Whirlpool GEW9250 Electric Dryer - C:\Documents and Settings\Thom\Desktop\Tech%20Sheet%20
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1. E3 error code is displayed If the E3 error code is displayed there is a user interface or software mismatch It is also possible that a component on the console electronics or the machine control electronics has failed Check button functioning before replacing the machine control electronics See box above TEST 6 Door Switch Test Go into the diagnostic test mode See page 1 Functionality is verified with a beep each time the door is closed and opened and an alpha numeric code appears in the display 0E 0g 1E or 2E etc gt If any of the above conditions are not met or if one of the dryer model codes listed above is displayed when the door is closed check that the wires between the door switch and machine control electronics are connected See figure 10 page 7 for switch location and see Accessing amp Removing the Electronic Assemblies page 7 SSS FOR SERVICE TECHNICIAN S USE ONLY PART NO 8558722 REV A TECH SHEET DO NOT DISCARD See Accessing amp Removing the FRONT Electronic Assemblies to access m Console Electronics and Housing See Removing the m Machine Control Back Panel to access Electronics m Blower Motor Assembly m Drum Light Door Switch Assembly TOP OF DRUM Door Switch Figure 10 Door switch location gt If the connections are OK replace the wire and door switch assembly and retest gt If wire and door assembly have b2. Turns off all LEDs and exits diagnostic mode This button controls the right digit Button controls LED above button High Medium low Louder Extra Low Softer Button controls all LEDs above button Button controls all LEDs above button TROUBLESHOOTING TESTS NOTE These checks are done with the dryer unplugged or disconnected from power TEST 1 Supply Connections This test assumes that proper voltage is present at the outlet and visual inspection indicates that the power cord is securely fastened to the terminal block 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 Remove Screw so A Figure 2 Remove the cover plate Terminal Block Cover 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 3 Power Cord Terminal Block Figure 3 Plug to terminal connections gt If there is no continuity replace the power cord and test the dryer gt 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 3 gt When this is found go to step 5 gt If neither of
3. assembly See figure 15 Machine Control Electronics Assembly gt og Figure 15 Remove assembly from mounting position FOR SERVICE TECHNICIAN S USE ONLY PART NO 8558722 REV A PAGE 8 TECH SHEET DO NOT DISCARD 2 As you remove the assembly from its mounting position rotate the assembly up to access the machine control circuit board and set it on the side panel See figure 16 2 Remove the screws that fasten the console mounting bracket onto the assembly Lift up and remove the bracket to locate the electronics assembly See figure 18 Machine Control Electronics Assembly Figure 16 Rotate assembly up to access the machine control circuit board 3 Remove all the wire connections to the machine control board See figure 12 page 7 4 Remove the console mounting screw located near the transformer 5 Press a side end of the machine control electronics to release the mounting tabs at that end then lift that end away from the bracket Repeat to release the other side end Console Electronics and Housing 1 Perform steps 1 and 2 under Accessing amp Removing the Electronic Assemblies page 7 then disconnect the ribbon cables that run between the console and the machine control board Make the disconnection at the machine control side Remove the two screws that fasten the console assembly to dryer then remove the console assembly sliding it up and off fro
