Electrolux W4400H Service Manual page 58

58
OVER CURRENT
The motor controller indicates a short-circuit in
the motor windings, cabling or internally in the
motor controller.
If the power is on, be very careful when wor-
king on the the machine.
Switch off the machine for at least 0 seconds to
ensure the motor controller has been completely
reset. Then try to start the machine again. If the
error returns, troubleshoot as follows:
1. Switch off the machine. Undo the contactor at X3 on
34
the motor. Use an ohmmeter to measure the resistance
towards the motor. Measure between 1-2, 1-3, and 2-3.
Correct resistance should be:
W4400H W600H W850H, W1100H
cold motor 0,84 ohm 0,68 ohm
hot motor 1,1 ohm 0,9 ohm
Correct resistance
2. Inspect the cabling from X312 on the motor controller
35
to X3 on the motor. Use an ohmmeter and measure the
five leads as follows:
X312: U V
X3: 1 2
Also measure the five leads to be sure there is no short-
circuit between any two leads.
Cabling OK
The motor controller output is defective.
Troubleshooting
0,48 ohm
0,6 ohm
One of the resistance values is
incorrect
The motor is probably
defective.
W T1 T2
3 7 9 (X3:4 - 6, 8 not used)
Incorrect cabling
Inspect the cabling and replace
if necessary.
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Contactor X, female towards motor
9 7
7
4
1
1
3 2
Measure resistance between pins 1, 2, , 4,
5 and 6.
35
9
6

402 A
X12
5950
M1
X12