LG LFX28968SW Service Manual - Page 21

6. TROUBLESHOOTING 6-1 Error Code Summary WARNING: When checking Resistance values, make sure to turn off the power, and wait for the voltage to discharge. NOTE) Within 3 hours after the error : Press the Ice Plus button and Freezer button simultaneously 3 hours after the error : All errors, except for "Er rt", "Er HS", "Er IS(except for Icing sensor)", "Er gF", "Er It" error, are displayed. "Er IS" which is displayed without input of user is the error of Icing Sensor. Error Display NO Error Detection Category Freezer Temperature Refrigerator Temperature Error Generation Factors (Error code ①) (Error code ②) Remark 1 Normal 2 Freezer Sensor Error Er 3 Refrigerator Sensor Error Er 4 Defrosting Sensor Error Er 5 Icing Sensor Error Er 6 Humidity Sensor Error Er Room Temp 7 Sensor Error Er None Normal operation of Display FS Short or Disconnection of Freezer Sensor rS Short or Disconnection of Refrigerator Sensor dS Short or Disconnection of Defrosting Sensor IS Short or disconnection of the sensor about Ice maker (Icing sensor, Ice maker Check each sensor at it's connector. sensor) Short or Disconnection HS of Humidity Short or Disconnectoin of rt Room temp.sensor 8 Ice maker kit defect Er Other Electric system error When the ice does not drop It such as moter, gear, Hall IC, even when the I/M Test S/W operation circuit within I/M kit is pressed Flow 9 Meter(Sensor) Er Defect 10 Poor Defrosting Er Abnormality of 11 BLDC FAN Motor Er for Ice Making Abnormality of 12 BLDC FAN Motor Er for Freezer Abnormality of 13 BLDC FAN Motor for Mechanic Er Room 14 Communication Error Er gF Error of flow meter or water input or low water pressure Error of flow meter or water input or low water pressure or flow meter connection dH During 2 consecutive cycles the defrosting sensor did reach over 46F (8C) Temperature Fuse Disconnection, Heater disconnection, DRAIN Jam, Poor Relay for Heater It is caused when feedback IF signal isn't over 65 seconds Poor BLDC Motor connection, during BLDC FAN motor DRIVE IC, and TR operating It is caused when feedback FF signal isn't over 65 seconds Poor BLDC Motor connection, during BLDC FAN motor DRIVE IC, and TR operating It is caused when feedback CF signal isn't over 65 seconds Poor BLDC Motor connection, during BLDC FAN motor DRIVE IC, and TR operating Poor Communication Communication Error connection,Poor TR of CO between Micom of Main PCB Transmitter and Receiver and Display Micom Tx/Rx between display and main board. - 21 -