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© 2000 Maytag Appliances Sales Company

16023110

Section 9.     Dryer Controls Overview

9-12

 

Control Configuration 

This Trouble Shooting guide illustrates how the software 
works with the 13 and 15 key membrane switches. The 
section on Accessing Diagnostic Codes includes 
instruction for use with older control boards. 

 

13 Key Membrane 

 
 
 
 
 
 
 

15 Key Membrane

 

 
 
 
 
 
 
 
Service Mode 

This mode provides Service Personnel the ability to 
verify the operation of the dryer. 

 

The Service Mode can be implemented in the middle of 
any dry cycle. While in the Service

 

Mode, the 

Technician can start special diagnostic tests such as a 
System Check Mode, Membrane Pad Check, Display 
Software version number and display diagnostic/help 
code listings. 

 

Enter Service Mode:

 

Press 

Air Fluff

 

and 

Time (^)

 

- 13 Key Membrane.

 

or 

Air Fluff

 

and

 Time (+) 

- 15 Key

 

Membrane.

 

keys for 3 seconds, or until a beep is heard. The 
machine will now be in Service Mode and “

d

” will be 

displayed. 

 

Exit Service Mode 

Press the 

OFF 

key to exit Service Mode or repeat the 

Air Fluff

 

and

 Time (+) 

sequence. 

 

Diagnostic Tests

 

The following table lists the various tests available while 
in the Service Mode, which can be accessed by 
pressing the following keys:

 

Key Press 

Special 
Test/Function 

Wrinkle release 

 
Then press 

Temperature (^) 

- 13 Key

 

or

 

Dry Temp (^) 

- 15 Key

 

 

Display list of 
diagnostic codes. 
 
To sequence thru 
the diagnostic 
and help codes. 

Time (v) 

- 13 Key

 

or

 

Time (-) 

- 15 Key

 

Display revision 
number 
 

Sensor Dry Level (^) 

- 13 

Key

 

or 

Very Dry (<) 

- 15 Key

 

View current 
cycle temperature 
in Celsius 
 

Key Press 

Special 
Test/Function 

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

" will display. The following table 

lists the various functions based on the keys being 
pressed. 

 

System Check Mode Table

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Membrane Pad Check 

 

The membrane check turns all the embedded LED’s on. 
All the LED’s can then be toggled off by pressing the 
key associated with the LED. 

 

While in 

System Check

 Mode, pressing the  

 

Air Fluff 

and

 Sensor Dry 

- 13 Key

 

or 

Air Fluff

 and

 Sensor Dry 

- 15 Key

 

 

keys for 2 seconds, will start a Membrane Pad Switch 
Test. To exit the test at any point, press the same keys 
again for 2 seconds or press the 

OFF

 key to exit 

Service Mode. 
 

Key Pressed: 

Function 
Performed 

Sensor Dry  

Enable sensor 
dry circuit (sense 
dry LED) when 
short circuit is 
detected across 
the sensor bars 
the normal dry 
LED will turn on

.

 

Start/Pause 

Cycles the motor 
relay on/off. 
When the motor 
is running the 
start/pause LED 
is on. 

Temperature (^) 

- 13  Key

 

or 

Dry Temp (^) 

- 15 Key

 

 

If motor is 
running, cycles 
the heater/gas 
valve on/off. 
When the heater 
is regular temp 
LED is on. 

Sensor Dry Level (^) 

- 13 

Key

 

or 

Very Dry (<) 

- 15 Key 

View current 
cycle temperature 
in Celsius. 

DRYER CONTROLS MDE/MDG6800, MDG5500

Содержание 1999 Sloped-Front

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Страница 7: ...UITY CHECKS MDE MDG6800 MDG5500 9 14 SERVICE MODE MDE MDG7500 MDE MDG9800 9 15 USER INTERFACE MDE MDG7500 MDE MDG9800 9 16 MEMBRANE PAD CHECK MDE MDG7500 MDE MDG9800 9 16 SYSTEM CHECK MDE MDG7500 MDE MDG9800 9 16 DIAGNOSTIC HELP CODES MDE MDG7500 MDE MDG9800 9 16 MEMBRANE PAD CONTINUITY CHECKS MDE MDG7500 MDE MDG9800 9 17 SECTION 10 ELECTRICAL SCHEMATICS 10 1 MDE3000 10 1 MDG3000 10 2 MDE4000AZ MD...

Страница 8: ... 2000 Maytag Appliances Sales Company vi Contents MDE6200 Canada 10 26 MDE6800 10 27 MDG6800 10 28 MDE9800 10 29 MDG9800 10 30 ...

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Страница 15: ...ag Appliances Sales Company Section 1 General Information 1 7 MDE DG5500 Facia LED Screen MDE DG7500 Facia LCD Screen PRODUCT SPECIFICATIONS Same specifications as outlined in service manual part number 16009968 ...

