Table of contents
Programming & Operation
Quick reference ...................................2
Date/time settings ................................4
Fan settings .........................................5
System settings ...................................6
Energy Saver settings..........................7
Using program schedules ....................8
Schedule overrides ..............................9
Menu options
System status ....................................11
Vacation/event scheduler ...................12
Humidity controls ...............................17
Ventilation controls.............................20
CAUTION: EQUIPMENT DAMAGE HAZARD
operate cooling system when outdoor temperature is below 50˚F (10˚C).
This thermostat contains a Lithium battery which may contain Perchlorate material.
Special handling may be required. See www.dtsc.ca.gov/hazardouswaste/perchlorate.
Preferences menu .............................21
Temporary schedule changes............22
Screen cleaning .................................23
Security settings ................................24
Installer contact information ...............25
Advanced features .............................26
Appendices
Installer options .................................27
Battery replacement ..........................28
Humidity display .................................30
Optional accessories .........................31
In case of difficulty .............................34
Limited warranty ................................35
. To prevent possible compressor damage, do not
1
Prestige
THX9321/THX9421 Thermostat
®
69-2703EFS—03