4. Harness connection Heater relay Thermal cut off High limit thermostat age 1 Heat element _ a l assembly Sore electronics Centrifugal switch Dryer does not heat 1 Unplug dryer or disconnect power 2 Remove the toe panel to access the thermal components See figure 11 page 7 Locate the components using figure 8 Heater Element gt Lf J 9 SS ee High Limit Thermostat Thermal Cut Off SE Thermal Fuse ie Thermistor Figure 8 Thermal Components viewed from front 3 Using an ohmmeter and referring to the wiring diagram measure the resistance from the red wire at the thermal cutoff to the red wire at the heater gt Ifthe resistance is about 10 ohms go to step 5 gt If an open circuit is detected go to step 4 4 Visually check the wire connections to the thermal cutoff high limit thermostat and heater If connections look good check for continuity across each of these components Replace the one that is electrically open 5 If no open circuit is detected measure the resistance between P2 5 red white wire and P2 6 black wire at the machine control board gt If 6 7 k ohms are measured replace the machine control electronics gt Ifthe resistance is less than 1 k ohm replace the thermistor Heat will not shut off 1 Unplug dryer or disconnect power 2 Access the machine control electronics and measure the resistance between
5. back panel s top edge which connect the back panel to the side panels top edges See figure 22 5 Disconnect the power cord from the terminal block then remove the terminal block from the back panel Ground Screw Location Cover Plate VA fx i WSN e af Figure 22 Remove 13 screws PART NO 8558722 REV A FOR SERVICE TECHNICIAN S USE ONLY 10 05
6. sure the dryer is in standby mode plugged in and all indicators off 2 Press the following button sequence More Time gt Less Time gt More Time gt Less Time all within 5 seconds 3 All indicators on the console are illuminated with 88 showing in the Estimated Time Remaining two digit display if this test mode has been entered successfully PAGE 1 IMPORTANT Electrostatic Discharge ESD Sensitive Electronics ESD problems are present everywhere ESD may damage or weaken the electronic control assembly The new control assembly may appear to work well after repair is finished but failure may occur at a later date due to ESD stress E Use an anti static wrist strap Connect wrist strap to green ground connection point or unpainted metal in the appliance 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 failed electronic control assembly in anti static bag observe above instructions If unsuccessful entry into diagnostic mode actions can be taken for specific indications Indication 1 None of the indicators or display turns on Action Select any manual cycle If indicators com
7. OF BUTTONS Before replacing the machine control electronics check for proper button function as follows HM Unplug dryer or disconnect power HM Disconnect the ribbon cables at P3 and P4 on the machine control electronics See figure 12 on page 7 for connector locations The table at right show the pin locations of P3 and P4 connectors one side at the board and the other side at the end of the ribbon cable Insert meter leads into the DISCONNECTED ribbon cable side at the pin locations indicated in the table Press the associated button and measure resistance NOTE The meter must be connected with the proper polarity For most analog meters the connection polarity is opposite that of digital meters BUTTON ANALOG METER LEAD LEAD LEAD LEAD P3 12 P3 8 DIGITAL METER Temperature Wrinkle Shield P3 12 P3 8 P3 13 P3 8 P3 13 P3 8 P3 14 P3 7 Less Time Auto Dry Level More Time P3 14 P3 7 P3 13 P3 7 P3 13 P3 7 P3 12 P3 7 End Of Cycle Signal P3 12 P4 2 P3 14 P4 2 P3 12 P3 7 P3 12 P4 2 Control On Start Pause Cancel P3 14 P4 2 P3 13 P4 2 P3 13 P4 2 gt If using a digital meter the resistance reading should go from infinity down to about 1 3 5 MQ megohms If available you could use the diode test function of a digital meter which will give a voltage of about 5 1 5 VDC during the test gt If using an analog meter the resistance reading should go from infini
8. P2 5 red white wire and P2 6 black wire See Accessing amp Removing the Electronic Assemblies page 7 gt lf 6 7 k ohms are measured replace the machine control electronics gt Ifthe resistance is much greater than 7 k ohms replace the thermistor TEST 3a Thermistor Test The machine control electronics monitors the exhaust temperature using the thermistor and cycles the heater relay on and off to maintain the desired temperature Begin with an empty dryer and a clean lint screen 1 Plug in dryer or reconnect power 2 Set the following configuration gt Door must be firmly closed gt Press Control On gt Press End Of Cycle Signal Louder gt Press Start 3 If after 60 