Biasi Boiler Fault Codes

697 fault codes across 28 Biasi boiler models — explained in plain English.

Italian manufacturer. Known for the Riva range in the UK.

697 fault codes
28 models documented
7 currently sold
21 legacy models
Just want the most common Biasi problems?
The top 8 faults across the whole Biasi range — causes, DIY checks, repair costs.
Most serious

High-severity Biasi fault codes

Li
Your boiler has detected that the water inside has become far too hot, causing it to shut down for safety purposes.
Riva Advance M96.24SM
 E01
Your boiler has failed to light the gas flame and has locked itself out for safety.
Riva Advance M96.24SM
 Lock-out
Your boiler has switched itself off because it has detected that the water inside has become dangerously hot.
Riva Advance M96.24SM
 LD1
Your boiler has lost its flame or failed to light, usually due to a lack of gas or a detection fault, meaning you have no heating or hot water.
Riva Advance M96.24SM
 LD2
Your boiler has detected an internal communication or wiring fault which is preventing it from firing up correctly.
Riva Advance M96.24SM
All models

28 Biasi boiler models

Riva Advance M96.24SM
Combi Discontinued
10 fault codes · 2004-2008
Riva Advance M96.28SM
Combi Discontinued
4 fault codes · 2004-2008
Riva Plus M296.24SM
CombiSystem Discontinued
5 fault codes · 2011 onwards
Riva Compact 24S (M90E.24S)
Combi Discontinued
36 fault codes · 2002 onwards
Riva Compact 28S (M90E.28S)
Combi Discontinued
1 fault codes · 2002 onwards
Parva 24S
System Discontinued
5 fault codes
Parva 28S
Combi Discontinued
7 fault codes · 2001 onwards
M96E
Combi Discontinued
4 fault codes · 2004-2008
Activ A
System Discontinued
42 fault codes · 2010 onwards
Advance 25C
CombiSystem
37 fault codes · 2012 onwards
Antares Combi
Combi
74 fault codes · 2019-present
Antares System
System
73 fault codes · 2020-present
Basica Combi
Combi
30 fault codes · 2019-present
Basica System 2022
System
22 fault codes · 2022-present
Dina
Combi
22 fault codes · 2024-present
Gaia
Combi Discontinued
3 fault codes · 1997-2002
Garda M90f
Combi Discontinued
8 fault codes · 2002-2007
Inovia 2020
CombiSystem Discontinued
45 fault codes · 2012 onwards
Prisma
Combi Discontinued
11 fault codes · 1998-2002
Rinnova Adaptive Combi
CombiSystem
46 fault codes · 2021-present
Riva Compact HE M96a
Combi Discontinued
47 fault codes · 2008-2012
Concept 400 20 1 Mfs
Combi Discontinued
41 fault codes · 2010 onwards
Garda HE MK2
Combi Discontinued
7 fault codes
Advance Plus 16S 25S 30S
System Discontinued
40 fault codes · 2015 onwards
Advance Plus
Combi Discontinued
28 fault codes · 2015 onwards
Riva Compact HE MK2
System Discontinued
27 fault codes · 2010-2016
Riva Plus HE
System Discontinued
6 fault codes · 2011 onwards
ActivA 18S
System Discontinued
16 fault codes · 2009 onwards
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