BoilerFaultCodes Neon I3
Your boiler is receiving power from the mains electricity and is operating normally.
Ideal Optimum 001 Fault codes & diagnostics
2 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Combi Natural Gas 24 kW 2000-2005 Discontinued
Replaced by: Isar HE
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Fault codes
All 2 documented codes
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