Honeywell 1-Heat/1-Cool - TH5110D1022 Large R Operating Instructions Manual page 16

1. Press the System button to change the System
setting to Auto.
PRESS THE
SYSTEM BUTTON
TO CHANGE
SYSTEM SETTING
TO AUTO.
The Auto setting appears only if the thermostat is
set up for Auto Changeover by your heating and air
conditioning dealer.
Auto Changeover (Cont)
Replace Batt
Service Needed
CoolOn
Fan System
Auto Cool
16
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