Abnormal Phenomena - Haier FMM350HSBSY0 Service Manual

9-2. Abnormal phenomena

9-2-1. Compressor doesn't start
Com pressor
doesn' t start
Y
Whether lighting
and display system is
normal
Y
W hether the
grade of thermostat is
on 0
N
W hether the
resistance of com pressor is
infinite or 0
N
W hether the
starting current is
about 5A
N
W hether PTC starter 抯
resistance between running jack
and starting jack is 16-50 O
Y
Measure whether
two ends of heat protector
is through
Y
Whether the finger
of multimeter swing to 0 quickly
and then swing back slowly
when measuring two
poles of capacitance
Y
W hether
compressor 抯 pin is tight,
contact
is good
Y
W hether input
and output voltage of main
control board is norm al
Y
W hether each
contact of main control board
is normal
Tighten each
contact and test m achine
again
N Trouble of lighting and display system
Y Adjust the grade according to fact
Compressor is open circuit or short
Y
circuit
Y Inner trouble of compressor
If it is infinite or 0, then the starter is
N
out of work.
N Heat protector is out of work
N Capacitance is out of work
N Insert again, electrify and test
N Main control board is out of work
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
20