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TECH SHEET - DO NOT DISCARD

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W10216189A

 

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DISPLAY FAULT/ERROR CODES

The fault codes below would be indicated when attempting to start a

drying cycle, or after activating the Diagnostic Test Mode.

Display

Description

Explanation / Recommended Procedure

Power

Failure

PF

flashes to indicate that a power failure

occurred while the dryer was running.

Press Start to continue the cycle, or

press Stop to clear the display.

Low Line

Voltage

L2

flashes if low line voltage (less than

30 V) is detected at installation.

Check to see if a household fuse has

blown or a circuit breaker has tripped.
Confirm the power cord is properly installed

and plugged into the power outlet.
Check the relay connections on the

machine control electronics.
Gas Models Only: Check the P14

connection on the machine control

electronics.

AF

Low Air Flow

Condition

AF

flashes if low inlet air flow is detected

at installation.

Check to see if the vent run from the

dryer to the wall is crushed.
Perform steps under DIAGNOSTIC:

Displaying Inlet Air Flow, page 2.

Primary Control

Failure

F:01

flashes when there is a primary

control failure.

Replace the machine control electronics.

See Accessing & Removing the

Electronic Assemblies, page 9.

Keypad/

User Interface

Failure

F:02

flashes when there is a stuck button

or user interface mismatch. This fault code

appears ONLY when in the Diagnostic Test

Mode.

See TEST #6, page 8.

Heater Failure

F:20

flashes if no voltage is detected at the

heater relay. This fault code appears ONLY

when in the Diagnostic Test Mode.

Check that the wires are plugged in on

the heater assembly and at the relay on

the electronic control.

Outlet

Thermistor

Open

F:22

flashes if the outlet thermistor is open.

See TEST #4a, page 7.

Outlet

Thermistor

Shorted

F:23

flashes if the outlet thermistor has

shorted.

See TEST #4a, page 7.

Inlet

Thermistor

Open

F:24

flashes if the inlet thermistor is open.

This fault code appears ONLY when in the

Diagnostic Test Mode.

See TEST #4a, page 7.

Inlet

Thermistor

Shorted

F:25

flashes if the inlet thermistor is

shorted. This fault code appears 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 code appears ONLY

when in the Diagnostic Test Mode.

See TEST #5, page 8.

Moisture Sensor

Strips

Heater

Assembly

Door

Switch

See Accessing & Removing the Electronic

Assemblies, page 9, to access:

See Removing the Back

Panel, page 11, to access:

See Removing

the Toe Panel,

page 9, to access:

Machine Control Electronics
Console Electronics and Housing

Drum Light Assembly

Blower Motor Assembly

Moisture Sensors

Outlet Thermistor

Thermal Cut-off

Inlet Thermistor/High Limit

Thermostat Assembly (Electric Models)

High Limit Thermostat (Gas Models)
Heater Assembly (Electric or Gas)

Thermal Fuse

Figure 2.

Component locations.

Display

Description

Explanation / Recommended Procedure

Restricted

Air Flow

Condition

F:30

flashes if a restricted air flow condition exists. This fault

code appears ONLY when in the Diagnostic Test Mode.

Check to make sure the lint screen is clean, the door seal 

is in place, and the vent is not obstructed.
See DIAGNOSTIC: Displaying Inlet Air Flow, page 2.

L2

Line Voltage

Error

F:31

flashes if a low voltage condition (less than 30 V) has

been detected. This fault code appears ONLY when in the

Diagnostic Test Mode.

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

breaker has tripped.
Confirm the power cord is properly installed and plugged

into the power outlet.
Check the relay connections on the electronic control.

No

Communication

Between

Electronic

Assemblies

F:70

/

F:71

flashes when there is no communication between

the machine control and the console electronics.

Check console electronics harness connections to the

machine control.
Replace the machine control electronics. See Accessing &

Removing the Electronic Assemblies, page 9.

through

Console

Electronics

Failure

F:72

through

F:78

flashes when there is a console electronics

failure.

Replace the console electronics. See Accessing &

Removing the Electronic Assemblies, page 9.

PF

L

2

F

:01

F

:02

F

:20

F

:22

F

:23

F

:24

F

:25

F

:26

F

:28

F

:29

F

:30

F

:31

F

:70

F

:71

F

:72

F

:78

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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