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Troubleshooting Procedures 

 

!

WARNING

 

To avoid risk of electrical shock, personal injury, or death, disconnect power to dryer before servicing, unless 
testing requires power. 
 

16026881  

September 

2006 

RPL 16026540 

 

©2006 Maytag Services 

4

 

LED/Switch Check 

While in

 

Service

 

Mode, pressing the

 Chime

 and 

Wrinkle Prevent 

keys for 3 seconds, will start a 

LED/Switch Test. To exit the test at any point, press 
the same keys again for 3 seconds or press the 

OFF

 

key to exit Service Mode. 
 
 
Perform the check by pressing the keys which toggle 
the LED’s on and off. 
 
All switch pads must be pressed within 5 minutes for 
this test to pass. 

PA

 will be displayed for five (5) 

seconds once all switch pads have been pressed and 
this test is completed. Following 10 seconds of 
inactivity at any point, the test will exit without any 
display. The 

Power Off

 

switch pad must be pressed 

twice within thirty (30) seconds to cancel this test. 
 

Switch Action 

Wrinkle Prevent  Press once 
Chime Press 

once 

Adjust Time 

Press once 

Time 

Press four times 

Temperature Press 

twice 

Dryness Level 

Press twice 

Selector Knob 

Rotate 1 position 

Start Pause 

Press once 

Off Press 

once 

 

Diagnostic Codes 

The Diagnostic Codes are identified when the severity 
level of the abnormality detected is higher and service 
may be required. 
 
When a problem with the dryer is detected a 
Diagnostic Code is assigned, and can be displayed. 
The Control Board will not log multiple same codes 
per cycle; however, it will log as many Diagnostics as 
possible for the machine to continue running.

 

 

Access Diagnostic Codes by entering the Service 
Mode and pressing 

Wrinkle Prevent

.

 

d

 

will be 

displayed.

 

 

 
Rotate the Cycle Selector Knob in either direction to 
step through the list of codes one code at a time. 
Once an initial direction is selected by the user (either 
Clockwise or Counterclockwise), subsequent 
movements of the knob in the same direction will 
show older codes. If the user changes direction and 

turns the knob in the opposite direction, the more 
recent code will be displayed.  
 
While a diagnostic code is displayed, if the 

Start/Pause

 button in the center of the Rotary Cycle 

Selector is pressed and held, the machine will display 
the number of cycles ago the diagnostic code 
occurred. When the 

Start/Pause

 button is released, 

the diagnostic code is again displayed

 

Clearing Diagnostic Codes 

To clear the diagnostic code list press the 

Sensor Dry 

Level

 and 

Time

 keypads together for 3 seconds while 

viewing the list. The cycle count for each diagnostic 
code will be reset to 0, but not the machine cycle 
count. 

 
Diagnostic Codes

 

 

Code Description  Trigger 

Action 

Taken 

Dryer 
Thermistor 
Short Sensed 

The 
Thermistor 
resistance is 
very low. 

Check for:   

-

 Clogged 

lint 

screen. 

-

 Restricted 

vent 

system.

 

-

 Check 

Thermistor 

resistance. 

Thermistor 
Open Sensed  

The 
Thermistor 
resistance is 
very high 

Check for:  

-

 Low 

ambient 

temperature in 
room (Below 

50

º

F/10

º

C). 

-

 Outside 

vent 

damper is stuck 
open in wintertime. 

-

  Loose or open 

wire terminals. 

-

 Check 

Thermistor 

resistance. 

Door Circuit 
Failure 

Invalid state 
for more 
than 256 
milliseconds

 

Check for: 

-

  Loose or open 

wire terminals in 
Door Sense 
circuit. 

Possible motor 
transistor error 

If either 
motor 
transistor is 
seen open or 
shorted 
during 
startup 

Check for: 

-

 Loose 

connections 

in motor circuit. 

-

 Run 

System 

Check Mode and 
check the motor 
relay function. 

-

  If relay functions, 

disregard the            
diagnostic code. 

-

  If relay does not 

function, replace 
machine control 
board. 

 

Summary of Contents for , MDG6700A Series

Page 1: ...ized technician for servicing or repair of this unit Refer to Service Manual 16026446 for detailed installation operating testing troubleshooting and disassembly instructions CAUTION All safety information must be followed as provided in Service Manual 16026446 WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires powe...

Page 2: ...ase Incorrect wiring or wire shorted to ground Drive motor winding shorting to ground Will Not Dry Will not heat motor runs Open heating element Hi Limit trips easily or is open Regulating thermostat trips easily or is open Membrane switch open Check Thermistor Will Not Dry Gas Models Poor Gas Ignition When the dryer is operated on a heat setting the igniter should be energized and burner shall fi...

Page 3: ...hime and Temperature Keys for 3 seconds or until 3 beeps are heard The machine will now be in Service Mode Upon entry into Service Mode the Sensor Bar Touch Data is to be displayed Exit Service Mode Press the OFF key to exit Service Mode or repeat the Chime and Temperature sequence Diagnostic Tests The following table lists the various tests available while in the Service Mode Before advancing to ...

Page 4: ...l be displayed Rotate the Cycle Selector Knob in either direction to step through the list of codes one code at a time Once an initial direction is selected by the user either Clockwise or Counterclockwise subsequent movements of the knob in the same direction will show older codes If the user changes direction and turns the knob in the opposite direction the more recent code will be displayed Whi...

Page 5: ...e Check for diagnostic code 1 do Door Open Running the dryer with door open Check for Close the door and run the dryer Loose or open wire terminals in Door Sense circuit Check for diagnostic code 3 FE Power source frequency Error Invalid power source frequency Check for Not using regular power source frequency Invalid power frequency sense circuit dC Door Circuit Failure Invalid state for more tha...

Page 6: ...ut off 127 99 C 25A HI limit 240V 5300W Heating Element Electric Measure resistance of the following terminal 1 Door switch knob open Terminal COM NC 1 3 Ω Terminal COM NO 1 2 1Ω 2 Door switch push On Terminal COM NC 1 3 Ω Terminal COM NO 1 2 1Ω Light resistance 80 100 Ω Violet gray Belt Cut off S W Lever open Resistance value 1Ω Lever push Resistance value Motor Electronic GAS Contacts Centrifuga...

Page 7: ...OR CN3 CN6 123 45 Gas Valve Sensor Bars temperature sensor check Sensor Bars Disconnect harness and test Pink wire Pin 4 to Orange wire Pin 5 Approx infinity Ω without laundry load approx 190 Ω 10 with wet clothes Cycling Thermostat Disconnect harness and test Blue wire Pin 2 to Red wire Pin 6 Approx 10 K Ω at 25 C 77 F Check across terminals 1 and 3 Booster Coil 550 ohms Check across terminals 1 ...

Page 8: ...Schematic WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires power 16026881 September 2006 RPL 16026540 2006 Maytag Services 8 ...

Page 9: ...Schematic WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires power September 2006 9 16026881 2006 Maytag Services RPL 16026540 ...

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