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2.3 Troubleshooting
Error code
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C51
Communication fault between
CE9
Error display
1. In case any IDU or ODU fails, the wired controller displays the fault code. In
case a communication fault occurs between the wired controller and any of
the IDUs, the wired controller reports "C51".
2. The wired controller can record up to 10 faults, each of which includes the
address of the faulty device, the fault code, and the time when the fault occurs.
Error
wired controller and IDU
Error code：C51
51
Remarks
JR8 / 3rd gen IDU
2nd gen IDU
V.1
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