Whirlpool Refrigerator Starter Relay – Fix Your Fridge’S Cooling

Picture this: You open your Whirlpool refrigerator, expecting a blast of cold air, only to be met with a lukewarm breeze. Your carefully stored groceries are at risk, and the silence from the compressor is deafening – or worse, you hear an unsettling clicking sound. Before panic sets in and you contemplate buying a whole new fridge, let’s talk about one tiny, yet mighty, component that might be the hero of your cooling crisis: the starter relay.

For any DIY homeowner, garage tinkerer, or even a seasoned metalworker used to precise repairs, tackling a fridge issue might seem daunting. But understanding and replacing a faulty refrigerator starter relay is a surprisingly straightforward repair that can save you significant money and extend the life of your appliance. It’s about empowering yourself with knowledge, much like preparing for a challenging woodworking project or mastering a new welding technique.

At The Jim BoSlice Workshop, we believe in equipping you with the skills to tackle these challenges head-on. This comprehensive guide will walk you through everything you need to know about your Whirlpool refrigerator’s starter relay, from diagnosing the problem to confidently replacing the part. Get ready to restore that refreshing chill to your kitchen!

Understanding the Heart of Your Refrigerator’s Cooling System

Before we dive into troubleshooting, it’s essential to grasp what the starter relay does and why it’s so crucial for your refrigerator’s operation. Think of it as the ignition switch for your fridge’s engine – the compressor.

What is a Refrigerator Starter Relay?

The refrigerator starter relay is a safety and starting device located on the side of your refrigerator’s compressor. Its primary job is to provide a brief surge of power to the compressor’s start winding, helping it overcome initial inertia and begin its cooling cycle. Once the compressor is running, the relay disconnects the start winding, allowing the compressor to operate efficiently on its run winding.

Without this little workhorse, your compressor simply can’t get going. It’s a small component, but its role is absolutely vital for keeping your food fresh.

How the Relay Works with Your Compressor

Your refrigerator’s compressor is an electric motor with two main windings: a start winding and a run winding. The start winding provides the extra torque needed to get the compressor motor spinning. Once the motor reaches operating speed, the start winding is no longer needed and must be disconnected to prevent overheating.

This is where the relay comes in. It briefly connects the start winding to the power source and then quickly disconnects it once the compressor is up and running. This entire process happens in a matter of seconds each time your refrigerator needs to cool.

Common Types of Starter Relays (PTC, Current, Voltage)

There are a few different types of starter relays you might encounter, depending on your Whirlpool refrigerator model:

• PTC (Positive Temperature Coefficient) Relay: This is the most common type found in modern refrigerators. It uses a small ceramic disc that heats up when current flows through it, increasing its resistance and effectively disconnecting the start winding. It’s reliable and compact.
• Current Relay: This type uses an electromagnetic coil that senses the current draw of the compressor. As the motor starts and current drops, the coil de-energizes, opening a switch that disconnects the start winding.
• Voltage Relay: Less common in household refrigerators, voltage relays are typically used with larger compressors and use a coil that senses the back electromotive force (EMF) generated by the motor to open the start winding circuit.

For most Whirlpool refrigerators, you’ll likely be dealing with a PTC relay, which is generally robust but can still fail over time.

When Your Fridge Isn’t Cooling: Signs of a Faulty Starter Relay

Recognizing the symptoms of a failing starter relay is the first step towards a successful DIY repair. These signs often indicate that the compressor isn’t getting the consistent power it needs to operate.

The Dreaded Clicking Sound

This is perhaps the most common and tell-tale sign. If you hear a series of audible clicks coming from the back of your refrigerator every few minutes, followed by silence, it’s often the overload protector repeatedly trying to engage the compressor, only to be tripped by a faulty starter relay. The relay tries to start the compressor, fails, and the overload protector cuts power to prevent damage.

This clicking can be quite distinct and is a strong indicator that something is amiss with the starting circuit.

Compressor Hum, No Start

Another common symptom is when the compressor hums loudly for a few seconds, then shuts off. This means the compressor is receiving power to its run winding but cannot get the initial boost from the start winding to begin rotation. The hum is the motor trying to turn, but without the start relay’s help, it can’t overcome its inertia.