seconds E1 or E2 flashes in the display and the dryer shuts off the thermistor or wire harness is either shorted or open gt Unplug dryer or disconnect power gt Check wire connections at the machine control electronics and thermistor See Accessing amp Removing the Electronic Assemblies page 7 and figure 8 for thermistor location gt If wire connections are good remove the two wires from the thermistor and replace the thermistor See figure 8 gt Plug in dryer or reconnect power 4 If E1 or E2 does not flash in the display the connections to the thermistor are good Therefore check the thermistor s resistance value at any or all of the temperature levels in question using the Timed Dry cycle and the follow
9. TECH SHEET DO NOT DISCARD AWARNING Electrical Shock Hazard Disconnect power before servicing Replace all parts and panels before operating Failure to do so can result in death or electrical shock DIAGNOSTIC GUIDE Before servicing check the following E Make sure there is power at the wall outlet HM Has a household fuse blown or circuit breaker tripped Time delay fuse ls 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 ohms per volt DC or greater H Check all connections before replacing components Look for broken or loose wires failed terminals or wires not pressed into connectors far enough HA potential cause of a control not functioning is corrosion on connections Observe connections and check for continuity with an ohmmeter H Connectors Look at top of connector Check for broken or loose wires Check for wires not pressed into connector far enough to engage metal barbs HM Resistance checks must be made with dryer unplugged or power disconnected DIAGNOSTIC TESTS These tests allow factory or service personnel to test and verify all inputs to the machine control electronics One may want to do a quick and overall checkup of the dryer with these tests before going to specific troubleshooting tests ACTIVATING THE DIAGNOSTIC TEST MODE 1 Be
10. VOLTS Jso_ i _ _ 120 VOLTS W NEUTRAL O NEUTRAL BK DL BR TERMINAL LINKED TO DRUM LAMP oo CABINET i w o a oo SWITCH NEUTRAL P1 2 NEUTRAL Ww USER INTERFACE MOTOR O O O ACTIVE OVERLAY eer OIG x me a ah or 40 F 91 5M 2M ALTERNATE TECHNOLOGY em CENTRIFUGAL SWITCH OO UO gt a MOIST BE G Y SWITCH 0 250 TERMINAL COM HEATER RTN TEMP TEMP RTN 0 250 TERMINAL N C OP2 7 ELECTRONIC CONTROL THERMAL CUT OFF TCO 352 F 178 C TROUBLESHOOTING GUIDE Some tests will require accessing components See figure 13 page 7 for component locations O O O j P2 6 BK 10k Q 3 HIGH LIMIT THERMOSTAT HEATER 295 F 146 C 78 118 Q Drum Size Drum Speed 7 0 cubic feet 51 5 3 RPM CW 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 Control On button is pressed on Supply Connections See TEST 1 page 3 Check harness connections Control Electronics and housing See TEST 5 page 6 En WON T START CYCLE WHEN START BUTTON IS PRESSED ow Pm If number display flashes check to be sure the door is completely shut and press and hold down Start for about 1 second See TEST 2 page 3 See TEST 6 page 6 WON T SHUT OFF WHEN EXPECTED 2 Moisture Sensor See TEST 4 p
11. age 5 CONTROL WON T ACCEPT SELECTIONS 1 WON T HEAT 2 3 Check Pause Cancel button See TEST 5 page 6 Control electronics and housing See TEST 5 page 6 Console electronics and housing See TEST 5 page 6 Heater See TEST 3 page 4 Check harness connections Check installation HEATS IN AIR CYCLE Thermistor See TEST 3a page 4 SHUTS OFF BEFORE 1 CLOTHES ARE DRY 2 Moisture sensor See TEST 4 page 5 Dryness level adjust See TEST 4a page 5 Contacts imam fam sm eml Function Contacts closed Centrifugal Switch Motor Blue White reen fellow 7A pone ed O Red N SY Pluggable Drive Motor Switch MOIST RTN O cae DRIVE MOTOR ae a ae ENSOR 1 3 H P ene MODEL 0 P2 3 L J Movs RELAY MODEL RTN OP2 4 N O Oo HEATER V P25 RW THERMISTOR PART NO 8558722 REV A FOR SERVICE TECHNICIAN S USE ONLY TECH SHEET DO NOT DISCARD PAGE 3 Status Sensing Control On Heavy Duty Wet Start button controls these LEDs Damp Cool Down Cycle Complete Wrinkle Shield Control Locked Control On button controls this LED controls all LEDs above button Figure 1 Console Diagnostics Controls Status LEDs and turns on dryer Estimated Time Remaips Cycle selector controls LED where pointing
