BoilerFaultCodesAlpha ERR>CM Fault Code
Also written as ERRCM — same fault.
The Alpha ERR>CM fault code means: your boiler has lost its electronic link to the remote temperature controller, meaning it can no longer receive instructions on when to turn the heating on or off.. It appears on 12 Alpha models in our database.
Technical description: Connection error between the boiler and the Climatic control panel (Climatic control is powered but connection is lost).
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Alpha models that show the ERR>CM fault code
Click a model for the full fault code list and model-specific repair notes.
- E-Tec Repair: £120-220
- E-Tec 24 Repair: £120-220
- E-Tec 28 Repair: £120-220
- E-Tec 33 Repair: £120-220
- E-Tec Plus Repair: £120-250
- E-Tec Plus 10 / 18 Repair: £60-140
- E-Tec Plus 24 Repair: £120-250
- E-Tec Plus 28 Repair: £120-250
- E-Tec Plus 33 Repair: £120-250
- E-Tec R
- Evoke Repair: £80-150
- Evoke 10 / 18
Source
Alpha ERR>CM 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