LG LD-2040MH Service Manual Download Page 2

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

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

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

4. PARTS NAME ................................................................................................................ 11

5. WIRING DIAGRAM ...................................................................................................... 12

6. PROGRAM CHART (SCHEMATIC DIAGRAM) ............................................................ 13

7. HOW TO DISASSEMBLE ............................................................................................ 15

7-1. FULL DISASSEMBLE .......................................................................................... 15

7-2. DISASSEMBLE C-BASE ASSEMBLY ................................................................. 23

8. TROUBLE SHOOTING METHODS .............................................................................. 26

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.......... 26

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 28

9. INSTALLATION INSTRUCTION ................................................................................... 32

10. EXPLODED VIEW ...................................................................................................... 37

11. REPLACEMENT PART LIST ....................................................................................... 44

CONTENTS

Summary of Contents for LD-2040MH

Page 1: ...DISHWASHER SERVICE MANUAL BEFORE SERVICING THE UNIT PLEASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES NOTE MODEL LD 2040WH LD 2040SH LD 2040MH ...

Page 2: ...CHEMATIC DIAGRAM 13 7 HOW TO DISASSEMBLE 15 7 1 FULL DISASSEMBLE 15 7 2 DISASSEMBLE C BASE ASSEMBLY 23 8 TROUBLE SHOOTING METHODS 26 A TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE 26 B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM 28 9 INSTALLATION INSTRUCTION 32 10 EXPLODED VIEW 37 11 REPLACEMENT PART LIST 44 CONTENTS ...

Page 3: ...ndividuals 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: ...eel Control Electronic Rated Power Watt 2 180 Heater Power Watt 2 070 Programs 6 Upper Rack Position Adjustable Lower Rack 50 Fold down Water Consumption ℓ 16 Economy Power Consumption kWh 1 05 Economy Operating Time min 86 Except Drying Economy Fan Dry System Yes Delay Start Function Yes Auto Off Power Switch Yes Process Monitor Yes Wash Level 5 Racks Nylon Coating Operating Water Pressure Bar 0 ...

Page 5: ...an Drying System During the high temp Rinse course water temperature in an dishwasher reaches 77 C considerably higher than the average rinse temperature in conventional dishwashers 65 C This is how Rinse 77 C can eliminate some bacteria such as salmonella 3 1 2 High Temperature Rinsing Turbo Spray System is elaborately designed to achieve a more powerful and efficient wash You can see the excelle...

Page 6: ...he power is automatically turned off POWER SWITCH BUTTON For operating press this button first for power on After operating this button automatically switches off for safety and energy saving In case of irregular surge disturbances to the machine the power may be automatically turned off for safety TIME SAVE This function is for saving time and energy With each press time save ON and OFF is repeat...

Page 7: ...18 88 19 99 10 00 n 01 Frequency n 03 n 04 n 05 n 06 n 07 n 08 n 09 Temperature n 11 n 12 n 13 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 All LEDs are lighting All LEDs are lighting 4 TIME 15 55 All LEDs are lighting None Flow Meter Washing Motor Drain Pump Inlet Val...

Page 8: ...trol Panel 3 Door Handle 4 Front Cover 5 Lower Cover 6 Process Monitor 7 Power Switch 8 Drain Hose 9 Inlet valve ASM 10 Power Cord 11 Adjust Leg 12 Upper Rack 13 Cutlery Rack 14 Detergent Rinse Aid Dispenser 15 Vapor Vent Cover 16 Upper Spray Arm 17 Lower Spray Arm 18 Filter ASM 19 Lower Rack 20 Salt Container Cap Accessories Funnel ...

Page 9: ...5 WIRING DIAGRAM 10 Non Air mixing Blower ...

Page 10: ...0 30 30 30 25 10 40 40 T T T T T T T 1 1 1 43 45 1 43 9 12 14 2 55 15 15 15 15 15 18 55 55 55 55 55 45 45 70 70 70 70 55 65 70 65 50 40 35 Wash Pre Wash Main Wash Rinse 1 Rinse 2 Rinse 3 Heating Rinse Dry Drain A Drain C Drain D Drain A Drain A Drain A Drain A Drain B Water Supply Water Supply Water Supply Water Supply Water Supply Water Supply Water Supply Water Supply Water Supply Water Supply W...

