If the refrigerator light is out, start with the simplest fix: the bulb is often the culprit, so replace the bulb before doing anything else. If a new bulb doesn’t help, check the light socket for power and corrosion, then test the light switch and the door switch for continuity with a multimeter; those three parts are common failures that keep the interior light from coming on. Some models hide the bulb inside a larger light assembly, and in those cases the entire assembly may need replacement if the socket or housing is damaged. It is rare but possible for a dispenser control board or related electronics to fail and stop sending voltage to a dispenser or interior light, so inspect the board for burned components or test for voltage before swapping parts. Enter your model number on RepairClinic.com to see the exact replacement light bulb, socket, switch, assembly, or dispenser control board that fits your Jenn Air fridge and get step-by-step parts and repair guidance.
01 - Jenn Air 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.
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03 - Jenn Air 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.
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.
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.