Whirlpool WED94HEXW1 Instruction Manual

PAGE 1

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

IMPORTANT SAFETY NOTICE — “For Technicians only”

This service data sheet is intended for use by persons having electrical, electronic, and

mechanical experience and knowledge at a level generally considered acceptable in the

appliance repair trade. Any attempt to repair a major appliance may result in personal injury

and property damage. The manufacturer or seller cannot be responsible, nor assume any

liability for injury or damage of any kind arising from the use of this data sheet.

Whirlpool Control Panel........................................ 2

Diagnostic Guide.................................................. 3

Activating the Service Diagnostic Mode ................ 3

User Interface/Control System Test....................... 4

Install Diagnostics................................................ 5

Software Version Display...................................... 6

Fault/Error Codes ............................................. 6, 7

Contents

Troubleshooting Guide.......................................... 8

Troubleshooting Tests..................................... 9–20

Strip Circuits...................................................... 21

Dryer Disassembly Instructions.................... 22, 23

Wiring Diagrams .......................................... 24, 25

Component Locations ........................................ 26

Speciﬁcations .................................................... 26

PART NO. W10306459B

IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics

ESD problems are present everywhere. Most people begin to feel an ESD discharge at

approximately 3000V. It takes as little as 10V to destroy, damage, or weaken the main control

assembly. The new main control assembly may appear to work well after repair is ﬁnished,

but a malfunction may occur at a later date due to ESD stress.

Use an anti-static wrist strap. Connect wrist strap to green ground connection point or

unpainted metal in the appliance

-OR-

Touch your ﬁnger repeatedly to a green ground connection point or unpainted metal

in the appliance.

Before removing the part from its package, touch the anti-static bag to a green ground

connection point or unpainted metal in the appliance.

Avoid touching electronic parts or terminal contacts; handle electronic control assembly

by edges only.

When repackaging main control assembly in anti-static bag, observe above instructions.

Voltage Measurement Safety Information

When performing live voltage measurements, you must do the following:

Verify the controls are in the off position so that the appliance does not start when energized.

Allow enough space to perform the voltage measurements without obstructions.

Keep other people a safe distance away from the appliance to prevent potential injury.

Always use the proper testing equipment.

After voltage measurements, always disconnect power before servicing.

PAGE 2

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

WHIRLPOOL CONTROL PANEL (features and appearances may vary between models)

Rotating the cycle selector knob turns off each

corresponding cycle indicator. (Features and

appearances vary between models).

POWER button: press once to turn off

indicator. Press twice to exit service

diagnostic mode and return to

standby mode.

START/PAUSE button: begin

or continue test. Press once

to turn off indicator.

Static Reduce button: press

once to turn off indicator.

Not available on all models.

Wrinkle Shield button: press

once to turn off indicator.

Not available on all models.

Option buttons: press each

button once to turn off

its respective indicator.

Figure 1 - User Interface Test

Timed Dry Adjust (q) button: press once

to turn off top segment of display.

Press each modiﬁer button

once to turn off its respective

display segment.

Timed Dry Adjust (p)

button: press once to turn off

seven-segment display.

PAGE 3

FOR SERVICE TECHNICIAN’S USE ONLY

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DIAGNOSTIC GUIDE

Before servicing, check the following:

Make sure there is power at the wall outlet.

Has a household fuse blown or circuit breaker

tripped? Was a regular fuse used? Inform

customer that a time-delay fuse is required.

Is dryer vent properly installed and clear

of lint or obstructions?

All tests/checks should be made with a

VOM (volt-ohm-milliammeter) or DVM

(digital-voltmeter) having a sensitivity of

20,000 Ωper volt DC or greater.

Resistance checks must be made with

dryer unplugged or power disconnected.

IMPORTANT: Avoid using large

diameter probes when checking harness

connectors as the probes may damage

the connectors upon insertion.

Check all harnesses and connections

before replacing components. Look for

connectors not fully seated, broken or

loose wires and terminals, pin insertion,

or wires not pressed into connectors

far enough to engage metal barbs.

A potential cause of a control not

functioning is corrosion or contamination on

connections. Use an ohmmeter to check for

continuity across suspected connections.

