Common Boiler Fault Codes
Seeing error messages on your boiler? Our guide to the Common Boiler Fault Codes explains what they mean and how to spot early signs of trouble
Top Fault Codes and Their Meanings
When your heating system shows error messages, it can be confusing. This guide to the Common Boiler Fault Codes will break down the Top Fault Codes and Their Meanings, helping you understand what’s wrong and when to seek professional help.
- F22 – Low water pressure: You may need to top up your boiler.
- F75 – Faulty pump or pressure sensor: Likely needs a professional diagnosis.
- E119 – System pressure too low: Often due to a leak or air in the system.
- L2 – Ignition lockout: Could be due to gas supply or spark issues.
- EA – Flame detection error: Usually a sensor or gas issue.
Should You Try Fixing It Yourself?
Some issues, like topping up water pressure or resetting the boiler can be done safely, but most fault codes should be assessed by a qualified heating engineer.
Let Us Decode the Problem for You
Call Brightside Heating for expert diagnostics and repair — we’ve seen every code and know exactly how to fix it.
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