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Inverter
The inverter receives commands from the control
board and controls motor operation.
For the inverter to operate the motor correctly
requires a supply voltage of 120 VAC, DC input from
the control board, and the three motor windings
intact.
Specific failures associated with the inverter can
initiate error codes E50,E5B,E5F,E52,E53,E55
and
E57. (See
Service Test Mode
To check the inverter:
1.
Remove the service panel. (See Service Panel.)
2.
Press the 4 tabs inward and remove the junction
box cover.
3.
Check for 120 VAC between the blue and red
wires at the AC input harness.
Note: The 120 VAC inverter supply voltage is present
only when the motor is supposed to be operating.
4.
Unplug washer, then check motor resistance.
(See
Motor Assembly
5.
If 120 VAC is present at the AC input harness and
motor resistance is correct, replace the inverter.
Note: If the inverter overheats, the washer will stop
for 5 minutes.
The separate inverter
The inverter is enclosed in a protective housing and is
located on the chassis, under the left side of the outer
tub. It is inserted in 2 guides at the rear and held in
place by a single Phillips-head screw at the front.
,E56
.)
.)
To remove the inverter:
1.
Remove the service panel. (See
2.
Press the 4 tabs inward and remove the junction
box cover.
3.
Disconnect the AC and DC input wire harnesses
from the inverter.
4.
Press the lock tab and remove the motor ground
wire.
5.
Remove the plastic wire tie that holds the motor
wiring in place.
6.
Remove the single Phillips-head screw that
holds
the front leg
base pan.
7.
Slide the inverter rearward to clear the guides
that hold the rear of the inverter to the chassis.
8.
Remove the inverter thru the enlarged opening
on the left side of the front frame.
– 46 –
Service Panel
of the inverter to the
(Continued Next Page)
.)
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