Sinclair SDV 6 Service Manual page 63

8.1.3 A51 - ODU fault
Error display
Error impact
Error trigger
Error recovery
Possible cause
Troubleshooting
60
Digital display
The faulty IDU and other IDUs of the same system: The fan continues running, the EEV is closed,
and code "A51" is displayed (SDV5 platform IDU displays the code "Ed")
ODU of the same system:
 stops.
 The displayed code depends on the error type of the ODU. For the meaning of the code,
please refer to the error table specific to the model of the ODU.
Duration of ODU error ≥ 10 minutes
Automatic recovery
 The ODU error is transmitted to the IDU.
 The IDU main control board is damaged.
Troubleshoot ODU
according to ODU
Maintenance Guide
whether the fault is
cleared
Yes
Fault cleared
A51
Check
No
Display position
Panel, display box, and wired controller
Replace the main control
board of the IDU