SERVICE DIAGNOSTIC MODE

These tests allow service personnel to test

and verify all inputs to the machine control

electronics. You may want to do a quick and

overall checkup of the dryer with these tests

before going to speciﬁc troubleshooting tests.

ACTIVATING SERVICE DIAGNOSTIC MODE

1. Be sure the dryer is in standby mode

(plugged in with all indicators off).

2. Select any three (3) buttons (except

POWER) and follow the steps below, using

the same buttons (remember the buttons and

the order that the buttons were pressed):

Within 8 seconds,

•Press and Release the 1st selected button,

•Press and Release the 2nd selected button,

•Press and Release the 3rd selected button;

•Repeat this 3 button sequence 2 more times.

3. If this test mode has been entered

successfully, all indicators on the console are

illuminated for 5 seconds with “888” showing

in the Estimated Time Remaining three-digit

display. If there are no saved fault codes, all

indicators on the console will momentarily

turn off, and then only the seven segment

display will come back on and display “888”.

NOTE: The Service Diagnostic mode will time

out after 5 minutes of user inactivity, or shut

down if AC power is removed from the dryer.

Unsuccessful Activation

If entry into diagnostic mode is unsuccessful,

refer to the following indications and actions:

Indication 1:None of the indicators or display turn on.

Action: Select any cycle.

If indicators come on, try to change the

function for the three buttons used to activate

the diagnostic test mode. If any button is

unable to change the function, something

is faulty with the button, and it will not be

possible to enter the diagnostic mode using

that button. Replace the user interface

and housing assembly. Refer to Dryer

Disassembly Instructions, page 22.

Button Press Function Behavior

1st Button-Momentary press

- Press and hold for 5 secs.

- Activates User Interface/

- Exits Service Diagnostics

2nd Button-Momentary press

- Press and hold for 5 secs. - Activates Install Diagnostics

- Software Version Display

3rd Button-Momentary press

- Press and hold for 5 secs. - Displays Next Error Code

- Clears the Error Codes

SERVICE DIAGNOSTIC MENU TABLE

Control System Test

PAGE 4

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

If no indicators come on after selecting the

cycle, go to TEST #1, CCU Power Check,

page 9.

Indication 2: Console indicators begin ﬂashing

immediately.

Action: If console indicators begin ﬂashing on

and off immediately, replace the user interface.

Activation with Saved Fault Codes

If there is a saved fault code, it will be

ﬂashing in the display. Review the Fault/Error

Codes table on page 7 for the recommended

procedure. If there is no saved fault code,

“888” will be displayed.

USER INTERFACE/

CONTROL SYSTEM TEST

NOTE: The Service Diagnostic mode must be

activated before entering the User Interface/

Control System Test; see procedure on page 3.

Active Fault Code Display

in User Interface/Control System Test

If the display begins ﬂashing while in User

Interface/Control System Test, it is displaying

an active fault code. Active fault codes are

codes that are currently detected. Only one

active fault code can be displayed at a time.

Entry Procedure

Press and release the 1st button used

to activate Service Diagnostic mode.

The following tests will be available:

1. DIAGNOSTIC: Console Buttons

and Indicators

Pressing each button will turn off its

corresponding indicator(s) or display segment

and sound a beep as shown in ﬁgure 1, page 2.

Rotating the cycle selector knob turns off each

corresponding cycle indicator.

NOTE: A second press of the POWER button

while in Console Buttons and Indicators mode

exits the Service Diagnostic mode and returns

the dryer to standby mode.

If indicators do not come on and beep

after pressing buttons and rotating the cycle

selector knob, go to TEST #6: Buttons and

Indicators, page 19.

2. DIAGNOSTIC: Console ID, Motor,

Heater, and Water Valve

Make sure the door is closed, and then press

the START button. The dryer will beep and the

motor, heater, and water valve will turn on. The

console ID will be displayed on the LED (l:99

or s:99). Opening the door stops the motor,

heater, and water valve.

If the Console ID is not displayed, replace

the user interface and housing assembly.

If the motor does not turn on, go to TEST

#3: Motor Circuit, page 12.

