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Troubleshooting
Page 78
Compressor stuck
Shortage of refrigerant
Restricted liquid line
Dirty air filter
Dirty evaporator coil
Insufficient air through evaporator coil
Overcharge of refrigerant
Dirty or partially blocked condenser
Air or incompressible gas in refrigerant cycle
Short cycling of condensing air
High temperature condensing medium
Insufficient condensing medium
Broken compressor internal parts
Inefficient compressor
Expansion valve obstructed
Expansion valve or capillary tube closed completely
Leaking power element on expansion valve
Poor installation of feeler bulb
Heavy load condition
Loosen hold down bolts and / or screws
Shipping plates remain attached
Poor choices of capacity
Contact of piping with other piping or external plate
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Replace the compressor
Leak test
Replace restricted part
Clean or replace
Clean coil
Check fan
Change charged refrigerant volume
Clean condenser or remove obstacle
Purge, evacuate and recharge
Remove obstruction to air flow
Remove obstruction in air or water flow
Remove obstruction in air or water flow
Replace compressor
Test compressor efficiency
Replace valve
Replace valve
Replace valve
Fix feeler bulb
Check heat load
Tighten bolts or screws
Remove them
Choose AC of lager capacity or add the number
of AC
Rectify piping so as not to contact each other or
with external plate
Refrigerant Circuit
Others
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