20
6 Common Troubles in Refrigerators and Their Remedies
Causes for troubles occurring in refrigerators are closely related to the
quality of components and workmanship in assembling by manufacturers
as whether refrigerators are properly used and maintained .The parameters
generally
used
to
express
the
working
conditions
of
a
refrigerator
include
the temperature
inside
the
refrigerator
,operation
rate
,electric
power
consumption
,noise
level
,and
other
functional
indexes
.If
any
one
of
these
parameters
is
beyond
its
permissible
range
,this
indicates
that
there is a
fault or trouble in the refrigerator .
During
the
whole
service
life
of
a
refrigerator
,the
probability
of
troubles
occurring
within
a
union
time
is
called
its
failure
rate
.Making
a
comparison
between
the
control
circuit
system
of
a
refrigerator
and
its
refrigerating
system
,we
can
find
that
the
failure
rate
of
the
former
is
higher
,and
that of
the thermostat
is
the
highest .
In Trouble shooting ,the
first
thing
you
must do
is to determine
where
the
trouble
comes
from
the
control
system
or the
refrigerating
system
.There
is
general
no
trouble
indicating
instrument
mounted
on
the
domestic
refrigerator
,locations
and
natures
of
troubles
should
be
determined
according
to
their
respective
features
,therefore
,experience
in
servicing
is
very
important
to
troubleshooting
.Service
technicians
with
rich
experience
can
correctly
locate
them
and
take
reasonable
remedy
measures
based
on
their
comprehensive
analysis
of
trouble
characteristics
as
well
as
operating
conditions for various kinds of refrigerators .
1) Look
a)
Check
the
tubing
of
refrigerating
system
for
cracks
and
various
welding
points
for
leaks
; if
leakage
occurs
,an
oil
stain
can
be
seen
definitely .
b)
Check
the
suction
and
exhaust
pressure
values
(high
pressure and
low pressure) of compressor to
see whether they are normal .
c)
Check
the
conditions
of
frost
attached
to
its
evaporator
and gas
return
tube
.It
is
abnormal
if
frost
has
formed
on
part
of
the
evaporator or
there is no frost attached to
it .
d)
Pay
attention
to
the
speed
of
temperature
drop
inside
freezer
compartment
.It
is
abnormal
if
the
speed
of
temperature
drop
is
obviously
slower than the corresponding normal speed .
e)
Check
the
environment
to
see
whether
it
is
suitable
for
placing a
refrigerator .
f)
Check
refrigerator door seal
,case
,table surface and
heat
insulation
layer .
g) Look at the main control board to ascertain if various indication
states are normal.
Three Essentials for Checkup
Summary of Contents for HRB-271
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