LG LMX25984ST/01 Service Manual Download

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12-3-1 SEALED SYSTEM DIAGNOSIS

“Not Cooling” Complaint

All components operating, No airflow problems, Not frosted up as a defrost problem

problem has been isolated to sealed system area

Frost

Pattern?

Partial

Equalization

Test

Very Slow

None

Equalization

Test

Very Fast

Fast

Very Fast

Inefficient

Compressor

Partial

Restriction

Complete

Restriction

Condenser

Temperature

Cap Tube

Sound

Yes

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 has been operating.)

Leak

Summary of Contents for LMX25984ST/01

Page 1: ...REFRIGERATOR SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL LMX25984ST 01 LMX25984WB 01 LMX25984SW 01 ...

Page 2: ...mbly Refrigerator Right Door Foam Assembly Refrigerator Door Foam Assembly Refrigerator Harness Assembly Harness Assembly Capacitor Electric Appliance Film Radial PCB Assembly Sub PCB Assembly Main Case PCB Guide Fan Tray Drip Compresser Set 315A 304A 312A 323B 230B 230A 231B 231A 303A 619E 410G 500H 500A 413A 319C 319A 300A Loc No Part Name LMX25984 01 ...

Page 3: ...ULLOUT DRAWER 14 17 4 ADJUSTMENT 17 19 5 CIRCUIT DIAGRAM 20 6 TROUBLESHOOTING Error Code 21 7 PCB PICTURE 22 23 8 TROUBLESHOOTING WITH ERROR DISPLAY 24 32 9 TROUBLESHOOTING WITHOUT ERROR DISPLAY 33 40 10 REFERENCE 41 46 11 COMPONENT TESTING INFORMATION 47 53 12 TROUBLESHOOTING Compressor 54 60 13 OPERATION PRINCIPLE AND REPAIR METHOD OF ICEMAKER 61 63 14 DESCRIPTION OF FUNCTION CIRCUIT OF MICOM 64...

Page 4: ...c Heater Defrost Embossed Metal VCM Stainless Bar ABS Resin Polyurethane Foam DOOR DESIGN DIMENSIONS inches NET WEIGHT pounds COOLING SYSTEM TEMPERATURE CONTROL DEFROSTING SYSTEM DOOR FINISH HANDLE TYPE INNER CASE INSULATION ITEMS SPECIFICATIONS Description LMX25984 Depth w Handles Depth w o Handles Depth w o Door Depth Total with Door Open Height to Top of Case Height to Top of Door Hinge Width W...

Page 5: ...storage needs MODULAR DOOR BINS Three interchangeable bins can be arranged to suit your storage needs REMOVABLE ICE STORAGE BIN The ice storage bin can be removed to fill ice buckets coolers or pitchers INTERIOR LAMPS Two separate LED arrays light the freezer and refrigerator interiors FIXED DOOR BIN FIXED DOOR BIN INTERIOR LAMP 1 2 3 4 ...

Page 6: ...be careful that door does not fall forward 7 Place door inside facing up down onto a non scratching surface Right Door FIG 3 1 Open door Loosen top hinge cover screw 1 Lift up cover 2 2 Disconnect door switch wire harness Remove cover 3 Disconnect wire harness 3 4 Remove the grounding screw 4 5 Rotate hinge lever 5 clockwise Lift top hinge 6 free of hinge lever latch 7 CAUTION When lifting hinge f...

Page 7: ... securely into place Note Make sure that no part of gasket bracket edge protrudes from beneath door frame edge 2 Remove gasket bracket clips There are two clips on each door Start bracket removal near one of the middle clips 1 Pull gasket back to expose gasket bracket clip and door frame 2 Insert a flat tip screwdriver into seam between gasket bracket and door frame and pry back until clips snap o...

Page 8: ...32 wrench 3 Use the wrench Included with the User Manual to adjust the bolt in the door hinge to adjust the height CCW to raise or CW to lower the height 3 4 FAN AND FAN MOTOR EVAPORATOR 1 Remove the freezer shelf If your refrigerator has an icemaker remove the icemaker first 2 Remove the plastic guide for slides on left side by unscrewing phillips head screws 3 Remove the grille by removing one s...

Page 9: ... defrosting 1 Pull out the grille assembly Figure 10 2 Separate the connector with the Defrost Control assembly and replace the Defrost Control assembly after cutting the Tie Wrap Figure 11 Figure 10 Figure 11 GRILLE ASSEMBLY DEFROST CONTROL ASSEMBLY Cover Lamp LED Assembly Case Lamp 3 6 LAMP Unplug Refrigerator or disconnect power at the circuit breaker If necessary remove top shelf or shelves 1 ...

