Baxi E119 Fault Code – How to Fix Low Water Pressure Problem
If your Baxi boiler is showing the E119 fault code, it means the water pressure is too low. This can stop your boiler from working properly, leaving you without heating or hot water. Luckily, this is a common issue and is usually easy to fix at home. In this guide, we’ll explain what this error (Baxi E119 Error Code) means, why it happens, and how to fix it safely.
Table of contents
What Does the Baxi E119 Fault Code Mean?
The Baxi E119 Error code appears when your boiler’s water pressure drops below the safe level. Boilers need a certain amount of water pressure to work properly. If the pressure is too low, the boiler shuts down to protect itself.
If your boiler is more than 10 years old and you keep getting pressure problems, it might be a sign that you need a new boiler for better performance and reliability.
What Causes Low Pressure (Baxi E119 Fault Code) in a Baxi Boiler?
1. Bleeding Radiators
When you bleed your radiators to release trapped air, it also allows some water to escape from the system. This can lead to a drop in boiler pressure. After bleeding radiators, it’s important to check and top up the pressure if needed.
2. Leaks in the System
Even small leaks in your central heating pipes, radiators, or within the boiler itself can cause pressure to fall over time. These leaks might not always be visible, so it’s important to check for damp spots or call a Gas Safe engineer if you suspect a hidden leak.
3. Gradual Pressure Loss Over Time
All heating systems lose a small amount of pressure naturally. This is usually due to tiny air bubbles escaping or the system settling. It’s normal to need a pressure top-up once or twice a year.
If you need to top up the pressure often, there may be a leak that needs checking by a professional.
How to Fix the Baxi E119 Error Code
Time needed: 6 minutes
You can try to fix this error by repressurizing your boiler. Here’s how:
- Switch Off and Let the Boiler Cool
Switch off the boiler and allow it to cool before performing any checks or maintenance to ensure safety.
- Find the filling loop
it’s a silver flexible pipe under the boiler, with two small valves.
- Check Filling Loop Connections
Make sure the filling loop is connected at both ends and the caps are secure.
- Open both valves slowly
You should hear water entering the system.
- Watch the pressure gauge
When it reaches 1 to 1.5 bar, close the valves.
- Check Boiler Operation
Turn the boiler back on and check if it’s working properly.
Tip: Always monitor the pressure for a few days after topping up. If it keeps dropping, there might be a leak.
Using the Baxi Easy-Fill Filling Link
Some Baxi models come with an Easy-Fill link, which makes topping up even simpler:
- Look underneath the boiler for a small green lever (usually on the right).
- Push the lever down to let water into the system.
- Watch the pressure gauge rise.
- Release the lever once the gauge needle is in the green zone (around 1 bar).
This method is quick and doesn’t require removing the filling loop.
When to Call a Gas Safe Engineer
While topping up the pressure is something you can do yourself, some situations need expert help. Call a Gas Safe registered engineer if:
- The E119 error keeps coming back after topping up
- You suspect a leak in the system
- Your boiler shows other error codes
- Water pressure drops quickly or overnight
- You’re unsure how to repressurize your system safely
Only a Gas Safe engineer can legally and safely fix gas boilers in the UK. They’ll check for leaks, damaged parts, or signs that your boiler needs replacing.
Final Thoughts
The Baxi E119 error code is one of the most common issues with Baxi boilers and often just means your boiler needs more water pressure. You can usually fix it yourself by topping up the system. But if the problem keeps coming back or you’re unsure what to do, it’s always best to call a qualified engineer. Regular maintenance can also help prevent issues in the future.
Frequently Asked Questions
Boilers must be pressurized to maintain the proper pressure levels within the system. Without the correct pressure, the boiler cannot heat the water to the desired temperature and may compromise its safety features.
Additionally, low pressure can cause water leakage and other damage to the system.
Boilers typically need repressurizing annually. If your boiler loses pressure more frequently, it could indicate a more serious problem. In such cases, seek professional advice.
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. At this point on a neon indicator boiler model, the flame failure light will stop flashing and will be replaced with the burner light.