12. ce it TEST 3c Thermal Cut Off Test If the dryer does not 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 See Removing the Toe Panel page 7 3 Using an ohmmeter check the continuity across the thermal cut off See figure 8 page 4 for location gt Ifthe ohmmeter indicates an open circuit replace the failed thermal cut off and high limit thermostat In addition check for failed heat element or blocked or improper exhaust system TEST 4 Moisture Sensor Test NOTE This test is started with the machine completely assembled This test is performed when an automatic cycle stops too soon or runs much longer than expected NOTE Dryer will shut down automatically after 2 2 hours The following items are part of this system Harness connection Metal sensor strips Machine control electronics 1 Enter the diagnostic test mode See procedure on page 1 2 Open the dryer door If a beep tone is heard and a software revision number is displayed on the console as soon as the door is opened a short circuit exists in the moisture sensor system gt If this doesn t happen go to step 3 gt Otherwise go to step 4 NOTE Over drying may be caused by a short circuit in the sensor system 3 Locate the two metal sensor strips on the face of the lint screen housing Bridge these strips wit
13. ctions of Buttons and Rotary Cycle Selector in box above gt If this test passes replace the machine control electronics gt Otherwise replace the console electronics and housing DIGITAL METER LEAD ON P1 14 P1 11 P1 10 P1 9 CYCLE SELECTION Heavy Duty Timed Dry Touch Up Quick Dry ANALOG METER LEAD ON P1 14 10 20 KQ 10 20 KQ Delicate 10 20 kQ o0 10 20 kQ Casual 10 20 KQ 10 20 kQ 10 20 kQ Bulky 10 20 kQ Normal A particular group of LEDs does not light up A group or combination of LEDs share a common electronic connection If this connection is open all of the LEDs in the group will be disabled Replace the console electronics and housing A single LED does not light up Press the button or manipulate the dial associated with the LED several times If the LED does not light up the LED has failed Replace the console electronics and housing No beep sound is heard If the associated LEDs do light up it is possible that the beeper circuit has failed Check button functioning before replacing the machine control electronics See box above No dryer function is activated when a particular button is pressed If the associated LEDs do light up it is possible that the machine control electronics has failed Check button functioning before replacing the machine control electronics See box above 0 30 40 kQ o0 o0 o0 o0 10 20 kQ
14. e on then try to change the dryer time by pressing the More Time and Less Time buttons If either button fails to change the time something is faulty with one of those buttons and it is not possible to enter the diagnostic mode Remove the console electronics and housing See Accessing amp Removing the Electronic Assemblies page 7 If no indicators come on after selecting the manual cycle go to TEST 1 page 3 Indication 2 E1 or E2 flashes from the display Action Proceed to TEST 3a page 4 Indication 3 E3 flashes from the display Action Check that the correct machine control electronics and console electronics and housing are installed Do so by removing these components to view the part numbers and compare them to the part DISPLAY FAULT ERROR CODES numbers in the Service Parts List for this unit See Accessing amp Removing the Electronic Assemblies page 7 Replace components if necessary Diagnostic Console switches and indicators Pressing each button or turning the cycle selector to each cycle should cause a beep tone and control one or more LEDs as shown in figure 1 page 3 Pressing the Start button will also control the motor and heater while the two digit display will indicate a software project i d number Diagnostic Moisture Sensor Locate two metal strips on the face of the lint screen housing Bridge these strips with a wet cloth or a finger If a beep is heard and a software revision n
