Refrigerator Start Relays 101: Beginners Guide (Answers)

Refrigerators are indispensable appliances in our daily lives, keeping our food fresh and beverages cold.

Behind their seemingly simple operation lies a complex system of components, one of which is the fridge start relay.

In this article, we’ll explore what fridge start relays are, what they do, why they fail, and whether you can repair or replace them yourself.

What is a Fridge Start Relay?

A fridge start relay, also known as a compressor relay, is a critical electrical component found in most refrigeration systems. Its primary function is to kickstart the compressor, which is the heart of the refrigerator’s cooling system.

Compressors work by compressing refrigerant gases to remove heat from the fridge’s interior, keeping it cool.

What Do Fridge Start Relays Do?

Start the Compressor: The main task of a start relay is to provide the initial electrical boost needed to start the compressor motor.

Compressors require a higher level of power to initiate their operation, and the relay facilitates this by momentarily connecting the start winding in the compressor circuit.

Maintain Voltage: Once the compressor is up and running, the relay’s job is done.

The appliance’s thermostat and other components will then regulate the compressor’s activity to maintain the desired temperature inside the fridge.

Why Do Fridge Start Relays Fail?

Like any electrical component, fridge start relays can fail over time. Common reasons for their failure include:

Overheating: Continuous use and environmental factors can cause overheating, leading to damage.

Aging: As with most parts, the relay can deteriorate with age and usage.

Power Surges: Electrical spikes or surges can damage the relay’s sensitive electronics.

Dirt and Dust: Accumulation of dirt and dust can interfere with the relay’s performance.

Moisture: Exposure to moisture or humidity can lead to corrosion and malfunction.

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Can You Repair a Failed Fridge Start Relay?

In some cases, you may be able to repair a malfunctioning relay, but it’s not recommended unless you have experience with electrical components and the necessary tools. Repairs typically involve diagnosing and replacing damaged or burnt-out components within the relay.

Can Fridge Start Relays Be Replaced?

Yes, fridge start relays can be replaced, and it’s often the preferred solution when they fail. Here’s how you can go about it:

Identify the Correct Replacement: You’ll need to find the right replacement relay for your refrigerator model. Check your fridge’s user manual or consult the manufacturer’s website for compatibility information.

Safety First: Always disconnect the refrigerator from the power source before attempting any repairs or replacements.

Locate the Relay: The relay is usually located on the compressor or in close proximity. Refer to your fridge’s service manual or online resources for precise instructions.

Remove the Old Relay: Gently detach the old relay from its housing by pulling it out or removing any securing clips. Take note of the wires and their positions.

Install the New Relay: Carefully connect the wires to the corresponding terminals on the new relay. Ensure a secure connection.

Test the Fridge: Reconnect the refrigerator to the power source and monitor its performance. Make sure the compressor starts as expected.

Are Fridge Start Relay Replacements Expensive?

The cost of a fridge start relay replacement can vary depending on the brand, model, and where you purchase the replacement part.

Generally, they are relatively affordable compared to the cost of a new refrigerator. Expect to pay anywhere from $20 to $50 for the part.

Can You Replace a Fridge Start Relay Yourself?

Replacing a fridge start relay is a DIY project that many homeowners with basic electrical skills can tackle.

However, if you’re not comfortable working with electrical components or if your fridge is still under warranty, it’s best to hire a professional technician to avoid any mishaps.

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Final Thoughts

Fridge start relays play a crucial role in ensuring your refrigerator’s compressor functions properly.

When they fail, it’s essential to address the issue promptly to avoid food spoilage and temperature fluctuations.

Whether you choose to repair or replace a malfunctioning relay, always prioritize safety and consider seeking professional assistance when in doubt.

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