Filter
Top Products
"
Cycle
Troubleshooting
Guide
1.
Trouble
analysis
1.
Check
temperature
difference
between
intake
and
discharge
air
and
operating current.
Temp.
difference
:approx.
0°F
All
amount
of
refrigerant
leaked
Current
:less
than
80%
of
out.
rated
current
Check
refrigeration
cycle.
Temp.
Difference
Temp.
difference
:approx.
a°C(
140F)
I
Refrigerant
leakage
Current
:less
than
80%
of
Clog of
refrigeration
cycle
rated
current
Defective
compressor
Operating
Current
Temp.
difference
:less
than
80C(1
40F)
Current
-less
than
80%
of
Excessive
amount
of
refrigerant
rated
current
Temp.difference
:over8°C(14°F)
Normal
Notice:
Temperature
difference
between
intake
and
discharge
air
depends
on
room
air
humidity.
When
the
room
air
"
humidity
is
relatively
higher,
temperature
difference is
smaller.
When
the
room
air
humidity
is
relatively
lower
temperature
difference
is
larger.
2.
Check
temperature
and
pressure
of
refrigeration
cycle.
Suction
pressure
Temperature
(Compared
with
the
(Compared
with
the Cause
of
Trouble
Description
normal
value)
normal
value)
High
Defective
compressor
Current
is
low.
Defective
4-way reversing
valve
Higher
Normal
Excessive
amount
of
refrigerant
High
pressure
does
not
quickly
rise
at the
beginning
of
operation.
Insufficient
amount
of
Current
is
low.
Lower
Higher
reidgerant(Leakage)
Clogging
Current
is
low.
Notice:
1.
The
suction
pressure
is
usually
56.8-71.0
PSIG
at
normal
condition.
2.
The
temperature
can
be
measured
by
attaching
the
thermometer
to
the
low
pressure
tubing
and
wrap
it
with
putty-
-49-
0