Ferroli Boiler Fault Codes

1,014 fault codes across 42 Ferroli boiler models — explained in plain English.

Italian heating manufacturer with a strong UK presence. Known for competitively priced boilers.

1,014 fault codes
42 models documented
8 currently sold
34 legacy models
Just want the most common Ferroli problems?
The top 8 faults across the whole Ferroli range — causes, DIY checks, repair costs.
Most serious

High-severity Ferroli fault codes

A01
Your boiler has failed to light the flame, which means you currently have no heating or hot water.
Bluehelix Tech
 A02
Your boiler detects a flame when it should be turned off, which prevents the system from starting up safely.
Bluehelix Tech
 A05
Your boiler has stopped working because the internal fan, which safely removes waste gases, is not spinning at the correct speed.
Bluehelix Tech
 A06
Your boiler is failing to stay lit after it tries to start up, meaning it cannot provide you with heating or hot water.
Bluehelix Tech
 F14
Your boiler has shut down because the exhaust fumes have become dangerously hot, which could indicate a blockage or a heat exchanger problem.
Bluehelix Tech
All models

42 Ferroli boiler models

Bluehelix Tech
CombiSystem Discontinued
44 fault codes · 2013-2018
Modena HE
SystemCombi Discontinued
29 fault codes · 2012-2016
Modena F
Combi Discontinued
14 fault codes · 2006-2015
i25
Combi
5 fault codes · 2017 onwards
i29
Combi
5 fault codes · 2017 onwards
DOMINAplus F24D
Combi Discontinued
27 fault codes
DOMINAplus F28D
Combi Discontinued
24 fault codes
Sigma
Regular Discontinued
8 fault codes
Optimax
CombiSystem Discontinued
48 fault codes · 2008-2015
Domiproject
Combi Discontinued
42 fault codes · 2006-2016
Falcon
Combi Discontinued
24 fault codes · 2007-2012
Arena
Combi Discontinued
80 fault codes
Domi Compact
Combi Discontinued
11 fault codes · 2006-2012
Tempra
Combi Discontinued
9 fault codes · 2005-2010
Econcept 100
System Discontinued
7 fault codes
Arena 30A
System Discontinued
31 fault codes
Domina 102
Combi Discontinued
28 fault codes · 2000-2005
F 30 B
Combi Discontinued
14 fault codes
F24
Combi Discontinued
10 fault codes
Hawk II
Combi Discontinued
11 fault codes · 2013-2018
Maxima 35 S
System
23 fault codes · 2018-present
Optima 201
Combi Discontinued
93 fault codes · 2006-2010
Sigma 40 FF
Combi Discontinued
10 fault codes
Tempra 12 18
Regular Discontinued
7 fault codes
Xignal
Combi Discontinued
14 fault codes
Combi 77 FF Popular
Combi Discontinued
9 fault codes · 1994-2000
Energy Top B
System Discontinued
20 fault codes
Pegasus 67 107 2S
Regular Discontinued
3 fault codes
Atlas A
Regular Discontinued
1 fault codes · 2008-2016
Atlas D
Regular Discontinued
9 fault codes
Extrema C
Combi Discontinued
25 fault codes
F24b
Combi Discontinued
9 fault codes
Force W
System
28 fault codes · 2019-present
Leb TS
Electric Discontinued
22 fault codes
Arena 30 C
Combi Discontinued
33 fault codes
Bluehelix Pro RRT
System
44 fault codes · 2019-present
Bluehelix Tech RRT 24C
Combi
54 fault codes · 2018-present
Optimax 25 C
Combi Discontinued
49 fault codes
Optimax HE 31 C
CombiSystem Discontinued
6 fault codes · 2008-2015
Optimax HE Plus
CombiSystem Discontinued
4 fault codes · 2009-2017
Bluehelix HiTech RRT
Combi
36 fault codes · 2022-present
Bluehelix Tech RRT
Combi
44 fault codes · 2018-present
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