
74
Trouble shooting
31E
Temperature of motor control
unit heat sink too high.
3333
Short-
circuit
3402
Connector X3, female,
to motor control unit
1
3
9
7
2
Error codes which may arise on the control panel display
Short-circuit
Error code/symptoms
Fault-finding
Cause/Action
This error code can occur if the ambient
temperature has been extremely high. If so,
lower the temperature, e.g. by opening a
window.
Turn off the machine’s wall switch. Wait at least
10 minutes for the heat sink to cool, then switch
on the machine power supply again. Check that
the drum and motor rotate smoothly.
Drum/motor OK
Drum/motor not rotating
smoothly
Start the service program. Run the motor on low
wash speed, anticlockwise (code 25) and
clockwise (code 26). Check for any abnormal
noise from drum/motor.
Drum/motor OK
Noise from drum/motor
Run the motor at increasing speeds (high wash
speed code 27-28, distribution speed code 29,
extraction code 31-34). If no error code arises,
finally run motor for at least 10 minutes on its
highest extraction speed (code 33).
Error code returns
No error code
Turn off the machine’s wall switch and wait 10
minutes. Disconnect connector X3 by motor.
Short-circuit X3:7 and 9 as illustrated (to
simulate motor thermal cut-out). Switch on
machine power supply, start service program
and simulate extraction with code 33 for at least
10 minutes.
Error code returns
No error code
Turn off the machine’s wall switch and wait 10
minutes. Disconnect connector X312 on motor
control unit. Short-circuit X312:3 and 4 as
illustrated. Switch on machine power supply,
start service program and simulate extraction
with code 33.
Error code returns
No error code
X312
Internal fault in motor control
unit. Replace motor control
unit.
Fault in wiring between motor
control unit and motor. Check
wiring and replace it if
necessary.
Internal fault in motor causing
excessively high currents in
motor control unit. Replace
motor.
Transient fault. No action
required.
Bearing failure in drum or
motor or objects between
inner and outer drum.
Investigate and remedy.