Please check and resolve the following and if that does not solve the problem, the product might have a malfunction, so please contact the dealer where you purchased it.
1. Is the door closed correctly?
2. If the refrigerator over filled?
3. Is the air intake fan clogged with dust?
4. Was the refrigerator installed correctly?
There must be a minimum of 100 mm of space on the air exhaust port side, so make a hole in the wall or install a louver.