LG D14121WH Service Manual Download Page 2

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

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

3. PARTS NAME .................................................................................................................. 6

4. FEATURES & TECHNICAL EXPLANATION ................................................................... 7

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

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

7. HOW TO DISASSEMBLE ............................................................................................ 14

8. TROUBLE SHOOTING METHODS .............................................................................. 27

A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.......... 27

B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 29

9. INSTALLATION INSTRUCTION ................................................................................... 33

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

CONTENTS

Summary of Contents for D14121WH

Page 1: ...B C D A F D1423W L M T B C D A F D14131WF D14135LF D14138AC D14121WH LD 4321W LD 4421M LD 4421PV LD 4421NV k n i l g n i w o l l o f t a n o i s r e v o e d i v n i l a u n a m r e s u d n i f o s l a y a m u o Y r e h s a w h s i d m o c g l e d i u g w w w r u s e l b i n o p s i d t s e o é d i v n o i t a s i l i t u d e d i u g n U e l l e s s i a v e v a l m o c g l e d i u g w w w ...

Page 2: ...ION 7 5 WIRING DIAGRAM 12 6 PROGRAM CHART SCHEMATIC DIAGRAM 13 7 HOW TO DISASSEMBLE 14 8 TROUBLE SHOOTING METHODS 27 A TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE 27 B TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM 29 9 INSTALLATION INSTRUCTION 33 10 EXPLODED VIEW 37 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: ...Stainless Steel Control Electronic Rated Power Watt 1 534 1 670 1 812 Heater Power Watt 1 464 1 600 1 742 Programs 6 Rack Nylon Coating Upper Rack Adjustable type Lower Rack D1420 D1421 D1423 50 Fold down Removal type D1422 50 Fold down Water Consumption 14 Eco Power Consumption kWh 1 08 Eco Operating Time min 199 Fan Dry System Yes Delay Start Function Yes Auto Off Power Switch Yes Process Monito...

Page 5: ...Drain Hose 8 Inlet Hose 9 Power Cord 10 Adjustable Leg 11 Upper Rack 12 Cutlery Rack 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 The appearance and specifications may vary without notice Funnel ...

Page 6: ... basket So you can get strong water pressure for the big pots in the lower basket and soft water pressure to protect your delicate or valuable dishes in the upper basket 4 1 2 Dual Wash Newly introduced Slim Direct Inverter motor is inverter controlled Speed is controlled based on program selection It also offers high energy efficiency to minimize energy loss 4 1 3 Slim Direct Inverter Motor Moist...

Page 7: ...4 2 Display Panel 8 Program Program MODEL D1420 D1423 Series MODEL D1421 D1422 Series ...

Page 8: ... 9 Spray Delay Start Power Child Lock UV Indicator Time Left Rinse Beep On Off Half Load Spray Delay Start Power Child Lock Cool Dry Indicator Time Left Rinse Beep On Off Half Load ...

Page 9: ...ep on off function is automatically canceled when power failure occur Rinse Repeated pressing of the Rinse button will select Extra Hot Rinse Extra Hot Rinse If you select the Extra Hot function the operating temperature will be up to 80 Dual wash Auto Eco When you select Rinse an additional rinse cycle is added Half Load In case of small load use upper or lower rack only to save energy With each ...

Page 10: ...utton Spray Button 1 TIME 1n0H 1U00 All LEDs are lighting 1 TIME 1 TIME 1 TIME 1 TIME 1 TIME 1 TIME 2 TIME 3 TIME 4 TIME 5 TIME 6 TIME 7 TIME 8 TIME 9 TIME 10 TIME 11 TIME 12 TIME 11 11 12 22 13 33 14 44 15 55 Sensing value n02 n03 Frequency n05 n06 Temperature n08 n09 n0A n 0b n 0C Turbidity Sensor Washing Motor Drain Pump Inlet Valve Dispenser Heater for 10 sec Fan Motor Regeneration Valve UV La...

Page 11: ... 12 5 WIRING DIAGRAM ...

Page 12: ... 30 20 30 33 5 43 1 10 8 30 20 30 33 5 43 1 1 45 10 20 30 113 Min 2 7 16 7 29 2 30 Hz Temp 560 40 150 45 500 500 70 Sec 30 10 43 1 1 3 10 5 20 6 20 8 20 7 1 10 8 30 20 30 33 5 43 1 10 8 30 20 30 33 5 43 1 1 45 10 20 30 104 Min 2 7 16 12 29 2 30 Hz Temp 560 40 150 45 500 500 70 Sec 30 10 43 1 1 3 10 5 20 6 20 8 20 7 1 10 8 30 20 30 33 5 43 1 10 8 30 20 30 33 5 43 1 1 45 10 20 30 109 Min 2 7 12 7 29...

Page 13: ...ow 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 Side Cabinet R L and Tub Felt 1 Cabinet R Remove front 4 screw...

Page 14: ...emove 6 screws stainless Close the door slowly and remove front cover downwards 2 Control Panel Assembly Open the door Remove 2 screws stainless Remove wire connection Be sure the wiring should not be changed in reassembling Remove 3 screws for Latch assembly Remove 7 screws for Controller ...

Page 15: ...tions Remove 6 screws with brackets Push the Detergent slowly pulling up the Flange by Standard Screwdriver 5 Door Spring Right Left 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 connections Pull the Door liner upwards ...

Page 16: ...e needed Be careful the rubber packing of air guide assembly should not be lost Turn the Water softner Cap counterclockwise 4 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 3 Nozzle Pull up the nozzle ...

