DCN: 140-02121-02 Page 11
Staging Indicators
“1” = Stage 1 heating or cooling is ON
“2” = Stage 2 heating or cooling is ON
“3” = Stage 3 heating (Aux Heat) is ON
For Heat Pump systems only:
“Heat-E” = Emergency heat mode active
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.
Caution! Emergency Heat should only be used for emergencies until the HVAC system
can be repaired. Running the system in Emergency Heat mode is commonly the
most expensive mode since only the electric heat strips are being used instead of
the more efficient heat pump compressor.
Press MODE
button to change
system mode
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