Hisense AE-15K4AF1 Operation Manual page 18

Problems
The purify speed
cannot be adjusted
after power-on running
During running, there is
no response when you
press the button
The air is dirty, but the air quality
indicator light is still on in green
It is difficult to remove dirt
from the air
The air flow at outlet is
much weaker than before
The air from air outlet
smells funny
The "High/middle/low" indicator
light for purify speed flashes and
the machine shuts off automatically
The filter has been replaced, but
the machine cannot be turned on
when the power button is pressed
Possible solutions
Each time the power is turned on, the product runs in the default smart purify mode. At this
time, the purify speed is automatically adjusted by the machine according to indoor air
quality; if you want to adjust the running state at will, please press the purify mode button to
exit smart mode.
The child lock function may be enabled and the product is locked. Please press the child lock
button for 3 seconds, the indicator light will go out, and the child lock function will be
cancelled, so that you can do what you want.
Please confirm whether it is a place where the pollutants are difficult to be absorbed. Please
refer to the operating hints.
Is the filter dirty and ineffective? If this still cannot be improved after maintenance, please
contact the after-sales service to replace by a new filter.
The high-density filter is very dirty, please clean the filter. For the method, please see the
contents in "Maintenance and care".
Is it used in areas with strong odors? If being used in areas with strong odors such as
cigarette and barbecued meat, the filter will smell bad for weeks or months. Please
replace the filter and keep it ventilated at all times.
When the machine is turned off and restarted, normal operation will be resumed after
troubleshooting. If the fault is still there, please contact the customer service staff for
maintenance.
Maybe you didn't press the reset button. The product will start normally only after resetting is
completed by pressing and holding comfort button and the indicator light goes out.