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Honeywell Home TH2110WF4008 Series Smart Thermostat User Manual
Auto Changeover
When a thermostat is set to Auto Changeover, the thermostat has a Heat setpoint and a Cool setpoint and can
run either Heat or Cool as needed.
1
Verify the thermostat is set to Auto Changeover mode. Press the MODE button in the upper left until AUTO is
selected. Press the SAVE button (Center left).
2
Press the or button. Upper right shows HEAT TO or COOL TO in flashing text, and the setpoint. Use the
or button to adjust the setpoint. If the display shows HEAT TO flashing when you want to adjust the Cool
setpoint, or vice versa, press the System button. While HEAT TO or COOL TO is flashing, the mode indication
at upper left shows either HEAT or COOL flashing. Pressing the MODE button at this time changes the
setpoint being adjusted from HEAT to COOL or vice-versa.
Heat and cool set to the same temperature
Most people are comfortable in a 2–3-degree temperature range. Therefore, the heat is usually set a few degrees
below the Cool setpoint. When the indoor temperature is between the Heat and Cool setpoints, the system is off.
The Heat and Cool setpoints can be the same. To ensure that the system doesn’t cycle back and forth between
Heating and Cooling, the thermostat observes a differential setting, set by the installer. If the thermostat last ran
in Heat mode, it cycles heat on and off to maintain the setpoint. The indoor temperature must rise to the
differential setting before it switches to Cool.
Then cooling will run down to the Cool setpoint and cycle cooling on and off to maintain as needed. The
thermostat would then need to drop to the differential setting before switching back to Heat. Typically, a
thermostat using Auto Changeover would only need to switch over twice per day as outdoor temperature rises
during the day and drops in the evening.
5
| General | Details |
|---|---|
| Name | Honeywell Home TH2110WF4008 Series Smart Thermostat User Manual |
| Make | Honeywell Home |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.3 MB |
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