Sinclair SDV 6 Service Manual page 130

8.1.60 J6E - Phase lack protection of motor
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.
When the motor phase lacks protection
Automatic recovery
 The motor plug connecting to the U/V/W port in the IDU main control board is loose.
 The fan drive board is damaged.
 The IDU main control board is damaged.
J6E
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
query
Cause 1: The motor plug connecting
to the U/V/W port in the IDU main
control board is loose
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
displayed
Reconnect the loose
plug
Replace the fan drive
board (1)
Replace the main
control board of the
IDU
127