Errors In Sewing Process; [Bar] 6 - DURKOPP ADLER 827 Service Instructions Manual

Troubleshooting

23.3 Errors in sewing process

Error
Unthreading at seam
beginning
Thread breaking
Service Instructions 827/827-M - 01.0 - 05/2019
Code Possible cause
8401 Watchdog
8402 - Internal error
8405
8406 Checksum error
8501 Software protection
Possible causes
Needle thread tension is
too firm
Needle thread and hook
thread have not been
threaded correctly
Needle is bent or sharp-
edged
Needle is not inserted
correctly into the needle
bar
The thread used is
unsuitable
Thread tensions are too
tight for the thread used
Thread-guiding parts, such
as thread tube, thread
guide or thread take-up
disk, are sharp-edged
Throat plate, hook or
spread have been
damaged by the needle
Remedial action
• Perform a software update
• Perform a machine ID reset
• Replace control
• Perform a software update
• Perform a machine ID reset
• Replace control
• Perform a software update
• Replace control
• The DA tool must always be used
for software updates
Remedial action
Check needle thread tension
Check threading path
Replace needle
Insert the needle correctly into
the needle bar
Use recommended thread
Check thread tensions
Check threading path
Have parts reworked by qualified
specialists
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