Ferroli Optimax 25 S Fault codes & diagnostics

18 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.

System Natural Gas 2008-2015 Discontinued
GC Number 41-267-22
Download the Ferroli Optimax 25 S manualThe official installation and service manual (PDF), the document these fault codes were read from. PDF

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Severity at a glance

Each cell = one fault code. Hover to identify.
18 Unrated
Fault codes

All 18 documented codes

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