20
9-2. Abnormal phenomena
9-2-1. Compressor doesn’t start
Com pressor
doesn
’
t start
Whether lighting
and display system is
normal
W hether the
grade of thermostat is
on 0
W hether the
resistance of com pressor is
infinite or 0
W hether the
starting current is
about 5A
W hether PT C starter
抯
resistance between running jack
and starting jack is 16-50 O
Measure whether
two ends of heat protector
is through
Whether the finger
of multimeter swing to 0 quickly
and then swing back slowly
when measuring two
poles of capacitance
W hether
compressor
抯
pin is tight,
contact
is good
W hether input
and output voltage of main
control board is norm al
W hether each
contact of main control board
is normal
T ighten each
contact and test m achine
again
Y
Trouble of lighting and display system
Adjust the grade according to fact
Compressor is open circuit or short
circuit
Inner trouble of compressor
If it is infinite or 0, then the starter is
out of work.
Heat protector is out of work
Capacitance is out of work
Insert again, electrify and test
Main control board is out of work
C
h
a
n
g
e
fo
r a
n
e
w
c
o
m
p
re
s
s
o
r
Y
N
N
N
Y
Y
Y
Y
Y
N
Y
Y
Y
N
N
N
N
N
Com pressor doesn
’
t start
som etimes because the
temperature in case is
between starting and stop
tem perature , should pay
attention when do test
Adjustm ent of therm ostat
Tem perature of
environm ent
>30
℃
1-3 grade
16-30
℃
3-5grade
<16
℃
5-7grad
Содержание FMM350HSBSY0
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