If the dampers do not operate despite switching the system on (generating demand), check the following:

Take into account that the system has a four-minute closure delay in the last zone. Once that time has elapsed, the zone will be closed. In the case of Easyzone, the last zone's closure involves the opening of all the zones. The system is in Sleep mode and will therefore have the dampers open.

Check concordance between thermostats and actuator outputs. To do so, switch off all the zones and switch each zone on one by one, checking that the relevant dampers open.

If the problem persists after these checks, it could be due to:
- Zone settings. Check the zone's control stages ( What are my thermostat's Control stages? ).
- The operation of the actuator. Consult opening of actuators ( The actuators of my dampers do not operate ).