does the Baxi E110 Fault Code Mean?
The Baxi E110 Fault Code means your boiler has overheated. When this happens, the boiler turns off automatically to stop damage and keep you safe.
Common Signs:
- The boiler stops working and shows the E110 error.
- No hot water or central heating.
- Strange sounds like banging or gurgling from the boiler.
What Causes the Baxi E110 Error Code?
Here are the most common reasons for Baxi E110 Fault Code and makes your boiler may overheat:
Circulation Problems
When water can’t move properly through the heating system, the boiler may overheat. This often happens due to a faulty pump or a malfunctioning diverter valve motor. These components help push water around the system, and if they fail, water flow is reduced or stopped.
Blockages
Any blockage in the system can lead to overheating. This might include a clogged radiator, restricted pipework, or a blocked main heat exchanger. When water can’t flow freely, heat builds up and triggers the E110 error.
Faulty Temperature Sensors
Sometimes, the boiler might not actually be overheating, but a faulty temperature sensor gives the wrong reading. This can cause the system to shut down and show an E110 error, even though the actual temperature is normal.
Air in the System
Air trapped in the heating system can create airlocks. These gaps interrupt the smooth flow of water, leading to overheating in certain parts of the boiler. Bleeding the radiators can often help remove this trapped air. This displays as Baxi E110 Fault Code.
Other Issues
Occasionally, problems like a bulkhead valve being left shut or installation mistakes can also cause poor circulation and overheating. See if your
How to Fix the Baxi E110 Fault Code
Time needed: 10 minutes
If your Baxi boiler is showing the E110 error, it usually means the system is overheating. Here are some simple steps to troubleshoot and fix the issue:
- Reset the Boiler
Start with reset the boiler. This may clear the error code if the issue was temporary. Follow your boiler manual for the correct reset procedure. If the code returns, move on to further checks.
- Check the Pump
Make sure the pump is running properly. If it’s stuck or faulty, water won’t circulate correctly, which can lead to overheating.
- Inspect the Main Heat Exchanger
Look for any blockages in the main heat exchanger. A blocked exchanger can restrict water flow and cause the boiler to overheat.
- Test the NTC Sensor
A faulty NTC (temperature) sensor can send incorrect signals to the boiler, making it think it’s overheating when it’s not. Replacing the sensor may resolve the error.
- Bleed the Radiators
If there’s trapped air in your heating system, it can create airlocks that block water flow. Bleeding the radiators helps release this air and restore circulation.
- Contact a Professional
If you’re unsure or the problem continues, it’s best to call a Gas Safe registered engineer. They can safely inspect and repair your boiler.
When to Call a Gas Safe Engineer
You should call a Gas Safe registered engineer if:
- You’ve tried resetting and checking pressure, but the fault keeps coming back
- The boiler makes loud noises or leaks water
- You suspect problems with gas supply or internal parts
- You’re unsure about what to do next
A professional engineer can safely inspect and repair your boiler to make sure everything runs smoothly.
Frequently Asked Questions on Baxi E110 Fault Code
If you’re comfortable with basic checks like bleeding radiators or topping up water pressure, you may not need help right away. But if the problem persists or involves internal parts like the pump or sensor, it’s best to call a Gas Safe engineer.
Not usually. It’s a safety feature that helps protect your boiler. However, if it keeps happening, it could point to an underlying problem that needs professional attention.
No. The boiler will not operate with the E110 error showing. You’ll need to fix the overheat issue before it will restart.
Low pressure can be caused by a water leak, recently bled radiators, or a faulty pressure relief valve. It might also drop over time due to natural pressure loss in the system.