Okay, let me give this a shot... poke, poke...
Just kidding. Thanks for the advice. Dagnabbit, this is an Energy Star unit, and not unreasonably old. Now get ready for a rant...
All of the "white goods" in this house have expired, or have needed repairs, within 8 years of buying new.
Fridge: Blocked self-defrost drain due to design flaw, fixed by WSY on second try.
Dryer: Over-temperature fuse let go for no good reason, fixed by WSY.
Washer: Held together with duck tape because two screws fell out and are utterly inaccessible to replace.
Stove: Rusted out, developed bad connections. That's when I learned how heavy a stove is.
Dehumidifier: Pegged out, probably due to refrigerant leak as surmised, but possibly also compressor vanes worn out.
Toaster: Took too damn long to make toast. Eventually pegged out altogether.
Microwave: Stopped heating. WSY replaced defective high voltage diode, but still didn't work.
Dishwasher: Repaired by WSY after cherry pits got into the inner workings. Rusted out, racks more expensive than whole new unit.
I've repaired everything that could be figured out by someone who is reasonably handy, but this is absurd.
The only good news is that when I have been able to identify a faulty part, Sears Roebuck has always had a replacement.