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LG LFXS24623B, Service Manual

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LG LFXS24623B Service Manual Download Page 70

10-4 How to check the Fan-Error

(1) EBR650027**

After sending a signal to the fan, the MICOM checks the BLDC fan
motor s lock status. If there is no feedback signal from the BLDC fan,
the fan motor stops for 10 seconds and then is powered again for 15
seconds. To determine that there is a fan motor malfunction,
this process is repeated 3 times. If the fan motor is determined to be
defective, the error code will be shown in the display for 30 minutes.
At this point, the process will be repeated until the fan motor operates
normally. If normal operation is achieved, the error display is erased and
the MICOM is reset automatically.

No signal

Error Display

15s

10s

15s

10s

15s

Normal drive

No signal

Repeat

20s

10s

15s

10s

Pause 30min

Pause 30min

10s

15s

20s

Summary of Contents for LFXS24623B

Page 1: ...REFRIGERATOR SERVICE MANUAL LFXS24623S LFXS24623W LFXS24623B ...

Page 2: ...3 FAN AND FAN MOTOR DISASSEMBLY METHOD 13 PULL OUT DRAWER 13 4 ADJUSTMENT 14 5 CIRCUIT DIAGRAM 15 6 TROUBLESHOOTINTG 16 7 PCB PICTURE 17 8 TROUBLESHOOTING WITH ERROR DISPLAY 19 9 TROUBLESHOOTING WITH ERROR DISPLAY 28 10 REFERENCE 37 11 COMPONENT TESTING INFORMATION 43 12 TRBOUBLESHOOTING 52 13 ICEMAKER OPERATING METHOD AND TROUBLESHOOTING 65 14 DESCRIPTION OF FUNCTION CIRCUIT OF MICOM 69 15 EXPLOD...

Page 3: ...ray Bank Lamp Shelf Egg Bank Pantry F Drawer lower Lamp Shelf GENERAL FEATURES ISO8 180 ml MOLECULAR SIEVE XH 7 ID Ø 0 75 4 HOURS 7 50 HOURS SHEATH HEATER CYCLO PENTANANE LINEAR Defrosting System FULL AUTOMATIC HEATER DEFROST 24 2cu ft TEMPERATURE N DOOR HIGH BRIGHTNESS LED AL SPIRAL CONDENSER 1EA PL 1EA PL FIN TUBE TYPE CAPSULE LED NO FREEZER 3FIX S PROOF 1FOLD WATER TUBE HEATER REFRIGERATOR R134...

Page 4: ...low flexibility for storage needs GALLON STORAGE BINS 2 Three interchangeable bins can be arranged to suit your storage needs REMOVABLE ICE STORAGE BIN 3 The ice storage bin can be removed to fill ice buckets coolers or pitchers LED INTERIOR LAMPS 4 Refrigerator interior is lit by the LED array CAN STORAGE BIN 5 FIXED DOOR BIN 6 ...

Page 5: ...le hinge pin and remove door 8 Place the door with the insides facing up on a not scratch surface CAUTION When lifting hinge free from the latch be careful that door does not fall forward Right Door FIG 3 1 Open the door remove 1 screw on the top of the hinge cover Loosen top hinge cover screw 1 Lift up cover 2 2 Disconnect door switch wire harness and remove the cover 3 Rotate hinge lever 3 clock...

Page 6: ... up carefully 3 Disconnect wire harness Door Gasket Replacement 1 Insert gasket into channel Press gasket into channels on the four remaining sides of door 2 Insert mullion into the channel Insert the cover assembly into bracket door Mullion Replacement 1 Connect wire harness 3 Assemble 2 screws Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ...

Page 7: ...ter cutting the Tie Wrap Figure 13 Figure 12 Figure 13 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY 3 3 Door Alignment If the space between the door are uneven follow the instructions to align them Remove the Base Grillie Turn the leveling legs counter clock wise to raise or clock wise to lower the height of the front of the refrigerator by using flat blade screw driver or 11 32 wrench Use the wrench ...

Page 8: ...elease 2 screws 2 Hold both ends and pull down to remove 3 6 1 Refrigerator Compartment Lamp Figure 16 4 Use a flat tool as shown below to remove the lamp cover Figure 17 5 To remove the LED assembly pull apart the cover Cover lamp Case lamp LED Assembly 3 To remove the lamp case and cover release 2 screws as shown 4 Separate connector 5 Remove screw with driver 1 Remove filter cover to turn count...

Page 9: ...ook 3 Push and pull on the tab to remove CAUTION When replacing the dispenser cover make sure the lead wire does NOT come off and the water line is not pinched by the dispenser Case PCB Button Lever Display PCB Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 30 Figure 28 Case PCB Display PCB Figure 29 Figure 28 2 Use these 2 holes to pull out the bottom 3 If nozzle is interfered...

