342
AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Low pressure and high pressure too high
Aircon pressure reducer defective
Duct clogged
Low pressure too high and high pressure too low Aircon compressor seal defective
Aircon evaporator sensor defective
Low pressure too low and high pressure too high Aircon pressure reducer jammed
Abnormal levels of pressure
too high
Filtering and drying cartridge obstructed
Duct clogged
Duct clogged
Aircon pressure reducer jammed
Low pressure and high pressure too low
Lack of aircon fluid in the aircon circuit
Aircon compressor defective
Angl.T3-page322-351-2005 4/02/05 15:38 Page 342
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