If your Haier oven light is out, the problem may be the oven control board, light assembly, light bulb, halogen lamp, light socket, or light housing. Although a defective control board is less common, it can stop sending voltage to the light bulb or light assembly. Use a multimeter to check whether power reaches the socket or assembly, and verify that the light switch has continuity. If the switch works but the control board is not supplying power, replace the board. More often, the complete light assembly may need replacement because its components are not sold separately. A burned-out oven light bulb or failed halogen lamp can be checked for continuity or tested in an identical socket. If power reaches the socket but the oven light is not working, the socket may be defective. A faulty light housing can cause the same symptom when the bulb or light board tests good. Before ordering an oven light replacement, enter your Haier range, stove, or oven model number to find the exact part that fits your appliance.
01 - Haier Range/Stove/Oven Oven Control Board
The oven control board is used to send voltage to nearly all of the oven's electrical components including the lights. If the control board is defective, it may be unable to send voltage to the light bulb or light board, although this is not a common problem. You can use a multimeter to determine if power is reaching the light socket or light assembly. If power is not reaching the light socket or light assembly and the light switch tests positive for electrical continuity when tested with a multimeter, then the control board is likely defective and will need to be replaced.
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To determine if a halogen lamp has failed, you can use a multimeter to test it for electrical continuity, or install the lamp into an identical socket to test it.
Use a multimeter to test for power to the light socket. If the light socket is getting power, but the oven light won’t work, this indicates that the light socket is defective. If the light socket is defective, replace it.
If you've determined the light bulb has not burned out or the light board appears to be functioning normally, it's possible that the light housing the bulb or board is installed in is faulty. Use a multimeter to determine if power is reaching the light socket or light assembly. If power is reaching the socket or assembly, then it's likely the light housing is malfunctioning and will need to be replaced.