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
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 Emergency
Heat 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.
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