Configuring a minimum off time for a TAC Xenta 121-HP

Issue

It is desired to configure a minimum off time, so when the compressor stops in e.g. heating mode, it will not start again before a minimum time has elapsed in the same mode.

This setting is not available in the device.

Product Line

TAC Vista, SmartStruxure Solution

Environment

TAC Xenta 121-HP

Cause

There is no setting for minimum stop time when in the same mode, there is only a minimum stop time between modes.

Resolution

As a workaround, set the "Activate at" value to something other than zero (say 10%), so that you can use the "Hysteresis" at 10%, and this way get a delay.
This way you will get a delay in the most cases, a little time before the controller reacts.