LG LSC27914ST Owner's Manual - Page 87
Abnormal Defrost Error
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7) Abnormal Defrost Error NO. CHECKING FLOW 1 Check the Door Gasket for any abnormality. Unplug the product, remove Grille Fan assy, and check the Defrost Control Part. 2 Defrost Controller Assy connector Defrost sensor Defrost Heater Connector Fuse-M Reset Refrigerator, then, enter to TEST MODE 2 (Press twice TEST S/W on Main PCB. 3 RESULT & SERVICE ACTION Result 0 Ù Fuse-M OFF Defrost Heater 48~54 Ù Other Desfrost Sensor 0 Ù OFF Service Action Go to Step 3 Change Defrost Controller Assy Go to Step 3 Change Defrost Controller Assy Go to Step 3 Change Defrost Controller Assy All LED's ON Check Voltage between Purple to Brown wires in CON 2. 4 5 Release TEST MODE 2 (Press once TEST S/W on Main PCB) Check Voltage between Purple to Brown wires in CON 2. 6 Result 110~127 V 0 V Result 0 V 110~127 V Service Action Go to Step 5 Replace Main PCB Service Action Explain to customer Replace Main PCB - 86 -