LG D1420WF Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Dishwasher
  5. D1420WF
  6. Service manual

LG D1420WF Service Manual

Hide thumbs Also See for D1420WF:
Table of Contents

Advertisement

Quick Links

DISHWASHER
SERVICE MANUAL
NOTE
BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY
FOR SAFETY AND CORRECT SERVICES.
MODEL : D1420W(L,M,T,B,C,D,A)F
D1421W(L,M,T,B,C,D,A)F
D1422W(L,M,T,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
w
w
w
Y
o
u
m
a
y
a
s l
o
w
w
U
n
g
u
d i
e
d
u '
l i t
g .
u
d i
e
g l
c .
f
n i
d
u
s
r e
m
a
n
u
l a
w
g .
u
d i
e
g l
s i
t a
o i
n
v
d i
é
o
e
t s
o
m
/
a l
v
e
v -
n i
v
d i
e
o
v
e
s r
o i
n
a
c .
o
m
d /
s i
h
d
s i
p
o
n
b i
e l
s
r u
a
s i
s
l e
e l
f t
l o
o l
w
n i
g
l
n i
k
w
a
s
h
r e

Advertisement

Table of Contents
loading

Related Manuals for LG D1420WF

Summary of Contents for LG D1420WF

  • Page 1 DISHWASHER SERVICE MANUAL NOTE BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY FOR SAFETY AND CORRECT SERVICES. MODEL : D1420W(L,M,T,B,C,D,A)F D1421W(L,M,T,B,C,D,A)F D1422W(L,M,T,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 l i t é...

  • Page 2: Table Of Contents

    CONTENTS 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.

  • Page 3: Caution

    CAUTION ! DISCONNECT POWER CORD BEFORE SERVICING RECONNECT ALL GROUNDING DEVICES IMPORTANT SAFETY NOTICE ! This service information is intended for individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair this appliance may result in personal injury and property damage.

  • Page 4: Specifications

    2. SPECIFICATION SPECIFICATION ITEM Rated Voltage / Frequency AC 220V/50Hz AC 230V/50Hz AC 240V/50Hz Installation Freestanding Place Settings Product Dimension(mm) 600(W) 600(D) 850(H) Product Weight(Kg) 60kg Color White / Luxury Silver / Titanium / STS Black / ACM / Dark Red / Perl Silver Tub Material Stainless Steel Control...

  • Page 5: Parts Name

    3. PARTS NAME 1. Control Panel 11. Upper Rack 2. Door Handle 12. Cutlery Rack 3. Front Cover 13. Detergent And Rinse Aid Dispenser 4. Lower Cover 14. Vapor Vent Cover 5. Display Window 15. Upper Spray Arm 6. Power Button 16.

  • Page 6: Features & Technical Explanation

    4. FEATURES & TECHNICAL EXPLANATION 4-1 New Technology Introduction 4-1-1. High Temperature Rinsing (Extra Hot function) • During the high temp. Rinse course, water temperature in an dishwasher reaches 80°C, considerably higher than the average rinse temperature in conventional dishwashers(65°C). This is how Rinse 80°C can eliminate some bacteria such as salmonella.
  • Page 7 4-2 Display Panel � MODEL : D1420 / D1423 Series ① ① Program � MODEL : D1421 / D1422 Series ① ① Program - 8 -...
  • Page 8 ② ② UV ③ ③ Indicator ④ ④ Time Left ⑤ ⑤ Beep On/Off ⑥ ⑥ Rinse ⑦ ⑦ Half Load ⑪ ⑪ Delay Start ⑩ ⑩ Spray ⑨ ⑨ Power ⑧ ⑧ Child Lock ② ② Cool Dry ③ ③ Indicator ④ ④ Time Left ⑤...
  • Page 9 ① ① Program • When you want to select program, press this button. ② ② UV • If you want to sterilize the dishes, press UV button. • After drying cycle, sterilizer will be performed by UV lamp. • At this time, “St” code is displayed in display window. Cool Dry •...
  • Page 10 4-3 TEST MODE CHECK PROGRAM(START IN THE STATE OF THE CLOSED DOOR) Checking points The number of BUTTON DISPLAY pushing button Load Half Load + Rinse All LEDs are lighting 1 TIME 1n0H : 1U00 + POWER Button Dual Wash Program Button 1 TIME 11 : 11...