15. een replaced and dryer still does not start then replace the machine control electronics REMOVING THE TOE PANEL 1 Unplug dryer or disconnect power Va Heater Assembly 2 Remove two screws below the toe panel 3 Slide the toe panel down then pull it out from the bottom See figure 11 See Removing the Toe Panel to access m Moisture Sensors m Thermistor Moisture Sensor m Thermal Cut off Strips m Thermostat m Heater Assembly Figure 13 Component locations Figure 11 Pull the toe panel down to clear flanges then pull panel out White Blue Light Blue Open Black Yellow Red R Black i Motor Relay H R Red White Mounting Tab Console Mounting Screw Dat Cote V000 TAU PIN XXXXXXX Rev X Figure 12 Machine control electronics PAGE 7 ACCESSING amp REMOVING THE ELECTRONIC ASSEMBLIES 1 Unplug dryer or disconnect power 2 Remove the top panel to access two electronic assemblies the console electronics and housing and the machine control electronics See figure 14 Console Electronics Machine Control Pe and Housing inside Electronics Assembly FRONT Figure 14 Locate the electronic assemblies Machine Control Electronics 1 Perform steps 1 and 2 above then remove the three screws that hold the machine control bracket in place and remove
16. h a wet cloth or finger gt Ifa beep tone is heard and a software revision number is displayed on the console the sensor passes the test Go to step 4 gt If not unplug dryer or disconnect power gt Access the moisture sensor wires by removing the toe panel figure 11 page 7 and disconnecting the sensor wires from the harness figure 9 Go to step 8 x Drum Figure 9 Disconnect sensor from wire harness PAGE 5 4 Unplug dryer or disconnect power 5 Access the machine control electronics Remove the connector P2 from the circuit board Measure the resistance across terminals 1 yellow red wire and 2 black wire gt If the ohmmeter does not indicate infinity open circuit go to step 6 gt Otherwise measure the resistance across between pins 1 and 2 of connector P2 on the machine control board If a resistance less than 1 MQ is measured with analog or digital ohmmeter inspect the control board for any debris bridging these pins If no debris replace the machine control electronics 6 Access the moisture sensor by removing the toe panel See Removing the Toe Panel page 7 Disconnect the sensor from the wire harness See figure 9 7 Measure the resistance across the outermost contacts of the cable that includes the two red MOVs gt f a small resistance is measured replace this component wire harness moisture sensor gt Otherwise go to step 8 8 Measure the res
17. ing process Hold a 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 temperatures are as follows PART NO 8558722 REV A FOR SERVICE TECHNICIAN S USE ONLY TECH SHEET DO NOT DISCARD EXHAUST TEMPERATURES HEAT TURNS HEAT TURNS N TEMP SETTING 10 15 6 8 below the heat turn off temperature Medium Extra Low 5 If the exhaust temperature is not within specified limits check the resistance of the thermistor NOTE All thermistor resistance measurements must be made while dryer is unplugged or disconnected from power The following table gives temperatures and ranges for their associated resistance values THERMISTOR RESISTANCE 50 10 60 16 70 21 19 0 22 0 14 8 16 8 11 5 13 5 80 27 90 32 100 38 gt Ifthe thermistor resistance does not agree with table replace the thermistor gt Ifthe thermistor resistance checks agree with the measurements in the table replace the machine control electronics TEST 3b Thermal Fuse Test 1 Unplug dryer or disconnect power 2 Access the thermal fuse by first removing the toe panel See Removing the Toe Panel page 7 and figure 8 page 4 for thermal fuse location gt The thermal fuse is wired in series with the dryer drive motor If the thermal fuse is open repla
18. istance across the pins of the mating connector If a small resistance is measured here replace this harness digital wire harness OOO t 9 Measure the resistance across each of the outermost gg contacts and the center Iel terminal ground connection gt Ifa resistance less than infinity is measured replace this component wire harness moisture sensor 10 If moisture sensor diagnostic test passes check the thermistor Perform TEST 3a page 4 gt Ifthe problem persists after replacing the moisture sensor and thermistor replace the machine control electronics TEST 4a Dryness Level Adjust NOTE If the customer is complaining about the clothes being damp and the moisture sensor passes TEST 4 step 3 then the total dry time can be lengthened by changing from a Lo or short auto cycle to a Hi or longer auto cycle 1 Refer to the Diagnostic Tests page 1 and activate the diagnostic test mode 2 In diagnostic test mode press and hold the Dryness Level key for 5 seconds The dryer will beep and the current auto cycle mode will be seen on the display The factory default setting is Lo 3 To select a different auto cycle mode press the Dryness Level key again The dryer display will flash and show either Hi or Lo FOR SERVICE TECHNICIAN S USE ONLY PART NO 8558722 REV A PAGE 6 TECH SHEET DO NOT DISCARD CHECKING FUNCTIONS OF BUTTONS AND ROTARY CYCLE SELECTOR CHECKING FUNCTIONS
