I replaced the light switch on the subzero 550 and now the frig isn't staying cold. When door is open and I press the switch light goes off so light switch is working.

You mean unplug and replug, yes?

It sounds like something is being reset. This should reset on its own if the door is left closed for a while.
Some frigs have a timer on the light so that if the door is left slightly open the light which gives off enough heat to defrost the frig or freezer will shut off after a time. Make sure the door is closing and that the seal is holding. A large door can sometimes shift on the hinge and go out of alignment. Measure the projection of the edge of the door from the face of the frig box. It will be a few inches (thickness of the door plus rubber seal to the frig box). This measurement should be the same all around the door. If it is not close to the same the door has shifted. If you are handy figure out which hinge has moved, loosen the screws, adjust and retighten. If you are not so handy, this could make things worse real fast. It is like adjusting cupboard doors in that you make the top right corner go in by pulling the bottom left corner out, for example.

The switch can easily be tested by pushing on the switch when the door is open. If you have one switch per door, it turns the light on and the fan off when the door opens. If you have two switches per door, one turns the light on and the other turns the fan off.

While the frig has your attention, pull the grill off and very carefully vacuum the dust off the radiator looking thing and all around. Wait for the evaporaror fan to stop running! This will greatly improve the efficience and lengthen the life of your frig. Your instruction manual will actually tell you to do this... If you have a dusty house do this every couple of months. I've got a pair of subzeros that are now 27 years old. I just had one of the doors shift and ice was forming on the back wall inside.

the fridge will most likely reset it self , pull the cord from the wall and wait for a hour or so and plug it back in , it should kid back up .

Hello Parnn,

I understand thating you are having to problems with you refrigerator one the lights are staying on, second the fridge is not getting cold.

The lights are not turning off because of the light switch. The switch needs replaced it is located on the door jamb so that when the door closes the light goes off.

The secound problem is usually the fan located with the evaperator coil. This fan pulls the air thru the coil and pushes it into the fridge section. When the unit is running you should be able to hear the fan running in the back of the freezer. If the fan is not running the freezer will stay cold but the fridge will not recieve any cool air.

In order to get parts for Sub-Zero Refridgerators you must contact them at 1-800-222-7820 and they will send you to their authorized parts distrubitors.

Thank you for choosing FIxYa.com

Justin

Dear margidaniel,

The light switch and fan switch are two different components. The light switch allows electricity to flow to the lights when the door is open. The fan switch allows electricity to flow to the fan when the door is closed.

If you have any further questions or concerns regarding this or any other issue, please contact us directly. You can contact us via phone Mon-Fri. 8:00-5:00 CST at 800-222-7820. We can be reached via email at [email protected].

Thanks!

Customer Care Team

Sub-Zero/Wolf Appliances

Most appliance parts stores will look up the parts for you if you can provide model and serial numbers. For SubZero parts I use www.reliableparts.com. A good place where you can also see pictures of most parts is repairclinic.com

If it is similar to mine at home (Model 550) the condensor fan is designed to run continuously, even when both the freezer and refrigerator are shut off. There is no control or switch in the fan circuit, so it just runs whenever the fridge is plugged in to the wall. It uses about 56 watts.

yeap. wait to cold back. the fridge have a sensor to shut the lights off. the reason; LIGHTS REALLY POWERFULL. CAN BURN THE LIGHT COVER

There are two door switches one for fan and the other for the lights. With the compressor running, there are two so yu need to make sure it is the refrigerator and not the freezer, open the door and press the right switch and listen for a fan. The left should be your light switch and the problem is generally in the switch, on rare occasions there is a failure of bi-metal safety switch part number 4200850. One very rare occasions you may have a wiring proble.If you go to www.subzero.com there is a showroom locator tab on the top right corner, click it and you will go to a locator page which will get you to your local parts didtributor.

Since the doors on most refrigerators are adjustable, check the alignment of the door by pushing it close to being closed and seeing if the crack still visible is consistent around the three sides not yet in contact with the frame. These normally don't change much over the life of the unit but you may be able to improve the contact through an adjustment. Considering that the door does not seem to want to stay closed, check too on the hinge side to see if that part of the gasket is striking the frame too early. 

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.