Glow-worm Flexicom fault F1

What it means

Boiler failed to achieve ignition after 5 attempts, resulting in lockout.

Likely causes

1. Air in the gas supply line
2. Gas tap is closed
3. Gas valve connector is loose, unconnected, faulty, or wires are trapped
4. Ignitor connectors are loose, unconnected, faulty, trapped
5. Faulty ignitor
6. Low gas inlet pressure
7. Incorrect gas valve adjustment
8. Electrode ignition leads loose, unconnected, faulty, trapped
9. Electrode broken, defective, or position incorrect
10. Air inlet blocked, flue inlet blocked, flue duct leaking
11. Earthing connection loose, disconnected
12. Condensate blocked
13. Flue components not correctly assembled, fixed or supported
14. Flue or flue terminal obstructed
15. Faulty seals around appliance burner, internal flue seals, door and case seals
16. Incorrect gas type or supply pressure/rate not checked prior to commissioning
17. Analyser not zeroed/calibrated correctly in fresh air prior to use

Where to start

1. Remove front casing door and lower control box before initial lighting
2. Initially run the appliance pump to ensure all air has been vented from system (observe auto air vent operation if possible)
3. Check that all external controls are calling for heat