Midea
V8
Series VRF Indoor Units
6.1.44 U38 - Address code not detected
Panel, display box, and wired controller
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
"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")
When detecting that the address code for IDU main control board has not been set
The address code has not been set after replacing the IDU main control board.
The new IDU main control board is damaged.
U38
Is the fault cleared?
Replace the main control
board of the IDU
Fault cleared
Yes
No
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
Note 1: For instructions on how to set up addresses for a remote controller or a wired controller, please refer
to relevant manuals.
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