I have a carrier split system that is approx. 10 years old and it has started to leak water from the evaporator coil into the return filter space.I cleaned the coil and found a corroded spot that is keeping the water from going down through the evaporator to the drain.I have been told that there was a problem with these evaporators and that there is spray on material to correct it.Is that correct or is there a solution? the m/n is fb4anfo3o s/n2101a61050
Is the hole in the drain catch pan ?
no.there is no hole it is just a spot in thr evap.that is corroded and the water cannot pass it.it's like the coating has come off the evap. tube.
Is it in the fins of the coil that look like a Radiator?
yes. it is a split system and the evaporator is in the house.
So cooling operation is totally fine...just the water is leaking into the duct/filter?
And the drain line is clear?
Yes, that is correct.
If the pan or pipe fitting from it is leaking you can use this http://www.mainsupplies.com/index.php?main_page=product_info&products_id=340
If the coil is damaged/corroded at the copper or aluminum the coil would need to be replaced.
If the area is on the aluminum or copper it cannot be fixed.
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