LG SIGNATURE WM9500H A Series User manual

1
WM9500H*A
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service
Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright © 2016 ~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.

2 3
1. Specications ......................................................................................................................................3
2. Features and Technical Explanation ...................................................................................................4
2-1. Features .......................................................................................................................................4
2-2. Neuro fuzzy Washing time optimization .......................................................................................5
2-3. Water level Control.......................................................................................................................5
2-4. Door Control.................................................................................................................................5
2-5. The Door can not be Opened.......................................................................................................6
2-6. Door lock lamp Lights...................................................................................................................6
2-7. Chlid Lock.....................................................................................................................................6
2-8. Water Circulation..........................................................................................................................6
2-9. Steam...........................................................................................................................................6
2-10. Drum Light..................................................................................................................................6
3. Part Idendication................................................................................................................................7
4. Installation and Test ............................................................................................................................8
5. Operation.............................................................................................................................................11
5-1. Control Panel Features ................................................................................................................11
5-2. Cycle Guide..................................................................................................................................14
5-3. Special Functions.........................................................................................................................15
5-4. Explanation of Each Process .......................................................................................................16
6. Wiring Diagram / Program Chart .........................................................................................................18
7. Test Mode............................................................................................................................................19
7-1. Safety Caution..............................................................................................................................19
7-2. Load Test Mode ...........................................................................................................................19
7-3. How To Check the Water Level Frequency Error.........................................................................19
8. Troubleshooting...................................................................................................................................20
8-1. Safety Caution..............................................................................................................................20
8-2. Error Mode Summary...................................................................................................................20
8-3. Troubleshooting With Error ..........................................................................................................20
8-4. Other Troubleshooting..................................................................................................................22
9. Component Testing Information ..........................................................................................................34
9-1. Filter Assembly (Line Filter)..........................................................................................................34
9-2. Door Lock Switch Assembly.........................................................................................................35
9-3. Stator Assembly ...........................................................................................................................37
9-4. Pump Motor Assembly .................................................................................................................38
9-5. Inlet Valve Assebly.......................................................................................................................39
9-6. Heater Assembly..........................................................................................................................40
9-7. Thermistor Assembly....................................................................................................................41
10. Disassembly Instructions...................................................................................................................43
11. Exploded View...................................................................................................................................54
11-1. Cabinet and Control Panel Assembly.......................................................................................54
11-2. Drum and Tub Assembly..........................................................................................................55
11-3. Dispenser Assembly.................................................................................................................56
CONTENTS
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reserved. Only training and service purposes.

3
DOOR TYPE CHROME
Steam, Smart Grid, Delay Wash
Add Garments, Turbo Wash™, Cold Wash
Extra Rinse, Pre Wash, Fresh Care,
Remote Start, Drum Light, Child Lock
20 and 120 psi (138 - 827 kPa)
5.76 DOE
WM9500H*A
W : White, V : Stainless Silver, K : Black Stainless
0-1,300 rpm
370 W
1300 W
239lb (108kg)
15
29" 5/8(W)x 34 1/16“(D)x 41 3/16“(H),
56 5/16" (D with door open)
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reserved. Only training and service purposes.

4 5
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reserved. Only training and service purposes.

4 5
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reserved. Only training and service purposes.

6 7
Pre Wash
Pre Wash
^
Detergent
dispenser
(See page 23)
Door Door
seal
Water
circulation
nozzles
Tu b
Leveling
feet
Drain pump filter cover
Drain pump filter
Drain hose
Pedestal or Pedestal Washer
(sold separately)
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reserved. Only training and service purposes.

6 7
^
Detergent
dispenser
(See page 23)
Door Door
seal
Water
circulation
nozzles
Tu b
Leveling
feet
Drain pump filter cover
Drain pump filter
Drain hose
Pedestal or Pedestal Washer
(sold separately)
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reserved. Only training and service purposes.

8 9
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reserved. Only training and service purposes.

8 9
`
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reserved. Only training and service purposes.

10 11
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reserved. Only training and service purposes.

10 11
XX
WM9500H*A
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reserved. Only training and service purposes.

12 13
· Press the Cycle selector button to select the cycle
designed for different types of fabric and soil levels.
Cycle Selector Button
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reserved. Only training and service purposes.

