User's Manual

DCN: 141-02071-01 Page 3

Setting the System Mode: Off, Heat, Cool, Auto

System Modes

• Off: System is off. No heating or cooling will come on. If system was on, it will

turn off immediately.

• Heat: Only heating will occur.

• Cool: Only cooling will occur.

• Auto: Heating or cooling will come on according to the heating and cooling

setpoints. The system will automatically switch between heating and cooling

modes as needed to maintain the setpoints.

Special Heat Pump Mode: Emergency Heat

• Heat-E: An additional system mode, “Heat-E” for Emergency Heat will be

displayed if the HVAC system type is set to Heat Pump. If there is a compressor

failure with the Heat Pump system, setting the mode to EHEAT will allow the

supplemental Aux heat to come on first whenever there is a call for heating. It

also disables the compressor output to prevent further damage to the HVAC

system.

Press Mode

button to

change system

mode

72H 80C

72H 80C72H 80C

72H 80C

RUN

Off

Auto

MODE

FAN