Page 10: ...r with the other hand 3 13 WATER BUTTON ASSMEBLY 1 Remove screws 2 Grasp the Button assembly and lift Button Lever hinge 1 Remove 4 screws as shown 3 15 ICEMAKER REPLACEMENT 2 Grasp the bottom of motor cover assembly and pull slowly 3 Disconnect wire harness from wall of compartment In door motor Figure 31 Figure 32 Figure 35 Figure 33 Figure 34 ...

Page 11: ...ition 2 Unscrew 3 screws to disassemble the motor 4 Insert 2 screws 5 Push housing aside 3 16 SUB PWB FOR WORKING DISPENSER 1 Disconnect the wire harness 2 Remove 1 screw from PWB and replace with new PWB CAUTION Make sure that the motor housing is taped to the mold if not positioned correctly the cover will not fit properly Figure 36 Figure 37 Figure 38 Figure 43 Figure 42 Figure 41 Figure 40 Fig...

Page 12: ...andles as shown 2 Tilt and lift slightly as shown 3 19 HOW TO INSERT A ICE BIN 1 Insert the Ice Bin slightly tilting to avoid touching the Icemaker Especially Ice Detecting Sensor 3 Remove ice bin slowly Figure 44 Figure 45 Figure 46 Figure 47 ...

Page 13: ... by lifting clear of the rail support Fully extend both rails Step 5 First Remove the gear from the left side first by releasing the tab behind the gear place a screwdriver between the gear and the tab and pull up on the gear Second Remove the center rail Third Remove the gear from the right side by following the same steps for the left side NOTE THIS TAB MUST BE PUSHED IN TO RELEASE THE GEAR Figu...

Page 14: ...r and insert the gear into the clip Step 4 The rail system will align itself by pushing the rails all the way into the freezer section Pull the rails back out to full extension Step 5 Reinstall the freezer door by inserting the rail tabs into the guide rail Step 6 Reinstall 2 screws into the guide rail one on each side Step 7 Reinstall the lower basket and close the freezer door Figure 53 Figure 5...

Page 15: ...let to separate the tube from the connector Note there maybe some water in the line Mechanical Cover Housing MOTOR COVER 2 Separate the Fan Assembly and Motor turn counter clockwise to remove from the motor shaft FAN ASSEMBLY MOTOR Assemble in reverse order Taking care to avoid 1 Do not to bend the tube during assembly 2 Press the Water Dispenser button letting water pour out this checks for any l...

Page 16: ...3 23 Drawer Removal Fully extend the drawer and lift from the front pulling straight out To install the drawer back into the frame tilt the front sightly and pushingt back into place Figure 66 Figure 67 ...

Page 17: ...ssure gas from the evaporator of the refrigerator and compresses this gas to high temperature and high pressure gas It then delivers the gas to the condenser 4 1 2 Note for Usage 1 Be careful not to allow over voltage and over current 2 Do not drop or handle carelessly 3 Keep away from any liquid If liquid such as oil or water enters the Cover PTC Compressor may fail due to breakdown of their insu...

Page 18: ...otection logic Since linear Comp conducts linear reciprocating motion we have protection logic for compressor motor and PCB as the below Stroke Trip During the operation if stroke is above the target value decrease the target volt by 3V Current Trip Current trip is set in order to protect compressor mechanical part and drive from the overcurrent that might arise during the operation Check the curr...

Page 19: ...nt Trip Lock Piston Trip IPM fault trip Led Times 2 6 5 7 Comp Off Time 1min 6min 2min 30sec 20sec 3 Check problems by LED On Off Count _ Sub PCB Fig 2 Fig 2 Current Trip PCB defects or Cycle clogging maybe the causes After estimating winding resistance estimate compressor operation voltage to check if there is any problem and take actions to repair cycle at replacement of compressor Stroke Trip c...

Page 20: ...5 CIRCUIT DIAGRAM ...

Page 21: ...it within I M kit When the ice does not drop even when the I M Test S W is pressed 9 Flow Meter Sensor Defect E 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 11 Abnormality of BLDC FAN Motor for Ice Making E IF It is caused when feedback signal isn t over 65 seconds during BLDC FAN motor operating Poor ...

Page 22: ...7 PCB PICTURE 7 1 Main PCB P No MFG Picture EBR792671 2014 06 CON5 CON6 CON7 CON2 CON3 CON1 CON201 CON4 ...

Page 23: ...7 2 Display PCB Sub PCB P No Display PCB EBR786626xx 2014 06 Sub PCB EBR60070711 2014 06 Picture CON104 CON102 CON101 CON3 CON1 CON2 ...