12 13
·Steam : Use the Steam button to add steam to the cycle for the extra cleaning.
·Smart Grid : Smart appliances can communicate with local utility companies that are equipped with Smart
Grid equipment.
·Delay Wash : Once you have the cycle and other settings, press this button to delay the start of the wash
cycle.
·Add Garments : Use this function to add garments or remove foreign objects like coins or keys after the
cycle has started.
·Turbo Wash™ : Adding the Turbo Wash™ option reduces cycle time and provides good performance in
normal cycle.
·Cold Wash : Use this function to wash without hot water and heating.
·Extra Rinse : You can add an extra rinse cycle to the default rinse cycle.
·Pre Wash : Pre-wash for 15 minutes when clothes are covered in dirt or dust. This feature is suitable for
heavily soiled items.
·To change the water temperature, press the Temp. button repeatedly until the desired setting is on.
·To change the spin speed, press the Spin Speed button repeatedly to cycle through available options.
·To change the soil level, press the Soil Level button repeatedly until the desired setting is on.
·To adjust the volume of the signal, press the Signal button repeatedly until the desired setting is on.
Temp., Spin, Soil, Signal Button
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reserved. Only training and service purposes.

14 15
X[
The cycle guide below shows the options and recommended fabric types for each cycle.
= Available option
Cycle Fabric Type
Display
Time(min)
(Option :
Default)
Basic Option (=Default) Additional Options
Wash
Temp.
Spin
Speed
Soil
Level
Steam Cold
Wash™
Delay
Wash
Extra
Rinse
Pre
Wash
Turbo
Wash™
Bright
Whites
™
White Fabrics72 ~ 85 Hot
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal

Light
Allergiene
™ Cotton, underwear,
pillow covers,
bed sheets, baby
wear
103 ~ 138-Extra High
High
Medium
Low
No Spin
  
SanitaryHeavily soiled
underwear, work
clothes, diapers,
etc.
11 6 ~ 129
Extra Hot
Extra High
High
Medium
Low
No Spin
Heavy
Normal

Light 
Bedding Large items such as
blankets and
comforters
62 Hot
Warm
Cold
Tap Cold
Medium
Low
No Spin
Heavy
Normal

Light
Heavy Duty Heavily soiled
Cotton Fabrics89 ~ 132Extra Hot Hot
Warm
Cold
Tap Cold
Extra High

High
Medium
Low
Heavy
Normal
Light
NormalCotton, linen,
towels, shirts,
sheets, jeans,
mixed loads
26 ~ 53 Extra Hot
Hot
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
Heavy
Normal
Light
Jumbo Wash Comforter62 Hot
Warm
Cold
Tap Cold
High
Medium
Low
No Spin
Heavy
Normal

Light
Perm.Press Dress shirts/pants,
wrinkle-free
clothing, poly/
cotton blend
clothing,
tablecloths
37 ~ 47 Hot
Warm
Cold
Tap Cold
High
Medium
Low
Heavy
Normal
Light

Delicates Dress shirts/
blouses,
nylons, sheer or
lacy garments
41 Warm
Cold
Tap Cold
Medium
Low
No Spin
Heavy
Normal

Light
Towels Towels 61 ~ 74 Hot
Warm
Cold
Tap Cold
Extra High

High
Medium
Low
No Spin
Heavy
Normal
Light

Speed Wash Lightly soiled
clothing
and small loads
15 Hot
Warm
Cold
Tap Cold
Extra High

High
Medium
Low
No Spin
Heavy
Normal
Light 
Rinse + Spin Rinse, drain and
spin only 18 Cold
Extra High
High
Medium
Low
No Spin
-

Tub CleanThis cycle is
designed to remove
a mildewy or musty
smell.
93 ~ 95

Downloaded
* Default: Small
Load
Normally soiled
and small loads.49 ~ 51 Hot Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal

