Lux Products P721UTa Thermostat User Manual


 
for viewing the Energy Usage while in Heat mode. Viewing the Cool mode
information is done in the same exact manner in Cool mode.
TO VIEW THE ENERGY USAGE TIMERS: Press the MENU button, then press the
SCROLL button until “REVIEW HEAT ENERGY USAGE” is shown, then press the OK
button. The words “TODAYS ENERGY USAGE” will appear at the top of the screen,
along with the amount of heating system runtime (displayed as “HH:MM”, for
hours and minutes). Use the NEXT button to cycle between Today’s Usage,
Yesterday’s Usage, and the Total Cumulative Usage for heat mode. NOTE: For the
Total Cumulative Usage, the timer will record up to a maximum of 99 hours and
59 minutes, then the display will change to “HHHH” for hours only, without the
colon in the center.
Pressing NEXT after the Total Cumulative Usage will show the words “TOTAL
USAGE RESET?” at the top of the screen. Pressing OK at this screen will clear
the Heat Energy Usage timer, and start back at 0 (zero). Press the EXIT button to
return to the Normal Run screen.
HARDWARE RESET: The Hardware Reset button (labeled “HW
RST”) is a small round push button that is located towards the
right side of the circuit board, just below the battery holder.
Pressing this button will cause the LCD display screen to
become fully populated, the heating and cooling load relays to
cycle off, read the position of the Hardware Setup Option
switches, and will perform an internal system check of the thermostat
components. If your thermostat appears to be acting in an erratic manner,
pressing the Hardware Reset button may remedy this behavior. The temperature
programs are not erased when a hardware reset is performed, however the clock
will have to be changed to match the current day and time.
SOFTWARE RESET: The Software Reset button (labeled “SW
RST”) is a small round push button that is located towards the
right side of the circuit board, just below the battery holder. A
Software Reset is used to erase all heating and cooling
temperature programs, and any user-adjustable software
values such as: Swing, Offset, and Calibration, to their original
factory default values. To perform a Software Reset, press and hold the Software
Reset button for at least 5 seconds. The LCD display screen will become fully
populated, then return to normal. The thermostat will still retain the current day
and time even after a Software Reset has been performed.
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HW
RST
SW
RST