13
System
Suction
Suction
Compressor
Condenser
Capillary
Evaporator
Wattage
Condition
Pressure
Line
Discharge
Tube
Normal
Normal
Slightly below
Very hot
Very hot
Warm
Cold
Normal
room
temperature
Overcharge
Higher than
Very cold
Slightly warm
Hot to warm
Cool
Cold
Higher than
normal
may frost
to hot
normal
heavily
Undercharge
Lower than
Warm - near
Hot
Warm
Warm
Extremely cold
Lower than
normal
room
near inlet -
normal
temperature
Outlet
below room
temperature
Partial
Somewhat
Warm - near
Very hot
Top passes
Room
Extremely cold
Lower than
Restriction
lower than
room
warm -
temperature
near inlet -
normal
normal-in
temperature
Lower passes
(cool) or
Outlet
vacuum
cool
colder
below room
(near room
temperature
temperature)
backing up
due to liquid
Complete
In deep
Room
Room
Room
Room
No
Lower than
Restriction
vacuum
temperature
temperature
temperature
temperature
refrigeration
normal
(cool)
(cool)
(cool)
(cool)
No
0 PSIG
Room
Cool
Room
Room
No
Lower than
Gas
to
temperature
to
temperature
temperature
refrigeration
normal
25"
(cool)
hot
(cool)
(cool)
Refrigeration System Diagnosis Guide