19. m the front of the machine See figure 17 Ribbon Cable Connection Point Ribbon Cable Figure 17 Rotate assembly up to access the console electronics Console Mounting Bracket Console Electronics and Housing Assembly Figure 18 Remove mounting bracket and locate electronics assembly 3 The console electronics and housing assembly is held to the decorative piece by seven plastic latches See figure 19 Figure 19 Locate seven plastic latches 4 Unlatch them gently with a screwdriver while pulling the electronics housing assembly out See figure 20 Figure 20 Unlatch gently with screwdriver SOFTWARE COPYRIGHTED MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U S PATENTS 4669200 4989347 6446357 D314261 4700495 5066050 6597144 D314262 4754556 5560120 6604298 D457991 4840285 5809828 6685241 D457992 4865366 6020698 6732447 D495453 4899464 6047486 6784673 4908959 6199300 6819255 5 Gently pull the console electronics housing away from the decorative piece See figure 21 Console electronics 4 and housing Decorative piece Figure 21 Gently pull console housing away from decorative piece REMOVING THE BACK PANEL 1 Unplug dryer or disconnect power 2 After removing the top panel remove the cover plate 3 Remove ten screws plus the ground wire and ground screw from the back panel 4 Remove two screws on the
20. re points gt Ifthe resistance at the motor is correct then there is an open circuit between the motor and machine control electronics Check for failed belt switch gt Ifthe Start winding resistance is much greater than 4 ohms replace the motor 8 Check the belt switch by measuring resistance between the two blue wires as shown in figure 7 while pushing up the belt switch pulley Belt Switch Belt Switch Pulley Figure 7 Checking the belt switch gt Ifthe resistance reading goes from infinity to a few ohms as pulley arm closes the switch belt switch is OK If not replace the belt switch gt If belt switch is OK and there is still an open circuit check and repair the wiring harness 9 Door switch problems can be uncovered in the Diagnostic Tests page 1 however if this was not done the following can be done without applying power to the dryer Connect an ohmmeter across P1 2 neutral white wire and P1 3 door blue wire With the door properly closed the ohmmeter should indicate a closed circuit 0 2 ohms If not replace the door switch assembly TEST 3 Heater Test This test is performed when either of the following situations occur Vv Dryer doesn t heat V Heat won t shut off This test checks the components making up the heating circuit The following items are part of this system Thermistor Machine control electronics See ESD information
21. the plug terminals have continuity with the left most contact of the terminal block replace the power cord and test the dryer 5 Access the machine control electronics without disconnecting any wiring to the control board See figure 15 page 7 6 With an ohmmeter check for continuity between the L1 terminal of the plug found in step 4 and P1 5 black wire on the machine control board gt If there is continuity go to step 7 gt 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 P1 2 white wire at the control board gt If there is continuity go to step 8 gt If there is no continuity and the mechanical connections of the wire are secure replace the main wire harness 8 If the dryer still does not operate replace the machine control electronics See Removing the Machine Control Electronics page 7 TEST 2 Motor Circuit Test This test will check the wiring to the motor and the motor itself The following items are part of this system Door switch Machine control electronics See ESD information page 1 Harness connection Thermal fuse Belt belt switch Motor 1 Unplug dryer or disconnect power 2 Access the machine control electronics and measure the resistance across P1 3 and P1 4 See Accessing amp Remo
