Midea V8 VRF Series Service Manual page 78

6.1.30 dE1 - Sensor control board fault
Error display
The faulty IDU and other IDUs of the same system: operate normally.
Error impact
ODU of the same system: operate normally.
Error trigger
If the main control board of an IDU has lost communication with sensor control board for 2 min
Error recovery
Automatic recovery
Possible cause
See the Troubleshooting section.
Troubleshooting
Digital display
Cause 1: The communication cable
between the main control board of
the IDU and the sensor control
board has become disconnected or
Cause 2: The communication cable
between the main control board of
IDU and the adapter board has
dE1
Cause 3: The IDU main control
Cause 4: The sensor control board is
Panel, display box, and wired controller
short circuited
become loose
board is damaged
damaged
V8 VRF Indoor Units
Display position
Replace the
communication
cable and properly
connect the cable
Connect the cable
properly
Replace the main
control board of the
IDU
Replace the sensor
control board
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