Troubleshooting guide

SEGTION
2
THEORY
OF OPERATION
INTRODUCTION
The HFand HEt Front-Loading
Automatic
Washers
present
a number of
new features
and
operating
characteristics
quite
different from
previous
models.
In
addition to the
introduction
of front-loading
operation, the HF and HEt
contain a number
of unique operating
features
designed to increase
clothes
cleaning ability while
offering
very
high water
and energy
conservation.
Water
System
The HFandHFt water
system
consists of the hot and cold water
inlet valves,
a
water
temperature
sensor, a water flowmeter
and control and the
dispenser
distribution system along with a
traditional
pressure
switch.
Water Inlet Valves
-
The hot
and cold
water inlet valves
are located
at the back of the
washer. These valves receive
a control
signalfrom
the Central Control Unit to manage
the temperature of
incoming water. The
temperatures
are determined
by the specific wash cycle
selected and a temperature
sensor located in
the wash tub.
To improve
cleaning of heavily
soiled clothing and to
provide
a sanitizing
feature,
the water
tempera-
ture can
be
increased
through the use of a heating
element
located in the bottom of the tub,
(HFt
model
only).
Flowmeter
Water flow,
or the
quantity
of water introduced
throughout
any cycle is monitored
by a
flowmeter
and Central Control
Unit. When the flowmeter registers
a maximum of 10.5
gal.
(40
L), and
the Central Control Unit has not
detected the
pressure
switch trip, the
water
valves will
be shut off and an
error code will
show
in
the digital display.
Dispenser
Distribution
System
All
wash and rinse water is introduced into
the wash tub through a
Dispenser Distribution
System lo-
cated in the top left
corner of the
washer.
The system consists of a
motor that
turns a cam
gear.
The cam
follower willdivert
the
incoming
water to one
or
more
ol
the follow water
inlet modes:
.
Detergent Dispensing
.
Bleach Dispensing
.
Fabric
Softener Dispensing
.
Rinse Dispensing
(no
additives)
Gam Follower-->'a
Fig.2-2
Dispenser
Motor
Fig.2-1
2-1