Software Reset; Hardware Reset - Lux Products TX500U Installation And Operating Instructions Manual

TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the
"AIR FILTER" position. The three small digits at the top of the screen tell
you the quantity of filter days remaining. Press both the UP and DOWN
buttons together, and the usage counter will return to the beginning of the
value that it originally started counting from. Refer to the previous
paragraph, should you wish to change the starting value for the filter
monitor. Return the Set Slide switch to the RUN position when you are
finished.
HARDWARE RESET: The Hardware Reset button (labeled
"HW RST") is a small round push button that is located
HW RST
towards the right side if 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 left side if the circuit board, just below the
battery holder. A Software Reset is used to erase all
SW RST
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, than 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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