When a fridge stops cooling properly, many people assume the compressor is dead. However, that is not always the case. In many situations, it is the start relay that is causing the issue. We see this problem often, and it can lead to unnecessary compressor replacements if not diagnosed correctly. The start relay helps the compressor kick on and stay running. Without it, the compressor might struggle to start or not run at all.
That is to say, the relay acts like a switch that gives the compressor a push every time the fridge needs to cool. When that switch fails, your compressor might just sit idle. Therefore, understanding the symptoms of a faulty relay can help prevent major repairs or food loss from a warm fridge.
Common Symptoms of a Faulty Start Relay
1. The Fridge Feels Warm, but the Light Is On
A warm fridge is a clear red flag. If your interior lights still work and the digital panel or control knobs are responsive, power is reaching the unit. However, if it is not cooling, the compressor may not be running at all. That often points to an issue with the start relay.
Meanwhile, the fan may still run and the freezer might hold some cold air for a while. But as time passes, both compartments start to warm up. That is a common sign that your compressor is not kicking in, likely due to a failed relay.
2. Clicking Sounds From the Back of the Fridge
One of the easiest signs to detect is the clicking noise. When the start relay is malfunctioning, it might try to start the compressor repeatedly, failing each time. Every attempt results in a click, usually every few minutes.
In other words, the clicking is the sound of the relay trying and failing to engage the compressor. If you hear this pattern and your fridge is not cooling, the relay is a likely suspect. We recommend unplugging the fridge if this continues, to avoid damaging the compressor further.
3. The Compressor Starts Briefly, Then Stops
Another sign is short cycling. This means the compressor runs for a few seconds, then stops abruptly. It tries again, only to fail over and over. Often, this behavior damages the start relay itself, especially if it is already failing.
Consequently, repeated attempts can burn out the relay or even harm the compressor over time. If you notice this pattern, the best course is to stop the cycle before it worsens. A replacement relay is far cheaper than replacing a damaged compressor.
How to Safely Check the Start Relay
Before checking anything, always unplug your fridge. Electricity can remain in some components even after it’s unplugged, so proceed carefully. Locate the compressor at the rear bottom of the unit. The start relay is attached to the side, often behind a plastic cover.
Once you remove the cover, you will see the relay and overload protector. To clarify, the relay usually looks like a small black or white box connected to the compressor’s side. Carefully pull it off and give it a gentle shake. If it rattles or smells burnt, it is likely defective.
For example, we often find that a bad relay smells like burnt plastic or shows visible signs of heat damage. If you are unsure, replacing the relay with a new one that matches your fridge model is a safe move.
If you suspect this part is the issue and want expert help, we offer fast fridge repair in Edmonton to handle the diagnosis and repair quickly.
When a Relay Problem Leads to a Bigger Issue
A faulty relay, when ignored, can take down the compressor completely. That is because the relay repeatedly tries to engage the compressor and may cause overheating or power surges. Some people leave the fridge plugged in for days while it clicks, unaware of the damage being done.
Similarly, this can cause the overload protector to fail, which is designed to shut things down before serious harm happens. If both the relay and overload fail, the compressor might burn out. At that point, you are looking at a major cost or even full appliance replacement.
So, catching a faulty relay early is more than a minor convenience. It helps protect the entire cooling system and extends the life of your fridge. In addition, knowing what to listen and look for helps avoid costly repairs down the road.
Simple Testing Methods and Tools
If you are comfortable with DIY, you can use a multimeter to test the relay. Set your meter to ohms and test across the input and output terminals of the relay. A functional relay will show some resistance. If it reads open or zero, that usually means the relay is dead.
Likewise, many relays have a capacitor function built in. If your multimeter has a capacitance test mode, you can confirm that the component is still functioning properly. However, testing requires care and patience. If you are not sure, replacing the relay is often faster and safer than guessing.
Still unsure if this is something you can handle? Our appliance repair in Edmonton team at Certified Appliance Repair can diagnose and resolve the issue before food spoilage becomes a problem.
Tips to Prevent Future Relay Failures
Start relays are not meant to last forever. They wear down with heat cycles and voltage changes. However, keeping the back of the fridge clean and dust-free can help prevent overheating. That is to say, when the compressor breathes better, the relay is less stressed.
Furthermore, make sure your fridge is plugged into a grounded outlet. Avoid using extension cords, as they can introduce power inconsistencies that damage sensitive parts. We also suggest checking your home voltage regularly, especially in older homes where power fluctuations are common.
For instance, power surges from storms or faulty breakers can impact the relay even if your fridge looks fine afterward. A surge protector rated for appliances can offer extra peace of mind. Most importantly, listen for changes in the sounds your fridge makes. Often, your ears are the first sign something is going wrong.
When to Call for Professional Help
If your fridge is warm, making clicking sounds, or not cooling at all, we strongly suggest looking into the relay. However, not everyone feels comfortable taking apart a fridge or using a multimeter. That is completely understandable.
In cases where symptoms are obvious but you’re unsure of the fix, the best step is to book a technician. We handle these types of issues every week. Our team understands how to properly test the relay, compressor, and overload protection without guesswork.
If you’re facing one of these issues, you can Contact Us to schedule a service call. We’ll inspect your unit and give you real answers, so you know exactly what’s needed and what it will cost.
Frequently Asked Questions
How long does a fridge start relay usually last?
A start relay can last anywhere from five to ten years, depending on usage and conditions. Heat, dust buildup, or voltage issues can shorten its lifespan.
Can I run my fridge without the start relay temporarily?
No. The relay is essential for starting the compressor. Without it, your fridge cannot cool. Bypassing it can cause damage and is not recommended.
Why does my fridge keep clicking but never starts?
This usually means the start relay is trying to activate the compressor but failing. The repeated clicking indicates it’s not able to maintain the startup current.
Is it expensive to replace just the start relay?
Not at all. In most cases, it’s one of the more affordable fridge repairs. The cost is usually much lower than replacing a compressor.
Do all fridge models use the same type of relay?
No. Different fridges require specific relays that match their compressor design. It’s important to use the correct part number when replacing one.