I have a heat pump and a furnace and I have a Honeywell Th9320WF5003 thermostat. The thermostat doesn't seem to turn itself off when it reaches the setpoint.

To clarify, if I program the thermostat to cool until it hits 24 celsius, when the thermostat hits 24 celsius, it continues to run for several hours.

Any suggestions on how I can determine what the issue is? Could there be a problem with the thermostat?