Compressor minimum-off timer is active.
Wait up to five minutes for the cooling or
Heating system to turn on.
Set the unit and leave it alone for 10 to 15 minutes and see what it does. The WAIT is a system protection device built into the thermostat. Sometimes people play with the thermostat too much which can cause system damage so they built this in to prevent it.
Once again read your manual.
Starting on page 29 you have to do the proper set up or the thermostat will malfunction and possible cause the problem you are having.
NOTE try setting 530 in the set up to 0 instead of 1. Adaptive recovery does not work well with a heat pump. Try this for a few hours of leaving the thermostat alone then post back with results.