WIF freezer keeps frosting up. 4 defrost a day at 40min limit (changed it from 30 a few days back.) Superheat is high due to waterlogged insulation. About 18F superheat at evaporator. All 3 evap fans are running. Temp cut out was at -5F and cut in at 5F. I adjusted it to 0F and 10F just for overnight. I melted the ice off with a hose a few days ago so evap doesn't seem to be restricted. Frost pattern appears evenly after the TXV along the distribution lines. Sight glass is mostly full ~80-90% My next solution would be to increase defrost from 4 to 6 times a day. And possibly adjust the TXV. My question is, is the TXV restricted? Edit: The tech who checked this out after me decided to change out the time clock. Thought it might be causing intermittent defrosting when it switches over at certain times.

Posted by ChannanKeo at 2021-02-23 23:24:11 UTC