LG LD-2120WHU Service Manual Download Page 2

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1. CAUTION ......................................................................................................................... 4

2. SPECIFICATIONS ........................................................................................................... 5

3. FEATURES & TECHNICAL EXPLANATION ................................................................... 6

4. PARTS NAME ................................................................................................................ 10

5. WIRING DIAGRAM ...................................................................................................... 11

6. PROGRAM CHART (SCHEMATIC DIAGRAM) ............................................................ 12

7. HOW TO DISASSEMBLE ............................................................................................ 13

8. TROUBLE SHOOTING METHODS .............................................................................. 23

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.......... 23

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 25

9. INSTALLATION INSTRUCTION ................................................................................... 29

10. EXPLODED VIEW .......................................................................................................33

CONTENTS

Summary of Contents for LD-2120WHU

Page 1: ...DISHWASHER SERVICE MANUAL BEFORE SERVICING THE UNIT PLEASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES NOTE MODEL LD 2120W M HU LD 2140W M HU LD 2143W T HU ...

Page 2: ...AME 10 5 WIRING DIAGRAM 11 6 PROGRAM CHART SCHEMATIC DIAGRAM 12 7 HOW TO DISASSEMBLE 13 8 TROUBLE SHOOTING METHODS 23 A TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE 23 B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM 25 9 INSTALLATION INSTRUCTION 29 10 EXPLODED VIEW 33 CONTENTS ...

Page 3: ...individuals 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 ...

Page 4: ...ntrol Electronic Rated Power Watt 2 210 Heater Power Watt 2 100 Programs 212 series 4 214 series 5 Upper Rack Position Adjustable Lower Rack 50 Fold down Water Consumption 15 Eco Power Consumption kWh 1 05 Eco Operating Time min 115 Except Drying Eco Fan Dry System Yes Delay Start Function Yes Auto Off Power Switch Yes Process Monitor No Wash Level 5 Racks Nylon Coating Operating Water Pressure Ba...

Page 5: ... the average rinse temperature in conventional dishwashers 65 C This is how Rinse 77 C can eliminate some bacteria such as salmonella 3 1 1 High Temperature Rinsing LD 213 214 series only Turbo Spray System is elaborately designed to achieve a more powerful and efficient wash You can see the excellent 3 rotating spray arm with 5 directional waterjet 3 1 2 Turbo Spray System ...

Page 6: ... salt Refill with rinse aid CHILD LOCK Used to lock or unlock the control buttons to prevent all the setting from being changed by a child automatically canceled when power failure occur For locking unlocking press Auto and Eco button for a few seconds simultaneously BEEP ON OFF The dishwasher must be switched off The beep on off function can be set by pressing the Quick and Pre wash button simult...

Page 7: ...the operating temperature will be up to 77 BEEP ON OFF The dishwasher must be switched off The beep on off function can be set by pressing the Quick and Pre wash button simultaneously for a few seconds then a on will appear in the time display The beep on off function is automatically canceled when power failure occur PROGRAM When you want to select program press each button POWER For operating pr...

Page 8: ... TIME 10 TIME 11 TIME n 0H 11 11 12 22 13 33 14 44 15 55 16 66 17 77 n 01 n 02 n 03 Frequency n 05 n 06 Temperature n 08 n 09 n 0A n 0b All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting All LEDs are lighting None Washing motor Drain pump Inlet valve Dispenser Heater for 10 sec Fan motor Regenera...

Page 9: ...ain hose 8 Inlet hose 9 Power Cord 10 Adjust Leg 11 Upper Rack 12 Cutlery Rack 13 Detergent 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 be varied without notice according to localities Funnel ...

Page 10: ...1 2 3 1 2 3 2 3 1 2 1 2 3 2 3 1 2 3 1 1 2 3 4 5 6 7 8 2 3 4 5 6 2 2 2 3 3 3 4 No Com 2 1 LD 212 Series CONTROLLER RD YL BL BL WH WH Tap Relay YL WH INLET VALVE FERRITE CORE NOISE FILTER REGEN VALVE RD RD GY GY FAN VT BL BL BL BN BN BN GN YL WH OR BK BK RD RD WH WH BK BK BK BK BK RDWH THERMISTER TURBIDITY SENSOR SOFTENER FLOAT FLOW METER YL WH BL RD DOOR S W VARIO S W VARIO MOTOR CAPACITOR RINSE FL...