Page 11: ...e water softner assembly model open the water 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 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 sc...

Page 12: ...e 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 5 screws for Controller 5 Door Assembly 1 Front Cover Open the door Remove 6 screws stainless Close the door slowly and remove front cover downwards ...

Page 13: ...enser Close the door Remove the wire connections Remove 6 screws with brackets Detergent Dispenser Door Liner Door Bracket Inner Cover 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 assembl...

Page 14: ...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 15: ...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 16: ... 4 screws and lift the cover upward Lift the vario valve upward 7 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 Detach the washing motor and heater assembly by pulling opposite direction to sump 4 Remove the 3 screw for drain motor ...

Page 17: ...ll models Press the holder hook as shown in figure Pull the hose assembly 10 Inlet valve on applicable models Remove 2 screws 9 Power cord assembly Turn the power cord assembly 90º and take it off 8 Noise filter Remove 1 screw ...

Page 18: ... 19 11 Drain Hose Press the rear side hook Pull the holder forward Pull the holder upward 12 Relay Remove 2 screws ...

Page 19: ... 1 2 Page 15 3 Cabinet R L See 7 1 3 Page 15 4 Air Guide Disconnect 3 hoses assembly You need not to unscrew the air guide nut 5 Put the Dishwasher upside down Be careful not to be injured by the sharp edge of tub 7 2 DISASSEMBLE C BASE ASSEMBLY 20 ...

Page 20: ... 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: ... you may refer to 7 1 10 2 12 Page 21 22 Don t disassemble sump by 7 2 If you want to disassemble the sump follow 7 1 4 Disconnect wire from the inlet valve Aquastop Now you can remove the base from the tub perfectly 22 5 Disconnect wire from the relay Now you can remove the base from the tub perfectly ...

Page 22: ...ace 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 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 the water remain on the base 1 Check the point of damages and repair or rep...

Page 23: ...er Replace the sensor assembly Repair or replace the Controller Excessive water is sup plied than normal water level Automatically drain Pump operated EXCESS 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...

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: ... 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 26 ...

Page 26: ...logged 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 ㆍ Reduce the amount of Rinse Aid for Streak ㆍ 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 Pro...

Page 27: ...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 28 ...

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: ...ary 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 Step 2 PREPARE ELECTRICAL WIRING Step 3 PREPARE DISHWASHER FOR INSTALLATION CAUTION For ...

Page 30: ...ne using the spanner 2 Slide the dishwasher into the cabinet opening carefully Make sure that the drain hose inside the cabinet should not be kinked or exceeded Step 4 INSTALL THE DISHWASHER IN CUPBOARD CAUTION If the height of cupboard is below 850mm you should remove the top table by unscrewing the 4 screws Two of front and two of rear ...

Page 31: ...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 32: ...f 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 to water supply Plug power cord into an earthed power point and switch on 2 Operate the dishwash...

Page 33: ...A276 006 10 EXPLODED VIEW 34 ...

Page 34: ...020 A002 F008 A050 A010 A110 A146 A147 A140 A070 A080 A152 A090 A150 A155 A156 A090 A080 A060 A145 A142 35 EXPLODED VIEW The appearance and specifications may be varied without notice according to localities ...

Page 35: ...F040 F022 F171 F117 F142 F141 F011 F013 F132 F117 F210 F113 F118 F174 F181 F060 F050 F011 F013 F110 F113 F112 F004 F111 F182 F183 F111 F191 EXPLODED VIEW TUB ASSEMBLY 36 ...

Page 36: ...K251 K252 K230 K205 K208 K203 K202 K201 K121 K002 K003 K001 K101 K204 K209 K262 K260 K123 K122 K110 K124 K010 EXPLODED VIEW PANEL ASSEMBLY DOOR ASSEMBLY 37 ...

Page 37: ...M230 A130 A276 M250 M023 M280 M270 F031 F036 F037 A030 A040 M260 F035 F034 F032 F072 M210 F021 EXPLODED VIEW BASE ASSEMBLY 38 ...

Page 38: ...M072 M073 M070 M071 M074 M006 M024 M025 M031 M010 M087 M051 M029 M062 M002 M060 M027 M080 M005 M001 A120 M090 M083 M086 M026 M028 M018 M008 EXPLODED VIEW SUMP ASSEMBLY 39 ...

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