BoilerFaultCodesAlpha 61 Fault Code
The Alpha 61 fault code means: your boiler is struggling to push water around your heating system because there is trapped air inside the internal pump, which is preventing your radiators from warming up properly.. It appears on 17 Alpha models in our database.
Technical description: Air in the pump. Restricted CH flow due to air or a circuit restriction
DIY fix possible
Turn off the power supply to the boiler.Locate the pump screw on the front (a large flat-head screw) and carefully loosen it to bleed out trapped air until water trickles out.Retighten the screw, ensure your system pressure is topped up to 1.5 bar, and restart the boiler.
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Alpha models that show the 61 fault code
Click a model for the full fault code list and model-specific repair notes.
- E-Tec 28
- E-Tec 33
- E-Tec NX Repair: £90-180
- E-Tec NXS Repair: £120-220
- E-Tec Plus 28
- E-Tec Plus 33
- E-Tec Plus 38
- E-Tec Plus NX Repair: £90-180
- E-Tec Regular Repair: £90-150
- E-Tec S Repair: £90-180
- Evoke Repair: £100-250
- Evoke 10 / 18 Repair: £80-250
- Evoke NX Repair: £90-£180
- Intec 50CS Repair: £90-180
- Intec² 20SE Repair: £80-150
- Intec2 25 28XE Repair: £80-150
- Intec² 30SE Repair: £80-150
Source
Alpha 61 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 31 August 2026