Eventually, the overload protector will trip due to the excessive current draw from the stalled motor, leading to the “click and off” scenario.

Warm Interior, Spoiled Food

Ultimately, the most critical symptom is the refrigerator not cooling properly. If your food is spoiling faster than usual, milk is lukewarm, and ice cream is soft, then the cooling system isn’t functioning. While many issues can cause a warm fridge, when combined with the clicking or humming sounds, a failing starter relay is a prime suspect.

Don’t let your hard work at the grocery store go to waste! Addressing this quickly can save your food and your wallet.

Diagnosing a Faulty Whirlpool Refrigerator Starter Relay: Tools & Techniques

Before you grab a new part, a proper diagnosis is key. This is where your inner detective comes out, using basic tools and a methodical approach. Safety is paramount here, just like ensuring your workbench is clear before firing up a circular saw.

Safety First: Preparing for Diagnosis

Anytime you’re working with electrical appliances, safety must be your top priority.

1. Unplug the Refrigerator: This is non-negotiable. Always disconnect power from the wall outlet before touching any internal components.
2. Wear PPE: Put on work gloves to protect your hands and safety glasses to shield your eyes from any unexpected debris or electrical arcs (though unlikely with power off, it’s good practice).
3. Clear the Area: Make sure there’s enough space to safely pull the refrigerator away from the wall and work comfortably.

Treat this repair with the same respect you would a welding project – proper setup prevents accidents.

Locating the Starter Relay and Overload Protector

The starter relay and its companion, the overload protector (OLP), are typically housed in a small plastic or metal box attached to the side of the compressor.

1. Pull the Fridge Out: Gently pull your Whirlpool refrigerator away from the wall to access the back panel.
2. Remove the Access Panel: Using a Phillips head screwdriver or nut driver, remove the screws holding the lower back access panel in place. Set the panel and screws aside.
3. Identify the Compressor: You’ll see a large, black, usually round or oval-shaped component – that’s the compressor.
4. Find the Relay Cover: Look for a small plastic or metal box or cover clipped or screwed onto the side of the compressor. This usually covers the starter relay and overload protector. Carefully pry or unclip this cover.

Once the cover is off, you’ll see the relay, which often looks like a small black or white plastic module, connected directly to the compressor terminals. The overload protector is usually a smaller, round or rectangular component right next to it.

Testing the Relay with a Multimeter (Continuity & Resistance)

This step requires a multimeter, a handy tool for any DIYer. We’ll be checking for continuity (if a circuit is complete) and resistance (how much it opposes current flow).

• For PTC Relays:

1. Remove the relay from the compressor terminals. Note how it’s connected.
2. Set your multimeter to the ohms (Ω) setting.
3. Touch the probes to the two main terminals of the PTC relay.
4. You should get a low resistance reading, typically between 2 to 10 ohms. If you get an infinite reading (open circuit) or zero ohms (short circuit), the relay is likely faulty.
5. Gently shake the relay. If you hear rattling, it’s definitely broken internally.

• For Current Relays:

1. With the relay removed, set your multimeter to continuity mode.
2. Invert the relay (turn it upside down). The internal switch should close. Test for continuity between the run and start winding terminals – you should have continuity.
3. Turn it right side up. The switch should open. Test again, and you should now have no continuity. If it fails either test, it’s bad.

Testing the whirlpool refrigerator starter relay accurately ensures you’re replacing the correct part, avoiding unnecessary costs and effort.

Inspecting for Physical Damage

Sometimes, the problem is visible to the naked eye. Look closely at the relay for:

• Burn Marks or Discoloration: Any signs of overheating can indicate an internal electrical failure.
• Cracks or Breaks: Physical damage can prevent the relay from functioning correctly.
• Loose Connections: Ensure all terminals are clean and securely attached. Corrosion can also be an issue.

If you see any of these, even if your multimeter test is inconclusive, it’s a strong indicator that the relay needs replacing.