Page 10: ...UTION When replacing the dispensor cover in the reverse order of removal be careful that the lead wire does not come out and the water tube is not pinched by the dispensor 3 If nozzle is interfered with button push and pull out the bottom of button 4 Rmove the connected part of Lead wire 3 10 DISPLAY PCB As shown below remove 1 case PCB fixing screw Remove the display PCB fixing screw 3 11 ICE BUT...

Page 11: ...own in the first picture 2 Disconnect the wire harness ground screw replace theIcemaker assembly in the reverse order of removal 3 14 DUCT DOOR REPLACEMENT 1 Pull up and out on the dispenser cover to remove 2 Disconnect the wire harness 3 Remove the funnel 4 Replace in reverse order 3 It separates a ground connection screw 3 13 WATER BUTTON ASSMEBLY 1 Romove screws 2 Grasp the Button assembly and ...

Page 12: ... screws holding the auger motor cover shown in the picutres below 2 Grip the bottom of motor cover assembly and pull out it 3 Disconnect wire harness of motor cover assembly There is a auger motor on the back as shown in the picture Auger Motor Icemaker Power Full detection Signal ...

Page 13: ...icture 3 21 HOW TO INSERT A DOOR ICE BIN 1 Insert the Ice Bin slightly tilting it to avoid touching the Icemaker especially ice maker lever Insert the ice bucket carefully avoid contacting the automatic shut off arm 2 Lift the lower part slightly 3 Take the Ice Bin out slowly ...

Page 14: ...emove 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 Step 4 Lift the freezer door up to unhook it from the rail support and remove Pu...

Page 15: ...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 the two screws into the guide rails one from each side Step 7 Reinstall the lower basket and close the freezer door Step 3 Insert the rail into the left side gear and insert the gear i...

Page 16: ...ut the Cilp Then press te collet to separate the tube from the connector and pour out the water until emptied Mechanical Cover Housing MOTOR COVER 2 Pull and separate the FAN ASSEMBLY and MOTOR turning counterclockwise based on the MOTOR SHAFT The assembly is in the reverse order of the disassembly and take special care for the following details 1 Be careful not to bend the tube during assembly 2 ...

Page 17: ...rawer open to full extension Remove the drawer and Ice Bin lifting the basket from the rail system 3 26 BOTTOM DRAWER To remove the freezer drawer pull the drawer open to full extension Remove the lower DuraBase basket by lifting the basket from the rail system ...

Page 18: ... and low pressure 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 o...

Page 19: ...sor protection 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 th...

Page 20: ...rent 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 1 Fig 1 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...

Page 21: ... 21 5 CIRCUIT DIAGRAM ...

Page 22: ...hen F B signal isn t over 65 seconds during Brushless DC FAN motor operating Poor BLDC Motor connection DRIVE IC and TR 8 Abnormality of Brushless DC FAN Motor for Freezer Er FF It is caused when F B signal isn t over 65seconds during Brushless DC FAN motor operating Poor BLDC Motor connection DRIVE IC and TR 9 Abnormality of Brushless DC FAN Motor for Mechanic Room Er CF It is caused when F B sig...

Page 23: ... 23 7 PCB Picture 7 1 Main PCB P No MFG EBR673480 2010 02 Picture CON4 CON5 CON8 CON3 CON2 CON1 ...

Page 24: ... 24 CON2 7 2 Display PCB Sub PCB P No Display PCB EBR42478905 2010 02 Sub PCB EBR60070708 2010 02 Picture CON3 CON1 CON103 CON104 CON102 CON101 ...

Page 25: ...stance Table 1 Result SVC Action 8 1 Freezer Sensor Error Er FS No 1 2 Checking flow Check for a loose connection Check the Blue White to Blue White Result SVC Action CON4 Temperature table 1 1 To 2 22 F 30 C 13 F 25 C 4 F 20 C 5 F 15 C 14 F 10 C 23 F 5 C 32 F 0 C Result 40 30 23 17 13 10 8 The sensor is determined by the temperature For example 23 indicates 4 F ...

Page 26: ...n Temperature table 2 1 To 2 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 30 24 19 5 16 The sensor is determined by the temperature For example 30 indicates 32 F CON4 0 Infinite ohms See resistance table Short Open Normal Change the sensor Replace the refrigerator Check the Temp and resistance Table 2 Result SVC Action ...

