Troubleshooting Display Problems - Maytag MFR Series Service Manual

TROuBleSHOOTinG DiSplay
pROBleMS
1. If the display is illuminated, and the washer
will not start, look at the 3-wire power
connector at P1 on the control board.
Looking at it from the side of the washer,
the gray wire is to the right, the yellow is in
the center and the white to the left. If this
harness is plugged in upside down, the
board would light up but there would be a
communication error and the washer would
not work properly.
Control
Board Fuse
2. If the display will not illuminate, and the 3-
wire power connector is correctly installed
with proper voltage at the connector, check
the control board fuse.
3. If the display is still not illuminated check
display power input at Anode & Cathode on
the control board.
4. If the display is still not illuminated it could
be an incorrect, missing or improperly
installed chip on the control board.
P1 Power
Connector
Anode &
Cathode
5. If the display is still not illuminated, remove
the control board (See page 4-5). Remove
four #1 star head screws from the back
of the control board that hold the display
in place. Disconnect the display power
connector at Anode & Cathode. Lift display
off control board to visually inspect display
pins and pin connector.
Display Pin
Connector
6. If the PWR ON LED on the top of the
control board is lit it indicates the control
board is receiving power.
8-11
Control
Board
Display Pins
Power On
LED