![background image](http://html1.mh-extra.com/html/mars/70812/70812_installation-and-operating-instructions-manual_1730627010.webp)
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•
Filter Change Reminder:
The thermostat features a reminder for the user to change the heating/cooling
system filter(s). When the system fan is operating, the internal thermostat timer is activated. When the
timer reaches 500 hours, the filter icon will appear in the LCD. To view the time:
1)
Depress the
PROGRAM
and
RUN
keys simultaneously. The time in
hours will be displayed. To reset the
filter icon from this position, depress
and hold the
PROGRAM
key for 3 seconds. The counter will reset to 000 Hr.
•
Low Battery Detection:
Low battery power is displayed by the illumination of a battery icon in the LCD.
The thermostat can operate for a period of 2 months once the warning has been initiated. Two fresh AA
Alkaline batteries should be installed as soon as the warning icon illuminates.
Image shows the filter counter at 208 hours.
The filter icon illuminates in the primary display at 500 hours.
The image shows the low battery warning
icon in the lower right corner
70812-IM 12/21/06 3:06 PM Page 10