Cab Climate Control - Troubleshooting - New Holland T4.75F Operator's Manual

Cab climate control - Troubleshooting

Problem
Dust in cab
Poor recirculation air
Air−conditioning not
cooling properly
8 - TROUBLESHOOTING
Possible Cause
Filter seal ineffective
Filter clogged
Filter defective
Excessive air draughts
Filter clogged or air circulation filter clogged Clean or replace filter(s)
Heater or humidifier radiator core clogged Call your Dealer
Condenser clogged
Refrigerant low
Compressor belt slips or is damaged
Heating on
Check condition of filter seal
Clean or replace filter
Replace filter
Block draughts
Clean the radiator, oil exchanger and con-
denser
Check the glass port to see if there are bub-
bles visible. Call your Dealer
Check the automatic belt−tensioning de-
vice and the state of the belt
Turn
anti−clockwise for maximum cooling
8-9
Correction
the temperature control fully