GE PFWS4600L0, Technical Service Manual, Page: 37 / 67

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Water Level Control
The water level control is installed on the top brace
on the right side of the cabinet. The water level
control is connected by a hose to an air chamber
attached to the bottom of the outer tub. The water
level control consists of 3 internal switches that
monitor 4 water level conditions.
• When the water level rises in the outer tub, air is
trapped in the air chamber.
• As the water level rises, the air pressure in the
air chamber increases.
• The increased air pressure initiates operation of
the 3 internal switches.
• The washer has over fl ow protection and will
automatically pump out regardless of whether
the washer is on or off, as long as the unit is
plugged in. This action supersedes all other
commands.
• The 3 internal switches are identi fi ed as foam,
main, and over fl ow. The 4 water level conditions
monitored are empty, foam, main, and over fl ow.
Level Switch Position
Foam Main Over fl ow
Empty Closed Open Open
Foam Open Open Open
Main Open Closed Open
Over fl ow Open Closed Closed
Water Levels
The foam water level is approximately 1
1
/
2
inches deep measured behind the baf fl e and
approximately 1/2 inch deep measured at the
bottom center of the wash basket.
Foam Water Level
The main water level is approximately 3 inches deep
measured behind the baf
fl e and approximately 1
3
/
4
inches deep measured at the bottom center of the
wash basket.
(Continued Next Page)
Main Water Level
Water Level Control Operation
When the machine is empty, the foam switch is
closed and the motor circuit is disabled. When the
main wash cycle is activated, the
fi ll valve begins
operating. The machine fi lls to the foam water level,
the foam switch opens, and the tub rotates. Water
temperature is read by the thermistor, and the
fi ll
valve percentage of operation (water tempering) is
calculated for the main wash. When calculated, or
when the load absorbs water, the tumbling pauses.
Water
fi lls the tub until the main water level is
reached (adaptive fi ll), then the main switch closes,
and the main wash tumbling begins.