Alfa Laval Micro Instructions D'installation, D'entretien Et D'utilisation page 47

14.1 Diagnostic mode, CM721
The CM721 room thermostat has a user accessible mode that provides information useful to a remote service
person and a means of checking whether the boiler is working.
To access this:
1. Press the OFF button, then press and hold the
2. The room thermostat will enter the user settings mode.
3. Next press and hold the
4. The room thermostat will hold the relay on for 5 minutes and the following information can be viewed
on the display by pressing the

Model ID, date code (WW/YY) & checksum.
All manuals and user guides at all-guides.com
button for 5 seconds.
and buttons together.
or button. :
45
Alfa Laval Micro
Installation, service and operating instruction