Question about Sub-Zero 650 / O Bottom Freezer Refrigerator

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550 interior lights

All 4 lights do not work. Bulbs are fine. Is there a fuse or reset for lights??? Cooling is fine.

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  • Anonymous Feb 09, 2008

    I have replaced new bulbs and it doesn't seem to work. I think it might be the switch. I am hesitant in taking apart and taking it look at it. If I unplug it, is the only requirement that I wait for at least 5 minutes before plugging it back in?

  • CAAM Feb 23, 2008

    I have replaced the switch in my SubZero 550 after my lights stopped working. Now two of the lights work but not all four. I didn't replace the fan switch - would the remaining two lights be connected to the fan switch? The fan works fine and cooling is fine as well. Thanks.



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I'm going to make my first bet on the switch. Usually, this is a plunger unit on the doorframe along the line with the hinges. It is either stuck or burned out. Usually, you can dig the switch out with a small screwdriver. If the switch has only two wires going to it, you can test by shorting out the two wires to each other. This can be done with a paper clip and then taping it up. Since there is power running through these lines, it is suggested that you unplug your unit before attempting any of this. Your fridge should be unplugged for at least 5 minutes before re-connecting. If more than two wires are involved, you can still connect them all together. Sometimes, the fan is shut by a switch when the door is opened. That would be the connection for another wire. If this is the case, carefully note which wires go where before you begin.

Posted on Dec 18, 2007

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Is the power supply cord unplugged?

Plug into a grounded 3 prong outlet.

Is a light bulb loose in the socket?
Turn the refrigerator or freezer control to OFF. Disconnect the refrigerator from the electrical supply. Gently remove the bulb and reinsert. Then reconnect the refrigerator to the electrical supply and reset the control.

It worked for me and i did not unplug it as it was a bukit in..i would have turned the fuse off at the box
good uck

Is a light bulb burned out?
Replace with an appliance bulb of the same wattage, size, and shape. See the “Changing the Light Bulbs” section in your

Posted on May 03, 2009


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