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Fan operation settings
1 Press the Fan button to cycle to the next
available Fan mode.
2 Cycle through the modes until the required
Fan mode is displayed and leave it to
activate.
NOTE: Available Fan modes vary with system
settings.
Fan modes:
‒ Auto: Fan runs only when the heating or
cooling system is on.
‒ On: Fan is always on.
Thermostat mounting
1. Push excess wire back into the wall
opening.
2. Close the UWP door. It should remain
closed without bulging.
3. Align the UWP with the thermostat, and
push gently until the thermostat snaps in
place.
4. Turn the power on at the breaker box or
switch.
System operation settings
1 Press the Mode button to cycle to the next
available System mode.
2 Cycle through the modes until the required
System mode is displayed and leave it to
activate.
NOTE: Available System modes vary by model
and system settings.
System modes:
‒ Auto: Thermostat selects heating or cooling as
needed.
‒ Heat: Thermostat controls only the heating
system.
‒ Cool: Thermostat controls only the cooling
system.
‒ Em Heat (TH4210U only) (only for heat
pumps with auxiliary heat): Thermostat
controls Auxiliary Heat. Compressor is not
used.
‒ Off: Heating and cooling system is off. Fan will
still operate if fan is set to On.
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