Ideal Icos System HE 15 Fault codes & diagnostics

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

System Natural Gas 2005-2001 Discontinued
GC Number 41-421-99
Download the Ideal Icos System HE 15 manualThe official installation and service manual (PDF), the document these fault codes were read from. PDF

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Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Severity at a glance

Each cell = one fault code. Hover to identify.
13 Unrated
Just want the most common Ideal Icos System HE 15 faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes

All 13 documented codes

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