Hitachi CP-WU5500 User Manual page 111

Troubleshooting
Related messages (continued)
Message Description
A note of precaution when cleaning the air filter.
Please immediately turn the power off, and clean or
change the air filter referring to the Cleaning and
replacing the air filter section of this manual. After you
have cleaned or changed the air filter, please be sure to
reset the filter timer (70, 106).
The button operation is not available.
Check the button you are going to use (7).
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