Basic Wash Cycle; Operation Overview - GE Profile PTWN8055MMS Technical Service Manual

Basic Wash Cycle

Note: See
Component Locator Views
and location of washer components.
After a load is placed in the basket, the user selects
the appropriate wash cycle and presses START.
Cycle time and wash patterns will vary depending
on user time adjustments, soil level adjustments,
fabric type, and wash-load weight.
Dry Load Sensing
Before an initial fi ll, the infusor rotates the dry
clothes load. This rotation is controlled by the power
board. The power board measures the amount of
time it takes for the motor to coast to a stop. The
larger the clothes load, the less momentum the
motor is capable of generating, so the faster it will
stop. The infusor will rotate back and forth up to
4 times. This information is used to determine the
initial water fi ll level.
Water Fill
The washer automatically fi lls to the proper
level based on the load sensing measurements.
Depending on the cycle chosen and the quantity
of clothes, there are 27 possible water levels. This
information is stored in memory for the fi nal rinse at
the end of the wash cycle. Water levels are matched
to load size using approximately one-third less
water than typical top load washers.
Note: The washer can use as little as 16 gallons of
water for small loads and has an average water use
of 24 gallons per load.
Wet Load Sensing
After the fi rst fi ll, the infusor and basket lock
together and rotate to measure the clothes load.
During this time, the motor momentum is measured
again. The washer compares this information to
the previous dry load sensing measurements and
determines if additional water is required.

Operation Overview

Wash Water Temperature
During the fi ll, the washer monitors and regulates
for identifi cation
wash water temperatures within 5°F (-15°C) of the
target temperature. This accuracy is achieved using
a thermistor located in the outer tub. The thermistor
monitors the tub water temperature during the fi ll
cycle.
Based on information received from the thermistor,
the power board controls the hot and cold inlet
valves to achieve the desired wash temperature.
(See
Target Water Temperatures:
Sanitize - 140°F (60°C)
Hot - 120°F (49°C)
Warm - 95°F (35°C)
Cold - 65°F (18°C)
During the fi ll, the basket slowly rotates in a
clockwise direction. This action mixes the detergent
and water to assure proper distribution and assure
the thermistor is reading an accurate basket water
temperature.
Tidal Wave Wash
The infusor and wash basket lock together and
rotate clockwise and then counterclockwise at
230 RPM. This action mixes the detergent and
water while distributing the clothes evenly in the
wash water. The basket wash speed is based on
fabric type and load size. Delicate fabrics are gently
rotated while heavier fabrics are rotated more
vigorously.
Centrifusion Wash
The locked infusor and wash basket begin a
clockwise spin (fi gure 1). The speed of the spin is
customized to the load type and fabric type. As the
basket spins faster, it creates a strong fl ow of water
under the centrifugal force (fi gure 2).
– 11 –
Thermistor/ATC Control (Auto Temp
.)
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