The air conditioning in my T4050 hasn't been working for some time. Only thing I know so far is that the compressor does not even start. A few years ago when we had the problem I think the dealer replaced something up in the ceiling. Anyone have ideas of what that could have been or what to check first?
New Holland T4050 air conditioning not working
- Thread starter cecil55
- Start date
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Tx Jim
New Member
Ok I'm not familiar with your model of tractors AC system but most AC systems are similar. If dealer replaced a part in ceiling of cab I'd guess replaced part was relay. One easy thing to do is install manual coolant shut off valve in heater hose. Coolant control valves on tractors with a cab have a long history of leaking coolant through shut off area. Is radiator, condensor, evaporater, cab filters very clean? With ign switch & AC switch in on position check for voltage with VOM or test light on AC clutch engagement wire. If no voltage is present on AC clutch wire with both switches in on position then briefly connect a wire from battery positive post to AC clutch wire & listen for "click of compressor clutch". If clutch will engage the next thing you will need AC gauges to be attached too determine if AC system has correct amount of refrigerant.
fruitcakesa
Veteran Member
The heater valve in my M6040 failed open and the AC and fan only blew hot air.
I installed a ball valve on a heater hose under the seat area and can easily switch it over through an access panel nesrby.
Just turned it off for the season and have working AC again.