||10-01-2011 05:59 PM
Heat Pump blows cold for awhile
Hi all! I'm the proud owner of a crappy 3 ton Ducane heat pump that is under 7 yrs old. Had a major R22 leak last fall, had the leak repaired, refilled w 7#s of freon. Replaced contactor, condenser fan, a capacitor and defrost control board because it had a large black burn mark when fan went out. Had been running fine until recently. Also the unit doesnt seem to drain properly, there's always alot of condensation lying at the bottom of the unit. Some of it drains off but not all. Doesnt appear to be any obstruction in the pvc drain tube. It's a rooftop unit, brilliant in the sonoran desert:huh:
So the problem now is that it runs fine & cold for the 1st 20 mins or so (17-18deg split) and then slowly starts to blow warmer until its about a 5 deg split & it just runs until it blows warm. Filter is brand new so Im not sure if its freezing or low on freon again or what. Then I'll shut it off for an hour or so, turn it back on & its fine for awhile & repeats the same thing again.
Any ideas would be greatly appreciated, thanks!! 1340 sq ft, 1 floor