Page 27: ... 23 17 13 10 8 The sensor is determined by the temperature For example 23 indicates 4 F CON101 Display CON101 0 Infinite ohms See resistance table Short Open Normal Change the sensor Check the resistance of the defrost sensor wires back to the main PCB If they are open between the Main PCB and the connector for the icemaker it will be necessary to replace the refrigerator Check the Temp and resist...

Page 28: ...dS No 1 2 Checking flow Check for a loose connection Check the Orange to Orange Result SVC Action Check the Brown to Brown CON4 The sensor is determined by the temperature For example 23 indicates 4 F 0 Infinite ohms See resistance table Short Open Normal Change the sensor Replace the refrigerator Check the Temp and resistance Table 3 Result SVC Action ...

Page 29: ...ON3 CON3 Result 112 116 V 0 V SVC Action Go to the 5 Replace Main PCB 6 Check the Blue to Orange Result 0 V 112 116 V SVC Action Normal Replace Main PCB Fuse M Defrost Heater Defrost Sensor 0 34 42 0 Infinite ohms Go to the 3 Change Fuse M Go to the 3 Change Fuse M Go to the 3 Check the resistance of the defrost sensor wires back to the main PCB If they are open between the Main PCB and the connec...

Page 30: ...ror code is displayed the fan is not working 3 Check the Fan motor Rotate fan using your hand It feel stuck or locked up change the motor Cause of ice or rust inside of motor 4 Check the Fan motor voltage Result SVC Action Below 12 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Point Result SVC Action CON4 Status No airflow Airflow SVC Action Go to 3 Go to 4 1 2 3 ...

Page 31: ...the PCB short Tip To protect ice short add wire seal in connector We developed new type connector so order the new type 4 Check the Fan motor Frozen Lock ect Result SVC Action 5 Check the Fan motor voltage Below 9 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Result SVC Action Duct Asm Connector 407A ADJ7291 1301 ADJ7291 1301 Part Name Old P No New P No No Status No airflow Airflow SVC Action...

Page 32: ...ror code is displayed the fan is not working 3 Check the Fan motor and surrounding Rotate fan using your hand It feel stuck or locked up change the motor Result SVC Action 4 Check the Fan motor voltage Below 10 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Result SVC Action Status No airflow Airflow SVC Action Check motor Go to the 4 CON4 1 2 3 ...

Page 33: ... CON5 6 Check the White Red to White Black CON5 CON101 Display CON0101 3 Check the Orange to White Red Result 0 V or 5 V Other SVC Action Change the Display PCB Go to the 4 4 Check the White Black to White Red Result 0 V or 5 V Other SVC Action Change the Main PCB Go to the 5 Result 0 V or 5 V Other SVC Action Change the Display PCB Go to the 6 Result 0 V or 5 V Other SVC Action Change the Main PC...

Page 34: ...the resistance value Ice Maker Geared Motor Dispenser Solenoid 2 1 3 4 Activated Not activated 112 115 V Other 0 2 V Other Go to the 3 Change PCB Go to the 3 Change PCB Lever s w Result SVC Action Activated Not activated 112 115 V Other 0 2 V Other Go to the 4 Change PCB Go to the 4 Change PCB Lever s w Result SVC Action 1 to 2 3 to 4 31 1 42 1 Other 44 54 Other Normal Replace Geared Motor Normal ...

Page 35: ...e Ice Maker Geared Motor Dispenser Solenoid 2 1 3 4 Activated Not activated 112 115 V Other 0 2 V Other Go to the 3 Change PCB Go to the 3 Change PCB Lever s w Result SVC Action Activated Not activated 112 115 V Other 0 2 V Other Go to the 4 Change PCB Go to the 4 Change PCB Lever s w Result SVC Action 1 to 2 3 to 4 31 1 42 1 Other 44 54 Other Normal Replace Geared Motor Normal Replace Dispenser S...

Page 36: ...e Machine Room Water Valve In door Activated Not activated 112 115 V Other 0 2 V Other Go to the 3 Change PCB Go to the 3 Change PCB Lever s w Result SVC Action Activated Not activated 112 115 V Other 0 2 V Other Go to the 4 Change PCB Go to the 4 Change PCB Lever s w Result SVC Action 1 to 2 3 to 4 360 420 Other 360 420 Other Normal Replace Water Valve Normal Replace Water Valve Point Result SVC ...

