Honeywell T8665C Thermostat User Manual


 
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Mon = Monday, Tue = Tuesday,
Wed = Wednesday,
Thu = Thursday,
Fri = Friday, Sat = Saturday,
Sun = Sunday.
Press Day key to set current day. Example display
shows Tuesday.
3. Press Time or
Time key until
current time displays.
Tap Set Current Day/Time key to
advance time in
one-hour
increments.
4. Press Run Program key to
return to normal operation.
Press Time or Time key to set current time.
Example display shows 8:15 AM.
M1458
1
PM
M1458
2
AM
80
90
70
60
90
80
70
60
80
90
70
60
90
80
70
60
Run
Program