If your refrigerator light not working, start with the simple checks and move toward the parts that most often fail. First try a fresh bulb—most interior light problems are a burned out bulb—but if the new bulb doesn’t fix it, test the light switch, door switch and light socket next, since those three are common failure points you can check quickly with a multimeter for continuity or with a quick power check at the socket. Some models require replacing the entire light assembly if the housing or wiring is damaged. It is rare, but a defective dispenser control board can also kill the dispenser or interior light, so inspect the board for burn marks and check for voltage if everything else tests good. You can shop for bulbs, switches, sockets, light assemblies and control boards right here at RepairClinic.com, and enter your model number on RepairClinic.com to find the exact replacement part that fits your refrigerator.
01 - Hardwick 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
03 - Hardwick 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.