Page 24: ...7 15th pin 16th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k CON7 1 3 5 2 4 6 8 10 12 7 9 11 13 14 15 16 17 18 21 22 23 24 19 20 BN GY WH BN WH GY PK WH RD PR BO BL BO BK PR WH WH WH BL WH BL WH BN BN YL BL RD WH BK YL BK SB M M M P M 3 2 1 BK RD F ROOM LED MODULE O P C STEPPING MOTOR D SENSOR F SENSOR R SENSOR F FAN MOTOR C FAN MOTO...

Page 25: ...s No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes CON7 15th pin 16th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 5ºF 15ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k 6 Explain to customer CON7 ...

Page 26: ...ck Point 1 E rS 1 Check for a loose connection 2 Check Sensor Resistance Resistance Ω CON7 13th pin 14th pin Short 0 Open OFF Other Normal CON7 13th pin 14th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 ...

Page 27: ...Sensor short Yes No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON7 13th pin 14th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 ...

Page 28: ...1 Check for a loose connection 2 Check Sensor Resistance Resistance Ω CON5 15th pin 17th pin Short 0 Open OFF Other Normal CON5 15thpin 17th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k CON5 ...

Page 29: ...s No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON5 1stpin 2nd pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k CON5 ...

Page 30: ... Point 1 FdS 1 Check for a loose connection 2 Check Sensor Resistance Resistance Ω CON7 17th pin 18h pin Short 0 Open OFF Other Normal CON7 17th pin 18th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 ...

Page 31: ...nce 0 Sensor short Yes No Change the Sensor 3 Check the Sensor resistance Is resistance OFF Sensor open Yes No Replace the refrigerator 4 Check the Sensor resistance Is resistance normal Yes 5 Check the Temperature and resistance refer to the table No problem Yes 6 Explain to customer CON7 17 pin 18 pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k CON7 th th ...

Page 32: ...Symptom Check Point 1 E It 1 Check for a loose connection 2 Check Sensor Resistance 8 5 Ice Maker Motor Error E It CON4 ...

Page 33: ...hange the Ice maker kit 3Check the ice maker reverse status The voltage 1 3 point 11 12V Yes Change the Ice maker kit 4 Check the ice maker forward status The voltage 1 2 point 0V Yes Change the Main PCB 5 Check the ice maker reverse status The voltage 1 3 point 0V Yes No Change the Main PCB OR OR 1 2 3 1 Pin2 2 Pin10 3 Pin9 1 2 3 1 Pin2 2 Pin10 3 Pin9 1 2 3 1 Pin2 2 Pin10 3 Pin9 1 2 3 1 Pin2 2 Pi...

Page 34: ...1 Check the door gasket 2 Check the Defrost control part 3 Check the PCB output voltage Part Resistance Ω FUSE M 0 Defrost Heater 34 42 Defrost Sensor 22k TEST MODE 3 Voltage V CON3 2nd pin 9th pin 112V 116V TEST MODE 1 Voltage V CON3 2nd pin 9th pin 0V CON3 ...

Page 35: ...e 34 42 Ω No Yes Change Fuse M 4 Check the Heater Voltage Is voltage 220 240V Yes 3 Check the Defrost control part Is Defrost Sensor resistance 22k or OFF OFF 22kΩ Replace product Input Test 3 Mode Push the button 3 times Replace Main PCB NO TEST MODE 3 Voltage V CON3 2nd pin 9thpin 112V 116V 5 Check the Heater Voltage Is voltage 0V Yes Input Test 1 Mode Push the button 1 times Replace Main PCB No...

Page 36: ...an Error E FF Symptom Check Point 1 E FF 1 Check the air flow 2 Check the Fan Motor 2 Check the PCB Fan motor voltage TEST MODE 1 Voltage V CON7 10th pin 12th pin 8 12V CON7 8th pin 12th pin Not 0V 5V Fan Motor CON7 ...

Page 37: ...Is Fan Motor voltage 8 12V Yes 3 Check the Fan motor Rotate fan using hand It feel sticky Yes Change the Fan motor Replace Main PCB No Reset the unit and Input Test1 Mode Push the button 1 time Go to 4 Fan Motor TEST MODE 1 Voltage V CON7 10thpin 12th pin 8 12V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes 6 Explain to customer CON7 CON7 ...

Page 38: ...an Error E IF Symptom Check Point 1 E IF 1 Check the air flow 2 Check the Connector 2 Check the PCB Fan motor voltage TEST MODE 1 Voltage V CON7 3rd pin 5th pin 8 12V CON7 1st pin 5th pin Not 0V 5V Fan Motor CON7 ...

Page 39: ...s Fan Motor voltage 8 12V Yes 3 Check the Fan motor Rotate fan using hand It feel sticky Yes Change the Fan motor Replace Main PCB No Reset the unit and Input Test1 Mode Push the button 1 time Go to 4 Fan Motor TEST MODE 1 Voltage V CON7 3rd pin 5th pin 8 12V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes 6 Explain to customer CON7 CON7 ...

