What does it mean when your AC lines are hot?
AC liquid lines can become very hot if there is a problem with the condenser, such as it being dirty, or not working properly. Clean your condenser, and if the problem continues you may need to replace it or troubleshoot further. If your liquid line is very hot, instead of warm, then there could be a problem.
Should my AC line be hot?
A normal temperature would be around 90-to-100F. But if there was a problem (such as an overcharge, a defective outdoor blower, a very dirty outdoor coil, etc.), pressure inside the lines will be higher than normal, and as pressures get higher the temperature of the refrigerant inside gets higher as well.
Is one AC line supposed to be hot?
When the system is operating, the large insulated suction line should be cold to the touch and sweating at any point where there is no insulation. The smaller uninsulated liquid line should be warm to the touch after the system has been operating for 10 or 15 minutes.
How does a Freightliner air conditioner system work?
Freightliner AC systems are much larger than most vehicle systems, and they use a larger condenser and an air compressor to cool the air. An evaporator is used on freightliner trucks as a heat exchange medium to move the heat generated by the system away from the air conditioning unit.
How to troubleshoot a / C problems in Freightliner Trucks?
A specially trained mechanic should fix any problems with the AC system, but you can troubleshoot to verify that there is a problem. Turn the engine on and allow the truck to warm up to its normal operating temperature. The water temperature gauge needle should sit in the center of the upper and lower marks on the gauge.
What does an evaporator do on a Freightliner truck?
An evaporator is used on freightliner trucks as a heat exchange medium to move the heat generated by the system away from the air conditioning unit. The most common problem with a freightliner AC system is a leaking compressor.
Why does my Freightliner engine keep getting warm?
Freightliner trucks normally have a water temp gauge in the center of the dash-making it easy to know when your truck’s engine is warm. The reason for failure on freightliners is almost always a leak in the compressor due to a failure at the cooling line to air compressor seal.