Maytag MDE DG5500, MDG9800 service manual LED Dryer

To aid the service technician, special software was incorporated into the control boards of the MDE/DG5500 & MDE/DG7500 dryers. The software is used to monitor several functions of the dryer during operation and identify any abnormalities as they arise. These abnormalities can be monitored in the Service Mode and the board will list previously identified failures as either a Help or a Diagnostic code.

The Diagnostic codes are identified when the severity level of the abnormality detected is higher and service may be required.

Both code lists are stored in separate permanent memories with a maximum of nine codes per list.

NOTE: Due to the various differences in the two dryer control systems, the following pages will focus first on the LED dryer then the LCD dryer.

LED DRYER

Accessing Service/Diagnostic Mode:

Pressing down the damp dry and time (-)keys for 5 seconds places the machine in the diagnostic mode.

SPECIAL TESTS

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

16023110

Press Keys	Special Test/ Function
wrinkle	Diagnostic Codes
release
dryer	Sequences up the
temp(^ )	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 or pause cycle running
start/pause	but remain in Diagnostic
	mode

Diagnostic Codes:

When a problem with the dry system is detected a diagnostic code is assigned and logged into the control board memory. An assigned diagnostic code indicates the dryer may need to be serviced. The control board will not log mulitple same codes per cycle, however, it will log as many diagnostics as possible for the machine to continue running.

See the diagnostic code table for specific actions or references to where the proper action is defined. (See page 15)

Accessing Diagnostic Codes

After the machine is in the diagnostic mode, a ‘d’ will display and let the technician know they are in the diagnostic mode. Pressing the wrinkle release key will access the diagnostic codes.The diagnostic codes can be viewed by using the temperature (^) & (v) keys.

Section 9. Dryer Controls Overview 9-7

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