A-coil Freezing Up
I have an A-coil that is freezing up at the orifice area first then going thru rest of a-coil.
Freon level is fine, A-coil very clean, I checked orifice and is fine, filter is fine, nothing blocking return vents, ducts fine, fan motor/blower motor fine, and
I even blew air with air compressor thru a-coil at orifice to break any restriction but no luck, ran a vacuum afterwards and fine so no leaks. Carrier unit 2.5 ton condensor and a-coil. Outside temp about 70 so doesn't seem cool enough to cause freeze up.
My question is does where the freezing begin give any indication of problem (in this instance on liquid line at orifice vs outside first)? Any other ideas on what it could be, or would you condemn A-coil as having a restriction inside?
any help would be appreciated.....thx....kg