GE PFWS4400L0, Technical Service Manual

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Inverter
The inverter receives commands from the control
board and controls motor operation. 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.
To check the inverter:
1. Remove the service panel. (See Service Panel .)
2. Enter test mode t04, t13, or t14. (See Service
Test Modes.)
3. Check for 120 VAC between the blue/brown and
blue wires (pins 1 and 5) at P3 on the inverter.
4. Check for 12 VDC between the purple and
brown wires (pins 1 and 3) at P2 on the inverter.
Note: 120 VAC and 12 VDC are only present at the
inverter when the power board runs the motor.
5. Unplug washer, then check motor resistance.
(See
Motor Assembly
.)
6. If 120 VAC and 12 VDC are present and the
motor resistance is correct, replace the inverter.
Note: If the inverter overheats, the washer stops for
5 minutes.
Speci fi c failures associated with the inverter can
initiate error codes E3, E17, and E22 thru E25. (See
Error Codes .)
To remove the inverter:
1. Remove the service panel. (See
Service Panel
.)
2. Remove the single Phillips-head screw that
holds the inverter to the base pan.
3. Slide the inverter rearward to clear the guides
that hold the rear of the inverter to the chassis.
4. Disconnect the 3 wiring harnesses from the
inverter.
5. Cut the 2 wire ties off the inverter housing.
Disconnect
Disconnect
Disconnect
6. Remove the wire tie from the back of the
inverter housing.
Note: You may remove the wire tie from inside the
inverter housing after completing step 8 if a spare
wire tie is not available.
7. Remove the 2 Phillips-head screws from the
front inverter bracket.
8. Pull out the inverter board from the housing.