Midea V8 VRF Series - Page 65

V8 VRF Indoor Units
64
Midea
V8
Series VRF Indoor Units
6.1.17 C41 - Abnormal communication between IDU main control board and fan drive board
Error display
Digital display
Display position
Panel, display box, and wired controller
Error impact
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Error trigger
If the main control board of an IDU has lost communication with the fan drive board for 2 min (3)
Error recovery
Automatic recovery
Possible cause
 The fan drive board is damaged.
 The IDU main control board is damaged.
 The communication cable between the fan drive board and the IDU main control board has become
loose.
Troubleshooting
C41
Cause 2: The IDU main control
board is damaged
Cause 3: The fan drive board is
damaged (2)
Cause 1: The communication
cable between the fan drive
board and the IDU main control
board has become loose (1)
Reconnect the
loose plug
Replace the main
control board of the
IDU
Replace the fan
drive board
Note:
1. Communication cables are only provided for units whose fan drive board is independent of the IDU main
control board.
2. 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.