Honeywell T8400 - Changing Temperature Setting

ChangingTemperatureSetting
1. To lower the temperature setting, press the • key.
When in the heating mode, lowering the temperature at
night or during the day can lower your energy costs.
Set Room
M18442
2. To raise the temperature setting, press the • key.
When in the cooling mode, raising the temperature
before you leave for work or school also lowers your
energy costs.
Set Room
M18443
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