I have cool air. But my Bryant air handler model FA4ANF042 is gushing water out of a port just above the drainage pipe connection (see photo). The hole, where the water is coming from, seems to be threaded as to connect with a water hose or something. But there are two such holes positioned vertically (see blue plastic cap in picture). Note that my drainage system involves a 30' PVC pipe embedded in the garage's concrete floor
I suppose that one of these two holes is intended to connect a garden hose and apply water pressure to unclog the drainage system. But which one is it? The bottom hole is mostly obstructed by the PVC drain pipe. I could not attach a hose to it without cuting off the PVC drain connector. I don't want to put the whole unit out of commission for the sake of a water leak.
Otherwise what is the standard procedure to flush the drainage system?
Can you help?