Samsung WF431ABP/XAA User Manual download pdf (Page 3)

Washer Connector Checks WF438

CN3

1 Door Lock Close (Blk)

2 Door Lock Open (Wht)

3 Drain Pump (Vio)

4 Steam Valve (Brn)

5 Bleach Valve (Pnk)

6 Circulation Pump (Gry)

7 Pre Valve (Yel)

8 Main Valve (Blu)

9 Hot Valve (Red)

CN2

1 AC Pwr (L) (Blk)

2 Pwr Sw (Yel)

3 Valves Common, Lock Sw (Gry)

CN1

1 Reactor Connector Port (Red)

2 Reactor Connector Port (Red)

RY4 Steam Heater Relay

1 (Wht)

2 (Blk)

RY1 Power Relay

1 (Blu)

2 (Wht)

RY2 Washer Heater Relay

1 (Blk)

2 (Red)

CN5

1 Motor Pwr U Phase (Blu)

2 Motor Pwr V Phase (Wht)

3 Motor Pwr W Phase (Red

CN6 (Hull Sensor)

1 +5 vdc (Pnk)

2 Sensor Signal (Red)

3 Sensor Signal (Blu)

4 Ground (Org)

CN8 (Display Connector)

1 T Comm Port (Blu)

2 R Comm Port (Wht)

3 Rest Signal (Yel)

4 Ground (Org)

5 +5 vdc (Pnk)

6 +15 vdc (Red)

CN7

4 Water Temp Thermistor (Yel)

5 Water Temp Thermistor Gnd (Org)

6 Water Level Sensor (Pnk)

7 Water Level Sensor (Vio)

CN4

1 Door Sw (Org)

3 Door Sw (Gry)

7 AG Sensor (Brn)

8 AG Sensor (Yel)

Water Temperature Thermistor Check

Test 1 Test 2

Connector CN 7 Pin 4 (Yellow) and CN7 Pin 5

(Orange)

Operating voltage at Room temperature

Operating Resistance at Room

Temperature (Power off) Dis-

connect CN7

4.2VDC (5VDC May indicate a connector

issue)

50-57kΩ

Door Switch Check

Test 1 Test 2

Connector CN4 Pin 1 (Org) and CN4 Pin 3 (Gray) 25VDC Door Open, 0VDC Door Closed

Operating Resistance with

power off

24kΩ

Water Level Sensor Check

Test 1 Test 2

Voltage: Connector CN 7 Pin 6 (Pink) and CN7 Pin

5 (Orange) And Connector CN 7 Pin 7 (Violet) and

CN7 Pin 5 (Orange)

Resistance: Connector CN 7 Pin 6 (Pink) and CN7

Pin 7 (Violet)

Operating voltage at no water in the

drum-

Operating Resistance (Power

off)

2.5VDC

Pin 6 (Pink) and Pin 7 (Violet)

22- 24Ω

Hall Sensor Check

Test 1 Test 2

Connector CN6 Pin 4 (Orange) and Pin 2 (Red) ad-

ditionally Pin 4 (Orange) and Pin 3 (blue)

Manually spin the drum to see the volt-

age change, Power On

N/A

0Vdc or 3.75Vdc

Motor Check

Test 1 Test 2

Connector CN5 Pin 1 (Blue), Pin 2 (White) and Pin

3 (Red)

Power Off 11.5Ω across Pins 1-2, Pins 1

-3, & Pins 2-3

N/A

A/C Power Check

Test 1 Test 2

Connector CN 2 Pins 1 (Black) and 2 (Yellow)

Power On 120VAC N/A

1 2 3 4 5 6 7

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