GREE U-Match 6 SERIES UNIT SERVICE MANUAL
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3.4.21 “C8” ODU Driver Jumper Cap Error
Error display:
ODU mainboard, IDU wired controller and IDU receiver light board will display C8
Error judgment condition and method:
If jumper cap model doesn’t match with driver, report the error
Possible reason:
■Driver Jumper cap is not installed
■Driver Jumper cap model is wrong
■Detecting circuit is abnormal
Troubleshooting:
3.4.22 “EL” Emergency Stop (Fire Alarm)
If fire alarm terminal is enabled after the IDU mainboard connects to function expansion panel, error
EL will be reported.
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