Hisense FV21C7HWE User's Operation Manual page 19

A layer of frost occurs in
the compartment
Temperature inside is
too warm
Temperature inside is
too cold
Doors can't be closed
easily
The light is not working
●
Freezer door is so hard
to open
18
Large quantity of warm food has recently been stored within
the appliance.
The temperature outside the appliance is high.
Doors are kept open too long or too often.
After installing the appliance or it has been switched off for a
long time.
Check that the air outlets are not blocked by food and ensure
food is placed within the appliance to allow sufficient
ventilation. Ensure that door is fully closed. To remove the
frost, please refer to the"Cleaning and Care" chapter.
You may have left the doors open too long or too frequently;
or the doors are kept open by some obstacle; or the appliance
is located with insufficient clearance at the sides, back and top
Increase the temperature by following the "Display Controls"
chapter.
Check whether the top of the refrigerator is tilted back by about
10mm to allow the doors to self-close, or if something inside
is preventing the doors from closing.
The LED light may be damaged. Refer to replace LED lights
in" Cleaning and Care" chapter.
The control system has disabled the lights due to the door
being kept open too long. Close and reopen the door to
reactivate the lights.
Warm air inside the freezer compartment is rapidly cooled.
Since cold air takes up less space than warm air, negative
pressure results.
Typically, within a few minutes the pressures of the door will
equalize and the door can be opened with little effort.