Page 37: ...e 4 Check the Blue to Black Check the Blue to Black Closed Open 0 2 V Other 115 V Other Normal Change the Main PCB Change the F Lamp Change the PCB Status Result SVC Action Closed Open 5 V Other 0 V Other Go to the 4 Change the Door S W Go to the 4 Change the Door S W Status Result SVC Action Normal Push S W 0 Other Infinity Go to the 3 Change door S W Go to the 3 Change door S W Status Result SVC...

Page 38: ...he Red to Black Closed Open 0 2 V Other 12 V Other Normal Change the Door S W Normal Change the LED Lamp Status Result SVC Action Normal Push S W 0 Other Infinity Other Go to the 3 Change door S W Go to the 3 Change door S W Status Result SVC Action Normal 12 V Other Go to the 4 Change the PCB Status Result SVC Action Normal 12 V Other Go to the 5 Change the LED Lamp Status Result SVC Action 5 Che...

Page 39: ...ow The sensor is determined by the temperature For example 30 indicates 32 F Result SVC Action CON4 Temperature 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 30 24 19 5 16 Status Airflow No airflow SVC Action Go to the 4 Check the R Fan motor Check the damper Go to the 6 4 Check the air temperature Cold or not Status Cold Not cold SVC Action Normal Check the Compressor And sealed system...

Page 40: ...ction 7 Check the F Fan motor voltage 1 3 2 4 Open Closed Not working 1 Mode 2 Mode 1 2 mode Damper is normal Check the Damper Change the damper Test Mode Damper State SVC Action 1 to 2 3 to 4 270 330 Other 270 330 Other Normal Change damper Normal Change damper Test Point Result SVC Action Below 12 V 0 or 5 V 1 2 2 3 Change the PCB Change the motor Point Result SVC Action Stuck Motor Change the m...

Page 41: ...air flow The sensor is determined by the temperature For example 23 indicates 4 F Result SVC Action Status Airflow No airflow SVC Action Go to the 4 Check the F Fan motor 4 Check the air temperature Cold or not Status Cold Not cold SVC Action Normal Check the Compressor And sealed system 1 To 2 22 F 30 C 13 F 25 C 4 F 20 C 5 F 15 C 14 F 10 C 23 F 5 C 32 F 0 C Result 40 30 23 17 13 10 8 CON4 ...

Page 42: ... refrigerator door and Check the air flow The sensor is determined by the temperature For example 30 indicates 32 F Result SVC Action Temperature 23 F 5 C 32 F 0 C 41 F 5 C 50 F 10 C 59 F 15 C Result 38 30 24 19 5 16 Status Airflow No airflow SVC Action Go to the 4 Check the R Fan Check the damper Go to the 5 4 Input Test 2 Mode and Check the air flow Push the button 1 time 5 Check the damper resi...

Page 43: ...o enter the TEST MODE If you push the test button on the Main PCB the refrigerator will be enter the TEST MODE 2 How to remove Terminal Position Assurance TPA 1 time Comp Damper All FAN on All things displayed Main PWB AC TPA DC TPA 2 times Damper closed 22 22 displayed 3 times Forced defrost mode 33 33 displayed ...

Page 44: ...3 F 5 C 32 F 0 C 41 F 5 C 50 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 53 63 39 66 29 62 22 33 16 99 13 05 10 10 7 88 6 19 4 91 3 91 3 14 2 54 2 07 1 69 1 39 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 45: ...23 F 5 C 32 F 0 C 41 F 5 C 50 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 225 1 169 8 129 3 99 30 76 96 60 13 47 34 37 55 30 24 13 19 53 15 91 13 03 10 74 8 89 7 40 6 20 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 46: ... 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 Norma...

Page 47: ...oosen up screw of Case Assembly PCB and open the Cover PCB 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 48: ... the same symptom arises after the first action 3 If the same symptom arises after the second action replace compressor Circuit over current error Or cycle error 1 After resetting power check if it is running normal 2 If the same symptom arises after the first action 3 If the same symptom arises after the second action replace compressor PCB parts defect IPM 1 After resetting power check if it is ...

Page 49: ...ormation to Micom How to Measure Fuse M Measure the 2 pin connected to Fuse M If the ohmmeter indicate below 0 1ohm Fuse M is good If Fuse M measures infinite ohms it is open and needs to be replaced How to Measure Sensor Measure the 2 pin connected to Sensor If the ohmmeter indicate 11 at room temperature It is normal Checking the resistance at other temperatures check the sensor resistance chart...

