Honeywell T8665C Thermostat User Manual


 
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Programming the First Day
To modify the preprogrammed schedule, start
by programming the Wake time and temper-
ature and fan operation for any one day.
1. Press the Wake key.
Press Wake key to enter program mode. Example
display shows 6:00 AM Tuesday with Heat set to
70°F.
2. Press Day key until desired
day displays.
Press Day key to select day to program. Example
display shows Monday is selected and ready to
program.
3. Press Time or Time key until desired
Wake time displays.
M1458
6
System
Fan
Heat
Auto
AM
M1458
8
Set Program
Mon
Wake
System
Fan
Heat
Auto
AM
Heat
Setting
Wake
Day