with a set of freon guages. The smaller copper pipe should be warm to hot. The larger copper pipe should be cold and in hot humid weather dripping water from condensation. what should the guages read.
how do you check freon on central ac and what should the guages read.
Check the Freon pressure first. The AC compressor will not turn on if the Freon pressure is too low.
Look to see if the compressor is running when the ac is on. If not, then check the Freon pressure, as the compressor won't run if the Freon is low.
Freon is added through the low side ac port. A gauge is recommended to check the Freon pressure, as too low or too high pressure can cause the ac not to work properly.
remove freon,pressure up system with dry nitrogen to 250psi & go over it all with soap & water .
Check the low and high pressure switches, the AC fuse, and relay. Any of these can cause the AC to not get power to the clutch as if the freon is too low.
With AC pressure gauges and manifold assembly. This is best done by a professional.
The ac system may be low on Freon. Check the pressure with a gauge. If the pressure is ok then check the ac relay, as they can be intermittent.
Start out by checking the freon levels and if that is okay then check the pressure switches and the wire harness to the clutch....
Check the freon level and if that's good, then the system might not be pressurized, there has 2 be pressure, and a shop has to do that for you, unless you have the equipment yourself
Freon is added in the low pressure port of the ac system. It is under the hood close to the ac drier.
Freon is added through the ac low pressure port. The port is located on the aluminum pipe on the ac line.