System Setup - Honeywell RTH6400 Series Quick Installation Manual

System setup

About your new thermostat
Press and hold the
changes (approximately 5 seconds).
Press or
s t
Function
1
Done
Press DONE to exit and
save settings.
and FAN buttons until the screen
s
to change settings.
Setting
Next
M28348
0
M28349
Press NEXT to advance to
next function.
13
RTH6400
69-2210ES—05