Page 40: ... Fan Error E CF Symptom Check Point 1 E CF 1 Check the air flow 2 Check the Connector 2 Check the PCB Fan motor voltage TEST MODE 1 Voltage V CON7 4th pin 6th pin 8 12V CON7 2nd pin 6th pin Not 0V 5V Fan Motor CON7 ...

Page 41: ...or voltage 8 12V Yes 3 Check the Fan motor Rotate fan using hand It feel sticky Yes Change the Fan motor Replace Main PCB No Reset the unit and Input Test1 Mode Push the button 1 time Go to 4 Fan Motor TEST MODE 1 Voltage V CON7 4th pin 6th pin 8 12V 5 Check the Fan Motor voltage Is Fan Feed Back voltage 0V 5V No Change the motor Yes 6 Explain to customer Fan Motor CON7 CON7 ...

Page 42: ...k the loose connection 2 Check the Hinge connection Voltage V CON101 5th pin 6th pin 12V CON101 4th pin 5th pin Not 0V 5V CON101 5th pin 3th pin Not 0V 5V CON5 4th pin 6th pin Not 0V 5V CON5 4th pin 8th pin Not 0V 5V CON101 Display CON5 CON101 CON104 CON102 CON101 ...

Page 43: ...tage 0V or 5V Yes No Housing Voltage V CON101 4th pin 5th pin Not 0V 5V Change the Main PCB 4 Check the voltage Is CON101 5th pin 3rd pin voltage 0V or 5V Yes No Housing Voltage V CON101 5th pin 3rd pin Not 0V 5V Change the Display PCB 5 Check the voltage Is CON5 4th pin 6th pin voltage 0V or 5V Yes No Housing Voltage V CON5 4th pin 6th pin Not 0V 5V Change the Main PCB 6 Check the voltage Is CON5...

Page 44: ...eshooting Without Error Display 9 1 Cube mode doesn t work Symptom Check Point 1 Cube mode doesn t work 1 Check the loose connection 2 Check the resistance CON1 Ice Maker Geared Motor Dispenser Motor CON2 CON3 ...

Page 45: ... Voltage V CON2 3rd pin 4th pin Pushing 112 115V Not Pushing 0 2V CON3 5th pin CON1 13th pin Pushing 9 12V Not Pushing 0 2V Resistance Ω Geared Motor 31 1 42 1 Dispenser Motor 9 9 12 1 9 1 Cube mode doesn t work ...

Page 46: ...pushing the lever S W Is voltage correct compared with table No Yes LEVER S W Voltage V CON3 5th pin CON1 13th pin Pushing 9 12V Not Pushing 0 2V Change the PCB 4 Check the resistance value Is Geared Motor resistance 144 176 No Yes Replace Geared Motor Resistance Ω Geared Motor 31 1 42 1 5 Check the resistance value Is Dispenser Motor resistance 9 9 12 1 No Yes Replace Geared Motor Resistance Ω Di...

Page 47: ...9 2 Crush mode doesn t work Symptom Check Point 1 Crush mode doesn t work 1 Check the loose connection 2 Check the resistance Ice Maker Geared Motor Dispenser Motor CON1 CON2 CON3 ...

Page 48: ...mode doesn t work LEVER S W Voltage V CON2 3rd pin 12th pin Pushing 112 115V Not Pushing 0 2V CON3 5th pin CON1 13th pin Pushing 9 12V Not Pushing 0 2V Resistance Ω Geared Motor 31 1 42 1 Dispenser Motor 9 9 12 1 ...

Page 49: ... pushing the lever S W Is voltage correct compared with table No Yes LEVER S W Voltage V CON3 5th pin CON1 13th pin Pushing 9 12V Not Pushing 0 2V Change the PCB 4 Check the resistance value Is Geared Motor resistance 87 107 No Yes Replace Geared Motor Geared Motor Resistance Ω Geared Motor 31 1 42 1 5 Check the resistance value Is Dispenser Motor resistance 9 9 12 1 No Yes Replace Geared Motor Di...

Page 50: ...tom Check Point 1 Water mode doesn t work 1 Check the loose connection 2 Check the resistance valve LEVER S W Voltage V CON2 2nd pin 11th pin Pushing 112 115V Not Pushing 0 2V Resistance Ω Pilot Valve 360 420 Water valve 360 420 CON2 ...

Page 51: ... W Voltage V CON2 2nd pin 11th pin Pushing 112 115V Not Pushing 0 2V Change the PCB 3 Check the resistance value Is Pilot Valve resistance 360 420 No Yes Replace Water Valve Pilot Valve Resistance Ω Pilot Valve 360 420 4 Check the resistance value Is Water Valve resistance 360 420 No Yes Replace Water Valve Water Valve Resistance Ω Water valve 360 420 CON2 ...