Page 11: ...y Drain Water Supply keeping Drain Dry Drain Drain Rinse Dry Finish Drain Pump W Moter After 1 min H1 H4 H5 H7 Program chart LD 214 Series Regen Valve Dispenser Vario Motor Fan Motor Heater Inlet Valve Quick Pre Wash Eco Auto Ⅲ Auto Ⅱ Auto Ⅰ Program 50 70 70 Intensive 50 70 70 65 69 69 40 60 55 45 35 Wash Pre Wash Main Wash Rinse 1 Rinse 2 Rinse 3 Heating Rinse Dry Drain A Drain C Drain D Drain E ...

Page 12: ...ater softner 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 7 HOW TO DISASSEMBLE 7 1 FULL DISASSEMBLE 1 Top Table 1 Remove the rear 2 screws 2 Pull and lift the top table 2 Low Cover 3 Cabinet R L 1 Cabinet R Remove front 4 s...

Page 13: ...en the door Remove 6 screws stainless Close the door slowly and remove front cover downwards 2 Control Panel Assembly Open the door Remove 4 screws stainless Remove wire connection Be sure the wiring should not be changed in reassembling Remove 3 screws for Latch assembly Remove 3 screws for Controller ...

Page 14: ...r Close the door Remove the wire connections Remove 6 screws with brackets Detergent Dispenser Door Liner Door Bracket Inner Cover Air Duct Out Cover Fan 5 Door Spring Right Left Push the Spring upwards and take it off from the Frame Be careful not to be injured by the sharp edge of Tub Take the Hinge Link off from the Hinge 6 Door Liner Open the door Remove 4 screws Do not use other screws for as...

Page 15: ...le 3 Nozzle Holder Disconnect the water guide Remove 4screws and lift it up Main filter Inner filter Middle filter Micro filter 2 Filter Assembly Turn inner filter counterclockwise and lift inner filter and middle filter You can disassemble inner filter and middle filter by pulling opposite direction Lift up main filter Lift up micro filter ...

Page 16: ...ft tub assembly upward Be sure water softner is not blocked Be careful not to be injured or scratch floor by the sharp edge of tub 8 Air Guide Assembly Disconnect the wiring connection Remove 3 hoses assembly Be careful the o ring should not be lost 9 Water softner 1 Remove the hose assembly 2 Lift it upward Be careful not to wet the floor by the water left in the water softner 3 You can disassemb...

Page 17: ...ft the vario valve upward 8 Capacitor Remove 1 screw 10 C Base Assembly 1 Remove the screw which tighten washing motor and base 2 Lift them upward Be careful not to wet the floor by the water left in the sump 3 Pull out the float switch with pressing downward softly not on all models 4 Detach the washing motor and heater assembly by pulling opposite direction to sump 5 Remove the 3 screw for drain...

Page 18: ...models Press the holder hook as shown in figure Pull the hose assembly 10 Drain Hose Press the rear side hook Pull the holder forward Pull the holder upward 8 Power cord assembly Turn the power cord assembly 90º and take it off ...

Page 19: ...ee 7 1 2 Page 16 3 Cabinet R L See 7 1 3 Page 16 4 Air Guide Disconnect 3 hoses assembly You need not to unscrew the air guide nut 5 Put the Dishwasher upside down 7 2 DISASSEMBLE C BASE ASSEMBLY Be careful not to be injured by the sharp edge of tub ...

Page 20: ... models 2 Disconnect of powercord assembly 3 Disconnect wire from the capacitor 6 Remove the side screws 1 Remove side 8 screws 2 Remove 2 Earth screws of right side 3 Remove 1 motor bracket screw 4 Lift base upward slightly You can t lift up base perfectly because of some parts connecting to base ...

Page 21: ...ike heater case washing pump drain motor etc you may refer to 7 1 10 2 10 Page 20 24 Don t disassemble sump by 7 2 If you want to disassemble the sump follow 7 1 4 Disconnect wire from the inlet valve or Aquastop Now you can remove the base from the tub perfectly ...

Page 22: ...se of kink or block Replace the Drain Pump Motor or repair the Circuit Replace the connections of Hose Check the point of damages and repair or replace the related parts Replace the washing pump Check the applied voltage Open the Water Tap Repair the Inlet Hose a Close the Water Tap b Unscrew the Inlet Hose Inlet Valve side c Clean the Filter of Inlet Valve Replace or repair the Inlet Valve Check ...

