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4
Operating Your Thermostat
21 User Manual
Setting the SYSTEM Control Mode
The System Control has 5 modes of operation – AUTO, COOL, OFF, HEAT and EMER. The mode can be selected
by pressing the SYSTEM button to scroll through the different modes.
NOTE: Depending on how your thermostat was configured, some system modes may not be available.
AUTO
The system will cycle between heating and
cooling automatically based on your program
set points. AUTO will be displayed with
either HEAT or COOL.
COOL Only your cooling system will operate.
OFF Heating and cooling systems are off.
HEAT Only your heating system will operate
EMER Operates a backup heat source
(Emergency Heat) for heat pump
systems only.
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