Removing the Rear Air Filter
4. Inspect the filter, and if it is dirty, replace it with a spare.
5. Depending on the condition of the air filters, use either a vacuum cleaner or
soap and water to clean them.
Specifying and Resetting the Air Filter Maintenance Status
1. Press the Setup key.
2. Click Service.
3. Click Service Messages.
4. In the Filter Cleaning section, select the number of days from the Set
Interval menu and click Done.
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iU22 User Manual
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System Maintenance
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