Worcester Bosch Fault Codes
Common Worcester Bosch Faults
• EA – No flame detected; check gas supply and ignition.
• E9 – Overheating or heat exchanger fault.
• A1 – Low system pressure; check and repressurize.
• C6 – Fan fault or airflow issue.
• D1 – Sensor fault; may require replacement.
➡ Solution: Try resetting the boiler. If the problem persists, it may require a qualified engineer.
Vaillant Fault Codes
Common Vaillant Faults
• F22 – Low water pressure; repressurise the system.
• F27 – Incorrect flame detection; could be due to gas valve issues.
• F29 – No flame detected; check gas supply.
• F75 – Water pressure sensor or pump failure.
• F28 – Ignition failure; may require professional repair.
➡ Solution: For minor issues like low pressure, top up the system. For ignition and sensor faults, professional servicing is advised.
Ideal Fault Codes
Common Ideal Faults
• F1 – Low water pressure; check and top up.
• F2 – Flame loss; check gas supply and ignition.
• F3 – Fan fault; may require replacement.
• F4 – Flow temperature sensor fault.
• L2 – Flame lockout; needs resetting.
➡ Solution: Try resetting the boiler and checking pressure. If the issue remains, seek professional assistance.
Baxi Fault Codes
Common Baxi Faults
• E119 – Low water pressure; repressurise.
• E133 – Ignition failure; check gas supply.
• E168 – Electrical fault; may require resetting.
• E125 – Circulation fault; check pump and system flow.
• E160 – Fan fault; could indicate a replacement is needed.
➡ Solution: Simple fixes like repressurizing can be done at home. However, electrical and ignition faults need an engineer.
Glow-worm Fault Codes
Common Glow-worm Faults
• F1 – Ignition failure; check gas supply.
• F9 – Water pressure sensor fault.
• F22 – Low water pressure; check gauge and top up.
• F28 – No ignition detected; could be a gas valve or electrode issue.
• F29 – Flame failure; may need a professional check.
➡ Solution: Resetting the boiler may help, but persistent issues require professional diagnosis.
Need Help With a Boiler Fault
Need Help With a Boiler Fault?
If your boiler is showing any of these fault codes and you’re unsure how to fix it, we can help. Our experienced gas engineers specialise in diagnosing and repairing all major boiler brands.
Call us today on 02082459389
Stay warm and safe with professional boiler repair and servicing!