If no heat is detected, go to TEST #4:

Heat System, page 13.

If no water is detected, go to TEST #9:

Water Valve, page 20.

3. DIAGNOSTIC: Door Switch/Drum LED

Opening the door should display “p6 e” (electric)

or “p69” (gas) and turn on the drum light.

Closing the door should turn off the drum light.

If opening the door does not cause “p6 e”

(electric) or “p69” (gas) to be displayed,

go to TEST #7: Door Switch, page 19.

If opening the door does not turn on the

drum light, go to TEST #8: Drum LED,

page 20.

4. DIAGNOSTIC: Moisture Sensor

Open the door and locate two metal strips

on the face of the lint screen housing. Bridge

these strips with a wet cloth or a ﬁnger.

If a repeating beep is heard and an

alphanumeric number is displayed on the

console, the sensor is good.

If not, or if a beep tone is heard before

bridging the moisture strips, go to TEST #5:

Moisture Sensor, page 18.

Exit Procedure

To exit User Interface/Control System Test,

press the POWER button once or twice

(depending on diagnostic procedure).

PAGE 5

FOR SERVICE TECHNICIAN’S USE ONLY

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INSTALL DIAGNOSTICS

NOTE: The Service Diagnostic mode must be

activated before entering Install Diagnostics;

see procedure on page 3.

NOTE: If, at any point, the user presses the

POWER button or opens the door during Install

Diagnostics, the dryer exits to standby mode.

Active Fault Code Display

in Install Diagnostics

If the display begins ﬂashing while in Install

Diagnostics, it is displaying an active fault

code. Active fault codes are codes that are

currently detected. Only one active fault code

can be displayed at a time.

Entry Procedure

To enter Install Diagnostics, press and release

the 2nd button used to activate the Service

Diagnostic mode. All LEDs turn off and the

START button begins to ﬂash.

WATER-ONLY TEST: Press and hold the

START button for 5 seconds to run only the

water system test.

PERFORM ALL TESTS: Press and release the

START button to run ALL tests indicated in the

chart below.

Exit Procedure

When test is complete, press the POWER

button to exit Install Diagnostics and return

to standby mode.

STEP TEST TEST DRYER FUNCTION COMPONENT NOTES

1Dryer starts L2 detection algorithm. Motor On Display shows “- - -” until voltage is

available at UI.

2L2 detection complete. Motor On

• If Electric: Display L2 level (range 0

to 200).

• If Gas: Display “9s” for gas since L2

does not exist.

3Dryer starts L1 detection algorithm.

Airflow detection starts at this step. Motor On

Heater On L2 continues to be displayed.

4L1 detection complete.

CCU calculates L1 to L2. Motor On

Heater On/Off

Once L1 is calculated, L1 to L2 is

immediately calculated in the CCU.

5Press the START button to cycle

through L1, L2, and L1 to L2. Motor On

Heater On/Off

• L1 voltage should be 120 VAC ± 10%.

• L2 voltage should be 120 VAC ± 10%,

or “9s” if gas dryer.

• L1 to L2 voltage should be 240* VAC

± 10%, or “9s” if gas dryer.

6Airflow test near completion. Motor On

Heater On/Off

The display will count down the final 15

seconds of the AirFlow detection routine.

7Airflow detection complete. Motor Off

Heater Off

When the airflow routine is complete,

the seven-segment display will show

airflow result (0=BAD, 1=GOOD,

2=INVALID).

8Press the START button to begin

water system test. Water Valve On

Drum Light On Display shows “h28” when running.

9Steam test running. LED drum light

and water turn on. Water Valve On

Drum Light On Water and LED drum light are actuated

for 30 seconds.

INSTALL DIAGNOSTICS

NOTE: At any time during the test, press and hold the START button for 5 seconds to jump to the water system test.

* Dryer performance is optimized for 2-phase, 240 VAC service. If complaint is regarding dryer performance and the L1 to L2 voltage

is ~208 VAC, dryer may be connected to a 3-phase service with reduced wattage that will decrease dryer performance.

PAGE 6

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

SOFTWARE VERSION DISPLAY

NOTE: The Software Version Display mode will

time out after 5 minutes of user inactivity and

return to standby mode.

