Encountering F1, F9, F22, or F25 fault codes on your Glow-Worm boiler may raise concerns. Understanding these codes and the appropriate steps to take can empower you to troubleshoot common issues or determine when it’s time to seek assistance from a heating engineer. In this article, we will explain the meaning behind these fault codes and offer guidance on the necessary actions.
F1 – Ignition Failure:
If your boiler has failed to ignite five times and entered ‘lock out,’ attempt a reset and call for heat. If the issue persists, inspect the condensate waste pipe to ensure it is not frozen or blocked where it connects to the drainpipe. If you find yourself frequently resetting the boiler or facing persistent operation problems, please contact us for professional assistance, as it may involve more complex issues or the replacement of certain components.
F4 – Repeated Ignition Failure:
Similar to F1, if your boiler has failed to light five times and gone into ‘lock out,’ first check if the gas has been turned off at the meter or if there is sufficient credit for prepaid meters. Verify the gas supply using your gas hob. Attempt a reset and call for heat. If problems persist, reach out to us for effective solutions.
F9 – Pressure Issues:
When the boiler detects a pressure issue, check the pressure gauge and use the filling loop controls to top up if low. Even if the pressure seems fine, a quick top-up can be beneficial, avoiding exceeding 1.5bar or entering the red zone. Sometimes, debris may be caught in the pressure sensor, necessitating cleaning it or replacement. This situation may also signal that your central heating system could benefit from a magnetic filter and, potentially, a power flush. See our blog post on Repressurising your boiler in Wokingham, Berkshire
F22 – Pressure Check and Reset:
Examine the pressure gauge and top up if necessary. Attempt a reset. If the issue persists, or you consistently encounter the F22 fault code, contact us for a thorough investigation and resolution. See our blog post on Repressurising your boiler in Wokingham, Berkshire
F25 – Heat Dispersion Challenge:
If the boiler struggles to disperse heat, check the pressure and top up if needed. Try a reset and reduce the flow target temperature to 65 degrees (lower if using a combi boiler). Contact us for further investigation, as this issue is often linked to poor flow through the heat exchanger due to pump failure, blockages in the heat exchanger or central heating system.
You can contact The Boilersmith if you’re in Wokingham Borough including, Woodley, Twyford, Wokingham, Winnersh, Earley, Lower Earley, Reading, or the surrounding areas in Berkshire for an annual boiler maintenance schedule, boiler repairs, central heating maintenance, or a quote for a new boiler. Our Gas Safe-certified heating technicians have extensive knowledge of major manufacturers, including Vaillant, Glowworm, Worcester, Viessmann, Ideal, Potterton, Baxi, and Main Gas boilers.