The appliance door is not closed tightly.
Is the appliance leaning forward?
Adjust the front feet to raise the front side slightly.
Were the shelves properly assembled?
Refit the shelves if needed.
Did you close the door with excessive force?
If you apply too much force or speed when closing the door, it may remain briefly open before closing. Make sure that you do not slam the door closed. Close the door gently.
It is difficult to open the appliance door.
Did you open the door right after you closed it?
If you try to open the appliance door within one minute after you closed it, you may have difficulties because of the pressure inside the appliance. Try to open the appliance door again in a few minutes so that the internal pressure stabilizes.
The inside lamp in the appliance does not turn on.
Lamp failure
Close the door and re-open. If the lamp does not turn on, please contact the LG Electronics customer information centre. Do not attempt removal of the lamp.