497 / 745
HVAC
45
Low Pressure side
in kg/cm
2
( M Pa)
High Pressure side
in kg/cm
2
( M Pa)
Remarks
Symptoms
Possible rea-
sons
on high pressure
side is low.
2.5- 3.5
( 0.25 –
0.35)
20-25
( 1.95-2.45)
System pressure
is high.
Only Insufficient
cooling.
Excessive refrig-
erant in the
system causing
insufficient con-
denser cooling.
Insufficient cool-
ing with low
pressure piping
will be hot.
Air has entered
the system.
In sufficient cool-
ing with frost or
large amount of
dew on low pres-
sure piping
TXV valve faulty.