Page 17: ...4screws and lift it up 6 Sump Holder Remove the Sump Holder 5EA 7 Base spacer Remove front 2 screws Remove side 2 screws Lift the front side of dishwasher and pull the base spacer forward 8 Lower Frame Remove 2 screws Press the holder hook as shown in figure ...

Page 18: ...frame 2 Balance Weight Remove real 4 screws Lift up balance weight 9 Tub sub Assembly Remove side 4 screws Remove 3 Earth screw of right side Remove rear 4 screws Lift 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 ...

Page 19: ...sconnect from Water Softner Disconnect the wiring connection Remove 3 hoses assembly Be careful the o ring should not be lost Be careful not to wet the floor by the water left in the hose 3 UV Lamp Limited on some models Remove the wire connections Remove side 4 screws Push the UV Lamp slowly ...

Page 20: ...n pump Remove the wire connections Pull the Heater out of the Sump after releasing the nut Remove 3 screw to disassemble the Drain pump 8 C Base Assembly Remove the wire connections Lift them upward Be careful not to wet the floor by the water left in the sump Pull out the float switch with pressing downward softly not on all models Detach the washing motor and heater assembly by pulling opposite ...

Page 21: ... Impeller and Check valve Remove 4 screw to disassemble the Washing Motor When you reassemble the Sump Assembly be careful not to kink tear and take off the seal 3 Vario Motor Soil sensor Remove the wire connections Remove 2 screws for Vario Motor Pull the Vario Motor Soil Sensor and Micro switch ...

Page 22: ...der hook as shown in figure Pull the hose assembly 7 Drain Hose Press the rear side hook Pull the holder forward Pull the holder upward 5 Power cord assembly Noise Filter Turn the power cord assembly 90 and take it off Remove 2 screw ...

Page 23: ...ge 16 3 Cabinet R L See 7 1 3 Page 16 4 Put the Dishwasher upside down Be careful not to wet the floor by the water left in the air guide 5 Air Guide Disconnect 1 hoses assembly 7 2 DISASSEMBLE C BASE ASSEMBLY Be careful not to be injured by the sharp edge of tub ...

Page 24: ...Lift the front side of dishwasher and pull the base spacer forward 8 Lower Frame Remove 2 screws Press the holder hook as shown in figure 6 Disconnect the wire Remove the wire from the wire hook at the base Remove 3 Earth screws of right side Remove the Float switch ...

Page 25: ...rfectly 11 C Base Assembly You can repair the parts in the C Base like heater washing motor drain motor etc you may refer to 7 1 8 1 10 Don t disassemble sump by 7 2 If you want to disassemble the sump follow 7 1 9 Remove the side screws Remove side 4 screws Remove rear 4 screws Remove 3 Earth screws of right side Lift base upward slightly You can t lift up base perfectly because of some parts con...

Page 26: ...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 27: ... 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 28: ...e 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 29: ...ocked 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 30: ...s 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 Prog...

Page 31: ... 32 32 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 32: ...m 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 a...

Page 33: ...e 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 shown at belo...

Page 34: ...r 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 mu...

Page 35: ...hwasher 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 suppl...

Page 36: ... 37 37 A040 A050 A020 A001 A010 E006 10 EXPLODED VIEW ...

Page 37: ... 38 38 D1420 Series F110 F113 F112 F113 F210 F111 F117 F111 F118 F117 F022 F040 F060 F050 F008 E001 A002 F191 F004 F192 E010 F011 F013 F118 F215 F112 F105 F117 F171 F117 F230 F220 K255 F001 F136 F132 ...

Page 38: ... 39 D1421 Series F110 F113 F112 F113 F210 F111 F117 F111 F118 F117 F022 F040 F060 F050 F008 E001 A002 F191 F004 F192 E010 F011 F013 F118 F215 F112 F105 F117 F171 F117 F001 F136 F132 ...

Page 39: ... 40 40 D1422 Series F022 F040 F060 F050 F008 E001 A002 F191 F004 F192 E010 F011 F013 F118 F215 F112 F105 F117 F171 F117 F001 F136 F132 ...

Page 40: ... 41 41 D1423 Series F022 F040 F060 F050 F008 E001 A002 F191 F004 F192 E010 F011 F013 F118 F215 F112 F105 F117 F171 F117 F230 F220 K255 F001 F136 F132 ...

Page 41: ... 42 42 K200 K204 K260 K251 K203 K209 K201 K216 K252 K212 K262 K006 K010 K124 K121 K110 K122 K001 K002 F142 F141 F174 F140 F140 K101 Before 107KW After 108KW ...

Page 42: ... 43 43 F035 F037 A130 A276 M230 A160 F034 F032 F031 F036 M008 M023 M090 A131 A030 M270 F001 M260 A277 ...

Page 43: ... 44 44 M071 M001 A120 M070 M074 M072 M073 M005 M010 M006 M140 M051 M120 M025 M035 M121 M031 M029 M028 M027 M026 M087 M081 M088 M130 M060 ...

Page 44: ... 45 45 A157 A147 A144 A146 A142 A110 A149 A140 A101 A102 A103 A171 A170 A174 A172 A175 A173 A070 A060 A156 A145 A101 A102 A103 A154 A147 A159 A080 A146 A150 A155 D1420 D1421 Series ...

Page 45: ... 46 A157 A147 A144 A146 A142 A110 A140 A070 A060 A156 A080 A150 A090 A155 A101 A102 A103 D1422 Series ...

Page 46: ... 47 A157 A147 A144 A146 A142 A110 A149 A140 A101 A102 A103 A070 A060 A156 A145 A101 A102 A103 A154 A147 A159 A080 A146 A150 A155 A090 D1423 Series ...

Page 47: ...P No 3828DD3007T ...

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