
RTH6400 Programmable Thermostat
1 69-2211ES—01
About your new thermostat
About your new thermostat
Thermostat features ...................................2
Programming at a glance ..........................3
Quick reference to controls .......................4
Quick reference to display ........................5
Programming & Operation
Set time and day ........................................6
Select fan setting (auto/on) ......................7
Select system setting (heat/cool)..............8
Using program schedules .........................9
Program schedule overrides ...................12
Auto Changeover ..................................... 14
Built-in compressor protection ...............16
Smart Response
®
Technology .................17
Appendices
Battery installation ...................................18
Customer assistance ...............................19
In case of difficulty...................................20
Limited warranty ...................................... 22
This thermostat is ready to go!
Your new thermostat is pre-programmed
and ready to go.
See page 3 to check settings.
Table of contents
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