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Air Conditioning System Does Not Operate
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Heater fan motor 15A fuse
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Replace fuse.
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Air conditioner compressor relay
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See your authorized dealer.
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Heater fan speed switch
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See your authorized dealer.
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Heater fan motor
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See your authorized dealer.
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Condenser fan motor
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See your authorized dealer.
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A/C on/off switch
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See your authorized dealer.
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Freeze control switch
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See your authorized dealer.
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A/C pressure switch
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See your authorized dealer.
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A/C compressor clutch
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See your authorized dealer.
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Wiring harness
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See your authorized dealer.
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| Symptom |
Problem |
Solution |
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Air Conditioner Does Not Cool Interior of Cab
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Cab air filter clogged
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Cleaner or replace filter.
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Condenser fins clogged with debris
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Clean condenser fins.
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Compressor belt loose
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Check belt tensioner.
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Refrigerant hose kinked, pinched or collapsed
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See your authorized dealer.
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Heater or evaporator coil fins clogged with dirt or dust
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Clean heater or evaporator coil fins.
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Blower motor malfunctions or operates too slowly
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See your authorized dealer.
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Compressor belt slipping or malfunctions
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See your authorized dealer.
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Warm outside air leaking into cab
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See your authorized dealer.
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Heater valve remains open
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See your authorized dealer.
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System refrigerant (R134A) charge low
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See your authorized dealer.
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Evaporator fins frosting or freezing
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See your authorized dealer.
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Air Conditioner Runs Constantly, Too Cold
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Freeze control switch capillary tube not positioned in evaporator properly
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See your authorized dealer.
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Compressor clutch engaged constantly
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See your authorized dealer.
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Interior Windows Continue to Fog
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Cab air filter clogged
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Clean or replace filter.
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A/C system OFF
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Turn A/C ON/OFF switch ON.
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