The purge opens and closes the valve. However, the status represents the control coming from the controller, which does not necessarily change during a purge. Thus, the actual state of the purge cannot be shown on the keypad.
Please note: The LEDs of the valve on the membrane keypad represents the control coming from the controller. Whether the purge is actually running, for example, can be done on 0-10 V devices directly at the valve output.Tags: ClimaECO, HVAC, KNX