E402BRW Active Smart Refrigerator (purhased new approx 2000 a.d.)
No special problem until excessive popping or growling noises about 2010 a.d., inspected by technician who reported excess frosting but otherwise okay, basically cleaned it out and nothing else). No special problem until about one week ago when it began to run ever more often and noisily (whirring, popping, etc., that stopped when the doors were open and started again when shut). Upper (fridge) temperature indicator light began to operate continuously and has not stopped. Changes to temperature settings seem to have no effect, esp on food defrosting in freezer
esp in lower tray (now set to standard top and bottom). Ice built up on back ceiling of freezer compartment, then on front ceiling, then ice melted and sticky watery liquid began to appear there. Fridge is quieter now but am concerned that food esp in freezer is contaminated (meat in particular remains unrefrosted) and in any case will have to be thrown out.
Any ideas (defrost subsystem, fan, compressor, seals (already clean before current problems arose, still clean)?
What is the sticky stuff in the liquid in the freezer compartment? Is it dangerous?
Thank you from Roger