Page 50: ... How to Measure Measure the 2 pin connected to Sheath Heater If resistance is between 34 42 ohms the heater is normal If it measures infinite ohms the heater is open and needs to be replaced Standard Sheath heater at all temperature Test Point 1 to 2 Ressult 34 42 1 2 ...

Page 51: ... 51 11 3 Door Heater Assembly Function The heater is designed to prevent the exterior moisture on the door How to Measure Standard Test Point 1 to 2 Ressult 1 674 1 926 1 2 3 5 8 9 4 6 7 ...

Page 52: ...closed by sending a signal to the Main PCB How to Measure Switch Freezer Switch Refrigerator Check the resistance between connectors 1 2 and 3 4 Standard Beep Beep Multimeter beep Switch F R Nomal 0 Push the button Plunger None Button Plunger 1 2 3 4 3 4 2 1 1 2 3 4 ...

Page 53: ...enoid Function Dispenser solenoid When customer push the dispenser button Pull duct door and abstract from ice bank How to Measure Standard Dispenser Solenoid Dispenser Solenoid Test Points 1 to 2 Result 44 54 1 2 ...

Page 54: ... 2 3 4 Terminal of solenoid Geared Motor Standard Geared Motor Test Points 1 to 2 Result 2 38 4 02 Cube Solenoid Test Points 1 to 3 Result 32 40 Take out the male housing from female housing Measure the resistance between 1 and 2 Check the resistance between connectors Geared motor 1 2 and solenoid 3 4 It means check whether or not applying an Electric current If there is resistance it means the g...

Page 55: ...ator section 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 the resistance between connectors 1 3 and 2 4 1 Blue 1 Blue 2 Red 3 White 3 White 1 3 Check the 2 4 Check the 1 3 3 Yellow ...

Page 56: ...ant 3 Serial Number 4 Safety Approval Ex F C 7 5 L A N E 00 00 9 2003 5 13 0012 Series name DLF FA FB 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 0 stroke Application Category L LBP with R134a H HBP with R134a N LBP with R600a Buyer Code Model Code Line Serial No Date Year V...

Page 57: ... up Stroke increases every 0 8sec until maximum stroke length is reached about 1 min 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 VVVF interval target voltage and frequency controlled by Control Board signals FCT0 Stroke Trip Locked Piston Trip Current Trip I...

Page 58: ...ure with a multi tester There is a PCB located in the PCB case next to the compressor That is the driver PCB the linear compressor E Inverter FC75LANE A Inverter FC90LANA Multi Tester Multi Tester E Inverter A Inverter IPM Voltage Check To ensure proper diagnosis make sure that the unit has been plugged in for at least 10 min To determine if the compressor is receiving the proper voltage check the...

Page 59: ...citor Spec 450V 18uF 5 Po Power Co Common N C No Connecting Compressor Winding Resistance Check 6 8 Ω Between Po and Co FC75LANE Po N C Co Capacitor Spec 550V 10uF 5 Po Power Co Common N C No Connecting Compressor Winding Resistance Check 6 8 Ω Between Po and Co 6 8 Ω 6 8 Ω Inf Inf NOTE Any Terminal to Ground should read Inf GN GND ...

Page 60: ...rly 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 t...

Page 61: ...ambient temperature Normal discharging of the refrigerant The capillary tube is faulty WHOLE CLOG Freezer compartment and Refrigerator don t cool Flowing sound of refrigerant is not heard and frost isn t formed Equal to ambient temperature Normal discharging of the Refrigerant MOISTURE CLOG Cooling operation stops periodically Flowing sound of refrigerant is not heard and frost melts Lower than am...

Page 62: ...Test 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 ...

Page 63: ...in is full Park Position Reaches Start Position Fill Performs Ice Making Mode after supplying water by operating the SOLENOID in ICE VALVE Test Mode To operate LINE and SERVICE press and hold the Fill Key for 3 seconds The icemaker will run through 3 stages Harvest Fill Icemaking 1 Turning the Icemaker stop switch off O stops the ice making function 2 Setting the Icemaker switch to OFF and then tu...

Page 64: ...ty of ice in the ice storage bin while rotating with the EJECTOR A Ice storage bin is full The EJECTOR stops heater off B Ice storage bin is not full The EJECTOR rotates twice to open for ice If the EJECTOR does not rotate once within 5 minutes in B mode separate heater control mode starts operating to prevent the EJECTOR from being constrained It is recommended that the user open for ice to retur...

