Honeywell RTH8500D Owner's Manual - Page 60

Troubleshooting Tips (Continued) If . . . Then . . . Cannot set System setting to Cool. Check Installer Setup Number 0170, Heating and/or Cooling System Type; make sure the setting matches the installed heating and/or cooling system. "Heat On" is not shown in the display. Set the System setting to Heat and set the temperature setting above the room temperature. If "Heat On" is shown solidly in the display, but the heating system does not turn on, see "Heating system does not turn on" in the Troubleshooting Tips. "Cool On" is not shown in the display. Set the System setting to Cool and set the temperature setting below the room temperature. If "Cool On" is shown solidly in the display, but the cooling system does not turn on, see "Cooling system does not turn on" in the Troubleshooting Tips. "Wait" shows in the display. Compressor minimum-off timer is active. Wait up to five minutes for the cooling or heating system to turn on. Fan does not turn on Check Installer Setup Number 0180, Fan in a call for heat Control in Heating, and make sure it is set to (electric furnaces Electric Heat. only). Heat pump puts out Check Installer Setup Number 0190, Heat cool air in the heat Pump Changeover Valve, and make sure the mode and warm air in setting matches the changeover required by the cool mode (heat the installed heat pump. pumps only). Both the heating and Check Installer Setup Number 0170, Heating cooling systems are and/or Cooling System Type, and make sure running at the same the setting matches the installed heating and/ time. or cooling system. Check and make sure the bare portions of the wires are not touching. 69-1725-1 60