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LG LD1454WBFES2, Service Manual

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LG LD1454WBFES2 Service Manual Download Page 36

Drain Error

Is            displayed?

Yes

Does the drain motor operate?

How to check the water supply

①

 press 3 buttons at the same time.

(Half load, Delay start and Power)

② 

press ‘Delay start’ button 2 times

Motor rpm is not increased.

Motor rpm is increased.

Is the filter clogged?

Clean the filter

No

Is the connector connected to 

main PCB assembly disconnected 

or disassembled? (YL3 : Pump signal)

No

Yes

Reconnect or 

repair the connector.

Is the connector connected to 

drain motor disconnected 

or disassembled? 

Reconnect or 

repair the connector.

Is the voltage between connectors

out of range?(YL3 pin1~pin2~pin3)

- After remove terminal position 

assurance (TPA) of connector, 

check the voltage when water is 

drained.(The voltage is over 5V AC)

No

Replace the main

PCB assembly.

Yes

Is the outer drain hose

kinked or blocked or frozen?

Remove the cause of kink

or block.

No

Is the inner drain hose

and drain case

kinked or blocked or frozen?

Remove the cause of kink

or block.

Is the resistance values between 

connectors out of range? 

(range is 4~5

Ω

)

(Yellow 3P, pin1~pin2~pin3)

Yes

No

Replace the drain

motor

Yes

Yes

Yes

Yes

Condition.

Not fully drained out in

 

spite of 5 min. drain

 

operati

on.

 

36

Summary of Contents for LD1454WBFES2

Page 1: ...ASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES NOTE MODEL LD1455W L M T B C FCS2 LD1454W L M T B C FES2 LD1453W L M T B C FEN2 LD1452W L M T B C FEN2 You may also find user manual in video version at following link www lg com steamdishwasher ...

Page 2: ......

Page 3: ...IFICATIONS 3 PARTS NAME 4 FEATURES TECHNICAL EXPLANATION 5 WIRING DIAGRAM 6 PROGRAM CHART SCHEMATIC DIAGRAM 7 HOW TO DISASSEMBLE 8 TROUBLE SHOOTING METHODS 9 INSTALLATION INSTRUCTION 10 EXPLODED VIEW 4 5 6 8 19 21 23 34 47 51 3 ...

Page 4: ...ividuals possessing adequate backgrounds of electrical electronic and mechanical experience Any attempt to repair this appliance may result in personal injury and property damage The manufacturer or seller can not be responsible for the interpretation of this information nor can it assume any liability in connection with its use CAUTION 4 ...

Page 5: ... ck k N Ny yl lo on n C Co oa at ti in ng g U Up pp pe er r R Ra ac ck k A Au ut to o A Ad dj ju us st ta ab bl le e L Lo ow we er r R Ra ac ck k W Wa at te er r C Co on ns su um mp pt ti io on n ℓ ℓ P Po ow we er r C Co on ns su um mp pt ti io on n k kW Wh h O Op pe er ra at ti in ng g T Ti im me e m mi in n 2 26 67 7 F Fa an n D Dr ry y S Sy ys st te em m Y Ye es s D De el la ay y S St ta ar rt ...

Page 6: ...t Hose 9 Power Cord 10 Adjustable Leg 11 Upper Rack 12 Cutlery Basket 13 Detergent And Rinse Aid Dispenser 14 Vapor Vent Cover 15 Upper Spray Arm 16 Lower Spray Arm 17 Filter ASM 18 Lower Rack 19 Salt Container Cap 20 Cutlery Rack 21 Steam Nozzle Steam models only The appearance and specifications may vary without notice 6 ...

Page 7: ...ain Hose 8 Inlet Hose 9 Power Cord 10 Adjustable Leg 11 Upper Rack 12 Cutlery Basket 13 Detergent And Rinse Aid Dispenser 14 Vapor Vent Cover 15 Upper Spray Arm 16 Lower Spray Arm 17 Filter ASM 18 Lower Rack 19 Salt Container Cap The appearance and specifications may vary without notice Funnel 7 ...

Page 8: ...ults in washing without pre or after washing dishes by hand 4 1 3 Eco frendly LG dishwashers are designed in a way that puts both cleaning performance and energy efficiency first An innovative system enabling an efficient transfer of energy the Inverter Direct Drive Motor is what makes the LG dishwasher one of the most energy efficient high performance lines in the industry 4 1 4 Washing performan...

