Connection failure of the Pump Motor or the Pump Motor encoder.
The number of occurrences of overcurrent to the Pump Motor has reached a predetermined limit: irregular load, pump motor encoder failure, pump motor failure.
Check points :
Is there any problems such as damaged cable in the pump motor (pump motor encoder) to main board connection?
Does the Pump Motor encoder work properly?
Remedy :
Replace the Pump Motor encoder and Pump Motor (Pump Cap Unit).