Factory Default Settings - York LX series Owner's Manual

Installer Setup
Resetting the Thermostat to the

Factory Default Settings

If, for any reason, you desire to return all the stored settings back to
the factory default settings, follow the instructions below.
WARNING: This will reset all Time Period and Advanced
Programming to the default settings. Any information entered
prior to this reset may be permanently lost.
Press and hold SETUP for 5 seconds. All icons will appear on the display.
Keep pressing the SETUP
button until you see this
SETUP
screen.
After all the icons appear, release SETUP. Press and hold FAN for 5 seconds.
DEFAULTS will appear on the display.
Keep pressing the FAN
button until you see this
screen.
After DEFAULTS appears, release FAN. Press MODE to return to normal
operation.
(for default values see page 34)
Program ONOFF
Am 2nd3rd
18:88
Pm
Stage
Setup Step
188
Day Night
Morning
Evening
Fan On
Outdoor
188
DEFAULTS
MODE
Page 31
188
H
C L S
OO ET
A H S
UX EAT ET
88
Lo