Midea V8 VRF Series User Manual

V8 VRF Indoor Units
72
Midea
V8
Series VRF Indoor Units
6.1.25 C76 - Abnormal communication between the main wired controller and secondary wired controller
Note: The error code C51 can be triggered either at the IDU side or at the wired controller side.
Error display
Digital display
Display position (secondary wired controller)
The error code "C76" is displayed only on the secondary wired
controller
Error impact
The faulty IDU and other IDUs of the same system: operate normally. The wired controller does not work.
ODU of the same system: operate normally.
Error trigger
If the secondary wired controller has not received any reply from the main wired controller for 1 min
Error recovery
Automatic recovery
Possible cause
 The secondary wired controller is damaged.
 Communication cables are loose or the communication port is faulty.
 Communication cables have short-circuited or been cut off.
Troubleshooting
C76
Cause 3: The secondary wired
controller is damaged
Cause 2: The communication
cable between the secondary
wired controller and the main
wired controller has become
loose or is connected to a wrong
port
Properly connect the
cables and ensure they
are connected to the right
ports
Replace the secondary
wired controller
Cause 1: The communication
cable between the secondary
wired controller and the main
wired controller has become
disconnected or short circuited
Replace the
communication cable and
properly connect the
cable

Midea V8 VRF Series Specifications

General

Brand	Midea
Model	V8 VRF Series
Category	Air Conditioner
Language	English