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FOR SERVICE TECHNICIAN’S USE ONLY

PART NO. W10054160

TECH SHEET - DO NOT DISCARD

PAGE 4

P8-2

GND

L1 LINE –  BK

BU

P9-1

P8-5

MOTOR

MTR CS

MOIST.

MOIST RTN

MODEL

MODEL RTN

P14-5

P14-3

P14-6

R-W

R-W

BK-W

HEATER

RELAY

N.O.

COM

R

P9-2

BK

L1

W – NEUTRAL N

CENTRIFUGAL SWITCH

5M

6M

3M

BU

BELT

SWITCH

MAIN

1.4–2.6

START

1.4–2.8

EXHAUST THERMISTOR

10k

2M

1M

R

R-W

HIGH LIMIT

THERMOSTAT

205°F 96°C

(

)

HS1

HS2

NC

3V

1V

2

1

IG

IGR

50–500

3

4

5

FS1

FS2

VALVE

MOV

HOLD

ASSIST

MAIN

IGNITOR

VALVE
NO. 1

VALVE
NO. 2

FLAME SENSOR

BK

P2-1 VDD
P2-2 DATA
P2-3 VSS

THERMAL FUSE

196°F 91°C

(

)

TF1

TF2

BK

BK

R

R

G-Y

P14-1

P14-2

N.C.

N.C.

W

120 VOLTS

4M

DRIVE MOTOR

1/3 H.P.

P5-1 VDD

P5-5 DATA OUT

P5-8 +/- 12 VDC

VDD P1-8

DATA IN P1-7

VSS P1-6

STROBE P1-5

DATA OUT P1-4

BUZZER P1-2

CLOCK P1-3

P5-2 DATA IN
P5-3 VSS
P5-4 STROBE

P5-6 CLOCK
P5-7 BUZZER

+/- 12 VDC P1-1

G-Y

Y-R

P13-1

P13-2

P14-4

Y-R

SENSOR

G-Y

SENSOR

MOVS

Y-R

BK

OUTLET TEMP.

OUTLET

TEMP RTN

THERMAL

CUT-OFF

352°F (178°C)

MACHINE

CONTROL

ELECTRONICS

USER INTERFACE

P8-2

GND

W

DOOR

SWITCH

T

W

P8-4

P8-3   NEUTRAL

DOOR

NEUTRAL

BR

BK

DRUM LAMP

G-Y

BU

P8-1

LAMP LOAD

NC

NO

L1 LINE – BK

N.O.

COM

BK

HEATER

RELAY

P14-3

P14-6

R-W

R-W

CENTRIFUGAL SWITCH

5M

6M

3M

BU

EXHAUST THERMISTOR

10k

2M

1M

R

3V

1V

2

1

IG

IGR

50–500

3

4

5

FS1

FS2

VALVE

MOV

HOLD

ASSIST

MAIN

IGNITOR

VALVE
NO. 1

VALVE
NO. 2

FLAME SENSOR

R

R

G-Y

W

OUTLET TEMP.

OUTLET

TEMP RTN

MACHINE CONTROL

ELECTRONICS

W

DOOR

SWITCH

BU

W – NEUTRAL N

120 VOLTS

NC

NO

R-W

HIGH LIMIT

THERMOSTAT

205°F 96°C

(

)

HS1

HS2

NC

THERMAL FUSE

196°F 91°C

(

)

TF1

TF2

BK

THERMAL

CUT-OFF

352°F (178°C)

HEATER (GAS VALVE) STRIP CIRCUIT

GAS DRYER WIRING DIAGRAM

IMPORTANT:

Electrostatic (static electricity) discharge may cause

damage to machine control electronics. See page 1 for details.

Summary of Contents for WGD6400SW0

Page 1: ...ith all indicators off or with only the Clothes Dry indicator on 2 Select any one button except Pause Cancel and follow the steps below using the same button remember the button Press hold 2 5 seconds Release for 2 5 seconds Press hold 2 5 seconds Release for 2 5 seconds Press hold 2 5 seconds 3 If this test mode has been entered successfully all indicators on the console are illuminated for 5 sec...

Page 2: ...played on the dual 7 segment display A Dryness modifier LED will also be illuminated to indicate the voltage range corresponding to the number displayed The Dryness LEDs relate to specific voltage ranges as follows The More LED will be illuminated for high voltage readings above 132 VAC The Normal LED will be illuminated for normal voltage readings 90 132 VAC The Less LED will be illuminated for l...

