17
Operating Modes
There are ve possible operating modes for the McQuay thermostat. Off, Cool, Heat, and Cool & Heat modes are
accessed by pressing the SYS (left) button. Program mode is accessed by pressing the SYS (left) and FAN (right)
buttons simultaneously.
OFF Mode
• In this mode, the thermostat will not turn on the heating or cooling devices
Note: The fan speed can be set in all operating modes using the fan speed
switch.
OFF
Heat Mode
• In this mode, the thermostat controls the heating system. When the heat outputs,
the ame icon
apprears on the display.
Note: For heat pumps, there is a four minute delay for your compressor to
restart after it has turned off.
Cool Mode
• In this mode, the thermostat controls the cooling system. When the cooling
outputs, the snowake icon
apprears on the display.
Note: There is a four minute delay for your compressor to restart after it has
turned off.