Midea V8 VRF Series

V8 VRF Indoor Units
44
Midea
V8
Series VRF Indoor Units
6.1.3 A51 - ODU fault
Error display
Digital display
Display position
Panel, display box, and wired controller
Error impact
The faulty IDU and other IDUs of the same system: The fan continues running, the EXV is closed,
and code "A51" is displayed (V6 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.
Error trigger
Duration of ODU error ≥ 10 minutes
Error recovery
Automatic recovery
Possible cause
 The ODU error is transmitted to the IDU.
 The IDU main control board is damaged.
Troubleshooting
A51
Troubleshoot ODU
according to ODU
Maintenance Guide
Check
whether the fault is
cleared
Replace the main control
board of the IDU
Fault cleared
Yes
No