Midea ATOM B Series Service Manual page 50

2.3 H0: Communication fault between main board and communicate converter board (For 60 model)
2.3.1 Digital display output
H0
2.3.2 Description
 Communication fault between main board and motor control module.
2.3.3 Trigger / recover condition
 Trigger condition: Motor control module and ODU main control board cannot communicate.
 Recover condition: Communication go back to normal.
 Reset method: Resume automatically.
2.3.4 Possible causes
 Main control board is damage.
2.3.5 Procedure
H0
Main control board is damage.
Atom B Series VRF 50/60Hz
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