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16027056                                                                     4                                                              

 September 2006

                                                                                                                                                   

©2006 Maytag Services

!

WARNING

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

Troubleshooting Procedures

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.

 

 
Accessing Diagnostic Codes with 13 Key Membrane 

Press 

Air Fluff

 

and 

Time (^) 

to enter Service Mode. 

Press the 

Wrinkle Release

 key to access the 

Diagnostic Codes. Scroll through the Diagnostic Codes 
by pressing the 

Temperature (^) 

key. The first time the 

key is pressed the newest code will be displayed. Each 
additional key press shows the next code. Once all the 
codes have been displayed a “

d

” is displayed and the 

process repeats. If there are no Diagnostic Codes 
available, “

00

” will be displayed for the Diagnostic Code.

 

 
Accessing Diagnostic Codes with 15 Key Membrane 

Press 

Air Fluff

 and

 Time (+) 

to enter Service Mode. 

Press the 

Wrinkle Release

 key to access the 

Diagnostic Codes. Scroll through the Diagnostic Codes 
by pressing the 

Temperature (^)

. The first time the key 

is pressed the newest code will be displayed. Each 
additional key press shows the next code. Once all the 
codes have been displayed a “

d

” is displayed and the 

process repeats. If there are no Diagnostic Codes 
available, “

00

” will be displayed for the Diagnostic Code. 

 
There will be no multiple occurrences of either a 
diagnostic code or help code generated in the same 
cycle reported on the list. But if the same code occurs in 
repeated cycles, it will be registered. 
 

Clearing Diagnostic Codes 
 

To clear the diagnostic code list press 
 

Air Fluff

 and 

Wrinkle Release 

- 13 Key

 

or 

Air Fluff 

and

 Wrinkle Release 

- 15 Key

 

 

for 3 seconds while in diagnostic mode. 
 

Diagnostic Codes 

Code Description  Trigger 

Action 

Taken 

Dryer Thermistor 
Short Sensed 

The 
thermistor 
resistance is 
very low, 
with a 
temperature 
> 175 ºF. 

Check for:   

-

 Clogged 

lint 

screen. 

-

 Restricted 

vent system.

 

Failed thermistor. 

Code Description  Trigger 

Action 

Taken 

Thermistor Open 
Sensed  

The 
thermistor 
resistance is 
very high 

Check for:  

-

 Low 

ambient 

temperature in 
room (Below 
50ºF/10ºC). 

-

 Outside 

vent 

damper is stuck 
open in 
wintertime. 

 Loose or open wire 

terminals 

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. 

Not Used 

 

 

Non Volatile 
Memory 

Problem 
Detected 
with integrity 
of 
parameters 
stored in 
EEPROM 
memory. 

Disregard 

Stuck Key 

A key is 
sensed to be 
pressed 
more than 
75 seconds, 
the key shall 
be assumed 
to be stuck.  

 Run membrane pad 

check and replace 

console w/membrane 

pad if necessary. 

 

 

Summary of Contents for MDE5500A Series

Page 1: ...authorized technician for servicing or repair of this unit Refer to Service Manual 16023110 for detailed installation operating testing troubleshooting and disassembly instructions CAUTION All safety information must be followed as provided in Service Manual 16023110 WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing require...

Page 2: ...es wrinkled rough texture long dry time Lint filter is not clean Restriction in exhaust Outside exhaust hood damper door stuck closed Exhaust too long too many elbows flex ductwork installed Poor makeup air available for the dryer Incorrect tumbler speed Tumbler belt slipping Blower impeller bound check for foreign material in blower area Customer overloading dryer Check clothing labels for fabric...

Page 3: ... or Time 15 Key Display revision number Sensor Dry Level 13 Key or Very Dry 15 Key View current cycle temperature in Celsius Start Pause Start or pause cycle running but remain in diagnostic mode System Check Mode While in Service Mode pressing the Air Fluff and Signal 13 Key Membrane or Air Fluff and Signal 15 Key Membrane keys for 3 seconds will put the dryer into the System Check mode and SC wi...

Page 4: ...displayed and the process repeats If there are no Diagnostic Codes available 00 will be displayed for the Diagnostic Code There will be no multiple occurrences of either a diagnostic code or help code generated in the same cycle reported on the list But if the same code occurs in repeated cycles it will be registered Clearing Diagnostic Codes To clear the diagnostic code list press Air Fluff and W...

Page 5: ...ey J7 9 J7 13 Temperature 13 Key Dry Temp 15 Key J7 11 J7 14 Dry Temp v 15 Key J7 10 J7 14 Sensor Dry Level 13 Key Very Dry 15 Key J7 12 J7 14 Damp Dry 15 Key J7 19 J7 14 Wrinkle Release J7 11 J7 15 Wrinkle Prevent J7 9 J7 15 Air Fluff J7 10 J7 15 Start Pause J7 11 J7 16 Signal v 13 Key Signal 15 Key J7 12 J7 15 Off J7 9 J7 16 Signal 13 Key Signal 15 Key J7 12 J7 16 Description Connector Pin Num C...

Page 6: ... 6 September 2006 2006 Maytag Services WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires power Wiring Schematics Series 10 36 ...

Page 7: ...06 7 16027056 2006 Maytag Services WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires power Wiring Schematics Series 37 66 63901290 ...

Page 8: ...eptember 2006 2006 Maytag Services Series 67 to current WARNING To avoid risk of electrical shock personal injury or death disconnect power to dryer before servicing unless testing requires power Wiring Schematics ...

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