BoilerFaultCodesAlpha E06 Fault Code
The Alpha E06 fault code means: your boiler is struggling to accurately measure the temperature of the hot water it is producing, which will likely prevent you from having a consistent supply of hot water.. It appears on 29 Alpha models in our database.
Technical description: DHW NTC sensor fault
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gas Safe Register →Alpha models that show the E06 fault code
Click a model for the full fault code list and model-specific repair notes.
- C25 Xtraflame Repair: £120-200
- CB24 Repair: £120-200
- CB28 Repair: £120-200
- Cb50 Repair: £120-200
- Cd13r Repair: £120-200
- CD24 Repair: £120-180
- Cd25 Repair: £90-160
- CD28 Repair: £120-180
- E-Tec Repair: £120-200
- E-Tec 24 Repair: £120-200
- E-Tec 28 Repair: £120-200
- E-Tec 33 Repair: £120-200
- E-Tec Plus Repair: £120-200
- E-Tec Plus 10 / 18 Repair: £90-160
- E-Tec Plus 24 Repair: £120-200
- E-Tec Plus 28 Repair: £120-200
- E-Tec Plus 33 Repair: £120-200
- E-Tec R Repair: £120-200
- Evoke Repair: £120-180
- Evoke 10 / 18 Repair: £90-160
- H25 Xtraflame Repair: £120-200
- Intec 28GS Repair: £120-200
- Intec 40GS2 Repair: £120-200
- Intec 50CS Repair: £120-200
- Intec2 25 28XE Repair: £120-200
- Intec2 30SE Repair: £120-200
- Pro Tec 24 Repair: £120-200
- Pro Tec Plus Repair: £120-200
- SY Repair: £120-180
Source
Alpha E06 fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026