Glow-worm Ultracom 2 30cxi Fault codes & diagnostics

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

Gas 2010-present
GC Numbers 47-019-1147-019-11
Download the Glow-worm Ultracom 2 30cxi manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

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Severity at a glance

Each cell = one fault code. Hover to identify.
33 Unrated
Versions & GC numbers

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
47-019-11 Ultracom 2 30cxi 2010–present
47-019-11 Ultracom 2 30cxi 2010–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.

Just want the most common Glow-worm Ultracom 2 30cxi faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes

All 33 documented codes

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