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
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 |
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