Page 9: ... 3 seconds while the dishwasher is in operation All controls will be disabled except the Child Lock and Power buttons Turning off the dishwasher will not reset the Child Lock function You must release the Child Lock before you can operate the dishwasher Spray With each press the water spray intensity level is changed to Soft Medium and Strong in a sequence Only Eco Steam Care and Steam Dual Spray ...

Page 10: ... Off The dishwasher must be switched on The beep on off function can be set by pressing the Spray and Delay Start button simultaneously for a few seconds ON or OFF will be displayed retrospectively Steam TheSteam symbol light will stay on when the Steam course has been selected Indicator Child Lock Refill with special salt Refill with rinse aid Time Left Before starting the display window shows th...

Page 11: ...ction press the Child Lock button for 3 seconds while the dishwasher is in operation All controls will be disabled except the Child Lock and Power buttons Turning off the dishwasher will not reset the Child Lock function You must release the Child Lock before you can operate the dishwasher Spray With each press the water spray intensity level is changed to Soft Medium and Strong in a sequence Only...

Page 12: ... Off The dishwasher must be switched on The beep on off function can be set by pressing the Spray and Delay Start button simultaneously for a few seconds ON or OFF will be displayed retrospectively Steam TheSteam symbol light will stay on when the Steam course has been selected Indicator Child Lock Refill with special salt Refill with rinse aid Time Left Before starting the display window shows th...

Page 13: ...for 3 seconds while the dishwasher is in operation All controls will be disabled except the Child Lock and Power buttons Turning off the dishwasher will not reset the Child Lock function You must release the Child Lock before you can operate the dishwasher Spray With each press the water spray intensity level is changed to Soft Medium andStrong in a sequence Only Eco Steam Care and Steam Dual Spra...

Page 14: ...ramme press thePower button twice Indicator Child Lock Refill with special salt Refill with rinse aid Time Left Before starting the display window shows the running time of the selected programme except for the Auto programme After starting the display window shows the remaining time If the dishwasher has a problem the error type will be displayed OE FE IE EI HE LE tE If these error letters are di...

Page 15: ...xtra Hot setting is on Lamp will turn on when the Child Lock setting is on Time Left Before starting the display window shows the running time of the selected program except for the Auto programme After starting the display window shows the remaining time If the dishwasher has a problem the error type will be displayed OE IE EI FE HE tE LE If these error letters are displayed please refer to the t...

Page 16: ...e setting from being changed by a child To activate or release the Child Lock function press the Quick Dry and Quick buttons simultaneously for a few seconds while the dishwasher is in operation All controls will be disabled except the Child Lock and Power buttons Turning off the dishwasher will not reset the Child Lock function You must release the Child Lock before you can operate the dishwasher...

Page 17: ... d xx U xx n xx d xx U xx n xx d xx U xx n xx d xx U xx 4 time Sensing value 5 time Nothing 6 time n06 Regeneration Valve 7 time AG water level LD1455 LD1454 Displaying H170 L170 by turns LD1453 Aqua Stop 8 time Pump RPM Drain Pump More than 3000rpm 9 time Water Level Aqua Stop 10 time Sump heater Washing motor RPM Sump Thermostat 1 Washing Motor 1600rpm for 10sec 2 Sump heater on after Washing mo...

Page 18: ... time Nothing Closed 6 time n06 Regeneration Valve Closed 7 time Aqua Stop Closed 8 time Pump RPM Drain Pump More than 3000rpm 9 time Water Level Aqua Stop Closed 10 time Sump heater Washing motor RPM Sump Thermostat 1 Washing Motor 1600rpm for 10sec 2 Sump heater on after Washing motor operating for 3sec Electric Power Less than 2000W Closed 11 time Cr LO LQC Auto mode Vario Lower position Washin...

Page 19: ...5 WIRING DIAGRAM 19 ...

Page 20: ...20 ...

Page 21: ... 15 Frequency Temp 295 280 AG 50 265 60 265 70 Second 20 2 30 20 2 43 2 15 2 15 2 20 43 2 15 2 15 2 20 43 2 15 2 15 2 20 43 2 15 2 15 2 20 12 12 90 12 90 20 Minute 5 3 6 15 10 15 2 5 7 15 Frequency Temp 295 280 AG 50 265 60 265 70 Second 20 2 30 20 2 43 2 15 2 15 2 20 43 2 15 2 15 2 20 43 2 15 2 15 2 20 43 2 15 2 15 2 20 12 12 90 12 90 20 Minute 5 3 6 20 10 15 2 5 7 15 Frequency Temp 295 280 AG 50...

