Honeywell RTH7400 series - Auto Changeover Feature

17
CAUTION: To avoid possible compressor damage, do not use Auto
Changeover if the outside temperature drops below 50°F (10°C).
Auto changeover
Use this feature in climates where both air conditioning and heating are
used on the same day. When the system mode is in Auto, the thermostat
automatically selects heating or cooling depending on the indoor temperature.
While in the Auto mode, if a schedule override takes place (temporarily or
permanently) the thermostat will automatically adjust the cooling and heating
settings to maintain a 3-degree separation between the cool and heat settings.
For example, if the heat temperature is
raised to where it gets within 3-degrees
of the cool setting, the display will show
an up arrow next to “Cool” to show the
thermostat is raising the cool setting up
to maintain a 3-degree separation.
The display will also show both “Auto”
and either “Heat” or “Cool” for which
temperature setting you are currently
adjusting. Press the system button to
select between the heat and cool to
view/adjust either mode.
69
System
Hold
Heat
Cool
Fan Auto
Cancel
Set To
Tue
PM
74
1
:
09
Temporary
MCR27486
System Auto
Heat
If activated during installation, the
furnace filter reminder alerts you
when it is time to replace your
filter.
Press RESET after changing the
filter, to restart the timer.
To reset the reminder interval
before it expires:
1. Press MORE, then NEXT.
2. Press RESET.
3. Press DONE to save and exit.
Reset Schedule Clock & More
System
Heat
Fan Auto
Set to
Change Filter
Heat On
AM
70
70
6
:
01
MCR2808
9
Filter reminder
Reset Next Done
Days
60
MCR28090