Light

Cycle time depends on type and amount of load and detergent,water pressure and chosen additional options.
- If theTurbo Wash™ option is on, you cannot select No Spin as your Spin.
(If theTurbo Wash™ option is off, you can select No Spin as your Spin.)
Cycle Fabric Type
Basic Option (=Default) Additional Options
Wash
Temp. Spin Speed Soil Level
Steam Cold
Wash™
Delay
Wash
Extra
Rinse
Pre
Wash
Turbo
Wash™
Bright
Whites™
White
Fabtics Hot 
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ● ●
Allergiene™Cotton, underwear, pillow
covers, bed sheets, baby
wear
-Extra High
High
Medium
Low
No Spin
● ● ● ●
Sanitary Heavily soiled underwear,
work clothes, diapers, etc. Extra HotExtra High High
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ● ●
Bedding Large items such as
blackets and comforters
Hot
Warm
Cold
Tap Cold
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ● ● ●
Heavy Duty Heavily soiled
Cotton Fabrics
Extra Hot
Hot
Warm
Cold
Tap Cold
Extra HIgh
High
Medium
Low
Heavy
Normal
Light ● ● ● ● ● ●
Normal Cotton, linen,
towels, shirts, sheets,
jeans,
mixed loads
Extra Hot
Hot
Warm
Cold
Tap Cold
Extra HIgh
High
Medium
Low
Heavy
Normal
Light ● ● ● ● ● ●
Jumbo Wash Comforter Hot
Warm
Cold
Tap Cold
HIgh
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ● ● ●
Perm.Press Dress shirts/pants,
wrinkle-free
clothing, poly/
cotton blend
clothing, tablecloths
Hot
Warm
Cold
Tap Cold
HIgh
Medium
Low
Heavy
Normal
Light ● ● ● ● ●
Delicates Dress shirts/
blouses,
nylons, sheer or lacy
garments
Warm
Cold
Tap Cold
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ●
Towels Towels Hot
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ● ●
Speed Wash Lightly soiled
clothing and small loads Hot
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal
Light● ● ● ●
Rinse + Spin Rinse, drain and spin only ColdExtra High
High
Medium
Low
No Spin
-
● ●
Tub Clean This cycle is
designed to remove a
mildewy or musty smell.
● ●
Downloaded
* Default
Small Load
Normally soiled and small
loads.
Hot
Warm
Cold
Tap Cold
Extra High
High
Medium
Low
No Spin
Heavy
Normal
Light ● ● ● ●
Sports Wear Sports Wear Warm
Cold
Tap Cold
Medium
Low
No Spin
Normal
Light ● ●
Cycle time depends on type and amount of load and detergent, water pressure and chosen additional options.
- If the Turbo Wash™ option is on, you cannot select No Spin as your Spin.
(If the Turbo Wash™ option is off, you can select No Spin as your Spin.)
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reserved. Only training and service purposes.

14 15
Fresh Care, Remote Start, Wi-Fi Connect, PGM Save, Drum Light and Child Lock
Fresh Care
Steam Fresh Care.
Pre Wash
Pre Wash
Child Lock. Child Lock
Child Lock
Extra Rinse
Remote Start
Use a smart phone to control your appliance remotely.
Also, it is possible to monitor your cycle operation so you know how much
time is left in the cycle.
Wi-Fi Connect
Use this option for connecting to the internet through your home Wi-Fi network
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reserved. Only training and service purposes.

16 17
wylT~hzo
16
17
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reserved. Only training and service purposes.

16 17
17
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reserved. Only training and service purposes.

18 19
6. WIRING DIAGRAM / PROGRAM CHART
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reserved. Only training and service purposes.