Page 22: ...y Temp 283 28 274 43 274 40 283 38 283 65 Second 20 2 43 90 10 14 16 50 10 43 1 16 1 10 1 10 1 20 10 20 43 2 16 1 10 1 10 1 10 1 20 10 20 43 2 20 20 20 43 2 15 2 15 2 20 12 12 90 12 90 20 Minute 8 24 16 16 24 2 5 7 15 Frequency Temp 312 45 302 283 283 65 Second 20 2 43 90 1 16 1 10 1 10 1 20 43 2 16 1 10 1 10 1 20 20 20 43 2 16 1 10 3 10 2 20 20 20 43 2 15 2 15 2 20 12 12 90 12 90 20 Minute 8 49 3...

Page 23: ...n the water softener cap to flow out the water to sump and drain to avoid the floor wet 6 If necessary remove the inlet hose and drain hose to avoid the hose damages 7 Prepare some towels to avoid floor wet by the water left in the dishwasher 1 Top Table 1 Remove the rear 2 screws 2 Pull and lift the top table 3 Side Cabinet R L and Tub Felt 1 Cabinet R Remove front 4 screws Remove rear 3 screws 2...

Page 24: ...n the door Remove 6 screws stainless Close the door slowly and remove front cover downwards 2 Control Panel Assembly Open the door Remove 8 screws stainless Remove wire connections Be sure the wiring should not be changed in reassembling Remove 7 screws for controller 24 ...

Page 25: ...ost 4 Detergent Dispenser Close the door Remove the wire connections Remove 6 screws Push the detergent slowly 5 Door Spring R L Push the spring upwards and take it off from the hinge bracket Be careful not to be injured by the sharp edge of Tub Take off the hinge link from the hinge 6 Door Liner Open the door Remove the wire connection Pull the door liner upwards 25 ...

Page 26: ...the top rack and the upper lower rack 2 Nozzle and Water Guide Pull up the nozzle Remove the water guide from the tub bracket Top Rear 3 Lower Frame Assembly Remove 1 earth screw Remove 2 screws Pull up the lower frame assembly 26 ...

Page 27: ... might be needed Be careful the rubber packing of air guide assembly should not be lost Turn the water softener cap nut counterclockwise 6 Tub Sub Assembly Remove side 4 screws Remove 3 earth screws of right side Remove rear 4 screws Remove front 2 screws between base spacer and tub hinge Disconnect 1 hose assembly of right side Steam nozzle hose Lift tub assembly upward Be sure water softener is ...

Page 28: ... Balance Weight Remove 2 screws Lift up balance weight 3 Overflow Guide R L Remove 1 screw of right side Remove 1 screw of left side 4 Steam Nozzle Steam models only Remove side 4 screws Push the steam nozzle Pull up the overflow guide Pull up the packing of right left side Pull up the strip 28 ...

Page 29: ...ftner You can disassemble the solenoid valve by unscrew the 2 screws Be sure not to lost the spring and bobbin 2 Steam Generator Steam models only Remove 2 screws of right side and lift it up 3 Drain Pump Assembly Lift up drain pump assembly 4 Inlet Hose Assembly Remove 1 screw Steam models only Pull up lnlet hose or Inlet hose assembly 5 Float Switch Pull out the float switch with pressing downwa...

Page 30: ...er out of the sump after releasing the nut 2 Pressure Switch Soil Sensor Remove the wire connections Disconnect 1 hose assembly Remove 1 screw Pull up Pressure Switch and Soil Sensor 3 Impeller Washing Motor Remove 4 screws 1 hose assembly Lift up pump assembly Remove 6 screws Remove 1 screw under a motor Lift up 2 pump cases Remove 1 screw Lift up impeller Remove 1 screw under a motor Lift up pum...

Page 31: ...4 Vario Valve Remove 6 screws on the nozzle holders Lift up nozzle holders Lift up Vario Valve 5 Vario Motor Vaio Cam Remove 2 screws for Vario Motor Pull the Vario Motor Cam and Micro switch 31 ...

Page 32: ...SEMBLE SUMP ASSEMBLY 1 Lower Cover 2 Front Cover Remove 2 screws under a front cover Special tool might be needed Open the door Remove 6 screws stainless Close the door slowly and remove front cover downwards 32 ...

Page 33: ...ire connections Remove 2 hoses assembly Rotate 2 holders between sump and tub Lift up sump assembly Remove the wire connections in the back of the sump assembly Now you can remove the sump assembly from the tub perfectly You can repair the parts in the sump assembly like heater washing motor etc You may refer to 7 1 9 33 ...

