Potterton Promax HE Fault codes & diagnostics

No fault codes listed yet: we only list codes read from this boiler's own manual.

Regular Natural Gas 15-24 kW 2005 onwards Discontinued

Replaced by: Promax SL

Choose your boiler type

The Promax HE range comes in 5 types

Pick the one you have. The fault codes, GC numbers and manual differ by type.

12 HE Plus 20 codes · 1 GC number 18 HE Plus 20 codes · 1 GC number 15 HE 15 codes · 1 GC number SL 15 20 codes · 1 GC number SL 24 5 codes · 1 GC number

Each model has its own manual A family spans several manuals, one per model or generation. Pick your model above and its page has the manual its fault codes were read from.

No fault codes for this model yet

We haven't got the Potterton Promax HE manual yet. 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.