Page 3: ... CODES The fault codes below would be indicated when attempting to start a drying cycle or after activating the diagnostic test mode PROBLEM POSSIBLE CAUSE TEST NOTE Possible Cause Tests MUST be performed in the sequence shown for each problem WON T POWER UP No response when buttons are pressed 1 Supply connections See TEST 1 page 6 2 Check harness connections 3 User interface assembly See TEST 6 ...

Page 4: ...2 DATA IN P5 3 VSS P5 4 STROBE P5 6 CLOCK P5 7 BUZZER 12 VDC P1 1 G Y Y R P13 1 P13 2 P14 4 Y R SENSOR G Y SENSOR MOVS Y R BK OUTLET TEMP OUTLET TEMP RTN THERMAL CUT OFF 352 F 178 C MACHINE CONTROL ELECTRONICS USER INTERFACE P8 2 GND W DOOR SWITCH T W P8 4 P8 3 NEUTRAL DOOR NEUTRAL BR BK DRUM LAMP G Y BU P8 1 LAMP LOAD NC NO L1 LINE BK N O COM BK HEATER RELAY P14 3 P14 6 R W R W CENTRIFUGAL SWITCH...

Page 5: ...N P9 2 BK W NEUTRAL N W Y R P13 1 P13 2 Y R SENSOR G Y SENSOR MOVS Y R BK MACHINE CONTROL ELECTRONICS 120 VOLTS MOISTURE SENSOR STRIP CIRCUIT See Removing the Back Panel page 11 to access High Limit Thermostat Thermal Cut off Drum Light Assembly Moisture Sensor Behind Strips Thermal Fuse Exhaust Thermistor See Accessing Removing the Electronic Assemblies page 11 to access Machine Control Electroni...

Page 6: ...ee Accessing Removing the Electronic Assemblies page 11 5 With an ohmmeter check for continuity between the neutral N terminal of the plug and P8 3 white wire on the machine control board The left hand side of figure 5 shows the position of the neutral terminal N on the power cord plug Also see figure 16 page 11 If there is continuity go to step 6 If there is no continuity disconnect the white wir...

Page 7: ...ter should indicate a closed circuit 0 2 ohms If not replace the door switch assembly See figure 12 page 10 and Removing the Front Panel Drum Assembly page 10 TEST 4 Heater This test is performed when either of the following situations occur Dryer does not heat Heat will not shut off This test checks the components making up the heating circuit The following items are part of this system Harness c...

Page 8: ...e heat turn off temperature Medium 140 5 60 3 Low 125 5 52 3 Extra Low 105 5 41 3 The measured overshoot using the glass bulb thermometer in the exhaust outlet can be 30 F 17 C higher 5 If the exhaust temperature is not within specified limits or you have come here from step 3 remove the P14 connector then measure the resistance between P14 3 red white wire and P14 6 red white wire at the connecto...

Page 9: ... If debris is not present replace sensor harness with MOVs Otherwise go to step 7 7 Measure the resistance across each of the outermost contacts and the center terminal ground connection If a resistance less than infinity is measured replace the sensor harness with MOVs 8 If moisture sensor diagnostic test passes check the thermistor Perform TEST 4a page 8 If the problem persists after replacing t...

Page 10: ...d display CF for one second then the current drying mode will be seen on the display The factory default value is 1 2 To select a different drying mode press the Dryness button again The dryer display will flash and show the available settings 3 With the display flashing the selected drying mode press the Start button to save the drying mode and exit the Start button in this mode does not start a ...

Page 11: ...clockwise direction See figure 17 7 Locking tabs located at the bottom of the console insert panel secure the user interface assembly to the console insert panel Using a flat blade screwdriver gently apply pressure to the locking tabs to release the user interface assembly See figure 17 Reinstalling the Electronic Assemblies Refer to preceding removal sections and replace in reverse order NOTE Whe...

Page 12: ...MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U S PATENTS 4 669 200 4 700 495 4 754 556 4 840 285 4 865 366 4 899 464 4 908 959 4 989 347 5 066 050 5 560 120 5 809 828 6 020 698 6 047 486 6 199 300 6 446 357 6 597 144 6 604 298 6 685 241 6 732 447 6 784 673 6 819 255 D314 261 D314 262 D457 991 D457 992 D495 453 ...

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