USER GUIDE
System Diagnosis Guide 1
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System Diagnosis Guide
REFRIGERATION SYSTEM DIAGNOSIS GUIDE
System
Condition
Suction
Pressure
Suction
Line
Compressor
Discharge
Condenser
Capillary
Tube
Evaporator
Wattage
Normal
Normal
Slightly below
room
temperature
Very hot
Very hot
Warm
Cold
Normal
Overcharge
Higher than
normal
Very cold may
frost heavily
Slightly warm
to hot
Hot to warm
Cool
Cold
Higher than
normal
Undercharge
Lower than
normal
Warm-near
room
temperature
Hot
Warm
Warm
Extremely cold
near inlet -
Outlet below
room
temperature
Lower than
normal
Partial
Restriction
Somewhat
lower than
normal vacuum
Warm - near
room
temperature
Very hot
Top passes
warm - Lower
passes cool
(near room
temperature)
due to liquid
Room
temperature
(cool) or
colder
Extremely cold
near inlet -
Outlet below
room
temperature
backing up
Lower than
normal
Complete
Restriction
In deep
vacuum
Room
temperature
(cool)
Room
temperature
(cool)
Room
temperature
(cool)
Room
temperature
(cool)
No refrigeration
Lower than
normal
No Gas
0 PSIG to 25"
Room
temperature
(cool)
Cool to hot
Room
temperature
(cool)
Room
temperature
(cool)
No refrigeration
Lower than
normal
45
