Quick Reference To Controls - Honeywell RTH6400 Operating Manual

Operating Manual

Quick reference to controls

Digital display (see page 5).
Function buttons
Press to select the function displayed just above each button.
(Functions change depending on the task.)
69-22ES—0
Battery holder (see page 15).
Hold button
Press to override programmed
M28401
temperature control (see page 13).
4
Temperature buttons
Press to adjust temperature
settings (see pages 11-13).