Midea V8 VRF Series Service Manual page 47

V8 VRF Indoor Units
6.1.5 A72 - The error of the linked humidifying IDU is transmitted to the master IDU
Error display
Master IDU: operates normally. Humidifying IDUs: stop. Other IDUs of the same system: operate
Error impact normally.
ODU of the same system: operate normally.
Error trigger
The error of the linked humidifying IDU is transmitted to the master IDU
Error recovery
Automatic recovery

Possible cause

Troubleshooting
Note:
1. The error code can be queried after the humidifying IDU is connected to the wired controller or
the display box.
46
Digital display
The humidifying IDU is faulty.
The master IDU's main control board is damaged.
A72
Obtain the linked error code
(1) of the humidifying IDU,
and refer to the
corresponding error handling
method in the maintenance
manual of the humidifying
IDU for troubleshooting
Error in
humidifying IDU
After troubleshooting, is the
master IDU error code
cleared?
Yes
Fault cleared
Display position (master IDU)
Panel or display box
Spot check interface
query
No
Replace the the main control
board of the master IDU
Wired controller
Error code is not
displayed