Page 52: ...lamp doesn t work 1 Check the freezer door switch sticky 2 Check the door S W resistance 3 Check the LED Lamp Resistance Ω Door S W Normal Infinity Push S W 0 Voltage V CON6 20th pin 15th pin 12V Door S W LED Lamp Voltage V Blue Black Close d 0 2V Open 12V LED Lamp CON6 R LED F LED ...

Page 53: ...tage V CON6 20th pin 15th pin 12V 2 Check the door S W resistance Is it correct compared with table No Yes Change the Door S W Door S W 3 Check the PCB Voltage Is CON6 20th pin 15th pin voltage 12V No Yes Change the PCB 4 Check the LED Lamp voltage Is it 0 2V While door closed No Yes Change the Door S W 5 Check the LED Lamp voltage Is it 12V While door open No Yes Change the LED Lamp CON6 ...

Page 54: ... door S W resistance 3 Check the LED Lamp 9 5 Freezer room lamp doesn t work Resistance Ω Door S W Normal Infinity Push S W 0 Voltage V CON6 19th pin 17th pin 12V F Switch LED Lamp Voltage V Push Red WH White 12V No Push Red WH White 0 2V F room LED Door S W CON6 Hygiene Box Fan motor R LED F LED Hygiene LED ...

Page 55: ...LED Lamp voltage Is voltage 12V While door open No Yes Change the LED Lamp Resistance Ω Door S W Normal Infinity Push S W 0 Voltage V CON6 19th pin 17th pin 12V 2 Check the door S W resistance Is it correct compared with table No Yes Change the Door S W Door S W 3 Check the PCB Voltage Is CON6 19th pin 17th pin voltage 12V No Yes Change the PCB CON6 ...

Page 56: ...ow 3 Check the air Temperature 4 Check the R Damper motor voltage CON7 13th pin 14th pin Resistance Ω 23ºF 5ºC 38k 32ºF 0ºC 30k 41ºF 5ºC 24k 50ºF 10ºC 19 5k 59ºF 15ºC 16k Duct Status Air Flow Windy Air Temperature Cold TEST MODE 1 Voltage V CON7 10thpin 12th pin 8 12V CON7 8th pin 12th pin Not 0V 5V R Damper R Sensor Duct Fan Motor F Fan motor CON7 ...

Page 57: ... the fresh food door and Check the air flow D amper No Yes Check the damper Go to 5 4 Check the air temperature Is it cold No Yes Check the Compressor and sealed system TEST MODE 1 Voltage V CON7 8th pin 12th pin Not 0V 5V 5 Check the Fan Motor voltage Is Fan Motor voltage 8 12V Yes Replace Main PCB No TEST MODE 1 Voltage V CON7 10thpin 12th pin 8 12V 6 Check the Fan Motor voltage Is Fan Feed Back...

Page 58: ... Check the Fan motor voltage 9 7 Poor cooling in Freezer compartment Duct Duct Status Air Flow Windy Air Temperature Cold Fan Motor CON7 15th pin 16th pin Resistance Ω 22ºF 30ºC 40k 13ºF 25ºC 30k 4ºF 20ºC 23k 13ºF 25ºC 17k 14ºF 10ºC 13k 23ºF 5ºC 10k 32ºF 0ºC 8k TEST MODE 1 Voltage V CON7 10thpin 12thpin 8 12V CON7 8th pin 12th pin Not 0V 5V F fan motor F Sensor CON7 ...

Page 59: ... Check the sensor resistance 2 Reset the unit and Input Test1 Mode Push the button 1 time 3 Open the fresh food door and Check the air flow Windy No Yes Check the F Fan Motor Go to 5 4 Check the air temperature Is it cold No Yes Check the Compressor and sealed system 5 Check the Fan motor Rotate fan using hand It feel sticky Yes Change the Fan motor Fan Motor No CON7 ...

Page 60: ...V 5V 6 Check the Fan Motor voltage Is Fan Motor voltage 8 12V Yes Replace Main PCB No TEST MODE 1 Voltage V CON7 10thpin 12th pin 8 12V 7 Check the Fan Motor voltage Is Fan Feed Back voltage 1 5V No Change the motor Yes 8 Explain to customer CON7 CON7 ...

Page 61: ...Symptom Check Point 1 Hygiene fan doesn t work 1 Check Hygiene Fan motor voltage 2 Main PCB 9 9 Hygiene fan doesn t work Voltage V CON6 2ndpin 13th pin 12V Hygiene Fan motor CON6 ...

Page 62: ... 3 Check the Hygiene voltage Is voltage 12V While door open No Yes Change the Fan motor Voltage V CON6 2ndpin 13thpin 12V 2 Is the connector loose Yes No Connect the housing Choose the Hygiene Max in display Check the PCB Voltage Is CON6 2nd pin 13th pin voltage 12V CON6 ...

