Honeywell RTHL3550 Quick Installation Manual page 20

Advanced Installation Guide
Function 12: Manual/Auto Changeover
Press the or
s
Changeover:
0 Manual Changeover: (Heat/Off/Cool)
1 Automatic Changeover: (Heat/Off/Cool/Auto)
Automatically turns on heat or cool based on room
temperatures.
CAUTION: To avoid possible compressor damage,
set to option 0 if the outside temperature drops
below 50 ºF (10 ºC).
NOTE: System maintains a minimum 3 ºF difference
between heat and cool settings.
Press to change setting.
When correct setting is
selected, press NEXT to
display next function.
MCR32602
69-2697ES—03
button to select Manual or Auto
t
Done Next
MCR32609
18