Auto Changeover - Honeywell Home FocusPRO P200 Series User Manual

System Operation Settings
1 Press the MODE button to cycle to the next
available System mode.
2 Cycle through the modes until the desired
System mode is displayed.
Available System modes vary by model and
system settings.
System modes:
•
AUTO
• HEAT
• COOL
• EM HEAT
OFF
•
Fan Operation Settings
1 Press the FAN button to cycle to the next
available Fan mode.
2 Cycle through the modes until the desired
Fan mode is displayed.
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
CIRC: Fan runs about 33% of the time to
•
circulate air

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
SAVE
selected. Press the
2 Press the or button. Upper right shows
 
or button to adjust the setpoint. If the display shows
 
setpoint, or vice versa, press the System button. While
at upper left shows either
setpoint being adjusted from
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.
button (Center left).
HEAT TO
HEAT or COOL flashing. Pressing the
HEAT to COOL or vice-versa.
MODE
Indoor
Heat
MENU
FAN
Auto
MODE
Indoor
Heat
MENU
FAN
Auto
MODE button in the upper left until
or COOL TO in flashing text, and the setpoint. Use the
HEAT TO flashing when you want to adjust the Cool
HEAT TO COOL TO
or is flashing, the mode indication
MODE button at this time changes the
4
Hold
MCR39511
Hold
MCR39512
AUTO is