22. ty open circuit to less than 40 KQ If not reverse the polarities of the meter connection and measure the resistance again If the reading is less than 40 KQ the circuit is OK and one should continue the remainder of the resistance checks with the connections reversed from that indicated in the table CHECKING THE ROTARY CYCLE SELECTOR One meter lead is always connected to P1 14 gt With a digital meter the lead is on P1 14 gt With an analog meter the lead is on P1 14 Using the table at right check the resistance at each cycle setting while the other lead of the meter is connected to P1 11 P1 10 P1 9 or P1 8 4 With the display flashing the selected auto cycle mode press the Start key to save the setting and exit diagnostics the Start key in this mode does not start a drying cycle The result will be stored in EEPROM of the control board 5 Press the Pause Cancel key at any time to cancel changes and exit from this mode TEST 5 Button and LED Test Refer to the Diagnostic Test page 1 and activate the diagnostic test mode Check for the following situations None of the LEDs light up 1 See Diagnostic Guide Before servicing on page 1 2 Visually check that connectors P3 and P4 are inserted all the way into the machine control electronics See Accessing amp Removing the Electronic Assemblies page 7 If these connections are good perform the checks described in Checking Fun
23. umber is displayed on the console the sensor is OK If not or if a beep tone is heard before bridging the moisture strips go to TEST 4 step 2 page 5 Diagnostic Door Switch Opening the door should cause a beep tone and a number and letter to be indicated in the two digit display Closing the door firmly should cause a beep tone and the display to go blank or indicate 88 The error codes below would be indicated when attempting to start a drying cycle or after activating the diagnostic test mode DISPLAY DESCRIPTION EXPLANATION AND RECOMMENDED PROCEDURE PF flashes to indicate that a power failure occurred while the dryer was PF POWER FAILURE running Press Start to continue the cycle or press Pause Cancel to clear the display El THERMISTOR OPEN E1 flashes if the thermistor is open See TEST 3a page 4 Ee THERMISTOR SHORTED E2 flashes if the thermistor has shorted See TEST 3a page 4 E USER INTERFACE OR SOFTWARE MISMATCH E3 flashes when there is a keyswitch or software mismatch This error code will ONLY appear when in the diagnostic test mode See TEST 5 page 6 FOR SERVICE TECHNICIAN S USE ONLY PART NO 8558722 REV A PAGE 2 TECH SHEET DO NOT DISCARD ELECTRIC DRYER WIRING DIAGRAM IMPORTANT Electrostatic static electricity discharge may cause damage to electronic control assemblies See page 1 for details L1 LINE BK R LINE L2 oj Ss 240
24. ving the Electronic Assemblies page 7 gt If resistance across P1 3 and P1 4 is in the range of 1 to 6 ohms replace the machine control electronics gt Otherwise go to step 3 3 Check the wiring and components in the path between these measurement points by referring to the wiring diagram on page 2 4 Check the thermal fuse See TEST 3b page 5 5 Check the belt switch and motor Access the belt switch and motor by removing the back panel See Removing the Back Panel page 8 Slowly remove the drum belt from the spring loaded belt switch pulley gently letting the belt switch pulley down See figure 4 Figure 4 Slowly remove drum belt 6 Remove the white connector from the drive motor switch See figure 5 Drive Motor Switch White Connector Figure 5 Remove white connector FOR SERVICE TECHNICIAN S USE ONLY PART NO 8558722 REV A PAGE 4 TECH SHEET DO NOT DISCARD 7 Using figure 6 check for the resistance values of the motor s Main and Start winding coils as shown below NOTE Main and Start winding coils must be checked at the motor CONTACT POINTS OF MEASUREMENT WINDING eats Blue wire in back and white orange wire Blue wire in back and START 2 4 3 8 violet wire Main Winding Blue Wire in Back and White Orange Wire A Start f Winding Q Blue Wire U l in Back and Ye Violet Wire SS Y Figure 6 Main and start winding measu
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