Issue
Xenta 102-AX Heat cycling off even with rev. 1.11
Environment
TAC Xenta 102-AX v1.11
Cause
If nvi_applicmode is bound to another device, it will revert to hvac_cool for a split second every time it receives a packet. If the controller is in heat mode, this is long enough for the heat to turn off and the terminal load to go to 0 for about 3-5 seconds. If it is time to change modes anyway, this is not a problem but if the mode is re-enforced periodically, your heat output will turn off upon that period.
Resolution
There is no need to re-enforce this command, so make sure that the output is set to send ONLY on a change. Make sure period is set to 0.