Page 65: ... sure that the wire on each sensor is connected CONTENTS None Open or short circuited wire 13 3 DEFECT DIAGNOSIS FUNCTION 13 3 1 ERROR CODES shown on Ice Maker water supply control panel 13 2 5 Function TEST 1 This is a forced operation for TEST Service cleaning etc It is operated by pressing and holding the Fill Key for 3seconds 2 The test works only in the Icemaking Mode It cannot be entered fro...

Page 66: ... deactivated with no light on 2 To lock the display the dispenser and the control panel press and hold the LOCK button for 3 seconds LOCK is activated with light off 3 The LOCK button is the only control feature that remains active in the locked state The buzzer sound other control buttons and the dispenser are deactivated 4 To release from the locked state press and hold the LOCK button again for...

Page 67: ...agnosis function table for failure display 14 1 9 Icing Fan 1 The Icing Fan is controlled by the the sensor on the top of the ice room 2 The Failure sensing mathod is the same as in the fan motor of the freezer refer to failure diagnosis function table for failure display 14 1 5 Ice Plus selection Please select this function for quick freezing When you press the Ice Plus Button the Ice Plus ICON w...

Page 68: ...on will start seven minutes after defrost is completed and it shall operate for three hours 4 If Ice Plus is selected within seven minutes after compressor has stopped the compressor compressor delays seven minutes shall start after the balance of the delay time 5 The fan motor in the freezer compartment runs at high speed during ICE PLUS 6 For the rest of the 21 hours the freezer will be controll...

Page 69: ...nosis function 8 1 14 4 Defrosting won t function if its sensor is defective wires are cut or short circuited 14 1 14 Defect Diagnosis Function 1 Automatic diagnosis makes servicing the refrigerator easy 2 When a defect occurs the buttons will not operate 3 When the defect CODE removes the sign it returns to normal operation RESET 4 The defect CODE shows on the Refrigerator and Freezer Display LED...

Page 70: ... 120A 409D 503D 158A S11 120B 282G S08 145A 282F 302B S14 262B B02 106A 106A 323B 319A 319C S20 420A 309B 329C 312C 312A 310B 314A 300A 318A 105A 317A 249M 262H S14 249D 249C B02 S12 S12 145B 610A S10 271D B01 610D 207A S03 402A 406D 610B 313A 411A 500A 408A 405F S17 B04 315C 315B 315B 315C 407B 315A 103C 404A 405C 405B 329A 400A 304A 249L 406B 409B 158B 504A 290A 500H 410G 413A 303A 332C S16 407A...

Page 71: ... 2 FREEZER PARTS CAUTION Use the part number to order part not the position number 131A 250G 203D 136B 250G 251A 251B 237C 136A 203C ...

Page 72: ...OR PARTS CAUTION Use the part number to order part not the position number on some models 162A 145D 162B 146E 151A 151C 161A 151B 154A 141D 161C 161B 141C 141B 141A 141C 141B 141A 141A 141B 141C 140A 142D 142B 142A ...

Page 73: ...241B 234A 233D 233A 231A 212G 234C B05 250B 249E 249J 203A 201A 200A 200B 249F 250B 249K B06 212D 250B 249E 249J B06 212D B06 250A 203B 201B 249K 250B 249F B06 244A B05 243A 243D 262C 262E 241H 241G 241J 312B B05 244A 615A 619B 250A 262C 243B 243C 233C 234D 233B 231B 230B 230A B05 241D 241D 241E ...

Page 74: ... 5 DISPENSER PARTS CAUTION Use the part number to order part not the position number 402C 279J 279H 279B 279G 500E 500D 501D 278D 281B 281A 279A 279C 501A 279D 500C 279E 405A 276B 275A 276A ...

Page 75: ... 6 ICE MAKER PARTS CAUTION Use the part number to order part not the position number 619E 603B 619A 627A 627B 616F 616D 625A 616G 623B 616G 623B 616J 603C 616D 616J 617A S31 S31 ...

Page 76: ... 7 ICE BANK PARTS CAUTION Use the part number to order part not the position number 6 630C 6 606A 614A 630E 630D 630L 630N 630M 630K 630A 630C 630F 630B 611A 600A 630J 600B 612A 630H 630G ...

Page 77: ...P No MFL48178826 NOV 2011 Printed in Korea ...

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LG LMX25984ST/01, Service Manual

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