Common Boiler Error Codes by Brand

1. Worcester Bosch Boiler Error Codes

Error Code: EA – Ignition Fault

• Cause: The boiler cannot detect a flame, possibly due to gas supply issues or a blocked burner.

• Solution:

1. Check the gas supply and ensure it is turned on.

2. Inspect the burner for blockages.

3. Reset the boiler.

If the problem persists, contact a professional engineer.

Error Code: E9 – Overheating

• Cause: The boiler has overheated, often due to a faulty pump or flow issues.

• Solution:

1. Open all radiator valves.

2. Bleed the radiators to remove trapped air.

3. Call a qualified engineer if the issue continues.

2. Vaillant Boiler Error Codes

Error Code: F22 – Low Water Pressure

• Cause: The boiler system lacks sufficient water pressure.

• Solution:

1. Check the pressure gauge; it should read between 1-1.5 bar.

2. Repressurise the system using the filling loop.

3. If the issue persists, check for leaks or call an expert.

Error Code: F28 – Ignition Failure

• Cause: No gas supply or a problem with the gas valve.

• Solution:

1. Confirm the gas supply is active.

2. Reset the boiler and restart.

3. Contact a Gas Safe engineer if necessary.

3. Ideal Boiler Error Codes

Error Code: L2 – Flame Loss

• Cause: The flame has gone out during operation.

• Solution:

1. Ensure the gas supply is connected and operational.

2. Reset the boiler.

3. Call a professional if the fault persists.

Error Code: F1 – Low Pressure

• Cause: The boiler pressure has dropped below the required level.

• Solution:

1. Use the filling loop to increase pressure to 1-1.5 bar.

2. Check for leaks in the system.

4. Baxi Boiler Error Codes

Error Code: E133 – Gas Supply Issue

• Cause: No gas supply or a frozen condensate pipe.

• Solution:

1. Check the gas meter and ensure the supply is active.

2. Thaw the condensate pipe if it’s frozen.

3. Contact an engineer if necessary.

Error Code: E119 – Low System Pressure

• Cause: Insufficient water pressure in the boiler.

• Solution:

1. Repressurise the boiler using the filling loop.

2. Inspect the system for any leaks.

Why Choose RCD Heating?

• Experienced Professionals: Over 30 years of expertise in gas and heating systems.

• Gas Safe Registered: Licence No. 504471 ensures your safety.

• Quick Response: Emergency services available.

• Customer-Focused: Offering interest-free installation options for up to 12 months.

If you encounter a boiler issue that you can’t fix, don’t hesitate to reach out to RCD Heatingfor fast and reliable assistance.

We’re here to keep your home warm and safe!

At RCD Heating (UK) Limited, we understand how frustrating boiler issues can be. That’s why we’ve compiled a guide to common error codes from popular boiler brands and practical solutions to get your heating back on track.

If the issue persists, our Gas Safe registered engineers are ready to assist you. Contact us today!

About Us

RCD Heating (UK) Limited
Company Number: 08340472
Gas Safe Licence No: 504471
106 Crawford Gardens, London, England, N13 5TE

📞 Contact Numbers:
+44 7356 052535 | +44 7949 058551
📧 Email: info@rcdheating.co.uk