Page 34: ...disconnected or disassembled NA8 Flow meter No Yes Reconnect or repair the connector Is the voltage between connectors out of range NA8 pin1 pin2 After remove terminal position assurance TPA of connector check the voltage when water is injected The voltage is 2 5V AC 15 Is the resistance vales between connectors out of range range is over 5MΩ White 8P Pin1 Pin2 No Replace the main PCB assembly Yes...

Page 35: ...hite black range is 15 30MΩ No Replace the inlet sensor Does the PCB assembly working properly When Door is closed check the voltage between NA4 3pin and BL4 1pin Aqua stop working 230VAC Aqua stop stop 0 1V No Replace the PCB assembly Yes Replace the inlet valve 35 ...

Page 36: ...sassembled Reconnect or repair the connector Is the voltage between connectors out of range YL3 pin1 pin2 pin3 After remove terminal position assurance TPA of connector check the voltage when water is drained The voltage is over 5V AC No Replace the main PCB assembly Yes Is the outer drain hose kinked or blocked or frozen Remove the cause of kink or block No Is the inner drain hose and drain case ...

Page 37: ...Is the water flooded in the base How to check Disassembly the lower cover Water is not flooded in the base Water is flooded in the base Tilt the machine and drain water in the base And find the cause of leakage Remove the cause of leakage Is the float assembled properly Replace or repair the float Yes Yes 37 ...

Page 38: ... machine is shut down No Yes Close the water tap Does the inlet valve working properly damaged or operating abnormally Yes Replace the inlet valve Does the PCB assembly working properly When Door is closed check the voltage between NA4 3pin and BL4 1pin Aqua stop working 230VAC Aqua stop stop 0 1V No Replace the PCB assembly Yes Replace the inlet valve 38 ...

Page 39: ...ed Yes No Replace the thermistor Is the thermistor operated properly range is 12 13kΩ No Reconnect or repair the connector Is the connector connected to main PCB assembly disconnected or disassembled RD6 Thermistor No Yes Replace the main PCB assembly Is the resistor between connectors out of range RD6 pin2 pin3 After remove the connector from the PCB check the resistor range is 12 13kΩ Yes No 39 ...

Page 40: ...bly disconnected or disassembled X1 stand by relay X2 Sump Heater relay RD6 Thermistor No Reconnect or repair the connector Yes When door is closed check the resistor between X1 4pin and X2 4pin Reconnect or repair the trans cable No Yes Heater Error Condition The water is not heated or the temperature in the inner tub is overheated to over 95 40 ...

Page 41: ...ating properly Yes Replace the pressure S W Does the PCB assembly working properly When door is closed check the resistor between X1 4pin and X2 4pin Heater working 230VAC 15 Heater stop 0 1V Yes No Replace the PCB assembly 41 ...

Page 42: ...e is 8 15V NO Yes Remove the cause of block or replace the motor Is the motor blocked Yes Replace the main PCB assembly Is the resistance values short 0 50Ω After pull out the RD3 connector check the housing connector Pin1 Pin2 Pin 2 Pin3 Pin3 Pin1 individually Yes No Main PCB assembly RD3 Motor signal Main PCB assembly WH4 Hall signal Check or replace the motor Is the resistance values in the ran...

Page 43: ...r operated properly range is 12 15Ω No Reconnect or repair the connector Check the connectors below Is the connector disconnected or BL4 vario motor NA8 Vario S W sensing disassembled Yes No Does the PCB assembly working properly When Door is closed check the voltage between BL4 pin1 and BL4 pin4 Vario motor stop working 230VAC Vario motor stop stop 0 1V Yes Replace the main PCB assembly No 43 ...

Page 44: ...ulti outlet power strip enough Avoid connecting several electric devices Alternate with explanation Is the connector connected to PCB Noise filter disconnected or disassembled Reconnect or repair the connector No No Replace the main PCB assembly Is LED on while the power is on Is the connector connected to Main PCB Assembly disconnected or disassembled Reconnect or repair the connector No Yes Yes ...

Page 45: ...n of spray arms lower upper top nozzle No Is the washing result of cups glasses not satisfactory Upper basket Yes a Does the upper nozzle fit properly to the water guide Reassemble or replace the upper nozzle or water guide b Does the water guide fit properly to the sump Reassemble or replace the water guide No Is the washing result of utensils not satisfactory Top basket Yes a Does the top nozzle...

