Customer complaint was poor ice production and ice down the back wall. Unit is about 6 months old.
Found toothpick sized ice in the bucket. Also found the pictured ice sculpture against the back wall, almost directly underneath the mold. Thought "oh, hey, slam dunk -- IM is either overfilling, or the mold is leaking, or the spray cup is spraying water."
Put the unit into self harvest. Unit finished. I heard water valve engage but felt almost no water on my finger tips. I saw no leak from the mold, saw no drips, no spray, no water out of place.
Took back panel off and took fill tube out. No ice or obstructions in tube. Put unit into harvest again and put fill tube over a bowl. Almost no water came out.
Followed the line back and came to a self piercing valve that was about as green as a magic marker. So for now I'm thinking that's the source of my poor fill?
However, I still don't have answer as to where the this ice is coming from. Given that I've got frozen drips on the ceiling (see second picture), I'm wondering if this is condensation from warm air coming in.
The door passed the seal test. Is it at all likely or possible that the putty insulating the fill cup, thermostat and wire harness is weak or poorly applied?