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HomeRepair HelpSub Zero Refrigerator RepairSub Zero Refrigerator light not working Repair
Sub Zero Refrigerator light not working
If the refrigerator light is not working in your Sub Zero, start simple and work outward: most often the bulb is burned out or the entire light assembly has failed, and some manufacturers sell the assembly only so you may need the whole unit. If a fresh bulb does not fix it, test the light switch, the door switch and the light socket with a multimeter for continuity and voltage, since faulty switches or a bad socket are common causes of a fridge light not working. A defective dispenser control board can cause a dispenser or interior light to be out, but that is less likely; inspect the board for burn marks and check for voltage at the light connector before replacing it. Keep safety in mind, disconnect power before testing, and replace only the part that fails. Enter your model number at RepairClinic.com to find the exact replacement light bulb, light assembly, switch, socket, or dispenser control board for your refrigerator.
01 - Sub Zero Refrigerator Light Assembly
The light assembly might be defective. Some manufacturers don’t sell the light assembly components separately, and instead require you to purchase the light assembly.
Enter model number to search for the required part specific to your product
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02 - Sub Zero Refrigerator Light Bulb
The light bulb might be out. Replace the light bulb before replacing any of the other parts associated with the light bulb.
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03 - Sub Zero Refrigerator Dispenser Control Board
While it's not a likely cause, a defective dispenser control board could be responsible for a dispenser light not working. You can inspect the board for signs of burning or a shorted-out component. You can also use a multimeter to determine if the board is sending voltage to the dispenser light's plug-in connecter. If no voltage is present, you'll know the board is defective and will need to be replaced.
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04 - Sub Zero Refrigerator Door Switch
To determine if the door switch is defective, use a multimeter to test it for continuity. If the door switch does not have continuity when activated, replace it.
Highly Likely
05 - Sub Zero Refrigerator Light Switch
To determine if the light switch is defective, use a multimeter to test it for continuity. If the light switch does not have continuity, replace it.
Highly Likely
06 - Sub Zero Refrigerator Light Socket
To determine if the light socket is defective, use a multimeter to determine if the socket is getting power. If the socket is getting power, but the light bulb won’t work, this indicates that the light socket is defective. If the light socket is defective, replace it.
Highly Likely
07 - Sub Zero Refrigerator Light Board
First, ensure that the light board is receiving the proper amount of voltage. If the light board is receiving sufficient voltage, but the refrigerator light will not work, replace the light board.
Common
Frequently Asked Questions
Why is my refrigerator light not working?
How do I test the refrigerator light switch or door switch?
The dispenser light is out but the other lights work. Could the dispenser control board be the problem?
The socket has power but the bulb still won't light. Should I replace the socket or the whole light assembly?
How do I find the correct replacement part on RepairClinic.com using my model number?