104
Rev 4/2018
Symptom Problem Solution
System will not produce
sufficient cooling
Continued.....
Restriction in receiver/dryer Contact your Freeman dealer.
Compressor shaft seal leaking Replace the compressor shaft seal.
Excessive moisture in system,
causing expansion valve freeze
up
Drain and recharge. Replace
receiver-dryer.
Clogged cab roof inlet panel Remove and clean.
Evaporator fins clogged Blow out evaporator fins with
compressed air.
Too little refrigerant in system Recharge system.
Clogged screen in receiver-dryer Discharge system, replace
receiver-dryer. Then evacuate and
charge system.
Excessive moisture in system Discharge system; replace
receiver-dryer. Then, evacuate and
charge system.
Air in system Discharge, evacuate, and charge
system.
Hissing noise at expansion
valve
Loss of refrigerant Check sight glass for bubbles and
system for leaks. Contact your
Freeman dealer.
Restriction in refrigerant system Check for kinks in hoses.
Check receiver-dryer for uniformity
of temperature. If temperature is
not uniform, contact your Freeman
dealer.
Partial frosting and sweating
of lines combined with poor
cooling
Loss of refrigerant Check sight glass for bubbles and
system for leaks. Contact your
Freeman dealer.
Restricted or clogged liquid line Contact your Freeman dealer.
Expansion valve malfunctioning Contact your Freeman dealer.
AIR CONDITIONING
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