Have a older cruisaire split system. Does the compressor have a thermal shutdown. After running for 6 to 8 hours in a hot engine room it quit cooling, fan was still running. after sitting all night it ran fine the next day. Any help appreciated.
Don't place too much focus on the fact that it's in a hot engine room, that's not enough to trip the internal temperature switch. More than likely you have a low charge condition, not low enough yet to cause it to stop cooling, but enough that it's not cooling the compressor adequately. The refrigerant serves multiple functions- it provides the heat transfer to remove heat from the space, it carries oil along on its cycle through the system to lubricate the mechanical components, the most important of which is the compressor, and it also cools the compressor as it circulates through the windings of the motor.Have a older cruisaire split system. Does the compressor have a thermal shutdown. After running for 6 to 8 hours in a hot engine room it quit cooling, fan was still running. after sitting all night it ran fine the next day. Any help appreciated.