Page 63: ...Symptom Check Point 1 Hygiene LED doesn t work 1 Check Hygiene LED voltage 2 Main PCB 9 10 Hygiene LED doesn t work Voltage V CON6 4th pin 6th pin 12V Hygiene Fan motor CON6 ...

Page 64: ... Check the Hygiene LED voltage Is voltage 12V While door open No Yes Change the Fan motor Voltage V CON6 4th pin 6th pin 12V 2 Is the connector loose Yes No Connect the housing Choose the Hygiene Max in display Check the PCB Voltage Is CON6 4th pin 6th pin voltage 12V CON6 ...

Page 65: ...TPA 1 How to enter the TEST MODE Push the test button on the Main PCB to enter the TEST MODE 2 How to remove Terminal Position Assurance TPA 1 time Comp Damper All FAN on Everything is displayed 2 times Damper closed 22 22 displayed 3 times Forced defrost mode 33 33 displayed Main PWB AC TPA DC TPA ...

Page 66: ...F 10 C 59 F 15 C 68 F 20 C 77 F 25 C 86 F 30 C 95 F 35 C 104 F 40 C RESISTANCE 73 29 kΩ 53 63 kΩ 39 66 kΩ 29 62 kΩ 22 33 kΩ 16 99 kΩ 13 05 kΩ 10 10 kΩ 7 88 kΩ 6 19 kΩ 4 91 kΩ 3 91 kΩ 3 14 kΩ 2 54 kΩ 2 07 kΩ 1 69 kΩ 1 39 kΩ VOLTAGE 4 09 V 3 84 V 3 55 V 3 23 V 2 89 V 2 56 V 2 23 V 1 92 V 1 63 V 1 38 V 1 16 V 0 97 V 0 81 V 0 67 V 0 56 V 0 47 V 0 39 V ...

Page 67: ... C 59 F 15 C 68 F 20 C 77 F 25 C 86 F 30 C 95 F 35 C 104 F 40 C RESISTANCE 225 1 kΩ 169 8 kΩ 129 3 kΩ 99 30 kΩ 76 96 kΩ 60 13 kΩ 47 34 kΩ 37 55 kΩ 30 kΩ 24 13 kΩ 19 53 kΩ 15 91 kΩ 13 03 kΩ 10 74 kΩ 8 89 kΩ 7 40 kΩ 6 20 kΩ VOLTAGE 4 48 V 4 33 V 4 16 V 3 95 V 3 734 V 3 487 V 3 22 V 2 95 V 2 67 V 2 40 V 2 14 V 1 89 V 1 64 V 1 45 V 1 27 V 1 10 V 0 96 V ...

Page 68: ...bleshooting Step 1 Open PWB cover Step 2 Check for blinking frequency of LED PWB If compressor is normal it does not blink Refer to the next page to find out what actions to take according to how many times LED blink ...

Page 69: ...n on off repeating piston constraint 1 After resetting power check if it is running normal 2 If the same symptom arises after the first action replace PCB 3 If the same symptom arises after the second action replace compressor 3 LED six time repetiton on on on on on on off on on on on on on off repeating circuit overcurrent error 1 After resetting power check if it is running normal If the same sy...

Page 70: ...here is a fan motor malfunction this process is repeated 3 times If the fan motor is determined to be defective the error code will be shown in the display for 30 minutes At this point the process will be repeated until the fan motor operates normally If normal operation is achieved the error display is erased and the MICOM is reset automatically No signal Error Display 15s 10s 15s 10s 15s Normal ...

Page 71: ...e below 0 1ohm fuse m is a good condition But if infinite the part is bad How to Measure Sensor Set a ohmmeter to The 2housing pin Measure the 2 pin connected to Sensor If the ohmmeter indicate 11kΩ at room temperature Sensor is good When check the ohm at other temperatures Check the sensor manual Standard Sensor at room temperature Test Point 1 to 2 Temperature Fuse M at all temperature Test Poin...

Page 72: ...sistance How to Measure Set a ohmmeter connect to The 2 housing pin Measure the 2 pin connected to Sheath Heater If the ohmmeter indicate V øV Watt R is good condition ex when Watt 300W Voltage 120V R 120x120 300 48 Ω But if the ohm meter indicate infinity the Sheath heater is bad Standard Sheath heater at all temperature Test Point 1 to 2 Result 45 51Ω 1 2 ...

Page 73: ...1 3 Door Heater Assembly Function The heater is designed to prevent the door from sweating How to Measure Standard Test Point 1 to 2 Result 2 3 2 9 Check the Brown to Blue at CON2 on the sub PCB Sub PCB ...

Page 74: ...r open internal contact operate on and off moving plunger of door switch up and down How to Measure Switch Freezer Check the resistance between connectors 1 2 and 3 4 It means check whether or not applying an electric current If there is resistance the switch is good Standard Beep Multimeter beep Switch F Nomal Beep or 0 Push the button Plunger None Button Plunger 1 2 3 4 3 4 ...