Entry Procedure

To enter Software Version Display, press

and hold the 2nd button used to activate the

Service Diagnostic mode for 5 seconds.

Upon entry, the display will automatically

cycle through the following information:

•CCU software revision code (c: major

revision number, c: minor revision number,

c: test revision number)

•UI code(u: major revision number, u: minor

revision number, u: test revision number)

•UI Hex ﬁle software revision code (h: major

revision number, h: minor revision number)

Exit Procedure

Pressing the POWER button will exit Software

Version Display and return dryer to standby mode.

FAULT/ERROR CODES

Refer to customer fault/error codes below and

service fault/error codes on page 7.

Fault/Error Code Display Method

Fault codes are displayed by alternately

showing F# and E#. All fault codes have an

F# and an E#. The F# indicates the suspect

System/Category. The E# indicates the

suspect Component system.

Up to four Fault/Error codes may be stored.

When the oldest fault code is displayed,

additional presses of the 3rd button will result

in a triple beep, then display of the most recent

fault code. If each press of the 3rd button

results in a triple beep and the display shows

“888”, no saved fault codes are present.

Advancing Through Saved Fault/

Error Codes

Procedure for advancing through saved

fault codes:

Press and release gbeep tone gmost recent fault

the 3rd button code is displayed.

used to activate

Service Diagnostics

Repeat gbeep tone gsecond most

recent fault code

is displayed.

Repeat gbeep tone gthird most

recent fault code

is displayed.

Repeat gbeep tone gfourth most

recent fault code

is displayed.

Repeat gtriple beep gback to the most

recent fault code.

Clearing Fault Codes

To clear stored fault codes, enter Service

Diagnostic mode. Then press and hold the

3rd button used to enter Service Diagnostic

mode for 5 seconds. Once the stored fault

codes are successfully erased, the seven

segment display will show “888”.

EXITING SERVICE DIAGNOSTIC MODE

Use either of the two methods below to exit

diagnostic mode.

•Pressing and holding the 1st button

used to activate the Service Diagnostic

mode for 5 seconds.

•Pressing the POWER button once or twice,

depending on diagnostic procedure.

CODE DESCRIPTION EXPLANATION AND RECOMMENDED PROCEDURE

PF Power Failure PF indicates that a power failure occurred while the dryer was running.

Press START to continue the cycle, or press POWER to clear the display.

AF Restricted Air Flow Indicates low air flow that may affect dryer performance. Confirm that

airflow system is not blocked. Check lint screen, exhaust duct, exhaust fan.

• Refer to Fault/Error Code “F4E3”, page 7, for recommended procedure.

L2 Low Line Voltage L2 indicates low L2 voltage (less than 30 V) is detected at the CCU.

• Refer to Fault/Error Code “F4E4”, page 7, for recommended procedure.

CUSTOMER FAULT/ERROR CODES

PAGE 7

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

CODE DESCRIPTION EXPLANATION AND RECOMMENDED PROCEDURE

F1E1 Cycle Control Unit

(CCU) Problem Indicates a CCU problem.

• Verify all connections to and from the CCU.

• See TEST #1: CCU Power Check, page 9.

F2E1 User Interface (UI)

Problem (stuck button) Indicates a stuck button (depressed for over 20 seconds) or UI

mismatch. This fault code will ONLY appear when in the service

diagnostic mode. See TEST #6: Buttons and Indicators, page 19.

F2E2 User Interface Appears if UI cannot read EEPROM software from UI.

• Verify all connections between CCU and UI.

• Replace the UI.

F2E3 User Interface

Software Error 2Appears if main control EEPROM is not programmed correctly.

• Replace the UI.

F3E1 Exhaust Thermistor

Open Indicates that the exhaust thermistor is open. Temperature drops

below 18° F (> 50k ohms). See TEST #4a: Thermistors, page 15.

F3E2 Exhaust Thermistor

ShortedIndicates that the exhaust thermistor has shorted. Temperature

above 250° F (< 500 ohms). See TEST #4a: Thermistors, page 15.

F3E3 Inlet Thermistor Indicates that the Inlet Thermistor is open. Temperature drops

below 18° F (>245k ohms). See TEST #4a: Thermistors, page 15.

F3E4 Inlet Thermistor Indicates that the Inlet Thermistor is shorted. Temperature above

391° F (< 328 ohms). See TEST #4a: Thermistors, page 15.

F3E5 Inlet and Exhaust

Thermistor Open Indicates that the Inlet and Exhaust Thermistors are open.

Will occur if the P14 connector is not plugged into the CCU.

F3E6 Moisture Sensor

Open Indicates the moisture sensor strip is open. This fault code will

only appear when in the service diagnostic mode. See TEST #5:

Moisture Sensor, page 18. .

F3E7 Moisture Sensor

Shorted

Indicates that the moisture sensor strip has shorted. This fault

code will ONLY appear when in the service diagnostic mode.

See TEST #5: Moisture Sensor, page 18. .

F4E1 Heater Relay or

Connector Problem

Indicates no voltage detected at the heater relay. This fault code

appears ONLY when in the Diagnostic Test Mode.

• Unplug dryer or disconnect power and check that the wires are

plugged into the heater element(s) and the relay(s) on the CCU.

F4E3 Restricted Air Flow Indicates low air flow that may affect dryer performance.

• Confirm that airflow system is not blocked, check lint screen,

exhaust duct, exhaust fan. .

F4E4 L2 Line Voltage

Error

L2 indicates low L2 voltage (less than 30 V) is detected at the CCU.

• Check to see if a household fuse has blown or a circuit breaker

• Confirm the power cord is properly installed and plugged

• Check the relay connections on the CCU.

• Gas Models Only: Check the P14 connection on the CCU.

F6E1

F6E2

Communication Error

UI to CCU

Communication Error

CCU to UI

Communication between the CCU and UI has not been detected.

• Check the harness continuity and connections between the CCU

• Check AC and DC supplies. See TEST #1: CCU Power Check,

• Replace the User Interface.

• Replace the CCU.

SERVICE FAULT/ERROR CODES

Software Error 1

Open

Shorted

has tripped.

into the power outlet.

(Harness loopback on Pins 4 & 5)

page 9.

and UI.

PAGE 8

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

TROUBLESHOOTING GUIDE

PROBLEMPOSSIBLE CAUSE CHECKS & TESTS

No power to dryer. Check power at outlet, check circuit breaker,

fuses, or junction box connections.

Connection problem between AC plug and dryer.See Test #2: Supply Connections, page 10.

Connection problem between CCU and UI.Check connections and harness continuity

between CCU and UI.

Power supplies not present at machine electronics. See Test #1: CCU Power Check, page 9.

User Interface problem. SeeTest #6: Buttons & Indicators, page 19.

Door not fully closed or striking the door latch.Be sure the door is completely closed,

then press and hold the START button.

Door Switch problem. See Test #7: Door Switch, page 19.

Drive Belt / Belt Switch problem. See Test #3: Motor Circuit, page 12.

Thermal Fuse / Motor problem. See Test #3: Motor Circuit, page 12.

User Interface problem. SeeTest #6: Buttons & Indicators, page 19.

CCU problem. See Test #1: CCU Power Check, page 9.

Poor airflow.Check lint screen and exhaust vent. Clean

if necessary.

Check the Pause/Cancel button. Perform UI Component Test under

ComponentActivation.

Moisture Sensor problem. See Test #5: Moisture Sensor, page 18.

Thermistor problem. See Test #4a: Thermistors, page 15.

User Interface problem. SeeTest #6: Buttons & Indicators, page 19.

CCU problem. See Test #1: CCU Power Check, page 9.

User selects invalid option. Refer customer to “Use and Care Guide”.

User Interface problem. SeeTest #6: Buttons & Indicators, page 19.

Drive Belt / Belt Switch problem. See Test #3: Motor Circuit, page 12.

Thermal Fuse (elect. Only). See Test #4b: Thermal Fuse, page 17.

Door switch problem. See Test #7: Door Switch, page 19.

Motor problem. See Test #3: Motor Circuit, page 12.

CCU problem. See Test #1: CCU Power Check, page 9.

Check installation. Verify proper dryer installation.

Check for L1 and L2. Perform CCU L1 and L2 tests under Install

Diagnostics.

Heater system malfunction or open heater coil. See Test #4: Heat System, page 13.

CCU problem. See Test #1: CCU Power Check, page 9.

Heater coil shorted. See Test #4: Heat System, page 13.

Heater relay shorted. See Test #4: Heat System, page 13.

Heater system problem. See Test #4: Heat System, page 13.

Dryness setting for auto cycles.Increase drying times for one or more

Lint screen full. Clean if necessary. Refer customer

to “Use and Care Guide”.

Heater vent clogged. Clean if necessary. Refer customer

to “Use and Care Guide”.

Moisture Sensor problem. See Test #5: Moisture Sensor, page 18.

Adjust Customer Focused Dryness Level. See Test #5a: Adj. Cust. Focused

Dryness Check, page 18.

Steam cycle not selected. Refer customer to “Use and Care Guide”.

No water to valve. Verify water supply is turned on.

No water from valve. See Test #9: Water Valve, on page 20.

WATER VALVE NOT DISPENSING

(Water valve is activated intermittently

during the steam cycle.)

WILL NOT HEAT

HEATS INAIR CYCLE

SHUTS OFF BEFORE CLOTHES

ARE DRY

DRUM WILL NOT SPIN

CONSOLE WON’T ACCEPT

SELECTIONS

WILL NOT POWER UP

- No operation

- No keypad response

- No LED's or display

WILL NOT START CYCLE

(No response when Start button

is pressed.)

WILL NOT SHUT OFF

WHEN EXPECTED

auto cycles.

PAGE 9

FOR SERVICE TECHNICIAN’S USE ONLY

DO NOT REMOVE OR DESTROY

TROUBLESHOOTING TESTS

IMPORTANT: The following procedures

may require the use of needle probes

to measure voltage. Failure to use needle

probes will damage the connectors.

TEST #1: CCU Power Check

This test checks for incoming and outgoing power

to and from the Cycle Control Unit (CCU). This test

assumes that proper voltage is present at the outlet.

1. Unplug dryer or disconnect power.

2. Check for appropriate line voltages at the

outlet: 240VAC (electric 2-phase), 208VAC

(electric 3-phase), or 120VAC (gas).

If line voltage is present, go to step 3.

If line voltage is not present, check for

tripped circuit breaker or blown household

fuse. If CB (circuit breaker) is not tripped,

have customer check with qualiﬁed

electrician.

3. Remove top panel to access the machine

electronics.

4. Plug in dryer or reconnect power.

5. CCU AC – With voltmeter set to AC,

connect black probe to CCU P8-3 (N) and

red probe to P9-2 (L1). (See Figure 2.)

If 120VAC is present, go to step 6.

If 120VAC is not present, perform TEST

#2: Supply Connections, page 10.

6. CCU +5VDC – With voltmeter set to DC,

connect black probe to CCU P2-3 (ground)

and red probe to P2-1 (+5VDC).

If +5VDC is present, go to step 9.

If +5VDC is not present, go to step 7.

7. Unplug dryer or disconnect power. Unplug

P14 from the CCU. Plug in dryer or reconnect

power and repeat step 6.

If +5VDC returns, one of the thermistors

have shorted. To diagnose thermistors,

see TEST #4a, page 15.

If +5VDC is not present, go to step 8.

8. Unplug dryer or disconnect power.

Reconnect P14 to the CCU and unplug P2 from

the CCU. Plug in dryer or reconnect power and

repeat step 6. Perform voltage check inside

header P2 on CCU, between pins 1 & 3—DO

NOT SHORT PINS TOGETHER.

