Hey guys, I have a 2005 6420 and Iím having problems with the a/c.
After a couple hours the air starts gradually getting warmer. It will start out around 40* and go up to above 55*. The suction line will be completely froze over at the low side gauge connection so I assume my evaporator is freezing up as well. I connected my gauges and the readings I got was 10 psi and 160 psi on a 85* day. The compressor will run constantly and not cycle off. Does this system have a low pressure cycling switch, if so where is it located? All I have found is a switch on the high side line after the dryer. Thanks in advance for any help.