Page 75: ...closed When the door open lamp on When the door open the switch give information to Micom When the door open internal contact operate on and off moving plunger of door switch up and down How to Measure Standard Status Result No magnet near the Switch Ω Magnet is near the Switch 1Ω ...

Page 76: ...C Motor Function Dispenser DC Motor When customer push the dispenser button Pull duct door and abstract from ice bank How to Measure Standard Dispensor DC Motor Dispenser DC Motor Test Points 1 to 2 Result 9 9 12 1 1 2 ...

Page 77: ...lenoid Test Points 1 to 3 Result 31 1 42 09 Separate the housing Measure the resistance between 1 and 2 Check the resistance between connectors In door motor 1 2 and In door motor 1 3 It means check whether or not applying an Electric current If there is resistance it means the geared motor or solenoid is not inferiority 1 2 3 1 1 2 Separate the housing Measure the resistance between 1 and 3 1 2 ...

Page 78: ...he damper is closed the chill rooms temperature will rise How to Measure Damper Circuit extension Check the Standard Damper Test Points Red and Yellow Result 373 456 Test Points Blue and White Result 373 456 Check to see if there is electrical current if there is resistance the damper is good 1 Blue 1 Blue 2 Red 3 White 3 White 1 3 Check the 2 4 Check the 1 3 3 Yellow ...

Page 79: ...nsor Function Flow Sensor in machine room Count the water quantity from city water to water filter in refrigerator How to Measure Standard Flow Sensor in machine room Test Points Red wire to Black wire Result 4 30 ...

Page 80: ...rial Number 4 Safety Approval Ex F L B 0 7 5 L N A 00 00 9 2003 5 13 0012 Series name DLF FA FB FLA FLB Operating Type A A Inverter E E Inverter Rated Voltage Frequency M 220V 50 60Hz N 115V 50 60Hz Efficiency version A 1st generation B 2nd generation Displacement ex 90 9 0cm stroke Application Category L LBP with R134a H HBP with R134a N LBP with R600a Buyer Code Model Code Line Serial No Date Ye...

Page 81: ...interval for first 30 seconds Step 2 Ramp up Stroke increases every 0 8sec until maximum stroke length is reached about 3 min 15 sec Step 3 CVCF interval 180V 60Hz Step 1 Start up Half stroke interval for first 20 seconds Step 2 Ramp up Stroke increases until maximum stroke length is reached about 1 min 40 sec Step 3 VVCF interval target voltage and frequency controlled by Control Board signals In...

Page 82: ...Power off CON201 Disconnect Power ON PCB OK Replace drver PCB Time 30sec Y V 200 Comp FLB075 A Inverter TEST1 Forced Starting TDC Full Stroke Display ON Buzz 1 time Ref Display sound Refer ...

Page 83: ... PC board located in the PCB case The control driver is PC board for the compressor This step shows the source voltage of the driver PC board Step 1 Open PCB Cover Step 2 Check Driver PCB Driver PCB located in machine room ...

Page 84: ...work and LED blinks Cause Possibly harness from compressor to PCB might be defective Case 2 If compressor works intermittently and LED blinks Cause Condenser Fan or Freezer Fan is not running Sealed system problem such as moisture restriction restriction at capillary tube or refrigerant leak Logic Compressor is forced to off and then tries to restart after 1 minute Blink Blink OFF Blink Blink OFF ...

Page 85: ......

Page 86: ...essor Intermittently Works Y Compressor Damage Check Replace Compressor N Reset Power Y Current trip occur Cycle check Repeat Check Procedure IPM Check Y Replace Driver PCB N N N N Y Replace Compressor Sealed system Repair Y Compressor Doesn t works Cycle blockage N Y ...

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Page 90: ...y Seal liquid foods with wrap Put in foods after they have cooled down Don t open the door too often and close it firmly Condensation forms in the Exterior Case Check if the ambient temperature and humidity of the surrounding air are high Is there a gap in the door gasket Wipe moisture with a dry cloth It will disappear in low temperature and humidity Fill up the gap There is abnormal noise Is the...

Page 91: ...g of the Refrigerant MOISTURE CLOG Cooling operation stops periodically Flowing sound of refrigerant is not heard and frost melts Lower than ambient temperature Cooling operation restarts when heating the inlet of the capillary tube CLOGGED BY DUST COMP RESSION Freezer and Refrigerator don t cool Low flowing sound of refrigerant is heard and frost forms in inlet only A little higher than ambient t...

Page 92: ...st Very Slow None Equalization Test Very Fast Fast Very Fast Inefficient Compressor Partial Restriction Complete Restriction Condenser Temperature Cap Tube Sound Yes No Air Low Side Leak Loss of Change Very Slow Faint Hotter than Normal None to Weak Room Temperature Compressor Not Pumping Trace of Oil Undercharge The equalization test is trying to restart a compressor using a start kit after it ha...

