Honeywell CT3400 Programming And Installation Instructions page 18

For operating or making changes, use this guide.
Temporarily Change temperature for current period only—
scheduled change, or to cancel sooner you may press
Hold a temperature indefinitely—
Check current temperature setting—
Cancel a program—Press and hold
Morning cannot be cancelled (only changed).
Permanently Change a program—Repeat steps under Heating Program (page 13) or Cooling
Program (page 14), as applicable.
Return to normal program or start program—
a
Press onto move number back; press onto move number ahead.
Program
a
Hold
Temp
, ; to cancel, press
Temp
Current
.
Setting
Evening
Daytime
,
Run
.
Program
15
a
; will cancel itself at next
Temp
Run
.
.
Night
or three seconds to cancel.
Run
Program
69-0733B—1