P
ag
e
69
Replace the compressor
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Compressor stuck
R
ef
rig
era
nt
Cir
cuit
Leak test
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Shortage of refrigerant
Replace restricted part
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Restricted liquid line
Clean or replace
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Dirty air filter
Clean coil
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Dirty evaporator coil
Check fan
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Insufficient air through evaporator coil
Change charged refrigerant volume
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Overcharge of refrigerant
Clean condenser or remove obstacle
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Dirty or partially blocked condenser
Purge, evacuate and recharge
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Air or incompressible gas in refrigerant cycle
Remove obstruction to air flow
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Short cycling of condensing air
Remove obstruction in air or water flow
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High temperature condensing medium
Remove obstruction in air or water flow
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Insufficient condensing medium
Replace compressor
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Broken compressor internal parts
Test compressor efficiency
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Inefficient compressor
Replace valve
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Expansion valve obstructed
Replace valve
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Expansion valve or capillary tube closed completely
Replace valve
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Leaking power element on expansion valve
Fix feeler bulb
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Poor installation of feeler bulb
Check heat load
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Heavy load condition
Ot
h
ers
Tighten bolts or screws
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Loosen hold down bolts and / or screws
Remove them
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Shipping plates remain attached
Choose AC of lager capacity or add the number
of AC
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Poor choices of capacity
Rectify piping so as not to contact each other or
with external plate
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Contact of piping with other piping or external plate
