Daewoo BM090, Manual

Page: 90 / 261

88
Troubleshooting & Remedy
1. Check sheet for trouble & remedy
Refrigerant Condenser Evaporator Compressor Expansion Refrigerant circulation
Others
CAUSES
system system system system valve system Others
APPEARANCE
Press
system
Comp
system
Others
Strange high of high-press
Strange low of high-press
Strange high of low-press
Strange low of low-press
No maintain the vaccum
No pumping down
serious noise
Bubbles in sight
glass very much
Refrigerant circula-
tion is stopped
No flow of cooling air
Poor cooling air flow
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
Badness
of
cooling
air
duct
Lose
belt
for
cooler
High-pressure
side
is
closed
Low-pressure
side
is
closed
Half
opened
of
discharge
control
V/A
Closed
receiver
control
V/A
Closed
dryer
strainer
Dusts
&
w
ater
are
m
ixed
So
closed
So
opened
Bad
joint
part
of
temp
sensor
box
Multifuction Too
little
oil
Too
m
uc
ho
il
Compress
the
liquid
Damage
of
V/A
plated
Damaged
or
removed
bearing
Breakage
of
head
packing
Leakage
of
suction
V/A
Leakage
of
discharge
V/A
No
rotating
fan
Dirty
air
filter
Be
frosted
Closed
a
ll
fin
The
tem
po
fc
oolin
gw
indi
ss
ol
ow
No
rotating
fan
Closed
a
ll
fin
The
temp
of
coolin
gw
indi
ss
oh
igh
Water
c
ontainded
Air
m
ixed
No
refrigerant
Full
refrigerant
Over-charged
refrigerant
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