Sinclair SDV 6 Service Manual page 128

8.1.58 J52 - Motor blocking protection
Error display
Error impact
Error trigger
Error recovery
Possible cause
Troubleshooting
Digital display
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
The motor is blocked.
Automatic recovery
 The motor shaft gets stuck.
 The fan drive board is damaged.
 The IDU main control board is damaged.
J52
Note 1: 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.
Panel or display box
Spot check interface
Cause 1: The motor shaft is clogged by
foreign material
Cause 2: The fan drive board is
damaged
Cause 3: If the error cannot be cleared
after causes 1/2/3 have been
eliminated, the main control board of
IDU is damaged
Display position
Wired controller
Error code is not
query displayed
Replace the motor
Replace the fan drive
board (1)
Replace the main
control board of the
IDU
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