Sharp SJ-F80SP-BK 4 Door refrigerator doesn't cool, freezer (bottom) working fine

SELF-DIAGNOSIS MODE
1. Entering method of the mode
1) Press the [Select] button on the LCD panel over 5 seconds at the opening condition of the
freezer and refrigerating room doors.
2) With a beep sound of buzzer, the self-diagnosis mode is entered. When the self-diagnosis
mode is not entered by the above operation, defect of Reed SW system can be considered.
2. When the self-diagnosis mode is entered, the following movements will be made. Forced release operation is not prepared for the self-diagnosis
mode. It returns to the normal movement after a lapse of 2 minutes.
• During the express ice making, express freezing or timer, the mode is released.
• Plasmacluster will not release the mode, and ON is forced for 2 minutes whether it is ON or OFF.
• When the self-diagnosis mode is entered, beep sound for reminding of closing the door must not be sounded for 20 minutes.
• Defect and various conditions are shown by the beeping buzzer pattern.
• Defect and various conditions are displayed on the LCD panel. In case of plural defects and various conditions, these are displayed one after
another by button operation and all contents are notified.
3. Display of self-diagnosis
• Display example of LCD panel (at the defect of F-thermistor system)
• Buzzer notice example; (at defrost defect, 2 times of 0.5 second ON)

When the freezer section gets cold and reaches its required cooling temperature, after that the frost on freezer section starts defrosting and the cooling fan in the freezer section blows this cool air from freezer to fridge. But if the defrost cycle does not start then over ice will get collected on freezer ventilations and that will block the air passing section from freezer to fridge, so the freezer gets cool but fridge section does not cool.Its defrost problem. Try manual defrost by unplugging the refrigerator from main power outlet for 4 hours then reconnect it and check, if the same problem is noticed again,. If yes then its defrost board problem. The defrost board located in the back of fridge section. You can get required parts from www.repairclinic.com or from online sears part site. ------------- Thank you.