Glow-worm Boiler Surrey
Energy, Flexicom, Betacom · Gas Safe Registered · All Surrey Areas
Glow-worm Boiler Specialists
Glow-worm is part of the Vaillant Group — sharing many components and engineering principles with Vaillant boilers while being sold at a more competitive price point. This means Glow-worm boilers offer very good build quality and reliability, and our engineers who are trained on Vaillant are equally comfortable working on Glow-worm systems.
Common Glow-worm Boiler Faults
- F.1 / F1 — No ignition. Faulty ignition electrode, gas valve or spark lead. Most common Glow-worm fault code.
- F.4 / F4 — NTC sensor fault. Flow or return temperature sensor failure.
- F.22 — Low water pressure. Same as Vaillant F.22 — repressurise and investigate cause.
- F.75 — Pump / pressure sensor fault. Pump failure or blocked pressure sensor.
- F.28 — Ignition lockout. Gas valve or ignition failure.
Glow-worm Models We Service
- Glow-worm Energy 18c, 25c, 30c, 35c (combi)
- Glow-worm Energy 18s, 25s, 30s (system)
- Glow-worm Ultimate 3 — 30kW, 35kW
- Glow-worm Flexicom CX — older range
- Glow-worm 30CXi, 35CXi — older condensing
📞 0800 999 1609 — Glow-worm Specialists Across Surrey · Gas Safe Registered