Midea V8 VRF Series - Page 67

V8 VRF Indoor Units
66
Midea
V8
Series VRF Indoor Units
6.1.19 C61 - Abnormal communication between the IDU main control board and display control board
Note: The error code C61 can be triggered either at the IDU side or at the panel or display box side.
Error display
Digital display
Display position
Triggered at the IDU side
Triggered at the panel or
display box side
Panel, display box, and
wired controller
Panel, display box, and
wired controller
Error impact
The faulty IDU and other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
Error trigger
 Triggered at the IDU side: If the main control board of the IDU has been connected to the display
board but has not communicated with the display board for 2 min;
 Triggered at panel or display box side: If the display board has not received any reply from the main
control board of an IDU for 1 min
Error recovery
Automatic recovery
Possible cause
 The display control board is damaged.
 The IDU main control board is damaged.
 The communication cable between the display control board and the IDU main control board has
become loose.
Troubleshooting
C61
Cause 2: The IDU main control
board is damaged
Cause 3: The display control board
is damaged
Cause 1: The communication
cable between the display control
board and the IDU main control
board has become loose
Reconnect the loose
plug
Replace the main
control board of the
IDU
Replace the display
control board