Introduction
Boilers are at the heart of keeping our homes warm and comfortable, but what happens when they flash an error code? Don’t panic! Error codes are designed to help identify issues quickly, and many are surprisingly easy to resolve yourself.
In this guide, we’ll walk you through common Main Boiler fault codes (for Main Heating boilers) - what they mean, how to fix them, and when it’s time to call a professional.
DIY Fixes
These codes often indicate minor issues you can handle yourself:
| Error Code | Cause | DIY Solution |
|---|---|---|
| E119 | Low water pressure | Re-pressurise the system via the filling loop. |
| E133 | Ignition or gas supply fault | Ensure the gas supply is on. Check prepayment meter if applicable. |
For step-by-step instructions, check out the Free Boiler Downloads website Main Heating Boilers - Downloadable PDF Manuals.
When to Call an Engineer
Some codes indicate complex issues that require professional expertise:
| Error Code | Cause | Action |
| E160 | Fan or fan wiring fault | Contact an engineer to diagnose and repair. |
| E168 | Undiagnosed issue | Call us to investigate and resolve the problem. |
Get in Touch:
If you encounter these issues or simply want peace of mind, we’re here to help!
👉 Call: 07930 233 455
👉 Email: team@primegasheating.com
👉 Book an in-person quote and get 10% off new boiler installations.
Stay warm and worry-free this winter! Explore our related FAQ posts and tips on boiler care.
And check out boiler offers page for an exclusive deal!
