BoilerFaultCodesAlpha 10 Fault Code
The Alpha 10 fault code means: your boiler is struggling to manage the water pressure inside its internal components, which may prevent your hot water from heating up properly.. It appears on 23 Alpha models in our database.
Technical description: DHW expansion device (if fitted)
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 10: no call-out fees, no surprise bills.
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Alpha models that show the 10 fault code
Click a model for the full fault code list and model-specific repair notes.
- 240XE Repair: £120-250
- CD18 / CD24 Repair: £80-150
- E-Tec 28 Repair: £80-150
- E-Tec 33 Repair: £80-150
- E-Tec NX Repair: £0-120
- E-Tec NXS Repair: £0-120
- E-Tec Plus Repair: £0-£120
- E-Tec Plus 10 / 18 Repair: £0-160
- E-Tec Plus 28 Repair: £0-£120
- E-Tec Plus 33 Repair: £0-£120
- E-Tec Plus NX Repair: £0-160
- E-Tec Regular Repair: £80-150
- E-Tec S Repair: £0-120
- Eco Repair: £80-150
- Eco 11 13 Repair: £0-120
- Evoke Repair: £80-150
- Evoke 10 / 18 Repair: £0-120
- Evoke NX Repair: £0-120
- Intec 40GS2 Repair: £0-£120
- Intec 50CS Repair: £0-£120
- Intec S Repair: £80-150
- Intec2 25 28XE Repair: £0-£100
- Intec2 30SE Repair: £80-120
Source
Alpha 10 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