We are reviewing some possible problems you may see in the field on a 3 Ton condensing unit. Checking your Super Heat and your Sub Cooling will let you know if you are having a problem with your metering device (if using a T XV)
New condenser installations with nitrogen holding charge. Always remove nitrogen before charging system. Nitrogen is a non-condensable and will not condense to a liquid. Always read your unit tag before installation to see if it has a holding charge of dry nitrogen.
How to read a pressure temperature chart (PT Chart) on a central air conditioner. This will tell you the evaporator and condenser temperature, also sub cooling and superheat
This video will look at a 532A-036KA Miller Central Air Conditioner that has the following problems: Constantly runs but does not cool, Running non stop
