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Re: Sub-Zero 650 -- lights/fan not working
You can check the bulb's resistance if they still have. they could be both busted. if they have, the problem could come from thre door switch if you have mechanical door switches that controls bulbs. on the LED read outs, you could have a loose connection to the main board because if the board is not functioning well, then you should not have a cooling refrigerator.
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The freezer side may be icing up. Soon enough the fridge side may have problems, too. Love those Sub-Zeros, but if the defrost timer fails, it will ice up. Defrost timer is up top. A generic one will do.
What does you freezer do? Does the lights work and fan work? The fan works with the cold control, if the light switch fails the unit will defrost in about 3 - 4 hours, will remain cold though, just not frozen. I need more information to direct you correctly.
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This is intended as a guide to defrosting a refrigerator. Side by sides and bottom freezers may be similar but will require some different procedures to remove covers to get at the defrost coils.
If your refrigerator is not cooling but your freezer is still working then you most likely have a problem with Ice buildup. Sometimes the ice will start to form inside the refrigerator on the bottom of the freezer compartment, even though the refrigerator section is not staying cool.
1. Empty out the freezer section so that you can remove the bottom panel that covers the evaporator coils. Side by side refrigerators often have the access panel in the back of the freezer. 2. Use a hair dryer or fan to speed up the melting of the ice. Towels will be needed to soak up the water. A wet/dry shop vac and a hair dryer work the best. Melt with one and collect the water with the other. 3. Take the couple of screws that hold the defrost coil loose and remove the heater. With an Ohm meter check the resistance of the coil. If the coil is bad you will get either and open or shorted circuit. If you get a good consistent resistance then it is okay. 4. If your heater coil is good and the fan/blower is working then you probably need to replace the defrost timer or advanced defrost control board, whichever is in your unit.
Replace all pieces and wires to their original positions and then restart the refrigerator. It may take a bit for everything to cool back down, especially in warm weather. Now with everything working properly you should be trouble free again.
I believe it's showing the actual temperature that it's currently inside the refrigerator, not the temperature it's set at. At least that's how my sub zero works. You may need to clean the coils to get it to cool better.
You probably need to defrost freezer - frozen moisture possibly stockedevap. fan motor in the freezer. Turn it OFF for 24 hours and start itover. Make sure no moisture condensation on the freezer compartmentsurfaces as walls and shelfs. If so wipe it out. Pull out and remove upper basket from the freezer, push fan switch which is located almost under ice maker.You have to hear evaporator fan motor start working. Still not work? Call to professionaltechie! Good luck! :)
Blow out the condenser with an air compressor. Make sure the evaporator coil is not frosted up, if so, the drawer may naot have been closed properly, or you may have a defrost problem, (timer, terminator, etc). Possible freon leak in the high side drain loop. Compressor may not be pumping efficiently, could have a bad condenser fan motor.