Question about Refrigerators
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Posted on Jan 02, 2017
I just went through this with my refridgerator and actually posted one of the questions. Here is what I found ........
In the freezer compartment behind the panel there is an evaporator fan which pulls cold air from the freezer and pushes it up into the refrridgerator compartment. If the fan is not working it is one of three things.. 1) there is so much frost in the fan area the fan blade is stopped and cannot push the cold air into the refridgerator compartment or the air channel is blocked. 2) there is no electricity going to the fan (usually tied to the door switch of the refirdgerator compartment, and 3) the motor is dead and will have to be replaced.
Solution to #1 - defrost but there is another problem in the "frost-free" part of the system which must be addressed or the frost will return and it will happen again in the future.
Solution #2 - check to see there is power to the fan. (most are 110VAC but some are 100VDC. Use a meter and check)
Solution #3 - If there is power, the motor is dead. Replace the motor. Be aware that AC and DC motors are different and replace per manufacture's specifications.
Posted on Nov 23, 2008
there is also a fan in the freezer compartment which if broken will cause this problem. you need to check that both fans are working. please refer to other fridge posts here re repairing/ replacing the freezer fan- there is a document here which shows you exactly what you need to do. important thing is to switch off the appliance first and leave the freezer door open for about 20 minutes before attempting to remove the back cover ie let it warm up first, so that you don't break any of the panels.
Posted on Jan 05, 2009
This is a Sub Zero and many technicians do not realize that these units most all run on 2 separate systems. 2 cold controls 2 compressors 2 evaporators. They share a condenser and condenser fan motor. What you are describing is most likely a bad cold control. It is pretty common for these to get some age and go bad. If you are very savvy with repairs yourself then if you access the compressor area and feel that the compressor on the right is cool and the compressor on the left is warm then you know that the ref. compressor has not been running. UNPLUG THE UNIT OR CUT THE BREAKER OFF. Remove the shelving from the fresh food section and the cover to the lights and the panel below the lights and lean the back panel forward to access the cold control. You will see 3 wires to the cold control. The green wire is the ground wire of corse. Unplug the other 2 wires remembering their location on the control unit. Take a jumper wire and jump these 2 wires. If when you power the unit up the right side compressor comes on then you know that your fresh food cold control is bad. Replace fresh food cold control.
Posted on Apr 11, 2009
I was having the same problem but with the refrigerator side. I know your problem was with the freezer side but I hope this works in your situation too. I was also told to unplug the fridge for 20 minutes and that did not do a thing to reset the circuit board in my situation. Unplug the refrigerator first. In the back of the refrigerator at the bottom is a metal panel. Remove that panel and off to the right side of it should be a white looking plastic box. Unscrew that box from the fridge and open it up to get to the circuit board. Remove ALL harnesses from the circuit board and capacitor. After doing so plug them all back in and reassemble everything back together and plug in the fridge. This should reset the board and allow it to function correctly. This is advice I got from someone else and everything as of today is cooling down like it should. I hope this helps everyone else out. Best of luck.
Also since the evaporator was frozen solid at the bottom on the refrigerator side I had to leave the power off until it thawed and then had to soak up all the water that collected at the bottom of it.
Posted on Apr 20, 2009
I just purchased a similar model and had the same frustration. Finally called the store and it was in DEMO mode. Open the freezer draw and hold down the Ultra Ice & Refrigerator Temp buttons simultaneously for 5 seconds. That worked for me and hope it will do the trick for you.
Posted on Jul 12, 2009
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