Author	[Modern View]
steveinohio 10-25-2012 06:30:16 75.60.187.30 Report to Moderator	I had my air conditioning compressor and dryer switched to R134A the first week in September and it had cold air as expected. When I tried using a couple of days ago no cold air was felt. I can see the compressor is not turning when the switch is turned on to "cold" and making sure the heater switch is off. I checked the fuse and it's okay. Where do I want to start next? A new cab switch? Could it be the connection at the compressor? Any assistance is greatly appreciated. [Reply]   [No Email]
tjiniowa 10-27-2012 05:41:47 63.152.60.77 Report to Moderator	Re: JD 4400 air conditioning not working after conversion in reply to steveinohio, 10-25-2012 06:30:16   If it is not low on freon, then jumper wire the compressor and see if the clutch is ok before you get into it much further [Reply]  [No Email]
Karl in MD 10-26-2012 08:26:34 167.102.133.216 Report to Moderator	Re: JD 4400 air conditioning not working after conversion in reply to steveinohio, 10-25-2012 06:30:16   If it has Gates hoses, there is a chance that the mold release agent in the hoses reacted with the oil in the r-134, and left a coating on the inside of the evaporator, insulating it and preventing heat transfer. This happened a bunch of times when I worked for Deere in the 90"s when a lot of systems were changed over. We had to flush the systems and recharge them. [Reply]  [No Email]
tomNE 10-25-2012 20:07:19 75.234.172.181 Report to Moderator	Re: JD 4400 air conditioning not working after conversion in reply to steveinohio, 10-25-2012 06:30:16   there is sometimes a problem with the new low pressure valves. they sometimes don't seal up properly. [Reply]  [No Email]
john deere haverstor guy 10-25-2012 06:36:08 66.82.20.123 Report to Moderator	Re: JD 4400 air conditioning not working after conversion in reply to steveinohio, 10-25-2012 06:30:16   Check and make sure your freon didnt leak out. Thats usely the culprit when a compresser wont kick in. You might have a leak somewhere. [Reply]  [No Email]
steveinohio 10-25-2012 14:19:10 75.60.201.11 Report to Moderator	Re: JD 4400 air conditioning not working after conversion in reply to john deere haverstor guy, 10-25-2012 06:36:08   I"ll check on the freon in the system; I"d be surprised if it leaked out as I never had a problem with leaks before but there is always a first time. Also, there is a thermal switch and an air conditioning temperature control switch. Could one of these be malfunctioning and needed replaced? [Reply]  [No Email]