Blower not keeping dust out of operator enclosure
Check seal condition
Check filter for correct installation
Defective filter
Replace filter
Excessive air leak
Seal air leaks
Blower air flow too low
See Blower Air Flow Too Low
Clean
Heater core or evaporator core clogged
Heater will not shut off
See your John Deere Dealer
Air conditioner not cooling
Check charging circuit. See CHECKING AIR CONDITIONING SYSTEM in the General Maintenance and Inspection Section
Low refrigerant
Check sight glass. (If Equipped) See CHECKING AIR CONDITIONING SYSTEM in the General Maintenance and Inspection Section
Belt slipping
Check belt tension
Heater switched on
Switch heater off
Compressor stuck
Rock compressor pulley back and forth
Intermittent cooling
Clean side screens, radiator and oil cooler condenser. See CHECKING AIR CONDITIONING SYSTEM in the General Maintenance and Inspection Section
Seat suspension not working
Replace fuse
Radio does not function
Intermittent or poor radio reception
Replace radio spring antenna
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