Ice maker made too much ice, then none at all...

This is either the defrost sensor or the main board. Neither of which you can do anything about with no parts. https://www.repairclinic.com/RepairHelp/How-To-Fix-A-Refrigerator/55-114-539299-/Sub-Zero-Refrigerator-not-defrosting-642

make sure your ice tray in in the righ position. really important. the tray have to press the ice maker switch. or bad ice maker or bad water valve. also make sure to press the ice maker key. in the display. ONLY IN NEW MODELS

My subzero model 550 is not making ice after I shut the water off for a plumbing repair. Now that I turned water back on my icemaker is not working.

its quite possible that your fill tube is clogged with a bit a ice

you will need a new icemaker the mold is not releasing the cubes

you have a leak in the evapator you will have to call a subzero tech to get it changed..

Ice maker was intermittent at best - ice was often just a shell. After two failures to correct we had the ice maker (a Whirlpool - on a Sub Zero - Go figure) replaced. Then the paddle that detects the ice level broke. Next step a new GE.

The problem is that the water freezes in the drain, either because the door is not sealing good, it's open too often or there is mold in the catching tray and tube. Best solution is to take a turkey baster (pump), disconnect the flexible tube from the tray, by pulling down, take a large cup with very hot water mixed with a spoon or 2 of Clorox, fill the baster with that mixture and pump it on the drain tube. You have to do it several times, water will come out, but do it until you hear a "woosh" sound and the water goes freely on the drain. Also spill some of that mixture in the tray so it kills the mold.

1. check the comp. working touch the top of the comp. 2.if the motor comp. working touch the high side tube of the motor comp. if to hot the freon is ok. 3. check the cooling fan inside.

Our 550 bottom freezer drawer froze shut earlier this week and the motor made an unusual sound, like it was working too hard. Two of us eventually were able to open the drawer to find that it had frozen shut due to a leak which filled the ice tray solid and then adhered to the actual door, freezing it shut. We emptied the fridge and freezer, turned the control dials down to 0, but neither the motor nor the light would go off. We finally killed the circuit breaker to get the appliance to shut down. It's cleaned and defrosted and we noticed that the gasket has torn in three places, two on the fridge door and one on the freezer door. The freezer door could be from our tugging, but the refrigerator door is normal wear and tear. We filled the tears with some kind of putty and when it is dry we will start everything up again. This is not the first problem of this nature we have experienced with our subzero 550, but it is the most dramatic. Each previous time we have called a repair man out and he has been unable to fix it.