Honeywell T8635L Owner's Manual - Page 14

Setting the System Key Press the System key until the desired system (Heat, Off, Cool, or Auto) displays. System Heat: The thermostat controls the heating. Off: Both the heating and cooling are off. Cool: The thermostat controls the cooling. Auto: The thermostat automatically changes between heating and cooling operation, depending on the indoor temperature. Auto is available in zoned systems when using the W8835 EnviraZone ZONING Panel. Auto is not available in zoned systems when using the W8703 and W8635 Zone Panels. For this case, changing any thermostat system setting on any thermostat auto- matically changes the system setting in all zones. For example, changing the zone 1 thermostat from Heat to Cool causes all thermostats to change from Heat to Cool. HEAT PUMP Em.Ht: Emergency heat is controlled as stage 1 heat. Cooling system is off. Compressor is de-energized. (Available only with multistage heat pump.) Setting the Fan Key Press Fan key until the desired mode Fan (On or Auto) displays: On: Fan operates continuously. Auto: Fan operates only when heating or cooling. displays when the thermostat is calling for the fan in this zone. A flashing indicates that the thermostat is waiting ZONING until another zone has completed its call for heat or cool before initiating the fan call for this zone. 14 69-1332-4