TO UNLOCK THE KEYPAD: Start with the System Mode switch in either the HEAT
or COOL positions, and the Set Slide switch in the RUN position. Perform a single
press of each button, in the following sequence: NEXT, NEXT, NEXT, HOLD. The
padlock should no longer be present, with the thermostat now unlocked. If the
padlock is still on the screen, please try to enter the 4-button sequence again.
GRAPHICAL AIR FILTER MONITOR: In most systems that use a blower fan and air
ducts, there is an air filter that is either replaceable or requires cleaning. The
filter is usually located in the air handler, where the blower fan is. This
thermostat feature assists you with keeping track of proper maintenance and/or
periodic replacement intervals for your system’s filter.
The Graphical Filter Monitor displays a visual bar graph in the center of the
screen, which shows the amount of air filter life remaining (in % percent), since
the last time the air filter timer has been reset. Each dot in the filter bar graph
equals 10 percent (example: 4 dots shown means 40 percent filter life
remaining). This feature is for information purposes only, and does not affect the
operation of your heating or cooling equipment, or the thermostat. When the
filter usage duration has completly expired, the vertical filter bar graph will be
empty, and the word “FILTER” will flash on the screen.
TO SET THE AIR FILTER DURATION: Move the Set Slide switch to the “AIR FILTER”
position. The words “SET DAYS” will be shown on the screen, along with the
word “FILTER” and 2-3 characters at the top right corner of the display. Press
either of the UP/DOWN buttons to select the desired filter duration (in days) from
the following choices: OFF, 30, 60, 90, 120, 180, or 365. If the filter duration
value is set to “OFF”, then the Air Filter Monitor will be completely disabled.
Return the Set Slide switch to the RUN position when you are finished.
TO RESET THE FILTER USAGE COUNTER: Move the Set Slide switch to the “AIR
FILTER” position. The three small digits at the bottom of the screen tell you the
quantity of filter days remaining. Pressing the NEXT button will toggle the
display between showing the days remaining as a number, or a graphical
precentage remaining using the vertical bar graph. Press both the UP and DOWN
buttons together at the same time, 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.