On the Amana comfort zone air conditioner, there is a switch that says exhaust closed. Do I want the exhaust open or closed when i have the cool on the air conditioner

I think that just controls a little flapper that opens to the outside. I saw something like that on an a/c unit about 3 days ago. Lets fresh air in.

Sometimes they leak and need to be recharged. There are other things to check first. #1 being filters. Then make sure your coils are clean, inside coil and outside coil. If all is well then you will have to get someone to check the system pressures to determine if it needs to be charged.

Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.

The condensate drain line is clogged, causing the condensation water to overflow. You can use a shop vac to clear the line. attatch it to the outlet side of the line. also clean out the condensate drain pan located at the bottom of the indoor coil.

is it a split system? majority of problems, lets say 95% occur during install, u may have a leak! A pinhole at that, but maybe installer missed it, your out of labor warranty, call a 3rd party contractor and have them inspect it!

Power coming from circut board? If yes, check the capacitor. Low voltage fuse good? Transformer good?

Check air temp out vent should be approx 20 degrees colder than room temp if it is your unit is too small for the amount of space you are cooling.Rule of thumb 1 ton(12,000btu's) for every 400 sq ft of uninsulated space

Is the blower running? Sounds like unit is tripping out on high limit safety switch.

There is a capacitor connected to the motor on the compressor. If it fails, the motor won't start and the safety thermal cutoff will stop voltage at the motor terminals. There are fuses inside the power interrupt box on the side of the outside unit. One of them may have blown

Yes, the reversing valve has a separate coil. some energize on cool mode, some on heat mode. Has the thermostat been replaced? I find this a common mistake.