User guide

Troubleshooting
Related messages (continued)
Message Description
CHECK THE AIR FLOW
The internal portion temperature is rising.
Please turn the power OFF, and allow the unit to cool down
at least 20 minutes. After having confirmed the following
items, please turn the power ON again.
• Is there blockage of the air passage aperture?
• Is the air filter dirty?
• Does the peripheral temperature exceed 35°C?
• If the same indication is displayed after the treatment,
please set the HIGH at the FAN SPEED of the item SER
-
VICE of the OPTION menu.
REMINDER
*** HRS PASSED AFTER THE
LAST FILTER CHECK.
FILTER MAINTENANCE IS ESSEN-
TIAL
TO REMOVE WARNING MES-
SAGE,
RESET FILTER TIMER.
SEE MANUAL FURTHER INFO.
A note of precaution when cleaning the air filter.
Please immediately turn the power OFF, and clean or
change the air filter by referring to the “Air Filter” section
of this manual. After you have cleaned or changed the air
filter, please be sure to reset the filter timer .
47ViewSonic PJ400