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Replace the compressor
Compressor stuck
R
e
fr
ig
e
ra
n
t C
ir
cu
it
Leak test
Shortage of refrigerant
Replace restricted part
Restricted liquid line
Clean or replace
Dirty air
fi
lter
Clean coil
Dirty evaporator coil
Check fan
Insu
ffi
cient air through evaporator coil
Change charged refrigerant volume
Overcharge of refrigerant
Clean condenser or remove obstacle
Dirty or par
�
ally blocked condenser
Purge, evacuate and recharge
Air or noncodensable gas in refrigerant cycle
Remove obstruc
�
on to air folow
Short cycling of condensing air
Remove obstruc
�
on in air or water
fl
ow
High temperature condensing medium
Remove obstruc
�
on in air or water
fl
ow
Insu
ffi
cient condensing medium
Replace compressor
Broken compressor internal parts
Test compressor e
ffi
ciency
Ine
ffi
cient compressor
Replace valve
Expansion valve obstructed
Replace valve
Expansion valve or capillary tube closed completely
Replace valve
Leaking power element on expansion valve
Fix feeler bulb
Poor installa
�
on of feeler bulb
Check heat load
Heavy load condi
�
on
O
th
e
rs
Tighten bolts or screws
Loosen hold down bolts and / or screws
Remove them
Shipping plates remain a
�
ached
Choose AC of lager capacity or add the number
of AC
Poor choices of capacity
Rec
�
fy piping so as not to contact each other or
with external plate
Contact of piping with other piping or external plate
P
a
g
e
6
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