BoilerFaultCodesAlpha 06 Fault Code
The Alpha 06 fault code means: your boiler is struggling to detect the temperature of the water being heated for your taps, which means it has stopped providing hot water to prevent overheating.. It appears on 24 Alpha models in our database.
Technical description: DHW sensor fault - DHW sensor resistance value is incorrect
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A cover plan would handle faults like 06: no call-out fees, no surprise bills.
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Alpha models that show the 06 fault code
Click a model for the full fault code list and model-specific repair notes.
- CD18 / CD24 Repair: £120-200
- Cd50s Cd70s Repair: £250-450
- E-Tec 28 Repair: £120-180
- E-Tec 33 Repair: £120-180
- E-Tec NX Repair: £90-160
- E-Tec NXS Repair: £90-160
- E-Tec Plus Repair: £120-200
- E-Tec Plus 10 / 18 Repair: £90-160
- E-Tec Plus 28 Repair: £120-200
- E-Tec Plus 33 Repair: £120-200
- E-Tec Plus NX Repair: £90-£160
- E-Tec Regular Repair: £120-250
- E-Tec S Repair: £80-120
- Eco Repair: £120-200
- Eco 11 13 Repair: £90-160
- Evoke Repair: £120-200
- Evoke 10 / 18 Repair: £90-160
- Evoke NX Repair: £90-160
- Intec 40GS2 Repair: £120-180
- Intec 50CS Repair: £120-200
- Intec S Repair: £120-200
- Intec2 25 28XE Repair: £120-200
- Intec2 30SE Repair: £120-200
- SY9 24 Repair: £200-400
Source
Alpha 06 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 7 July 2026