GE PDW8900 Series Technical Service Manual page 25

The door panel must be removed to access the control module. (See
Door Panel.)
The main control is
' = -.
considered a "smart" control, capable of learning the water temperature and turbidity characteristics of the
home.
It is
normal for
the cycle
times to vary over a period of time from the factory default settings
due
to
temperature and water quality.
The
control module
is
held
in
place by a single screw that secures the module to the right side
of
the inner
door panel. (The screw is located on the outside of the inner door panel.)
The module cover is held in place by 5 tabs (see arrows).
Control Module Board
/\\
Note:
When replacing
the control module,
always run the Factory
Test
Mode
to calibrate
the keypad membrane
and turbidity sensor to
the control board.
J 1 - Power Supply
X
J2
-
Heating Element, Circulation Pump, Drain Pump, Fan, Water Valve,
Detergent Module, Wax Motor, Bulk Detergent Pump
J3 - TurbidityITemperature Sensor
J4 - Detergent Sensor
, -
J5 -Active Vent
J7 - Keypad
J8 - 3-Digit Display
JlO
- PQA