Page 93: ...y water to the ice tray by operating the solenoid valve To force water to supply to the ice tray or check icemaker s condition press and hold the FILL Key for about 3seconds In the test mode The icemaker will run through 3 stages step by step Harvest Fill water Ice making To reset the icemaker s operation set the power switch OFF position and back it to ON position Icemaker Unit Power Switch Ice T...

Page 94: ...assed to make one series of ices after water comes into icemaker Test Mode should not be carried out before checking below 13 2 3 Fill Park Position Once the normal harvest mode has been completed the water solenoid will be activated Not making ice Water Yes Yes No No No Temperature Time Is Icemaker s tray filled with water or Ice Is measured temperature below 10 F in the icemaker compartment How ...

Page 95: ...nosed Follow the procedure step by step to check to see if icemaker and Ice detecting sensor is working normally 1st STEP Icemaker Unit Diagnosis Press the fill key for about 3sec If the icemaker runs 2 stages of harvest and filling water step by step It means icemaker s mechanism is normal Caution Be sure that the ice tray is not filled with water before pressing fill key Icemaker Unit Fill Key I...

Page 96: ...ssibly warm air could get into the compartment and make ices get stuck Replace the cap duct with new one In door geared motor doesn t work Resolution Change the in door geared motor and test it The water comes out of fill cup and the water get into the ice bin Resolution The water pressure from shutoff valve is too high Recommend to use regulator to the customer and close the shutoff valve slightl...

Page 97: ... Power Save Mode 14 1 2 How to Toggle the Display between F C 1 The initial setting is F and the display temperature mode can be changed from F to C or C to F by pressing and holding the FRZ TEMP and the REF TEMP keys at the same time for over 5 seconds 14 1 3 Lock function dispenser and display button lock 1 When the refrigerator is first turned on the buttons are not locked LOCK is deactivated 2...

Page 98: ...ice plus function for quick freezing 2 When you press the Ice Type Ice Plus Button for 3seconds 3 Ice plus function automatically turns off after a fixed time passes 14 1 6 Dispenser use selection You can select water or ice by separated pad switch When you press ice type button ice type will be changed Crush or Cube Hold your cup in the dispenser for a few seconds after dispensing ice or water to...

Page 99: ... display mode and cancel it 1 With the refrigerator door open keep pressing the Refrigerator Temp Button and ICE PLUS Button more than 5 seconds then it goes to the display mode with Special Beep Sound With Special Beep Sound 2 Perform the same way again to cancel the display mode 3 All Freezing unit will be turned off at display mode Exceptions Lamp Display 14 1 7 CONTROL OF FREEZER FAN MOTOR 1 F...

Page 100: ... start upon the selected Auto Pantry temperature control 2 You can adjust the Pantry control with three different temperature ranges by pressing the Temp Selector button 14 1 14 Defect Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When a defect occurs the buttons will not operate but the tones such as ding will sound 3 When the defect CODE removes the sign it ret...

Page 101: ...319A 323B 410J 610C 903E 120B 319F 902C 329B 405J 405C 405F 405A 404B 319G 319B 329C 420A 405B 419B 312A 314A 307A 317A 105A 304A 410G 501F 103A 103B 501A 411A S38 281A 271B 104E 271A 145B 406B 282E 262H 128F 128E 105F 105G 282B B01 S01 106A 234B EV 611E 611F 607A 15 EXPLODED VIEW CASE PARTS 308A 310A 309A 412D 409B 282F 282D 145A ...

Page 102: ... EV 145C 145F 136D 132P 136A 131A 136B 136C 133A 133B FREEZER PARTS ...

Page 103: ... EV 167B 154A 151C 145G 151B 145J 154B 151A 145H 128A 128B 170A REFRIGERATOR PARTS 149E 141D 141E 149C 141A 140E 140D 141B 141A 140E 140D 141B 141A 140E 140D 141B ...

Page 104: ...12J 243D 262C 243A 231B 231A 230B 230A 212G 233B 233A 233J 212J 244A 243C 243B 262C 244A 262F 615A 619B 250A 250B 249F 621C 250B 249E 621B 250C 201A 200A 203A 212K 212K 212K 212K DOOR PARTS 611A 280A 113H 113J 405H 113F 282G 282H 113E B04 B04 212A 212C 212D ...

Page 105: ... EV 625A 623B 623B 616J 616J 627D 627B 627A 619A VALVE WATER TUBE PARTS ...

Page 106: ... EV 630J 630J 600C 606A 600A 600B 630F 630A 630H 630G ICEMAKER BIN PARTS ...

Page 107: ...Aug 2014 P No MFL62526051 ...

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