Honeywell CT3400 Owner's Manual - Page 9

When programming your new thermostat, use this guide. Batteries are required for programming and operation. SET PRESENT DAY Press and release Set Present then Day Day/Time until present day shows. SET PRESENT TIME Press and release Set Present Day/Time then a Time until present time shows. HEATING PROGRAM With system switch at HEAT, press and release Morning . Use Time a and a Temp to program Mon-Fri MORNING time and temperature. Repeat using DAYTIME, EVENING, NIGHT keys. For Saturday, press Day a to SAT. Press and release Morning ; use a Time and Temp to program Saturday morning time and temperature. Repeat using DAYTIME, EVENING, NIGHT keys. For Sunday, press Day to SUN. Repeat steps as you did for SAT. 13 69-0733-3 COOLING PROGRAM The times you set for heating remain the same for cooling; you only need to program the temperatures. With system switch at COOL, press and release Morning . Use a Temp to program Mon-Fri MORNING temperature. Repeat using DAYTIME, EVENING, NIGHT keys. For Saturday, press Day program to SAT. Press and release Morning ; use Temp a to Saturday morning temperature. Repeat using DAYTIME, EVENING, NIGHT keys. For Sunday, press Day to SUN. Repeat steps as you did for SAT. After programming, adjust fan and system switches as desired. Run Press and release Program to start the program. a Press on to move number back; press on to move number ahead. 14 PROGRAMMING 69-0733-3