5
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 Menu, and then 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 then press
Done.
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 (TH3210U 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.
NOTE: Heat On/Cool On may flash for 5 minutes due to compressor protection.
Fan operation settings
1. Press Menu, and then press the Fan (-)
button to cycle to the next available
Fan mode.
2. Cycle through the modes until the
required Fan mode is displayed, then
press Done.
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.
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