  • Page 11: Wiring Diagram

    5. WIRING DIAGRAM - 12 -...

  • Page 12: Program Chart(Schematic Diagram)

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

  • Page 13: How To Disassemble

    7. HOW TO DISASSEMBLE BEFORE DISASSEMBLING THE DISHWASHER ; 1) Remove the plug from electric outlet to avoid electric shock. 2) Close the Water Tap(faucet). 3) Remove all dishes and items in the dishwasher. 4) Remove the Lower Rack and the Upper Rack. 5) In case of the water softner assembly model, open the water softner cap to flow out the water to sump and drain to avoid the floor wet.
  • Page 14 4. Door Assembly 1) Front Cover Open the door. Remove 4 screws(long Type, stainless). Remove 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.
  • Page 15 3) Fan Open the door. Remove the wire connections. Turn the Inner Cover counterclockwise. Remove the air duct. 4) Detergent Dispenser Close the door. Remove the wire connections. Remove 6 screws with brackets. Push the Detergent slowly pulling up the Flange by Standard Screwdriver.
  • Page 16 5. Tub assembly 1) Rack Remove the Upper rack and Lower rack. 2) Air guide Nut and Water softner Cap&Nut Turn the Air guide Nut counterclockwise. (Special tool might be needed.) Be careful the rubber packing of air guide assembly should not be lost. Turn the Water softner Cap counterclockwise.
  • Page 17 5) Nozzle Holder Disconnect the water guide Remove 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.
  • Page 18 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. 6.
  • Page 19 3) UV Lamp(Limited on some models.) Remove the wire connections. Remove side 4 screws. Push the UV Lamp slowly. 4) Door Bracket Remove 4 screws. Lift up ward. 7. Air Guide Assembly Lift it upward to disconnect from Water Softner. Disconnect the wiring connection.
  • Page 20 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 direction to sump.
  • Page 21 3) Vario Motor & Soil sensor Remove the wire connections. Remove 2 screws for Vario Motor. Pull the Vario Motor, Soil Sensor and Micro switch. 4) Impeller & Washing Motor Remove the wire connections. Remove 10 screws to disassemble the Impeller and Check valve.
  • Page 22 5) Power cord assembly & Noise Filter Turn the power cord assembly 90 and take it off. Remove 2 screw. 6) Aquastop Press the holder hook as shown in figure. Pull the hose assembly. 7) Drain Hose Press the rear side hook. Pull the holder forward.
  • Page 23 7-2. DISASSEMBLE C-BASE ASSEMBLY Be careful not to be injured by the sharp edge of tub. 1. Top Plate See 7-1. 1. (Page 16) 2. Low Cover See 7-1. 2. (Page 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.
  • Page 24 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. 7. Base spacer Remove front 2 screws. Remove side 2 screws. Lift the front side of dishwasher and pull the base spacer forward.
  • Page 25 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 connecting to base.) 10. Disconnect the connecting points between tub and base Disconnect noise filter.

  • Page 26: Trouble Shooting Methods

    8.TROUBLE SHOOTING METHODS A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE POSSIBLE CAUSE ERROR MESSAGE REMEDY FOR ERROR OCCURRENCE The Water Tap is not opened. Open the Water Tap. INLET ERROR The Inlet Hose is kinked. Repair the Inlet Hose. The Filter of inlet valve clogged a) Close the Water Tap.
  • Page 27 POSSIBLE CAUSE ERROR MESSAGE REMEDY FOR ERROR OCCURRENCE EXCESS ERROR The Inlet Valve is troubled. Replace the Inlet Valve. displayed The Air Break is troubled. Replace the air breaker. Condition The Sensor Assembly is troubled. Replace the sensor assembly. Excessive water is sup- The Controller is troubled.

  • Page 28: Trouble Diagnoses And Repair By Symptom

    B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM No Power on when the power button pressed. • Insert the Plug Correctly. The plug is correctly inserted in the • Check the electricity is failed or not. Socket-Outlet? The Fuse or • Replace the Fuse or Circuit Breaker of house. Circuit Breaker of house is O.K? The Thermal Fuse...
  • Page 29 The Wash Pump/Motor does not run. • Close the Door Tightly. The Door is tightly • Check the Door Switch in Latch Handle. closed? The Pump/Motor is • Remove the cause of block or replace the Pump/Motor. not blocked? The circuit of Pump/ •...
  • Page 30 Washing Results are not Satisfactory After washing, are there still Reduce the amount of Rinse-Aid White deposits or streaks on (for Streak) the dishes? Does salt refill lamp blink? (Refill salt) After washing, are there still food soils on the dishes? Check that : - the amount of detergent Correctly used or not - Filters clogged or not.
  • Page 31 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.) - 32 - - 32 -...

