J43 Phase Current Sample Bias Error - Midea V8 VRF Series Service Manual

V8 VRF Indoor Units
6.1.50 J43 - Phase current sample bias error
Error display
The faulty IDU stops. Other IDUs of the same system: operate normally.
Error impact
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

Troubleshooting
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.
98
Digital display
The current sampling circuit of the fan drive board is damaged.
The IDU main control board is damaged.
J11
Replace
the fan drive board.
Is the fault
cleared?
No
Replace the main control
board of the IDU
Display position
Panel or display box
Spot check interface
query
Yes
Replace the fan drive
board (1)
Wired controller
Error code is not
displayed