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Страница 23: ...2 1 BB2 3 120VAC Door must be closed Electric Dryer Only Door Sense BB2 3 BB1 2 120VAC Door must be closed 24 VDC Input BB2 4 BB1 2 24VDC Thermistor J4 1 J4 2 5VDC NTC 70o F 10K ohms 150o F 1754 ohms Sensor Bar J4 3 J4 4 24VDC Description Connector Pin Number Connector Pin Number Voltage Comments Heater Relay Internal Output P1 BB1 1 120VAC L1 Board Input BB1 1 BB2 3 120VAC Door must be closed Mot...

Страница 24: ...ard and locating the corresponding switch pin numbers in the ribbon harness LCD Dryer LED Dryer Membrane Pad Pin Number Pin Number sensor dry J7 12 J7 13 time dry J7 11 J7 13 time J7 10 J7 13 time J7 9 J7 13 Dry Temp J7 11 J7 14 Dry Temp v J7 10 J7 14 Dryness J712 J7 14 Dryness J7 9 J7 14 wrinkle release J7 11 J7 15 press care J7 9 J7 15 air fluff J710 J7 15 start pause J7 11 J716 signal J7 12 J7 ...

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Страница 31: ... Grasp the top of the console and gently rock the top of the console forward away from the rear console back Note the hooked tabs on bottom of the console which engage the slots in the top cover Warning Always shut off electrical power to the dryer before beginning any Figure 4 8 5 For reinstallation reverse the aforementioned steps MICROPROCESSOR BOARD REMOVAL 1 Disconnect power to the dryer 2 Re...

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Страница 58: ...pt illumination of the touch screen panel While in advertising mode the display will cycle through eleven screens If the touch screen or any key except off is pressed the advertising sequence will be interrupted and the control will go to the Interactive State When this occurs the user is able to navigate through the control as normal including setting favorites setting preferences etc but the mac...

Страница 59: ...ing table lists the various tests available while in the Service Mode which can be accessed by pressing the following keys Press Keys Special Test Function wrinkle release Diagnostic Codes dryer temp Sequences up the help diagnostic code list dryer temp v Sequences down the help diagnostic code list time Displays Software Revision Number very dry View current cycle temperature Co start pause Start...

Страница 60: ...nd outputs to be controlled and viewed by the technician by pressing individual keys If no activity is seen for 5 minutes after a key is depressed the control will reset back to the normal mode If no further activity is seen after an additional 5 minutes the washer will turn off The following table lists the various functions based upon on keys being de pressed Membrane Pad Check While in system c...

Страница 61: ...h screen The service technician is prompted to Touch the four corners and center of the touch screen in any order When each area is pressed the display will reverse image If all areas are sensed the control will display Touch screen test passed If any area s is not sensed within 5 seconds the technician will be prompted to Touch the area s not highlighted If the area can still not be sensed within...

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Страница 64: ...c and help codes Time v 13 Key or Time 15 Key Display revision number Sensor Dry Level 13 Key or Very Dry 15 Key View current cycle temperature in Celsius Key Press Special Test Function 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 s...

Страница 65: ...stic 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 1...

Страница 66: ...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 Connector Pin Num Voltage Comments Heater Relay Internal Output P1 BB1 1 120VAC LI Board inp...

Страница 67: ...middle of any dry cycle While in the Service Mode the Technician can start special diagnostic tests such as a System Check Mode Membrane Pad Check Display Software version number and display diagnostic help code listings Removing A Favorite Cycle If the consumer wants a favorite cycle removed see below Enter Service Mode Press Help and Back Keys for 3 seconds or until a beep is heard Exit Service ...

Страница 68: ...will shut down the machine If all keys are pressed Membrane switch test passed will be displayed If any key s are not pressed within 5 seconds the user will be prompted to Touch the key s that are not highlighted If key s again are not pressed within 5 seconds the display will show which key s failed System Check Cycle Not Running System checks can be performed whether the dryer is in a dry cycle ...

Страница 69: ...ble 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 5 Not Used 6 Non Volatile Memory Problem Detected with integrity of parameters stored in EEPROM mem...

Страница 70: ...ments Heater Relay Internal Output P1 BB1 1 120VAC LI Board input BB1 1 BB2 3 120VAC Door must be closed Motor input BB1 2 BB2 3 120VAC Door must be closed Neutral input BB2 2 BB1 1 120VAC Door Sense BB2 3 BB1 1 120VAC Door must be open Thermistor J4 1 J4 2 5VDC NTC 70 F 10K ohms 150 F 1754 ohms Sensor Bar J4 3 J4 4 24VDC MDE MDG7500 MDE MDG9800 ...

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Страница 98: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 27 MDE6800 ...

Страница 99: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 28 MDG6800 ...

Страница 100: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 29 MDE9800 ...

Страница 101: ... 2000 Maytag Appliances Sales Company 16010297 16009968 02 Section 10 Wiring Diagrams 10 30 MDG9800 ...

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