3 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Greenstar 24i Junior
This boiler uses LED flash patterns
Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →
The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 47-311-69 | 24i Junior | 2003–2005 |
| 47-311-70 | 28i Junior | 2003–2005 |
| 47-311-71 | 24i Junior | 2003–2005 |
| 47-311-72 | 28i Junior | 2003–2005 |
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Your boiler has stopped working because it has detected a safety issue and locked itself to prevent damage.
Your boiler has stopped working because an internal safety fuse has failed, cutting off the electrical power to the system's control board.
Your boiler has stopped working because an internal electrical fuse has blown, cutting off the power needed for it to operate.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes