Inglis IGD7300WW1 Parts Diagram

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

IMPORTANT

Electrostatic Discharge (ESD)

Sensitive Electronics

ESD problems are presenteverywhere. ESD may damage or weaken the machinecontrol electronics.Thenew control assemblymayappearto workwell after repair is finished, but failure 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 metalin the appliance.

■

Touch your finger repeatedly to a greenground connection pointor unpainted metal in the appliance.

■

Before removingthe partfrom its package, touch the anti-static bag to a greenground connection pointor unpaintedmetal in the appliance.

■

Avoid touching electronicparts or terminal contacts; handle electronic control assembly by edges only.

■

Whenrepackaging failed machine controlelectronics in anti-static bag, observe above instructions.

-OR-

DIAGNOSTIC GUIDE

■

Before servicing, check the following:

■

Makesure there is poweratthe wall outlet.

■

Has a household fuse blown or circuit breaker

■

tripped? Wasa regularfuse used? Use a timedelay fuse.

■

Is dryer vent properly installedand clear of lint

■

or other obstructions?

■

All tests/checks should be madewith a VOM(volt-ohm-milliammeter) or DVM (digital-voltmeter) having a sensitivity of 20,000 Ω per volt DC or greater.

■

Check all connections before replacing components.Look forbrokenorloose wires, failed terminals,orwires notpressed into

SERVICE DIAGNOSTIC MODE ENTRY

These tests allow factoryor service personnel to testand verify all inputs to the machine control electronics. Youmay want to do a quick and overall checkup of the dryerwith these tests before going to specific troubleshooting tests.

connectors far enough.

PART NO. W10386307B PAGE 1

A potentialcause ofa controlnotfunctioningis corrosiononconnections.Observeconnections and checkforcontinuity withan ohmmeter.

Connectors: Look at top of connector. Check for brokenor loose wires.Check for wires not pressed into connector far enough to engage metal barbs.

Resistance checks must be made with dryer unplugged or powerdisconnected.

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

ACTIVATING THE SERVICE DIAGNOSTIC MODE

1. Be sure the dryer is in standby mode

(plugged in with allindicatorsoff,or with only the DONE [on some models] or COMPLETE [on some models] indicator on).

2. Select any threebuttons and follow the steps below,using the same buttons (rememberthe buttons and the order that the buttons were pressed):

Within 8 seconds,

Press and Release the 1st selectedbutton, Press and Release the 2nd selectedbutton, Press and Release the 3rd selectedbutton; Repeat this3 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 somemodels showing

88 in the EstimatedTime Remaining

two-digit display. If there areno saved fault codes,all indicators on the console will momentarily turn off,thenonly the seven segment display (on somemodels) willcome backon and display onlythe WET indicator will comeon and stay on constantly.

SERVICE DIAGNOSTIC MENU TABLE

1st Button Momentary press ActivatesUser Interface/

2nd Button Momentary press TripleBeep

3rd Button Momentarypress DisplaysNextErrorCode

Unsuccessful Activation

If entry into diagnostic mode is unsuccessful, refer to the following indications and actions:

Indication 1:

turns on.

Action:

Select any cycle.

If indicators comeon, try to changethe



function for the three buttons used to activate the diagnostic test mode.

88,and,on other models,

Button Press Function Behavior

Press and hold Exits Service Diagnostics for 5 secs.

Press and hold TripleBeep for 5 secs.

Press and hold Clears the ErrorCodes for 5 secs.

Noneof the indicators or display

Control SystemTest

If any button fails 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.See Accessing & Removingthe ElectronicAssemblies,page 21.

If no indicators comeon after selecting the



cycle,go to TEST #1,page 12.

Indication 2:

Console indicatorsbegin

flashingimmediately.

Action:

If console indicators begin flashing on and off immediately, replace the user interface. SeeAccessing & Removing the Electronic Assemblies,page 21.

Activation With Saved Fault Codes (models with seven segment display)

If there is a saved fault code, it will be flashing in the display.Review the Fault/Error Codes table, page4, for the recommended procedure.

If there is nosaved fault code,

88 will be displayed.

(models without seven segment display)

If there is a saved fault code, only theWET indicator will be flashing.Review the Fault/Error Codes table for the recommended procedure.

Fault/Error Code Display Method (models with seven segment display)

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 Componentsystem.

(models without seven segment display)

Fault codes are displayed by a series of flashes of theWET indicator.All fault codeshave an F# and an E#.The first set of 0.5 second flashes should be counted and used as the F#.The F# indicates the suspect System/Category.The second set of

0.5 secondflashes should againbe counted and usedas the E#.The E# indicates thesuspect Component system.The transition from the F# to the E# is indicated by a 2 second pause.After the E# is displayed,there will be a 5 secondpause before the F# is flashed again.

Below showshow F3E6 would be displayed:

3 flashes ➔ 2 second pause➔ 6 flashes ➔ 5 second pause

PAGE 2

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Advancing Through Saved Fault/ Error Codes

Procedure for advancingthrough savedfaultcodes:

Press and release Most

the 3rd button beep recent fault

usedto activatetonecodeis

Service Diagnostics displayed.

Repeat

Up to four Fault/Error codes may be stored. Whenthe oldest fault code is displayed,additional presses of the 3rd button willresult in a triple beep, then display of (or cycling back to) the most recent fault code. If eachpress of the 3rd button results in a triple beep and the display shows (on modelswith seven segment display) or the WET indicator is constantly lit(on models without seven segment display), no saved fault codes are present.

beep recent fault



tonecodeis

beep recent fault



tonecodeis

beep recent fault



tonecodeis

Triple beep,then backto



themostrecentfaultcode.

Second most

displayed. Third most

displayed. Fourth most

displayed.

Clearing Fault Codes

To clear fault codes,enter ServiceDiagnostic mode. Then press and hold the 3rd button used to enter Service Diagnostic mode for 5 seconds.Once the faultcodesaresuccessfully erased,theseven segmentdisplay will show sevensegment display) or theWET indicator will belitconstantly (on models without seven segmentdisplay).

88 (on models with

PAGE 3

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

FAULT/ERROR CODES

The fault codes below wouldbe indicated when attempting to starta drying cycle, or after activating the service diagnostic mode.

Code Description Explanation/Recommended Procedure

pf Power Failure PF indicates that a power failure occurred while the

f1 e 1 Primary Control Failure F1E1indicates a primarycontrol failure.

f2 e 1 Keypad/User F2E1indicates a stuck button or user interface

f3 e 1 ExhaustThermistor Open F3E1indicates that the thermistor is open.

f3 e 2 ExhaustThermistor Shorted F3E2 indicates that the thermistor has shorted.

f3 e 6 Moisture Sensor Open F3E6 indicates that the moisture sensor strip is open.

f3 e 7 Moisture Sensor Shorted F3E7indicates that the moisture sensor striphas

f8 e 1 Water ValveFailure F8E1indicates that no voltage is detectedat the water

(on some models) dryer was running.

■ Press START/PAUSE to continue the cycle,or press

POWER or POWER/CANCEL (Maytag models) to clear the display.

■ Replace the machine control electronics.See

Accessing & Removing theElectronicAssemblies, page21.

Interface Failure mismatch.This fault code will ONLY appear when

in the servicediagnosticmode.

■ See TEST #5, page 20.

■ See TEST #3a,page 17.

This fault code willONLY appear whenin the service diagnostic mode.

■ See TEST #4, page 18.

shorted.This fault codewill ONLYappearwhen in the service diagnostic mode.

■ See TEST #4, page 18.

(Steam Models Only) valve relay.This fault code will ONLYappearwhen in

the servicediagnosticmode.

■ See TEST #7, page 21.

PAGE 4

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Wet

Damp

Cool Down

Done

Wet

Damp

Cool Down

Done

High

Medium

Low

Air Dry

USER INTERFACE/ CONTROL SYSTEM TEST

Entry Procedure:

Press and release the firstbutton used to activate Service Diagnostic mode.The following testswill be available.

NOTE:The Service Diagnostic mode must be activated before activating the UserInterface/ Control Systemtest; see procedureon page 2.

Active Fault CodeDisplay in User Interface/Control System Test:

If the display (on models withseven segment display) or WET indicator (on modelswithout seven segment display) begins flashing while in UserInterface/ControlSystemtest,it is displaying an active fault code. Activefault codes are codes thatare currently failing.Only one activefault codecan be displayed at a time.

Diagnostic Test: Console Buttons and Indicators (models with seven segment display and some models without seven segment display)

Pressing buttons and rotatingthe cycle selector will turn off the correspondingindicator and sound a beep as shown in figure 1, Console Diagnostics.If indicators failto come on and beep after pressing buttons and rotatingthe cycle selector, go to TEST #5, page 20.

(all models)

NOTE: A second press of the POWER (POWER/ CANCEL on Maytag models) button whilein Console Buttons andIndicatorsmode exits the Service Diagnostic mode and returns the dryer to standby mode.

Diagnostic Test: Door Switch (models with seven segment display)

Opening the door shouldcause a beep and an alphanumeric number to be displayed. Closing the door should cause a beep and

88 to be

displayed. If opening the door fails to cause a beep and

an alphanumeric number to be displayed, go toTEST #6,page 20.

(models without seven segment display)

Whenthe dooris opened, for electric dryers,the dryer will beep once and the WET statusindicator will turn on.For gas dryers, the dryer will beep twice andthe DONE or COMPLETE (depending on model) status indicator will turn on.Withthe door open, the TEMP indicatorswill be used to display the Control Software ID.The TEMP indicators will be“On”or “Off”according to the table below.

Temp Indicators

(model 9150 without seven segment display)

Pressing buttons willturn off the corresponding indicator and sound a beep as shown in figure 1, Console Diagnostics. Rotating the cycle selector will cause the status indicators to display the

If opening the door fails to cause a beep(s), Control Software ID,or fuel type to be indicated, go toTEST #6,page 20.

index of the cycle selector. See table below for details. If indicators failto come on and beep after pressing buttons and rotating the cycle selector, go toTEST #5,page 20.

Status AUTO CYCLE

Indicator Delicate Casual Normal Eco Normal Heavy Duty

“ON” “ON” “OFF” “OFF” “OFF” “ON” “ON” “OFF” “OFF” “OFF” “ON” “ON” “OFF” “OFF” “ON”

“OFF” “ON” “OFF” “ON” “OFF”

Status TIMED CYCLE

Indicator 60 min 40 min Small Load

“ON” “ON” “OFF” “OFF” “OFF” “ON” “OFF” “OFF” “ON”

“ON” “OFF” “ON”

PAGE 5

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Wet

Damp

Cool Down

Done

High

Medium

Low

Air Dry

If the motor does not turnon, go to TEST #2,

Diagnostic Test: Moisture Sensor

Openthe doorand locate two metal strips on the faceof the lintscreenhousing.Bridge thesestrips witha wet cloth or a finger. If a beep is heard and an alphanumeric number is displayedon the console (on models with seven segment display) or STATUSand/orTEMPindicators change (on



page14.

If no heatis detected,go to TEST #3,page 15.



On steam models only, if nowateris detected,



go to TEST #7, page 21. NOTE: On steam models only,press the POWER

button. models without seven segment display),the sensor is OK. If not,or if a beep tone is heard before bridging the moisture strips, go to TEST #4,page 18.

Diagnostic Test: Console ID, Motor, Heater, and Water Valve (on steam models) (models with seven segment display)

Close thedoor. Pressthe START button.The dryer will beep and the motor, heater, and watervalve

DEACTIVATING TEST MODES

Deactivating the User Interface/

Control SystemTest

This mode can be exitedby either of the two

methods listedbelow:

1. Pressing the POWER button twice.

2. Pressing and holding the 1st buttonused to

activatetheService Diagnostic mode for 5 seconds. (on steam models)will turn on, and the display

will show the following Console ID: 8a, 80,or 83, depending on model.

(models without seven segment display)

Close thedoor. Pressthe START button.The dryer will beep and the motorand heater will turn on.

DEACTIVATING THE SERVICE DIAGNOSTIC MODE

Press and hold the 1st button used to enterthe

Service Diagnostic mode for 5 seconds to exit

diagnostics. The STATUS andTEMP indicators willdisplay the console ID, and the indicators should be lit up as indicated in the table below.

Console ID Indicator StatusTable

Status Indicators Temp Indicators

(all models)

While motor is running,pressingthe START button a second time will turn off the motor, heater, and watervalve (on steammodels).Each additional press of the START button will toggle the motor, heater, and water valve (on steam models) on and off.

If the Console ID is not displayed,replace



the user interface and housing assembly. See Accessing & Removing the Electronic Assemblies, page21.

PAGE 6

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Sensing

Wet

Damp

Cool

Down

Done

Wrinkle

Shield

Steam

ControlLock

First press turns

off the Status, Control

Lock, and Steam

indicators. Second

press exits Service

Diagnostic mode

and dryer returns

to standby mode.

Each press toggles the motor, heater, and water valve

state. The display will show the UI ID code. On Off

or Off On.

➔

Each press toggles state of the least

significant digit (Right) of the seven

segment display. On Off or Off On.

➔➔

Each press toggles state of the most significant

digit (Left) of the seven segment display. On Off

or Off On.

➔

Each press

toggles state

of Wrinkle

Shield indicator.

On Off or

Off On.

➔

Each press toggles

state of Dryness Level

indicators. On Off

or Off On.

➔

Each press toggles state of Temperature

indicators. On Off or Off On.

➔➔

Each press toggles state

of Cycle Signal indicator.

On Off or Off On.

➔➔

Rotating the encoder will turn indicators on

and off individually. On

➔ Off or Off ➔ On.

WHIRLPOOL CONTROLPANEL WITH SEVEN SEGMENT DISPLAY (steam model 9371 shown – features andappearance mayvary)

PAGE 7

Figure 1a. Console Diagnostics.

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

First press turns off

the Control Lock and

Wrinkle Shield indicators.

Second press exits Service

Diagnostic mode and dryer

returns to standby mode.

Each press toggles the Start/Pause

indicator and motor and heater

state. On Off or Off On.

➔➔

Toggles state of Temp indicators with each

press. On Off or Off On.

➔➔

Toggles state of Signal

indicator with each press.

On Off or Off On.

➔➔

Toggles state of Wrinkle Shield indicator

with each press. On Off or Off On.

➔➔

Toggles state of Dryness

indicators with each press.

On Off or Off On.

➔➔

When rotated, the Sensing indicator will turn off and

the remaining Status indicators will display the index

for each position.

WHIRLPOOL CONTROL PANEL WITHOUT SEVEN SEGMENT DISPLAY (model 9150 shown– features and appearance may vary)

Figure 1b. Console Diagnostics.

PAGE 8

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

First press turns off

the Status indicators.

Second press exits

Service Diagnostic

mode and dryer returns

to standby mode.

Each press toggles the Start/Pause indicator and motor

and heater state. On Off or Off On.

➔➔

Toggles state of Temp

indicators with each press.

On Off or Off On.

➔➔

Toggles state of Cycle Signal

indicator with each press.

On Off or Off On.

➔➔

Starting with first press, indicators will turn off or on

one at a time with each press. On

➔ Off or Off ➔ On.

WHIRLPOOL/AMANA/INGLIS/MAGIC CHEF CONTROL PANELWITHOUT SEVEN SEGMENT DISPLAY

(Whirlpool model9050shown – features and appearance may vary)

Figure 1c. Console Diagnostics.

PAGE 9

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

First press turns off the Status, Control

Lock, and Steam indicators. Second

press exits Service Diagnostic mode and

dryer returns to standby mode.

Rotating the encoder will turn

indicators on and off individually.

➔ Off or Off ➔ On.

Each press toggles the motor and heater state. The

display will show the UI ID code. On Off or Off On.

➔➔

Each press toggles state of the least

significant digit (Right) of the seven

segment display. On Off or Off On.

➔➔

Each press toggles state of the most significant

digit (Left) of the seven segment display. On Off

or Off On.

➔

Each press toggles state

of Cycle Signal indicator.

On Off or Off On.

➔➔

Each press toggles state

of Wrinkle Prevent indicator.

On Off or Off On.

➔➔

Each press toggles state of Dryness Level

indicators. On Off or Off On.

➔➔

Each press toggles state of Temp Level

indicators. On Off or Off On.

➔➔

MAYTAG CONTROL PANEL (steammodel 301 shown – features and appearance may vary)

Figure 1d. Console Diagnostics.

PAGE 10

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

TROUBLESHOOTING GUIDE Some tests will require accessing components.

Problem Possible Cause/Test

NOTE: Possible Cause/Tests MUST be performed

in the sequence shown for each problem.

Won’t power up. (No response 1. Supply connections. See TEST #1, page 12. when buttons are pressed.)

Won’t start cycle when Start 1. If number display flashes, check to be sure the button is pressed. door is completely shut, and press and hold down

Won’t shut off when expected. 1. Check START/PAUSE button.

Control won’t accept selections. User interface and housing assembly.

Won’t heat. 1. Check installation.

Heats in air cycle. Heater. See TEST #3, page 15. Shuts off before clothes are dry. 1. Check the dryness or dryness level

Steam Models Only: Water not dispensing. 1. Make sure a “Steam” cycle is selected.

2. Unplug dryer or disconnect power. Check harness connections.

3. User interface and housing assembly. See TEST #5, page 20.

START for about 1 second.

2. See TEST #2, page 14.

3. See TEST #6, page 20.

2. User interface and housing assembly. See TEST #5, page 20.

3. Moisture sensor. See TEST #4, page 18.

See TEST #5, page 20.

2. Unplug dryer or disconnect power. Check harness connections.

3. Heater. See TEST #3, page 15.

(depending on model) setting for auto cycles.

2. Check for full lint screen.

3. Check for clogged vent.

4. Moisture sensor. See TEST #4, page 18.

5. Dryness or dryness level (depending on model) adjust. See TEST #4a, page 19.

2. See TEST #7, page 21.

PAGE 11

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

COM

If neither of the plug terminals havecontinuity

TROUBLESHOOTING TESTS

NOTE: These checks are done with the dryer unplugged or disconnectedfrom power.

TEST #1 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).

Remove

Screw



withthe left-most contact of the terminal block, replace the powercord and test the dryer.

5. Access the machine controlelectronics without disconnecting any wiring to the control board.See Accessing & Removing the Electronic Assemblies,page21.

6. With an ohmmeter, check for continuity between the L1 terminal of the plug (foundin step

4) and P9-2 (black wire) on the machine control board.See figure 15,page 23.

If there is continuity, go to step 7.



If there is no continuity, check that wires to the



terminalblockare mechanically secure. If so, replace the main wire harness and test the dryer.

7. Check for continuity between the neutral (N)

Cover Plate

Figure 2. Remove the cover plate.

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 2.

3. With an ohmmeter, check for continuity between the neutral (N) terminal of the plug and the centercontact on the terminalblock. See figure 3a.

If there is no continuity, replace the power



cordand testthe 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-mostcontact on the terminalblockand make a note of it.Thiswill be L1(blackwire)in the wiring diagram.See figure3a.

Power Cord

Plug

Terminal Block

terminalof the plugand P8-3 (whitewire) on the machine control board.

If there is continuity, go to step 8.



If there is no continuity and the mechanical



connectionsof the wireare secure,replace the mainwire harness.

8. Visually check that the P5 connectoris insertedall the way into the machine control electronics.

9. Visually check that the user interface and housing assembly is properly inserted into the front console.

10. If bothvisual checks pass,replace the userinterfaceand housing assembly.

11. Reassemble all parts andpanels.

12. Plugin dryer or reconnect power.

13. Activate the Service Diagnostic mode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

14. If indicators still do not light, the machine control electronics hasfailed:

Unplug dryer or disconnect power.



Replace the machine control electronics.



Reassemble all partsand panels.



Plugin dryer or reconnect power.



Activate the Service Diagnostic modeper



procedure on page2. Then activate the User

Figure 3a. Plug-to-terminal connections for electric dryer.

Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

PAGE 12

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

P/N XXXXXX Rev X

DateCode YDDD-xx

XXXX-XXX

MADEIN COO

COM

Neu

ELECTRIC DRYER (Canadian Installations):

1. Unplug dryer or disconnect power.

2. Remove the cover plate from the top right

corneroftheback ofthe dryer. See figure 2,page 12.

3. Access the machine controlelectronics without disconnecting any wiring to the control board.See Accessing & Removing the Electronic Assemblies,page21.

4. With an ohmmeter, check thecontinuity from L1andN plugterminalsof the power cordto the terminals for L1andN onthemachine control electronics. See figure3b.

Power Cord

Plug

Machine Control

Electronics

Figure 3b. Plug-to-terminal connections for electric dryer.

If continuity exists for both connections,



go to step 6.

Ifan open circuit is found,check theintegrity of



theconnectionsof the power cord to the harness in the dryer; harness to themachine control board; and, the integrity of thepower corditself.

5. If it is necessary to replace the powercord, remove the retaining clip that secures the cord to the back panel. See figure 4. Disconnect the cordfrom themain harness and the ground wire fromthe rearpanel,thenpull outthe powercord.

6. Visually check that theP5 connector is inserted alltheway into the machine controlelectronics.

7. Visually check thatthe user interface andhousing assembly is properlyinsertedinto thefrontconsole.

8. If both visual checks pass, replace the user interface and housing assembly.

9. Reassemble all parts and panels.

10. Plugin dryer or reconnect power.

11. Activate the Service Diagnostic mode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

12. If indicators still do not light, the machine control electronics hasfailed:

Unplug dryer or disconnect power.



Replace the machine control electronics.



Reassemble all partsand panels.



Plugin dryer or reconnect power.



Activate the Service Diagnostic modeper



procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

GAS DRYER (U.S.and CanadianInstallations):

1. Unplug dryer or disconnect power.

2. Removethe cover platefromthetopright corner

of the back of the dryer. See figure 2, page12.

3. Check that the power cord is firmlyconnected to the dryer’s wire harness.See figure 5.

Wire

Harness

Power

Wire

Harness

Retaining

Clip

Power Cord

Figure 4. Remove the retaining clip.

PAGE 13

Figure 5. Power cord-to-wire harness connection for gas dryer.

4. Access the machine controlelectronics without disconnecting any wiring to the control board.See figure 14a or 14b, page22.

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.

Cord

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

COM

Neu

Masse

Neu

Masse

The left-hand side of figure 6 shows the position of the neutral terminal (N) on the powercord plug. Alsosee figure 15,page 23.

If there is continuity, go to step 6.



If there is no continuity, disconnect the white



wireof the harness from the power cord at the locationillustrated in figure 5, page 13.Test the continuity of the power cord neutral wire as illustrated in figure 6. If an opencircuit is found, replace the powercord.Otherwise, go to step 6.

Power Cord Plug

Figure 6. Power cord terminals, gas dryer.

6. In a similar way, check the continuity between

the L1 terminal of the plug and P9-2 (black wire) on the control board.

If there is continuity, go to step 8.



If there is no continuity, check the continuity of



the power cord in a similar way to that illustrated in figure 6,but for power cord’s L1 wire.

If an open circuit is found, replace the power



cord. Otherwise,go to step7.

7. Replacethemainharness.

8. Visually check thatthe P5 connectoris inserted

all the way intothe machine control electronics.

9. Visually check that the user interface and housing assembly is properly inserted into the front console.

10. If bothvisual checks pass,replace the userinterfaceand housing assembly.

11. Reassemble all parts andpanels.

12. Plugin dryer or reconnect power.

13. Activate the Service Diagnostic mode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators testper procedures on page 5.

14. If indicators still do not light, the machine control electronics hasfailed:

Unplug dryer or disconnect power.



Replace the machine control electronics.



Reassemble all partsand panels.



Plugin dryer or reconnect power.



Activate the Service Diagnostic modeper



procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

TEST #2 Motor Circuit

This test will checkthe wiring to the motor and the motor itself.The followingitems are part of thismotorsystem:

Part of Motor System Dryer Dryer

Harness/connection ✔✔ Thermal fuse ✔ no Belt/belt switch ✔✔ Drive motor ✔✔ Centrifugalswitch ✔✔ Doorswitch ✔✔ Machine control ✔✔

electronics. See ESD information, page1.

1. Unplug dryer or disconnect power.

2. Access the machine controlelectronics and

measure the resistance across P8-4 and P9-1. SeeAccessing & Removing the Electronic Assemblies,page21.

IfresistanceacrossP8-4andP9-1isintherange



of1 to6 Ω,replacethemachine controlelectronics.

Otherwise,go to step 3.



3. Check the wiring and components in the path between these measurement points by referring to the appropriatewiring diagram (gas or electric), pages 25–32.

ELECTRIC DRYER ONLY:

fuse. See TEST#3b,page 18.

ALL DRYERS:

Continue with step 4 below to test

the remaining components in the motorcircuit.

4. Check the belt switch and drivemotor. Access the belt switch and drive motor by removing the backpanel. Slowly remove the drum belt from the spring-loaded belt switch pulley, gently letting the beltswitch pulley down.See figure 7, page 15.

PAGE 14

Electric Gas

Check thethermal

5 3

46 2

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Belt Switch Pulley

Drum

Belt

Figure 7. Slowly remove drum belt.

5. Remove the white connector from the drive

motor switch. See figure 8.

Drive Motor

Switch

White

Connector

Figure 8. Remove white connector.

Main Winding:

Lt. Blue Wire in Back

and Bare Copper Wire

Start

Winding:

Lt. Blue

Wire in

Back

and Bare

Copper

Wire

Belt Switch

Pulley

Figure 9. Mainand startwindingmeasure points andchecking thebeltswitch.

Lt. Blue

Wires

Belt Switch

6. Using figure9, check for the resistancevalues of the motor’s Main and Start windingcoils as shown in the following table:

NOTE: Main and Start winding coils must be checked at the motor.

Resistance Contact Points

Winding Ω of Measurement

backat pin 4 and

MAIN 3.0–4.0 bare copperwire

on pin 5 of black

drive motor switch

backat pin 4 and

START 2.4–3.4 bare copper wire

on pin 3 of black

drive motor switch

If the resistance at the motor is correct,there



is an open circuit between the motor and machine control electronics. Checkfor failed belt switch.

If the Start windingis in question andthe



resistance is much greater than 4 Ω, replace the motor.

7. Checkthe belt switch by measuring resistance between the twolight bluewires,as shown in figure9, while pushing up the beltswitch pulley.

If the resistancereading goes from infinity



to a few ohms as pulley arm closes the switch, beltswitch is OK. If not, replace the beltswitch.

If belt switchis OK and there is stillan open



circuit, check and repairthe wiring harness.

8. Door Switch problems can be uncovered by following procedure under DiagnosticTest:Door Switch, page 5; however, if this wasnot done, thefollowing can be done without applying power to the dryer. Connect an ohmmeter across P8-3 (neutral,white wire) and P8-4(door, tanwire).

With the door properly closed, the ohmmeter



shouldindicate a closed circuit (0–2 Ω).

If not,replace the doorswitch assembly.



TEST #3 Heater

This test is performed when eitherof the following situations occur:

✔ Dryer doesnot heat ✔ Heat will not shut off

This test checks the componentsmaking up the heating circuit.The following itemsare part of thissystem:

PAGE 15

Lt.blue wire in

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

Part of Heating System Dryer Dryer

Electric Gas

Harness/connection ✔✔ Heater relay ✔✔ Thermal cut-off ✔✔ Thermal fuse no ✔ Highlimitthermostat ✔✔ Heatelement assembly ✔ no Gas burnerassembly no ✔ Centrifugalswitch ✔✔ Exhaust thermistor ✔✔ Machine control ✔✔

electronics. See ESD information, page1.

Userinterfaceand ✔✔ housing assembly

Gas supply no ✔

Dryer does not heat:

Locate the components using figure 10.

Heater

Thermal

Cut-Off

Element

ELECTRIC DRYER:

1. Unplug dryer or disconnect power.

2. Remove the toe panel to access the thermal

components.

3. Using an ohmmeter and referring to the wiring diagram,measure the resistance from the red wireterminal at the thermal cut-off to the red wireterminal at the heater.

If the resistanceis about 10 Ω, go to step 5.



If an open circuit is detected, go to step4.



4. Visually check the wire connections to the thermal cut-off, high limit thermostat, and heater. If connections look good, check for continuity across each of these components.

Replace the heaterif it is electrically open.



Replace both the thermal cut-off and high limit



thermostat if either oneis electrically open.

High Limit Thermostat

Flame

Sensor

Thermal

Cut-Off

High Limit Thermostat

Thermal Fuse

Exhaust Thermistor

Electric Dryer

Figure 10. Thermal Components, viewed from front.

PAGE 16

Thermal Fuse

Exhaust Thermistor

Gas Dryer

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

5. If no opencircuitis detected, remove the P14 connector, then measurethe resistance between P14-3 (red-white wire) and P14-6(red-white wire) at theconnector.See figure 15,page 23, for connector location;andAccessing & Removing theElectronicAssemblies, page 21.

If 5–15 kΩ are measured,replace the



machine control electronics.

If the resistance is less than 1 kΩ, replace



theexhaust thermistor.

GAS DRYER:

1. Unplug dryer or disconnect power.

2. Remove the toe panel to access the thermal

components.

3. Perform TEST #3b,page18. If the thermal fuseis OK, go to step 4.

4. Perform TEST #3c,page18. If the thermal cut-off is OK, go to step 5.

5. Locatethe high limit thermostat.See figure

10.Measure the continuity through it by connecting the meterprobeson the red wire and blue wireterminals.

If there is an opencircuit,replace the high



limit thermostatand thethermal cut-off.

Otherwise,go to step 6.



6. Perform TEST #3d,page18. If this is OK, replace the machine controlelectronics.

Heat will not shut off:

1. Unplug dryer or disconnect power.

2. Access the machine controlelectronics.

Remove the P14 connector, then measure the resistance between P14-3(red-white wire) and P14-6 (red-white wire) at the connector. See figure 15, page 23 for connectorlocation; and Accessing & Removing the Electronic Assemblies, page21.

If 5–15 kΩ are measured,replace the



machine control electronics.

If the resistance is greater than 20 kΩ,



replace the exhaust thermistor.

TEST #3a Exhaust Thermistor

The machine control electronics monitors the exhaust temperature using the exhaust thermistor,and cycles the heater relay on and off to maintain the desired temperature.

Begin with an emptydryer and a clean lint screen.

1. Plug in dryer or reconnectpower.

2. Start the Timed Dry cycle.

3. If after 60 seconds, f3 e1 or f3 e2 flashes

in the display (on models withsevensegment display) or the WET indicator flashes F3E1 or F3E2(on models without seven segment display) and the dryer shuts off, the thermistor or wire harness is either open or shorted.

Unplugdryeror disconnect power.



Check wire connections at themachine control



electronics and thermistor. SeeAccessing & Removing theElectronicAssemblies, page 21,and forthermistor location,see figure 10,page 16.

If wire connections are good, remove the two



wires fromthethermistor andreplacethethermistor.

Reassembleall parts and panels.



Plug in dryer or reconnect power.



4. If f3 e1 or f3 e2 does not flash in the display (on modelswith seven segment display) or the WET indicator does not flash F3E1 or F3E2 (on models without seven segment display),the connectionsto the thermistor are good.Therefore, check theexhaust temperature value at any or all of the temperature levels in question, using theTimed Dry cycle,and the following process:

Holda glass bulb thermometer capable of reading from 90° to 180°F (32° to 82°C)in the center of the exhaust outlet.The correct exhaust temperaturesare as follows:

EXHAUST TEMPERATURES

Temperature Heat Turns Off* HeatTurnsOn

Setting °F (°C) °F(°C)

High 155°±5° (68°±3°) 10–15°

Med High 150°±5° (66°±3°) (6–8°)

(Maytag only) below

Medium 140°±5°(60°±3°) the heat

Low 125°±5° (52°±3°) turn off

Extra Low 105°±5° (41°±3°) temperature

* The measured overshoot using the glassbulb

thermometer in the exhaust outlet can be 30°F (17°C) higher.

5. If the exhaust temperature is not within specified limits,remove the P14 connector, then measure the resistance between P14-3 (redwhite wire) and P14-6 (red-white wire)at the connector. See figure 15,page 23 for connector location; and Accessing & Removing the ElectronicAssemblies,page 21.

NOTE: Allthermistorresistance measurements mustbe made while dryeris unpluggedor disconnected from power.

PAGE 17

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

The following tablegivestemperatures and their associated resistance values.

EXHAUST THERMISTOR RESISTANCE

Temp Range Temp Range

°F (°C) kΩ °F (°C) kΩ

50° (10°) 19.0–22.0 80° (27°) 8.5–10.5 60° (16°) 14.8–16.8 90° (32°) 6.8–8.8 70° (21°) 11.5–13.5 100° (38°) 5.0–7.0

If the thermistor resistance does not agree



with table,replace the exhaust thermistor.

If the thermistor resistance checks agree



with the measurements in the table, replace themachine control electronics.

Res. Res.

TEST #3b Thermal Fuse

ELECTRIC DRYER: The thermal fuseis wired in series with the dryerdrive motor.

GAS DRYER:

withthe dryergas valve.

ALL DRYERS:

1. Unplug dryer or disconnect power.

2. Access the thermal fuse by firstremoving

the toe panel. Forthermal fuse location,see figure 10, page 16.

3. Using an ohmmeter, check the continuity across thethermal fuse. Seefigure 10 forlocation.

If the ohmmeter indicates an open circuit,



replace the failed thermalfuse.

The thermal fuse is wired in series

TEST #3c Thermal Cut-Off

If the dryer doesnot produce heat, check the status of the thermal cut-off.

1. Unplug dryer or disconnect power.

2. Access the thermal cut-off by first removing

the toe panel.

3. Using an ohmmeter, check the continuity across the thermal cut-off.See figure 10,page 16,for location.

If the ohmmeter indicates an open circuit,



replace the failed thermalcut-off andhighlimit thermostat. In addition, check forblocked or improper exhaust system,or failed heat element (electric dryer).

TEST #3d Gas Valve, Gas Dryer Only

1. Unplugdryer or disconnect power.

2. Accessthe gas valve by removingthe

toe panel.

3. Use an ohmmeter to determine if a gasvalve coilhas failed.Remove harness plugs. Measure resistance acrossterminals. Readings should match those shown in the following chart. If not, replace coil.

Terminals Resistance (Ω)

1 to 2 1365 ± 25 1 to 3 560 ± 25 4 to 5 1220 ± 50

IMPORTANT: Be sure all harness wires are looped back through the strain relief after checking or replacing coils.

TEST #4 Moisture Sensor

NOTE: This test is started with the dryer completely assembled.

This test is performed when an automatic cycle stops too soon,or runsmuch longerthanexpected.

NOTE: Dryer will shut down automatically after 2-1/2hours.

The following items are part of this system: Harness/connection

Metal sensor strips Machine control electronics.

See ESD information,page 1.

1. Enter ServiceDiagnosticmode and selectthe UserInterface/ControlSystemtest.See procedure on page5.

2. Openthe dryerdoor.Thedryer shouldbeep andan alphanumeric numbershouldbe displayed (onmodelswithseven segment display) or the TEMP indicatorsshould change (on models without seven segmentdisplay).

3. Locatethe two metal sensor strips on the faceof the lintscreenhousing.Bridge thesestrips witha wet cloth or finger.

If a beep tone is heard andan alphanumeric



numberis displayed on theconsole (on models with seven segment display) or theTEMPand STATUS indicators change (on models without seven segment display),the sensor passed thetest. Go to step 9.

If a beep tone is notheard, or a continuous



beep toneis heard before bridgingthe moisture strips, continue with step4.

NOTE: Overdrying may be causedby a short circuit in the sensor system.

PAGE 18

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

4. Unplugdryer or disconnect power.

5. Accessthe moisturesensorwiresby removing

the toe panel. Disconnect the sensorwires from the harness. See figure 11.

Drum

FRONT

MOVs

(Metal Oxide

Varistors)

Blower

Housing

Figure 11. Disconnect sensor from wire harness.

Harness

Connection

6. Accessthe machine controlelectronics.See Accessing & Removing the Electronic Assemblies, page21. Remove connector P13 from the circuit board.Check the main harnessconnections between the sensor harness and machine control for a short or open circuit.

Replace the main harness,if necessary.



If harness is OK,continue with step7.



7. Measure the resistance across the outermost contacts of the cable that includes the two red MOVs.

If a smallresistance is measured,check for



debrisacross moisture stripsinside the drum; clean if debris ispresent.If debris is not present, replace sensor harness.

If a smallresistance is not measured,continue



with step8.

8. Measure the resistance across eachof the outermost contacts and the center terminal (ground connection).

If a resistance lessthaninfinityis measured,



replace the sensor harness.

9. If moisture sensor diagnostictest passes,check the thermistor: PerformTEST #3a,page17.

If the problempersistsafterreplacing the



moisture sensor and thermistor, replace the machine control electronics.

TEST #4a Adjusting Customer-Focused Drying Modes

NOTE: If the customer complains about the clothesbeingconsistently damp on automatic cycles and the moisture sensor passed TEST #4, step3, the total auto dry time can be changed by choosing one of 3 different Customer-Focused drying modes:

1 = standard auto cycle 2 = 15% more drying time 3 = 30% more drying time

1. Be sure the dryer is in standby mode (plugged in with all indicators off,or with only the DONE [on some models] or COMPLETE [onsome models] indicator on).

2. Activate the Customer-Focused Drying Mode by pressing and holdingthe TEMP button for morethan 6 seconds.

3. On modelswith seven segment display, the dryer will beep and cf will be displayed for1 second followed by the currentdrying setting. On models without sevensegment display, the dryer will beepand the current drying mode will be seenon theSTATUS indicators.Thefactory default value is“1”.

4. To selecta different drying mode, press theTEMP buttonagain.On models withseven segment display, the dryer display will flash and show 2, 3, or 1. On modelswithout seven segment display, STATUSindicatorswill indicate the current selected drying mode.

On models without seven segment display:

1 = WET indicator lit constantlyor flashing 2 = WET and DAMP indicators lit constantly

or flashing

3 = WET, DAMP, and COOL DOWN indicators

lit constantlyor flashing

NOTE: On all models, while cycling through the settings, the current setting will not flash, but the other settings will.

PAGE 19

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

5. With the desired dryingmode shown,press the START button to save the drying modeand exitdiagnostics (the START buttonin this mode doesnot start a drying cycle).The result will be stored in EEPROM of the control board, andwill be retainedaftera power loss.

6. Press the POWERbuttonat any time to cancel changes and exit from thismode.

TEST #5 Buttons and Indicators

This test is performed when any of the following situations occurs duringthe Console Buttonsand Indicators Diagnostic Test, page 5:

✔ None of the indicators light up ✔ No beep sound is heard ✔ Some buttons do not light indicators

None of the indicators light up:

1. See Diagnostic Guide/Before Servicing...

on page1.

2. Perform TEST #1,page 12,to verify supply connections.

3. Perform steps in Accessing & Removing the ElectronicAssemblies,page 21,and visually check that the P5 connector is inserted all the way into the machinecontrol electronics.

4. Visually check that the user interface and housing assembly is properly inserted intothe front console.

5. If both visual checks pass,replace the userinterfaceand housing assembly.

6. Reassembleall parts and panels.

7. Plug in dryer or reconnectpower.

8. Activate the Service Diagnostic mode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators testper procedures on page 5.

9. If indicatorsstill do not light, the machine control electronics hasfailed:

Unplugdryeror disconnect power.



Replace the machine control electronics.



Reassembleall parts and panels.



Plug in dryer or reconnect power.



Activate the Service Diagnostic mode per



procedure on page 2. Then activate theUser Interface/Control System test and verify the repair by completing the Buttons andIndicators test per procedureson page5.

No beep sound is heard:

1. Perform steps in Accessing & Removing the

ElectronicAssemblies,page 21,and visually check that the P5 connector is inserted all the way into the machinecontrol electronics.

If visual check passes,replacethe user



interface and housing assembly.

2. Reassemble all parts and panels.

3. Plug in dryer or reconnectpower.

4. Activate the ServiceDiagnosticmode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

5. If replacing the user interface and housing assembly failed:

Unplugdryeror disconnect power.



Replace the machine control electronics.



Reassembleall parts and panels.



Plug in dryer or reconnect power.



Activate the Service Diagnostic modeper



procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

Some buttons do not light indicators:

1. Perform steps in Accessing & Removing the

ElectronicAssemblies,page 21,and visually check that the userinterface and housing assembly is properlyinsertedinto thefrontconsole.

If visual check passes,replacethe user



interface and housing assembly.

2. Reassembleall parts and panels.

3. Plug in dryer or reconnectpower.

4. Activate the Service Diagnostic mode per

procedure on page2. Then activate the User Interface/Control System testand verify the repair by completing the Buttons and Indicators test per procedures on page 5.

TEST #6 Door Switch

Perform steps underActivatingthe Service Diagnostic Mode, page 2,and activate the User Interface/Control System test.Then performthe Door Switch Diagnostic test, page 5. Functionality is verified with a beep eachtime the door is closed andopened,and,on models withseven segment display,an alphanumeric number appears in the display (i.e.,05). On models withoutseven segment display, theTEMPindicators display the Control Software ID along withtheWET or DONE (COMPLETE on some models) indicator illuminating to indicate fuel type.

PAGE 20

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