18 19
6
123 123
4 4
5 5
6
WH
3 Φ MOTOR
6
12
3
13 2
4 4
5
5
61
2
3
13 2
123 13
2
4 4
123 1 3
123 123
2
4 4
21
1
2
21 2 1
WH
WH WH
WH
BL
123
231
NA
PRESSURE
SENSOR
V
SB
WH
NA3 BL1
BL3 NA2
WH WI-FI
MODULE
RD5
123
231
BLEAC
H
12 12
MAIN
12 12
PRE
WASH
12 12
12 12
FUSEFUSE
GN
/
YL
12 3
231
NOISE
FILTER
123
231
WH
RD
BK
(L1)
WH
(N)
GN
POWER
CORD
120 VAC / 60 HZ
GN /YL
BN (L1)
PTO
PTO
SOLE
NOID
1 2 3
5 3 2
4
4
DOOR LOCK SWITCH
WH
BL (N)
BN (L1)
RD (N)
RD (L1)
BL (N)
BK (L1)
BK (L1)
BL(L1)
BK (L1)
BK (L1)
BK (L1)
BN
BN
YL
Relays
LAMP
BL
BL
WH
WH
GY
BL
WASH
HTR
14.4Ω
1000 W
@120
VAC
YL
OR
BL
BK
RD
MAIN PWB
BL
YL
X71
BK
X134
*Door Lock Solenoid 120 VAC
(4) OR to (3) BL by Pulse
OhmCheck OR to BL 700Ω to 1500Ω
*Door Switch Makes / Breaks Neutral
Side of Line (2) Rd to (1) BK
BK (L1) BK (L1)
BK (L1)
V
SB
WH
(N)
(N)
(N)
(N)
120 VAC INLET VALVES
800Ω to 1200Ω
3 Φ Motor Ohm Tests
5to 15 Ohms
1 to 2 1 to 3 2 to 3
DISPLAY PWB
9 8 7
8 7910
10 6
6
5 5
43 4 3
654321
7
BK
BR
RD
OR
YL
GN
PK
Door
Monitor
Circuit
WM4270H*A Wiring Diagram
5
4
3
2
1
PSVoltage Tests
2.5 to 3.0 VDC
WH to V
WH to SB
Frequency 26 KHZ to 23 KHZ
Ohm Check
20Ω to 25Ω
V to SB
Triacs (L1)
REGULATED POWER SUPPLY TEST Step 1:
* Disconnect & Reconnect Washer to Power /
120 VAC BK to RD / RD LED OFF
* Press POWER Button / 0 VAC BK to RD / RD LED ON!
Note: Ohm check POWER Button Switch from BK to
YL / Switch is Normally Closed / Press Button & Switch
OPENS!
2 3 4567
1
2 3 4 5 67
1
234 5 6 7
1 10
10
2 3 4 5 67
89
89
1
23456 7
110
10
2 3 4567
8 9 8 9
1
2 3 4567
1 10
10
234567
89 89
1
DISPLAYPWB
YL(L1)
BK
RD (N)
RD (L1)
654 3 2 1
7
7 6 5 4 32
BR
RD
OR
YL
GN
(N)
(L1)
(L1)
HOT
VALVE
NOTES
Test Mode
Press & Hold SPIN SPEED & SOIL LEVEL Press POWER
Press START / PAUSE to cycle thru tests
Component Tests
Voltage Tests with connectors installed
Ohm Tests with connectors removed
RD
NA4
OR
BL (L1)
BL
YL
GY
WH
BK (L1)
BN
BN
BN
RORO
BL (L1)
123
231
UVW
32 1
2 31
BL
RD
YL
1
23
13
2
GY4
BL
RD
YL
THERMISTOR
.5 to 4.5 VDC
Ohms Test
50KΩ to 60KΩ @ Room
Temperature
WH to BL – WASH
OR (N)
(N)
(N)
SB
BL (N)
REGULATED POWER SUPPLY TEST Step 2:
With RED LED ON / CK the following Voltages
RD to OR – 12 VDC
RD to YL –5VDC
WH
CNC
Power Button
N.C.
Wiring Color Legend
BK – Black BL – Blue BN – Brown GN – Green GY – Gray
OR – Orange PK – PinkRD – Red SB – Sky Blue WH – White V – Violet YL – Yellow
2
2
1 1CON 4-1
1
BK
BK
RD
PK
V
BL
Function Test while operating;
Press Delay Wash & Soil Level = Water Level (255 Empty-213 Flood Level)
Press Delay Wash & Spin Speed = Motor RPM
Press Delay Wash & Wash Temp.= Temp. Celsius
DRAIN
PUMPCIRCULATION PUMP
BN BKBKSB
Pump Motors 120 VAC
Ohms Test
Drain Motor BK to BN 13Ω to 17Ω
Pump Motor SB to BK 25Ω to 30Ω
SB
SB
8
8
5
4
3
2
1
4
3
2
1
4
3
2
1
5
4
3
2
15
4
3
2
1
123 12 3
1
2
12 WH
WH
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20 21
X_
1. Hold the Spin and Soil.
Tz, Rz connectiong check.
Tumble clockwise.
Soil and Delay Wash
Rpm (45~50)
Connecting Success(”go”)
Connecting Failure(”-”)
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reserved. Only training and service purposes.