Eiki LC-XNB4000N Service Manual page 66

Service mode & Calibration
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§ Auto Filter Alert
The function is to remind user for filter cleaning or replacement.
Filter counter setting
Select from (100H/300H/500H) depending on the use environment. For clean
environment, set the filter timer longer. For dirty environment, set the filter timer
shorter.
Filter warning
When the operation time reached the timer set, a warning message will appears on the
screen to remind user that the filter cleaning is required.
Reset filter timer
After cleaning or replacing the filter, you need to reset filter timer. The warning
message will not go away until the filter timer is been reset.
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