Lg Refrigerator LFX21976ST Light not working

The Refrigerator Door Switch is an OEM part for LG refrigerators, designed to signal the control system when the door is open or closed. This small but essential component plays a critical role in the overall operation of your refrigerator, including the activation of interior lights and the control of cooling functions. 

Over time, the door switch can fail due to mechanical wear, accidental damage, or a buildup of debris that may prevent it from functioning correctly. 

Symptoms of a bad Refrigerator Door Switch include:

• Interior lights not turning on or off appropriately with the door's position
• The refrigerator running longer than necessary, potentially leading to increased energy bills
• Unusual fluctuations in temperature inside the fridge, affecting food preservation

This OEM LG part can also be used on Kenmore/Sears appliances. 

The Door Switch is an OEM part for LG refrigerators. It is located near the door hinge and is activated by the door's movement. When the door is closed, the switch is engaged, allowing the interior light to turn off and other functions to operate normally. When the door is opened, the switch is released, triggering the interior light to turn on and potentially activating other features, such as the ice dispenser or cooling system.

Causes of a faulty door switch can include wear and tear over time, mechanical damage from excessive force, or electrical issues.

Symptoms of a bad door switch may include:

• The interior light not turning on when the door is opened
• The interior light remains on when the door is closed
• Issues with the dispenser or other functions associated with the door switch