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Worcester boilers
Specifications, fault codes and service routines for popular Worcester gas boilers on BoilerTag.
- 12i System (LPG)
- 12i System (Natural Gas)
- 15i System (LPG)
- 15i System (Natural Gas)
- 18i System (LPG)
- 18i System (Natural Gas)
- 24i System (LPG)
- 24i System (Natural Gas)
- 28CDi Compact ErP
- 29CDi Classic ErP
- 32CDi Compact ErP
- 34CDi Classic ErP
- 36CDi Compact ErP
- 38CDi Classic ErP
- 42CDi Classic ErP
- Greenstar 25i ErP
- Greenstar 30i ErP
Real-world Worcester fault diagnostics
Diagnostic checklists from engineer-submitted Worcester faults, with step-by-step checks and safety notes.
- Greenstar →
Frequent pressure drops on a Worcester Bosch Greenstar boiler typically indicate a leak within the sealed system, a faulty pressure relief…
- Greenstar Cdi →
The Worcester Greenstar CDi is a condensing combination boiler.
- Greenstar 12i System — fault Heat exchanger overheat →
The Worcester Greenstar 12i System displaying a "Heat exchanger overheat" fault code indicates the boiler's safety systems have activated…
- Greenstar 12i System — fault Ignition lockout →
The Worcester Greenstar 12i System displaying an 'Ignition lockout' fault indicates that the boiler has attempted to ignite but failed to…