Figure 2 - CCU Connectors & Pinouts

P2 – WIDE TO UI (+5 VDC)

P2-1 BLK +5VDC

P2-2 BLU DATA

P2-3 YEL 5V GND

P8 – WATER VALVE/DOOR SWITCH

P8-5 OPEN

P8-4 TAN DOOR SWITCH

P8-3 WHT NEUTRAL

P8-2 G/Y CHASSIS GND

P8-1 RED WATER VALVE

P5 – +12VDC

P5-1

P5-2

P5-3 12V GND

P5-4

P5-5

P5-6

P5-7

P5-8 +12VDC

P9 – MOTOR/L1

P9-2 BLK L1

P9-1 LT BLU MOTOR

P13 – MOISTURE SENSOR

P13-2 RED MOISTURE SENSOR

P13-1 BLK MOISTURE SENSOR

P14 – THERMISTORS

P14-6 RED OUTLET THERMISTOR

P14-5 RED MODEL RTN (GAS MODEL)

P14-4 RED MODEL (GAS MODEL)

P14-3 RED OUTLET THERMISTOR

P14-2 RED INLET THERMISTOR

P14-1 RED INLET THERMISTOR

P13

P14

Heater Relay #1

(Gas & Elect.)

L1 – BLK

Heater (E) – VLT

Heater (G) – RED

Heater Relay #2

(Elect. Only)

L1 – BLK Heater – VLT

Motor Relay

•= pin-1

PAGE 10

FOR SERVICE TECHNICIAN’S USE ONLY

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If +5VDC is still missing, replace the CCU.

If +5VDC returns, check harnesses and

connections between the CCU and user

interface (UI). If acceptable, replace the UI.

9. CCU +12VDC – with voltmeter set to DC,

connect black probe to CCU P5-3 (ground)

and red probe to P5-8 (+12VDC).

If +12VDC is present, go to step 10.

If +12VDC is not present, replace the CCU.

10. Unplug dryer or disconnect power.

11. Reassemble all parts and panels.

12. Perform steps under “Install Diagnostics”,

page 5, to verify repair.

TEST #2: Supply Connections

This test assumes that proper voltage is

present at the outlet, and for U.S. installations,

a visual inspection indicates that the power

cord is securely fastened to the terminal block

(electric dryer) or wire harness connection

(gas dryer).

ELECTRIC DRYER (U.S. Installations):

1. Unplug dryer or disconnect power.

2. Remove the cover plate from the top right

corner of the back of the dryer. See ﬁgure 3.

3. With an ohmmeter, check for continuity

between the neutral (N) terminal of the plug

and the center contact on the terminal block.

See ﬁgure 4a.

If there is no continuity, replace the power

cord and test the dryer.

If there is continuity, go to step 4.

4. In a similar way, check which terminal of

the plug is connected to the left-most contact

on the terminal block and make a note of

it. This will be L1 (black wire) in the wiring

diagram. See ﬁgure 4a.

When this is found, go to step 5.

If neither of the plug terminals have

continuity with the left-most contact of the

terminal block, replace the power cord and

retest dryer.

5. Access the machine electronics without

disconnecting any wiring to the CCU (See

Dryer Disassembly Instructions, page 22).

6. With an ohmmeter, check for continuity

between the L1 terminal of the plug (found

in step 4) and P9-2 (black wire) on the CCU.

If there is continuity, go to step 7.

If there is no continuity, check that wires to

the terminal block are mechanically secure.

If so, replace the main wire harness and

test the dryer.

7. Check for continuity between the neutral

(N) terminal of the plug and P8-3 (white wire)

on the CCU.

If there is continuity, go to step 8.

If there is no continuity, and the mechanical

connections of the wire are secure, replace

the main wire harness.

8. Visually check that ALL connectors are

fully inserted into the CCU.

9. Visually check that ALL connectors are

fully inserted into the UI.

10. Reassemble all parts and panels.

11. Plug in dryer or reconnect power.

12. Perform steps under “Install Diagnostics”,

page 5, to verify repair.

ELECTRIC DRYER (Canadian Installations):

1. Unplug dryer or disconnect power.

2. Remove the cover plate from the top right

corner of the back of the dryer. See ﬁgure 3.

3. Access the machine electronics without

disconnecting any wiring to the CCU (see

Dryer Disassembly Instructions, page 22).

Figure 3 - Remove the cover plate.

COM

NL1

Figure 4a - Plug-to-terminal connections

for electric dryer.

Power Cord

Plug

Terminal Block

Cover Plate

Remove Screw

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