Alpha Boiler Fault Codes

1,279 fault codes across 43 Alpha boiler models — explained in plain English.

Italian-owned brand with UK manufacturing. Budget-friendly with wide installer base.

1,279 fault codes
43 models documented
15 currently sold
28 legacy models
Just want the most common Alpha problems?
The top 8 faults across the whole Alpha range — causes, DIY checks, repair costs.
Most serious

High-severity Alpha fault codes

16
Your boiler has stopped working because the internal fan, which safely helps the system breathe and clear exhaust gases, is not spinning correctly.
E-Tec Regular
 20
Your boiler is struggling to detect the flame needed to heat your water, even if the burner has successfully lit.
E-Tec Regular
 23
Your boiler has detected a problem with the sensor that monitors the temperature of the water returning from your radiators.
E-Tec Regular
 27
Your boiler has detected that water is not moving through the system quickly enough to prevent it from overheating.
E-Tec Regular
 29
Your boiler has detected a problem with the sensor that monitors exhaust gases, and it has shut down for safety purposes.
E-Tec Regular
All models

43 Alpha boiler models

E-Tec Regular
Regular
36 fault codes · 2019-present
E-Tec 28
Combi
37 fault codes · 2018-present
E-Tec 33
Combi
37 fault codes · 2018-present
E-Tec Plus 28
Combi
60 fault codes · 2019-present
E-Tec Plus 33
Combi
60 fault codes · 2019-present
CD24
CombiSystem Discontinued
3 fault codes · 2006-2010
CD28
CombiSystem Discontinued
9 fault codes · 2007-2012
CB24
Combi Discontinued
3 fault codes
CB28
Combi Discontinued
3 fault codes · 1997-2005
Pro Tec 24
Combi Discontinued
73 fault codes
C27
Combi Discontinued
2 fault codes
C19
Combi Discontinued
2 fault codes
CD18 / CD24
Regular Discontinued
20 fault codes · 2000-2005
E-Tec Plus
Combi
60 fault codes · 2018-present
Evoke
Combi
51 fault codes · 2017-present
Intec 50CS
Combi
62 fault codes · 2012-present
Pro Tec Plus
RegularSystem Discontinued
73 fault codes
500e
Combi Discontinued
3 fault codes
CD C
Combi Discontinued
3 fault codes · 2013-2018
Intec2 25 28XE
CombiSystem Discontinued
58 fault codes · 2012-2017
Eco
Combi Discontinued
34 fault codes · 2006-2009
Cd25
Combi Discontinued
6 fault codes · 2008-2015
Intec 40GS2
Combi Discontinued
36 fault codes
240E / 280E
Combi Discontinued
8 fault codes
240XE
Combi Discontinued
29 fault codes · 1994-2005
C23
Combi Discontinued
2 fault codes
CB50
Combi Discontinued
3 fault codes · 2007-2016
Cd13r
Regular Discontinued
2 fault codes
HETEC
Combi Discontinued
1 fault codes
Intec2 30SE
System Discontinued
55 fault codes · 2014-2018
Eco 11 13
Combi Discontinued
34 fault codes · 2013-2019
Evoke 10 / 18
System
51 fault codes · 2018-present
E-Tec Plus 10 / 18
System
56 fault codes · 2019-present
CD Systematic
System Discontinued
2 fault codes
Cd50s Cd70s
System Discontinued
34 fault codes
Intec S
System Discontinued
34 fault codes
CD S
System Discontinued
5 fault codes
SY9 24
System Discontinued
34 fault codes
E-Tec NX
Combi
30 fault codes · 2023-present
E-Tec S
System
47 fault codes · 2022-present
E-Tec Plus NX
Combi
39 fault codes · 2023-present
E-Tec NXS
System
54 fault codes · 2023-present
Evoke NX
Combi
28 fault codes · 2023-present
Boiler cover options

Avoid the next call-out bill

Monthly cover means no unexpected bills when your boiler breaks down.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.