Where is the water drainh hole on the Frigidaire FAX054P7A2

SOURCE: Drain Hole for Frigidaire Window Air Conditioner

Leave it alone. DO NOT attempt to create a drain. As long as a window A/C unit is installed properly, (angled slightly down toward the rear) it will drain excess water over the rear lower lip of the unit should it get that high. Many models use some of the collected water/condensation. It gets lifted up by the fan blades to cool the coil.

SOURCE: My frigidaire air conditioner is

The tray that holds the condensed water from the evaporator
may be clogged, it may be clogged before the cleanout hole,
where the tray joins the pvc, if this is the case you may have to
power down your ac unit, there is a panel on your heater unit
that you will have to access to expose the evaporator coils and
you will see the tray where the condensation builds up and flows
thru a pvc pipe to go outside. also make sure that the pipe going
outside is at a slope so that the condensation can flow and not
clog the pipe. make sure that water can flow from the tray thru
the cleanout hole. once you correct the problem. you need to reseal all the seams with duct tape or metalic tape, you can purchase at most hardware stores, to make sure their are no ac
cool air leaks other than thru your ac vents. good luck!