I'm hoping that I can get some advice for my central A/C unit in my home. I've climbed up in the attic and removed the side cover for the coils, it's clean and clear, my filter is in the ceiling and was clean, but I replaced anyway. The outside coils have been cleaned ad have good flow through the coils. After the unit has been on for about 30 min. it ices up from inside coils down to the outside coils. The outside coils don't ice but the line leading from there to inside coils do. The inside coils ice over so bad the fan can't push air through coils, I have to shut unit down and set fan on manual to defrost coils. Is there a relay or switch that may have expired, or has my pump failed...?
At a loss...
Thanks,
Woody