Midea ATOM MDV-V56WDHN1(AtB)

Atom B Series VRF 50/60Hz
57
Part
6
-
Diagnosis and Troubleshooting
2.9 E.9.: Compressor parameters mismatch (For all models)
2.9.1 Digital display output
E.9.
2.9.2 Description
 Main control chip detect the power setting number mismatch the model, the unit will display E.9. error.
 The system stops running.
 Error code is displayed on the outdoor unit PCB.
2.9.3 Trigger / recover condition
 Trigger condition: Main control chip detect the power setting number mismatch the model.
 Recover condition: Main control chip detect the power setting number match the model.
 Reset method: Manually restart.
2.9.4 Possible causes
 Power number setting mistake.
 Damaged main PCB.
2.9.5 Procedure
E.9.
Confirm whether the power setting number is
corresponding with the outdoor unit
1
No
Power off and reset the
power number
Yes
Replaced outdoor main control board
Notes:
1. Power setting switch is only for 36-56 model; 28 model don’t need to setting