J45 Motor And Idu Are Unmatched - Midea V8 VRF Series Service Manual

6.1.51 J45 - Motor and IDU unmatched
Error display
The faulty IDU stops. Other IDUs of the same system: operate normally.
Error impact
ODU of the same system: operate normally.
Error trigger
If the motor code sent by the IDU main control board is not found in the fan driver
Error recovery
Automatic recovery
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Possible cause
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Troubleshooting
Note:
1. For specialized tooling and instructions, please contact your local dealer or technical support personnel.
2. Please observe the following rule when replacing the fan drive board: For units whose fan drive board is
welded onto the main control board, if either the fan drive board or main control board becomes faulty, the
whole control board has to be replaced.
Digital display
Unit model code or horsepower code is incorrectly set.
The fan drive board is wrong or damaged.
Use the dedicated to oling (1) to
set the mo del cod e a nd cap acity
code fo r the main co ntro l b oard
of IDU according to the IDU
model or nomina l capacity, and
power on the unit ag ain
Is th e fault cle ared?
Yes
Fault clear ed
J45
No
Replace th e fan drive board (2)
V8 VRF Indoor Units
Display position
Panel, display box, and wired controller
99