The a/c system needs a minimum pressure before the system will run. the system must have a leak so just buying freon may last a day or a few months depending on the size of the leak. also leaking freon into the air is ozone depleating, it should be recovered properly.
the system needs to be recoved of all freon. vacuum to -30psi held checked for leaks. (uv dye or nitrogen and soapy water). leaks fixed. vacuum to evacuate moisture and air. refilled with proper amount of freon (too much or too little make the air not as cold).
it's low on freon. add it in slowly until the comressor stays on. then keep adding until the vent temp gets cold. if it starts to get warm when adding you have to remove some. pressure should be something like 30psi low side 180 high side. there may be air in your system so it may never be really cold.
×
867 views
Usually answered in minutes!
the pressure is 65 when the compressor is not on. then drops to 15 when it kicked on. does it need freon?
×