Universal Chilling Systems, LLC.
8
Manual
Model 10
Air Cooled Chiller
6.
Troubleshooting
Troubles
Causes
So
l
utions
Cannot
start
1. Power
supply is
not available
or
voltage too low
1. Clear the electrical trouble
,
and
provide the
power supply
on
requirement
2.
Wrong
Temperature
set
,
the
contactor
is
always
off
2. Make
correct
temperature set
3. Over load protection not recovered
after cut off
3. Press the recovery button
High
pressure too
high
1.
Too
dirty of the condensers
1. C
lean the condensers
2.
Too
much
refrigerant
filled
2. D
ischarge some refrigerant
3.
The
expansion
valve
opens too small
3. A
djust the opening of the
valve
Low
pressure too
low
1.
Too
little of the refrigerant.
1.
Leakage
check
,
in
c
rease refrigerant
and
adjust the valve
2. Blockage of the filter.
2. Clean or change the filter
3
.
The e
x
pansion valve opens too small
3. Adjust the opening of the valve
Frosty
of suction
line
and/or
compressor
1.
The
expansion valve opens too
large
1. Adjust
the
opening of
the
valve
2. Too
much
refrigerant filled
2. Discharge some refr
i
gerant
3.
Load
too smal
l
3. I
ncrease
the
load