Page 23: ... ERROR displayed Condition The resistance of ther mistor not normally out put THERMAL ERROR displayed Condition The Circuit of Heater is troubled The Thermistor is troubled The Heater is shorted The Relay Circuit is troubled Repair the Circuit of Heater Replace the Thermistor Replace the Heater Repair the Relay Circuit The water is not heated or the temperature in the Tub is overheated to over 95 ...

Page 24: ...Power Switch or NO the Circuit is O K YES The C Trans Circuit NO is O K YES Insert the Plug Correctly Check the electricity is failed or not Replace the Fuse or Circuit Breaker of house Check the Thermal Fuse and replace it Check the Power Switch or the circuit and repair it Check the C Trans Circuit and repair it Check the Controller Power Circuit B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM ...

Page 25: ...ked YES The circuit of Pump NO Motor is O K YES The Thermal Protec YES tor of Motor is tripped NO Close the Door Tightly Check the Door Switch in Latch Handle Remove the cause of block or replace the Pump Motor Repair the circuit Cool the Motor Until the Thermal Protector reset Replace the Pump Motor ...

Page 26: ... clogged or not the holes of spray arms blocked or not Utensils are correctly arranged or not Utensils are overloaded or not the spray arm rotating is obstructed or not the program is correctly selected or not Reduce the amount of Rinse Aid for Streak Does salt refill lamp blink Refill salt YES Dry Results are not satisfactory Increase the amount of Rinse Aid Set the number higher Select the Progr...

Page 27: ... 28 Power Button not automatically off after operation Check the button is blocked by foreign materials Check the Power Switch Replace it if necessary Check the Controller Replace it if necessary ...

Page 28: ... 5 cm 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 an...

Page 29: ...ters of the dishwasher 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 sho...

Page 30: ...options 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...

Page 31: ...washer 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...

Page 32: ... 33 E006 E007 E008 E009 E011 10 EXPLODED VIEW LD 214 Series LD 2120 Series ...

Page 33: ... 34 A140 A110 A146 A001 A050 A020 F008 A147 A142 A145 A070 A152 A060 A010 A080 A090 Upper Rack Lower Rack A150 EXPLODED VIEW LD 212 Series ...

Page 34: ... 35 A001 A050 A020 F008 A010 A007 A006 A150 A080 A155 A156 A090 A142 A140 A110 A147 A145 A146 E006 A060 A070 EXPLODED VIEW LD 2140 Series ...

Page 35: ...A050 A020 F008 Upper Rack Lower Rack A090 A154 A147 A159 A146 A080 A156 A155 A150 A070 A060 A110 A140 A142 A146 A103 A102 A101 A157 A147 A144 A149 A145 A101 A102 A103 A010 A007 A006 EXPLODED VIEW LD 2143 Series ...

Page 36: ... 37 F040 F022 F171 F117 A007 A006 F011 F013 F117 F210 F113 F118 F060 F050 F011 F013 F110 F113 F112 F004 F111 F111 F191 F144 F132 F181 F182 F183 F143 EXPLODED VIEW TUB ASSEMBLY ...

Page 37: ... 38 K251 K252 K200 K201 K262 K203 K260 K212 K209 K002 K124 K110 K121 K001 K101 K003 K122 K123 K010 F142 F141 F174 EXPLODED VIEW PANEL DOOR ASSEMBLY LD 212 Series ...

Page 38: ... 39 K208 K251 K252 K201 K216 K262 K203 K260 K212 K209 K002 K124 K110 K121 K001 K101 K003 K122 K123 K010 F142 F141 F174 EXPLODED VIEW PANEL DOOR ASSEMBLY LD 214 Series ...

Page 39: ... 40 M230 A130 A131 A276 M250 M023 M280 M270 M290 M260 F031 F036 F037 A030 A040 A045 F035 F034 F032 EXPLODED VIEW BASE ASSEMBLY LD 212 Series ...

Page 40: ... 41 M230 A130 A131 A276 A160 M250 M023 M280 M270 M290 M260 F031 F036 F037 A030 A040 A045 F035 F034 F032 EXPLODED VIEW BASE ASSEMBLY LD 214 Series ...

Page 41: ... 42 M072 M073 M070 M071 M074 M006 M024 M025 M031 M010 M087 M051 M029 M062 M002 M060 M061 M027 M080 M005 M001 A120 M090 M083 M086 M026 M028 M018 M008 EXPLODED VIEW SUMP ASSEMBLY ...

Page 42: ... 43 43 MEMO ...

Page 43: ...P No 3828DD3007G ...

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