U38 Address Code Not Detected - Midea V8 VRF Series Service Manual

V8 VRF Indoor Units
6.1.44 U38 - Address code not detected
Error display
1) The faulty IDU stops running.
2) Other IDUs of the same system: The fan continues running, the EXV is closed, and ODU error code
Error impact "A51" is displayed (V6 platform IDU displays the code "Ed").
ODU of the same system: Otherwise, the ODU will display the error code "C26" (number of IDUs reduced)
(V6 platform ODU displays the code "H7")
Error trigger
When detecting that the address code for IDU main control board has not been set
Error recovery
Automatic recovery

Possible cause

Troubleshooting
Note 1: For instructions on how to set up addresses for a remote controller or a wired controller, please refer
to relevant manuals.
92
Digital display
The address code has not been set after replacing the IDU main control board.
The new IDU main control board is damaged.
Use the remote controller
or wired controller (1) to
set the address code for
the main control board of
IDU, and power on the
unit again
Is the fault cleared?
Yes
Fault cleared
Panel, display box, and wired controller
U38
No
Display position
Replace the main control
board of the IDU