Midea V8 VRF Series

V8 VRF Indoor Units
98
Midea
V8
Series VRF Indoor Units
6.1.50 J43 - Phase current sample bias error
Error display
Digital display
Display position
Panel or display box
Wired controller
Spot check interface
query
Error code is not
displayed
Error impact
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Error trigger
When detecting that the current sample is 50% greater than 2.5 V
Error recovery
Automatic recovery
Possible cause
 The current sampling circuit of the fan drive board is damaged.
 The IDU main control board is damaged.
Troubleshooting
J11
Replace
the fan drive board.
Is the fault
cleared?
Replace the fan drive
board (1)
Replace the main control
board of the IDU
Yes
No
Note 1: Please observe the following rule when replacing the fan drive board: For units whose fan
drive board is welded onto the main control board, if either the fan drive board or main control
board becomes faulty, the whole control board has to be replaced.