Biasi Garda Fault codes & diagnostics

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

Combi Gas 2003 onwards Discontinued

GC Number 47-970-22

Download the Biasi Garda manual The official installation & service manual (PDF) — the exact document these fault codes were verified against. PDF

The fault code is already on your display

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

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
47-970-22	Garda M90F. 32S	2003–2007

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 Biasi Garda faults?

The top 6 problems in plain English — with causes, DIY checks and repair costs.

Fault codes

All 4 documented codes

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