Step-by-Step: Replacing Your Whirlpool Refrigerator Starter Relay

Once you’ve confirmed the starter relay is the culprit, the replacement process is straightforward. This is where your careful planning pays off, just like laying out your cuts before touching a piece of lumber.

Gathering the Right Replacement Parts and Tools

Before you begin, ensure you have everything you need:

• New Starter Relay: Crucially, get the correct OEM (Original Equipment Manufacturer) or a high-quality aftermarket part specifically designed for your Whirlpool refrigerator model. Check your fridge’s model number (usually inside the fridge on a sticker) and cross-reference it with the part number.
• New Overload Protector (Optional but Recommended): Since the OLP works in conjunction with the relay and often experiences similar stress, it’s good practice to replace both at the same time.
• Tools:
  • Phillips head screwdriver
  • Flathead screwdriver (for prying)
  • Nut drivers (if applicable for panel screws)
  • Needle-nose pliers (for stubborn connectors)
  • Wire brush (for cleaning terminals)
  • Work gloves and safety glasses

Having the right tools at hand makes the job safer and more efficient.

Disconnecting Power and Accessing the Compressor

You’ve already done this for diagnosis, but it bears repeating:

1. Unplug the Refrigerator: Absolutely ensure the power cord is disconnected from the wall outlet.
2. Pull the Fridge Out: Move the refrigerator far enough from the wall to comfortably work on the back.
3. Remove the Back Access Panel: Unscrew and carefully remove the lower back panel.

Take your time with this step. Rushing can lead to stripped screws or damaged panels.

Removing the Old Relay and Overload Protector

With the access panel off, you’ll have a clear view of the compressor and the relay assembly.

1. Disconnect Wires: Carefully note or take a photo of how the wires are connected to the old relay. Then, gently pull the wire harness connector(s) off the relay terminals.
2. Remove the Relay: The starter relay typically slides or clips directly onto the compressor’s electrical pins. Gently pull it straight off. It might be snug, so a little wiggling may be necessary.
3. Remove the Overload Protector: The OLP is usually a smaller component clipped onto one of the compressor pins. Remove it in the same manner.

Be gentle when removing these parts to avoid bending the compressor pins.

Installing the New Relay and Reassembling

This is essentially the reverse of the removal process.

1. Clean Compressor Pins: Use a wire brush to gently clean any corrosion or residue from the compressor’s electrical pins. This ensures a good connection.
2. Install New Overload Protector: If you’re replacing the OLP, slide the new one onto the correct compressor pin first.
3. Install New Starter Relay: Align the new whirlpool refrigerator starter relay with the compressor pins and firmly push it into place until it’s snug. Ensure it’s correctly oriented.
4. Reconnect Wires: Reattach the wire harness connector(s) to the new relay’s terminals, referring to your photo if needed. Ensure the connections are secure.
5. Replace Cover (if applicable): If there was a plastic cover over the relay, put it back on.
6. Replace Access Panel: Screw the back access panel securely into place.
7. Push Fridge Back: Carefully push the refrigerator back into its original position, being mindful not to crimp any lines or cords.

Double-check all connections before moving to the next step. A loose connection can cause future problems.

Post-Replacement Checks and Troubleshooting

You’re almost done! Now it’s time to see if your hard work paid off.

1. Plug in the Refrigerator: Reconnect the power cord to the wall outlet.
2. Listen and Observe: Listen for the compressor to kick on. You should hear a smooth hum, and the clicking sound should be gone.
3. Check for Cooling: Give the refrigerator a few hours to cool down. Place a thermometer inside to verify that it’s reaching and maintaining the correct temperature (typically 35-38°F for the fresh food section and 0-5°F for the freezer).

If the fridge still isn’t cooling, or the clicking returns, re-check your connections. If everything seems correct, the issue might be something else, like the compressor itself, a faulty thermostat, or a refrigerant leak. At that point, it might be time to consider calling a professional appliance technician.

