Why is my heating or cooling not turning on when I change the setpoint?

The thermostat's minimum off-time protection may be activated, requiring you to wait up to five minutes for the system to respond. Additionally, check that the system selection is set to the correct position (Heat or Cool), and verify that Installer Setup Number 0170 has the correct system type chosen. For heat pumps, also confirm that the O/B terminal is set correctly in Installer Setup Number 0190. (Page 20)