1 fault code with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Promax Combi HE Plus
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. 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 |
|---|---|---|
| 47-393-11 | Performa 24 Eco HE | 2004–2012 |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
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Your boiler has detected an internal system error and safely shut down to prevent potential damage.
BoilerFaultCodes