Preventative Maintenance and Extending Your Fridge’s Life

Replacing a starter relay is a great DIY fix, but a little preventative maintenance can help prevent future issues and keep your Whirlpool refrigerator running smoothly for years. Think of it like maintaining your woodworking tools – a little care goes a long way.

Keeping the Condenser Coils Clean

Dirty condenser coils are a major culprit for refrigerator inefficiency and can put extra strain on your compressor and its starting components.

• How to Do It: At least once or twice a year, pull your refrigerator away from the wall and, with the power unplugged, use a vacuum cleaner with a brush attachment to gently clean the coils located on the back or underneath the fridge.
• Benefit: Clean coils allow heat to dissipate more effectively, reducing the workload on the compressor and extending its lifespan.

Ensuring Proper Ventilation

Your refrigerator needs to breathe. Restricting airflow around the coils can lead to overheating.

• Tips: Ensure there’s at least an inch or two of space between the back of your refrigerator and the wall, and avoid placing items directly on top of the fridge that could block top vents.
• Benefit: Proper ventilation prevents heat buildup, keeping the compressor and other components from overheating.

When to Call a Pro vs. DIY

While tackling a whirlpool refrigerator starter relay replacement is well within the scope of many DIYers, it’s important to know your limits.

• DIY When: You’ve confidently diagnosed the relay as the issue, feel comfortable working with electrical components, and have the right tools.
• Call a Pro When:
  • You’ve replaced the relay, but the problem persists.
  • You suspect a more complex issue like a compressor failure, refrigerant leak, or control board problem.
  • You’re uncomfortable with electrical work or diagnosing the problem.

Knowing when to seek expert help is a sign of a truly skilled DIYer, just like knowing when a welding project is beyond your current skill level.

Frequently Asked Questions About Your Whirlpool Refrigerator Starter Relay

We get a lot of questions about refrigerator repairs, and the starter relay is a common topic. Here are some answers to help you further.

What’s the difference between a starter relay and an overload protector?

The starter relay’s job is to provide a momentary power boost to the compressor’s start winding. The overload protector (OLP), on the other hand, is a safety device that monitors the compressor’s temperature and current draw. If the compressor overheats or draws too much current (often due to a failed relay or compressor), the OLP temporarily cuts power to prevent damage. They work together, but have distinct functions.

Can a bad starter relay damage the compressor?

Yes, indirectly. If the starter relay fails to engage or disengage properly, the compressor motor can either fail to start (leading to overheating if it keeps trying) or continuously run on the start winding (which will quickly burn out the motor). The overload protector is there to prevent immediate catastrophic damage, but repeated attempts to start against a faulty relay will shorten the compressor’s lifespan.

How long does a refrigerator starter relay typically last?

A refrigerator starter relay can last anywhere from 5 to 15 years, often for the entire lifespan of the appliance. However, factors like frequent power surges, dirty condenser coils (causing the compressor to work harder), or simply manufacturing defects can lead to premature failure.

Is it safe to bypass the starter relay for testing?

Absolutely not. Bypassing the starter relay is extremely dangerous and can lead to severe electrical shock, damage to the compressor, or even a fire. Never attempt to bypass safety devices like the starter relay or overload protector. Always diagnose and replace faulty components properly.

Where can I find the correct replacement part number?

The most accurate way to find the correct replacement part number for your Whirlpool refrigerator starter relay is to locate your refrigerator’s model number (usually on a sticker inside the fresh food compartment, on the side wall, or near the top). Then, search for parts using that model number on the Whirlpool parts website or a reputable appliance parts supplier. You can also often find the part number directly on the old relay itself.

You’ve now got the knowledge and confidence to tackle a common, yet critical, refrigerator repair. Diagnosing and replacing a whirlpool refrigerator starter relay is a fantastic way to extend the life of your appliance, save money, and build your DIY skills. Remember, every successful repair, whether it’s fixing a fridge, building a workbench, or mastering a new welding technique, adds to your arsenal of practical expertise. Keep learning, keep tinkering, and keep those projects rolling!

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Jim Boslice

Jim Boslice is a power tool enthusiast who tests, reviews, and shares practical guides to help DIYers and professionals choose the right tools for every project.

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