White Rodgers 1hdez-1521 Thermostat User Manual


 
DIAGNOSTICS
19
Reset Operation
If a voltage spike or static discharge
blanks out the display or causes erratic
operation of your thermostat, you can
reset it.
To reset the thermostat, press
, ,
and System button at the same time.
NOTE:
When the thermostat is reset,
the Thermostat Settings, time and
date, and programming schedule will
be reset to the factory defaults. Refer
to the customized settings for your
thermostat recorded on the back cover
of this manual. Use this manual to help
restore the desired settings before
they were reset. For your convenience,
the factory default settings are shown.