Sinclair SDV 6 Service Manual page 121

8.1.51 J11 - Instantaneous overcurrent protection for phase current
Error display
Error impact
Error trigger
Error recovery
Possible cause
Troubleshooting
118
Digital display
The faulty IDU stops. Other IDUs of the same system: operate normally.
ODU of the same system: operate normally.
The current value (AC) detected for any phase line of U/V/W on the IPM exceeds the set
overcurrent protection value of the driver.
Automatic recovery
 Motor coils are short circuited, or motor bearing is worn, resulting in abnorm al increase of
motor current.
 The fan drive board is damaged.
 The IDU main control board is damaged.
resistance between the red, white, and black
Cause 2: The motor bearing is severely worn,
to create noise when rotating and to overheat
J11
Cause 4: If the error cannot be cleared after
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: Measure the inter-turn winding
wires of the motor power cable. If there is a
short circuit or an open circuit, the motor is
damaged
resulting in overcurrent. It causes the motor
Cause 3: The fan drive board is damaged
causes 1/2/3 have been eliminated, the
main control board of the IDU is damaged
Display position
Wired controller
Error code is not
query displayed
Replace the motor
Replace the motor
Replace the fan drive
board (1)
Replace the main
control board of the
IDU