  • Page 32: Installation Instruction

    9. INSTALLATION INSTRUCTION Step1: Prepare Cupboard opening 1. This dishwasher is designed to fit to the size shown as below. 2. Select a location as close to sink as possible for easy connections to water and drain lines. 3. The dishwasher should not be installed more than 3 meters from sink for proper drainage. 4.
  • Page 33 Step 2 : PREPARE ELECTRICAL WIRING CAUTION For personal safety, remove house fuse or open circuit breaker before installation. Do not use an extension cord or adapter plug with this appliance. Electrical and grounding connections must comply with the national electrical code/provincial and municipal code and/or other local codes.
  • Page 34 Step 5 : DRAIN LINE CONNECTION 1. If the end drain hose does not fit to the drain line, use a piece of rubber connector (not supplied) that must be resistant to heat and detergent and may be obtained from a plumbing shop. 2.
  • Page 35 Drain Hose Extension Drain Hose extension kits are available from through your local service centre. Extend drain Hose as shown below. 200 mm Max. Sink Copper pipe fl 20mm flared at drain nose and other end if required. Use the couplings for connections when you extend drain hose.

  • Page 36: Exploded View

    10. EXPLODED VIEW A001 A020 A010 A050 A040 E006 - 37 - - 37 -...
  • Page 37 D1420 Series F110 F111 F113 F117 F112 F060 F050 F117 F111 F118 F210 F113 F040 A002 F008 E001 F022 F117 F105 F112 F171 F117 F215 E010 F118 F192 F220 F230 K255 F004 F191 F136 F001 F132 F011 F013 - 38 - - 38 -...
  • Page 38 D1421 Series F110 F113 F111 F117 F112 F060 F050 F117 F111 F118 F210 F113 F040 A002 E001 F008 F022 F117 F105 F112 F171 F117 F215 E010 F118 F192 F004 F191 F136 F001 F132 F011 F013 - 39 -...
  • Page 39 D1422 Series F060 F050 F040 A002 E001 F008 F022 F117 F105 F112 F171 F117 F215 E010 F118 F192 F004 F191 F136 F001 F132 F011 F013 - 40 - - 40 -...
  • Page 40 D1423 Series F060 F050 F040 A002 E001 F008 F022 F117 F105 F112 F171 F117 F215 E010 F118 F192 F220 F230 K255 F004 F191 F136 F001 F132 F011 F013 - 41 - - 41 -...
  • Page 41 K200 K212 K204 K006 K262 K216 K252 K260 K251 K201 K203 K209 K010 K124 K110 K121 K001 K101 K122 F142 K002 F140 F141 F140 ■ Before ■ After ~107KW**** 108KW****~ F174 - 42 - - 42 -...
  • Page 42 F035 F037 F034 F032 A130 A131 A276 F031 F036 A160 M230 M008 F001 M260 M090 M023 A277 A030 M270 - 43 - - 43 -...
  • Page 43 M072 M073 M071 M070 M074 M001 A120 M120 M025 M130 M035 M006 M121 M088 M031 M005 M029 M028 M010 M027 M026 M087 M140 M081 M051 M060 - 44 - - 44 -...
  • Page 44 D1420 / D1421 Series A170 A171 A172 A174 A175 A173 A154 A147 A159 A150 A156 A080 A102 A146 A101 A155 A103 A145 A070 A060 A110 A144 A149 A147 A157 A140 A101 A102 A103 A142 A146 - 45 - - 45 -...
  • Page 45 D1422 Series A150 A090 A156 A080 A102 A101 A155 A103 A070 A060 A147 A110 A144 A157 A140 A142 A146 - 46 -...
  • Page 46 D1423 Series A154 A147 A159 A090 A156 A080 A102 A146 A101 A155 A103 A145 A070 A150 A060 A110 A144 A149 A147 A157 A140 A101 A102 A103 A142 A146 - 47 -...
  • Page 47 P/No. : 3828DD3007T...

This manual is also suitable for:

D1420lfD1420mfD1420tfD1420bfD1420cfD1420df ... Show all

Table of Contents