Table of Contents
Advertisement
Power Button
DISPLAY PWB
N.C.
C
NC
2
3
4
5
6
7
8
9 10
11
1
BL
OR
BK RD YL
3
2
1
2
1
BL
3
1
2
3
WH
1
2
3
BL
V
BK RD
YL
RD1
1
2
3
4
1
4
2
3
REGULATED POWER SUPPLY TEST Step 1:
* Disconnect & Reconnect Washer to Power /
120 V
BK to RD / RD LED OFF
AC
* Press POWER Button / 0 V
BK to RD / RD LED ON!
AC
Note: Ohm check POWER Button Switch from BK to
YL / Switch is Normally Closed / Press Button & Switch
OPENS!
NA3
GY4
1
2
3
4
5
6
2
3
1
1
3
4
2
5
6
2
1
3
BL
2
1
3
2
1
3
1 2 3
WH
1
2 3
U
V W
WH
1
2
1
2
WASH
THERMISTOR
3 Φ MOTOR
.5 to 4.5 V
DC
Ohms Test
3 Φ Motor Ohm Tests
50KΩ to 60KΩ @ Room
5 to 15 Ohms
Temperature
1 to 2
WH to BL – WASH
1 to 3
2 to 3
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
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
WM4270H*A Wiring Diagram
DISPLAY PWB
GN
BL
MAIN PWB
Door
Monitor
Circuit
BL1
2
3
3
1
6
5
4
1
2
6
4
5
3
2
1
2
3
1
BL3
1
2
3
NA
1
2
3
PRESSURE
SENSOR
PS Voltage Tests
2.5 to 3.0 V
DC
BL (L1)
WH to V
WH to SB
Frequency 26 KH
to 23 KH
Z
Z
Ohm Check
20Ω to 25Ω
V to SB
Wiring Color Legend
BK – Black
BL – Blue
BN – Brown
OR – Orange
PK – Pink
RD – Red
V – Violet
YL – Yellow
7
6
5
4
3
1
2
GN
OR
BR
PK
RD
REGULATED POWER SUPPLY TEST Step 2:
YL
BK
8
7
6
5
4
3
2
1
With RED LED ON / CK the following Voltages
7
6
5
4
3
2
1
8
WH
RD to OR – 12 V
DC
OR
BR
YL
RD to YL – 5 V
V
PK
RD
BK
DC
9
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1 CON 4-1
(L1)
Triacs (L1)
(N)
RD5
1
2
3
4
1
2
3
4
1
4
1
3
4
2
1
3
1
2
RD
NA4
NA2
1
1
BK (L1)
BK (L1)
BK (L1)
LAMP
1
2
1
2
1
2
1
2
1
2
1
2
PRE
BLEAC
MAIN
WASH
H
OR (N)
120 V
INLET VALVES
AC
800Ω to 1200Ω
BL (L1)
BK (L1)
BK (L1)
4
1
2
3
SB
1
2
3
BK
BK
BN
SB
SOLE
NOID
DRAIN
CIRCULATION PUMP
PUMP
DOOR LOCK SWITCH
Pump Motors 120 V
AC
*Door Lock Solenoid 120 V
Ohms Test
(4) OR to (3) BL by Pulse
Drain Motor BK to BN 13Ω to 17Ω
Ohm Check OR to BL 700Ω to 1500Ω
Pump Motor SB to BK 25Ω to 30Ω
*Door Switch Makes / Breaks Neutral
Side of Line (2) Rd to (1) BK
GN – Green
GY – Gray
SB – Sky Blue
WH – White
6
6
6
6
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5
BK
BN RD OR YL GR
6
1
2
3
4
5
NFC
6
NA5
1
2
3
4
5
(L1)
Relays
(N)
BK
YL
X134
X71
2
1
2
3
2
1
2
2
3
1
2
1
BK
2
3
2
3
WASH
HTR
14.4Ω
1000 W
GN
@120
/
VAC
YL
GN / YL
BL (N)
BN (L1)
RD
1 2 3
1
2 3
NOISE
RD (L1)
FILTER
1 2 3
1
2 3
WH
GN
BK
WH
1
2
3
(L1)
WH
(N)
4
5
3
2
POWER
CORD
120 V
/ 60 H
AC
Z
AC
Advertisement
Table of Contents
Troubleshooting