Page 46: ...factory Upper basket Yes a Does the upper nozzle fit properly to the water guide Reassemble or replace the upper nozzle or water guide b Does the water guide fit properly to the sump Reassemble or replace the water guide No Is the drying result of utensils not satisfactory Top basket Yes a Does the top nozzle fit properly to the water guide Reassemble or replace the top nozzle or water guide b Doe...

Page 47: ...m of space is required between the washer and an adjacent cabinet or a wall Ensure the floor under the dishwasher is at the same level as the rest of the room to allow for any service requirements Step1 Prepare Cupboard opening If bare chipboard is adjacent to or above the dishwasher it should be sealed with a waterproofing paint or sealant to prevent swelling due to steam Cut out for hoses and el...

Page 48: ...hwasher side A correctly rated wired and earthed extension cord may be used if necessary See Fig A 3 The power point must be correctly earthed if in doubt have it checked by a qualified Electrician No other appliance shall be connected to the same plug outlet by a double adapter or similar plug 1 Lay the dishwasher on its back 2 Adjust the legs to the needed height of cabinet as shown at below Ste...

Page 49: ...ions are commonly used outside this area and local council or plumbers should be able to advise of these The S trap spigot must be drilled out cleanly and free of obstruction to its maximum internal diameter if used for drainage To prevent syphoning one of the following instruction methods must be followed When the drainage hose is connected to a sink S trap or waste disposal unit the hose must be...

Page 50: ...and the water tap as shown in figure This dishwasher may be fed with either hot or cold water If the water can not be maintained below 65 C the dishwasher must be connected to cold water 2 When connecting the sealing tape or sealing compound should be used to avoid water leaks Make sure that the line is not kinked or sharply bent Step 6 WATER SUPPLY CONNECTION 1 Securely hand tighten supply hose t...

Page 51: ...10 EXPLODED VIEW A001 A020 A010 A050 A040 F001 51 E006 G009 E200 ACCESSORIES Hardness Strip Noise Strip ...

Page 52: ...10 EXPLODED VIEW A001 A020 A010 A050 A040 F001 51 E006 G009 ACCESSORIES Hardness Strip ...

Page 53: ...y Rack Rail F112 F117 F111 F110 F210 F117 F111 F113 F113 F118 F060 F050 F022 F040 A002 F008 E001 F118 F215 F117 F112 F105 F117 F171 E010 F300 F230 F011 F013 F192 F004 F191 F005 F149 F148 F132 F137 F139 F138 52 ...

Page 54: ...utlery Rack Rail F112 F117 F111 F110 F210 F117 F111 F113 F113 F118 F060 F050 F022 F040 A002 F008 E001 F118 F215 F117 F112 F105 F117 F171 E010 F011 F013 F192 F004 F191 F005 F149 F148 F132 F137 F139 F138 53 ...

Page 55: ...F060 F050 F022 F040 A002 F008 E001 F118 F215 F117 F112 F105 F117 F171 E010 F011 F013 F192 F004 F191 F005 F149 F148 F132 F137 F139 F138 54 ...

Page 56: ...K200 K212 K006 K262 K252 K251 K260 K010 K110 K121 K124 K101 K122 K001 F174 F140 F140 F141 F142 K254 F147 F146 55 ...

Page 57: ...K010 K110 K121 K124 K101 K122 K001 F174 F140 F140 F141 F142 F147 F146 K200 K260 K251 K252 K262 K006 K212 K203 K254 K216 K201 K230 56 ...

Page 58: ...F035 M270 M210 M500 A120 A131 M090 M260 M023 F034 F032 F037 F031 F036 M050 M051 M053 M054 M055 M052 A161 M180 M200 M195 M190 M020 M211 M212 M214 M213 M216 M230 A276 A130 A160 57 ...

Page 59: ...F035 M270 A120 A131 M090 M260 F034 F032 F037 F031 F036 M050 M051 M053 M054 M055 M052 A161 M200 M195 M190 M020 M230 A276 A130 A160 58 ...

Page 60: ...M130 M060 M081 M071 M074 M120 M025 M087 M031 M028 M026 M088 M027 M072 M070 M006 M125 M126 M075 M091 M089 M030 M131 M134 M133 M132 59 ...

Page 61: ...A171 A172 A152 A103 A101 A102 A145 A156 A155 A157 A080 A070 A060 A170 A150 A110 A140 A101 A102 A146 A147 A142 A103 60 ...

Page 62: ...A157 A147 A144 A146 A142 A140 A070 A060 A156 A080 A150 A090 A155 A101 A102 A103 A110 61 ...

Page 63: ...P No MFL63726506 ...

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