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TECH SHEET - DO NOT DISCARD

PAGE 9

W10216189A

 

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No beep sound is heard:

1.

Perform steps in Accessing & Removing the

Electronic Assemblies, at right, and visually

check that the P5 connector is inserted all the

way into the machine control electronics.

If visual check passes, replace the console

electronics and housing assembly.

2.

Plug in dryer or reconnect power.

3.

Perform steps under DIAGNOSTIC: Console

Buttons and Indicators, page 1, to verify repair.

4.

If replacing the console electronics and

housing assembly failed:

Unplug dryer or disconnect power.
Replace the machine control electronics.
Plug in dryer or reconnect power.
Perform steps under DIAGNOSTIC: Console

Buttons and Indicators, page 1, to verify

repair.

Some buttons do not light indicators:

1.

Perform steps in Accessing & Removing the

Electronic Assemblies, at right, and visually

check that the console electronics and housing

assembly are properly inserted into the front

console.

If visual check passes, replace the console

electronics and housing assembly.

2.

Plug in dryer or reconnect power.

3.

Perform steps under DIAGNOSTIC: Console

Buttons and Indicators, page 1, to verify repair.

TEST #7

Door Switch

Refer to page 1 and perform steps under

Activating the Diagnostic Test Mode. Then, on the

same page, perform steps under DIAGNOSTIC:

Door Switch. Functionality is verified with a beep

each time the door is closed and opened, and an

alphanumeric number appears in the display.
If any of the preceding conditions are not met:

1.

Unplug dryer or disconnect power.

2.

Check that the wires between the door switch

and machine control electronics are connected.

See figure 13 for switch location, and see

Accessing & Removing the Electronic

Assemblies, at right.

If the connections are OK, replace the wire

and door switch assembly and retest.
If wire and door switch assembly have 

been replaced and dryer still does not start,

replace the machine control electronics.

REMOVING THE TOE PANEL

1.

Unplug dryer or disconnect power.

2.

Remove two screws below the toe panel.

3.

Slide the toe panel down, then pull it out from

the bottom. See figure 14.

ACCESSING & REMOVING THE

ELECTRONIC ASSEMBLIES

There are two electronic assemblies: the Machine

Control Electronics, and the Console Electronics

and Housing. See figure 15.

1.

Unplug dryer or disconnect power.

2.

Remove the two rear screws from the top

panel, and slide the top panel to the rear 

to remove.

Machine Control Electronics

1.

Perform preceding steps 1 and 2, then remove

the two screws that hold the machine control

electronics bracket in place. See figure 16.

2.

Slide the bracket over the top of the drum 

to access the machine control electronics

connectors and mounting screw. See figure 16.

Figure 14.

Pull the toe panel down to clear

flange, then pull panel out.

Machine Control Electronics

Bracket Screws

FRONT

Machine Control

Electronics Mounting Screw

Figure 16.

Remove machine control electronics

from mounting bracket.

Figure 13.

Door switch location.

FRONT

Machine 

Control

Electronics

Console Electronics

and Housing 

Assembly

Figure 15.

Locate the electronic assemblies.

Flange 

Summary of Contents for Maytag NED7500VM0

Page 1: ... off then stay on with displayed Continue with diagnostics 4 If entry into Diagnostic Test Mode is unsuccessful choose a different button except Stop and Cycle Signal and repeat step 2 If no indicators come on after repeating step 2 using a different button go to TEST 1 page 4 DIAGNOSTIC Active Fault Codes If there is an active fault code it will be flashing in the display Review the Display Fault...

Page 2: ... to indicate the air flow range corresponding to the number displayed The More Dry LED will be illuminated for air flow readings above 40 cfm The Normal LED will be illuminated for air flow readings between 29 and 40 cfm The Less Dry LED will be illuminated for air flow readings less than 29 cfm If air flow value is low Less Dry LED is lit check to make sure the lint screen is clean the door seal ...

Page 3: ... ONLY when in the Diagnostic Test Mode See TEST 4a page 7 Motor Drive System Failure F 26 flashes if there is a motor drive system failure See TEST 3 page 5 Moisture Sensor Open F 28 flashes if the moisture sensor strip is open This fault code appears ONLY when in the Diagnostic Test Mode See TEST 5 page 8 Moisture Sensor Shorted F 29 flashes if the moisture sensor strip has shorted This fault cod...

Page 4: ...IAGNOSTIC Console Buttons and Indicators page 1 to verify repair 13 If indicators still do not light perform TEST 2 page 5 GAS DRYER 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 Check that the power cord is firmly connected to the dryer s wire harness See figure 5 4 Access the machine control electronics without disco...

Page 5: ...n Thermal fuse no Belt belt switch Drive motor Centrifugal switch Door switch Machine control electronics See ESD information page 1 1 Unplug dryer or disconnect power 2 Access the machine control electronics and measure the resistance across P8 4 and P9 1 See Accessing Removing the Electronic Assemblies page 9 If resistance across P8 4 and P9 1 is in the range of 1 to 6 Ω replace the machine cont...

Page 6: ... cut off high limit thermostat and heater If connections look good check for continuity across each of these components Replace the heater if it is electrically open Replace both the thermal cut off and inlet thermistor high limit thermostat assembly if either the thermal cut off or the high limit thermostat is electrically open 5 If no open circuit is detected remove the P4 connector then measure...

Page 7: ...rature using an inlet thermistor that is part of the high limit thermostat assembly 1 Activate the Diagnostic Test Mode See procedure on page 1 2 If or is a displayed error in the Diagnostic Test Mode the inlet thermistor or wire harness is either open or shorted Unplug dryer or disconnect power Check wire connections at the machine control electronics and inlet thermistor See Accessing Removing t...

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

Page 9: ... number appears in the display If any of the preceding conditions are not met 1 Unplug dryer or disconnect power 2 Check that the wires between the door switch and machine control electronics are connected See figure 13 for switch location and see Accessing Removing the Electronic Assemblies at right If the connections are OK replace the wire and door switch assembly and retest If wire and door sw...

Page 10: ...r Accessing Removing the Electronic Assemblies page 9 and disconnect the P2 and P5 harnesses from the machine control 4 The console mounting bracket is fastened to the console front panel with two latches at both sides of the console assembly Unlatch the bracket gently with a screwdriver while pulling the mounting bracket assembly out See figure 18 5 The console electronics is split into two assem...

Page 11: ...9828 6020698 6047486 6199300 6446357 6597144 6604298 6685241 6732447 6784673 6819255 D314261 D314262 D457991 D457992 D495453 REMOVING THE BACK PANEL 1 Unplug dryer or disconnect power 2 Remove the two rear screws from the top panel and slide the top panel to the rear to remove 3 Remove the cover plate disconnect the power cord and remove ground screw 4 Remove the metal spring clip between the back...

Page 12: ... 196 F 91 C 4M DRIVE MOTOR 1 3 H P MAIN 3 3 3 6 START 2 7 3 0 SENSOR DOOR NEUTRAL MOTOR MTR CS MOIST MOIST RTN MODEL MODEL RTN OUTLET TEMP OUTLET TEMP RTN MACHINE CONTROL ELECTRONICS Y R P13 1 P13 2 P4 4 P4 5 P4 3 P4 6 R OUTLET THERMISTOR 10 k P9 2 L1 BR L1 LINE BK HEATER V HEATER RTN N O COM BK BK BK R R W NC HIGH LIMIT THERMOSTAT 295 F 146 C THERMAL CUT OFF 352 F 178 C HEATER 7 8 11 8 DRUM LAMP ...

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