White Rodgers 90 SERIES - Manual (Page 8)

WHITE-RODGERS
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
www.white-rodgers.com
TROUBLESHOOTING
RESET BUTTON
If the thermostat does not respond when keys
are pressed, or the thermostat is not operating
properly, you may use the reset button
located on the back of the thermostat body
(see fig. 2). Thermostat programming and
configuration will not be affected by
pressing the reset button. However, the clock
will need to be reset.
RESETTING THERMOSTAT CON-
FIGURATION AND PROGRAM-
MING
The thermostat can be reset back to default
programs and configuration. Removing
power from the thermostat will not reset it,
because the default settings are maintained in
permanent memory. Before resetting the
thermostat, you may want to make note of
the previously selected configuration and
programming. You must reconfigure and
reprogram the thermostat after resetting it
using this method.
To reset the thermostat, press and release
PROGRAM
RUN
, then press the FAN ,
TIME BACK and buttons at the same
time. This will reset the thermostat to factory
default programs and configuration. The
display will momentarily go blank, then all
segments on the display will momentarily be
shown. The thermostat will then go into the
HOLD mode and will maintain factory preset
temperatures.