BoilerFaultCodesIdeal Optimum 001 Fault codes & diagnostics
The manual for this boiler has no fault code table.
Replaced by: Isar HE
Which version do you have?
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 |
|---|---|---|
| 41-421-70 | HE 9 | 2005–present |
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.
No fault code table in its manual
We've read the 2 manuals we hold for the Ideal Optimum 001, and none has a fault code table, so there are no codes to list. We don't fill the gap with codes from a similar boiler, because the same code can mean something different on another model. The fault code table in the installation manual is the one to trust.