Refrigerator tripping GFCI? A Master Electrician Explains Why

James is a Master Electrician with over 30 years of experience. We do not use AI for the content of our articles.

A refrigerator tripping a GFCI outlet is more than an inconvenience — if you don’t catch it quickly, your food spoils. And it will keep happening until you find and fix the underlying cause.

There are several reasons a refrigerator can trip a GFCI, ranging from harmless nuisance tripping to a genuine electrical fault in either the circuit or appliance. This article covers all of them, including what to do about each one.

What Is a GFCI and Why Is It Used?

A GFCI, or ground-fault circuit interrupter, is a special type of outlet required by electrical code in areas of the home exposed to water — bathrooms, kitchens, and garages being the most common.

Its sole purpose is to protect people from electrical shock. This is different from a standard circuit breaker or fuse, which is designed to protect your home from electrical fires by cutting power when current exceeds safe levels.

A GFCI works differently. It continuously monitors the balance of current flowing in and out of the outlet. If it detects even a tiny imbalance — as little as 4-6 milliamps — it cuts power in a fraction of a second. To put that in perspective, that’s fast enough to prevent electrocution even if someone drops a plugged-in hair dryer into a sink full of water.

A GFCI can be built into either a circuit breaker or an outlet.
– A dead giveaway of a GFCI outlet is the two small test and reset buttons on its face.
– On a GFCI breaker, there will be a single test button.

Both types can protect multiple outlets downstream on the circuit.

Why A Refrigerator Keeps Tripping The GFCI

When a refrigerator is plugged into a GFCI there are a few reasons it may keep tripping the outlet.

1. Nuisance Tripping

What it is:

A nuisance trip is when a GFCI or AFCI outlet or breaker trips when there is nothing “wrong” with the circuit or appliance. There is no danger or safety hazard present.

Why it happens:

Most nuisance trips occur when a GFCI senses something in an appliance that it doesn’t recognize, and so it trips – just to be safe.
Not all appliances are manufactured with the same tolerances and specs. Therefore, if those specs lie outside the tolerances of the GFCI, a nuisance trip may occur.

For example, most refrigerators with vapor compression have what are called inductive loads.

When an inductive load is switched on or off, it can produce electromagnetic interference (EMI). The interference can, and often will, trip a GFCI outlet.

Another culprit is a compressor motor’s inrush current. It’s not a faulty appliance, but rather it’s design is incompatible with the GFCI sensors.

I’ve had to tell countless customers over the years that their fridge is fine, their circuit is fine…. but the two just don’t like each other. Of course, this is a frustrating thing for a homeowner to hear.

However, there are a few things that can be done to potentially alleviate the nuisance.

How to fix:

1. First, find out if it is simply a weak or oversensitive GFCI outlet. Plug the fridge into a different circuit that is also GFCI-protected. Use an extension cord, if necessary.
2. As a way to double-check, plug another motor-driven appliance into the fridge’s outlet and see if it trips. If you have a separate freezer or a second refrigerator, this would be an ideal appliance to try here.
3. If the fridge trips another GFCI outlet, then you know it’s a problem with the appliance. This doesn’t necessarily mean the appliance is “bad”, but it could be. See point 5 below.
4. If the fridge GFCI outlet trips when another appliance is plugged into it, the outlet is likely to blame. Try replacing it with an new GFCI outlet of a different brand. Some brands aren’t as finicky as others.
5. If the fridge is determined to be the issue, then it will take some deeper investigating. It might be something internal is amiss (see An Actual Ground Fault section below). But, as mentioned above, it also could just be an incompatibility issue between the appliance design and the GFCI sensors.

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Bonus: Can a Snubber Fix Nuisance Tripping?

Several readers have asked about snubbers, so I’ll address them directly.

A snubber is a small electrical component — typically a resistor and capacitor wired in series — that absorbs the voltage spike produced when an inductive load like a compressor motor switches on or off.

By dampening that spike before it reaches the GFCI sensors, a snubber can sometimes eliminate nuisance tripping without replacing the outlet or moving the appliance to a different circuit.

They’re commonly built into commercial and industrial equipment for exactly this reason, but refrigerators don’t typically include them from the factory.

In practice, results are mixed. Some homeowners have had success installing an inline line filter — sometimes referred to as a snubber in DIY circles — between the refrigerator plug and the outlet.

Others see no improvement, usually because their tripping is caused by leakage current to ground rather than EMI spikes, which a snubber won’t address.

The bottom line: A snubber is worth trying if you’ve confirmed it’s a nuisance trip (not a real ground fault) and you’ve already ruled out a faulty outlet.
It’s a low-cost experiment — line filters run $15–$40 — and it won’t cause any harm to your appliance or circuit. But it’s not a guaranteed fix, and it won’t help at all if there’s an underlying ground fault present.

2. An Actual Ground Fault

What it is:

A ground fault occurs when electrical current escapes its intended path — the hot and neutral wires — and finds an unintended route to the ground. In a refrigerator, this typically means current is leaking through the appliance’s metal frame, insulation, or components rather than flowing cleanly through the circuit.

This is precisely what a GFCI outlet is designed to detect. The moment it senses even a tiny imbalance between the current flowing out and the current returning, it trips instantly as a protective measure.

Unlike nuisance tripping, which is a false alarm caused by EMI, a ground fault is a real electrical problem that the GFCI is correctly identifying. Removing or bypassing the GFCI in this situation doesn’t fix anything — it simply removes the warning system while the underlying hazard remains.

Why it fails:

Ground faults in refrigerators develop over time and are almost always caused by one of the following:

• Moisture and condensation — refrigerators naturally produce condensation, and over time moisture can work its way into wiring connections, terminal blocks, and component housings. Water is conductive, and even small amounts can create a leakage path to the metal frame of the unit
• Damaged or deteriorated wiring insulation — the constant vibration of a running compressor gradually wears down wire insulation over years of use. Once the insulation cracks or rubs through, bare wire can contact metal components and create a ground fault
• A faulty defrost heater — the defrost heater runs in close proximity to water by design. If the heater element develops a crack or its insulation degrades, it can leak current to ground. This is why many refrigerators trip the GFCI specifically on a predictable schedule — every 8-12 hours when the defrost cycle runs
• A failing ice maker — ice makers operate in a wet environment and are particularly prone to developing ground faults as they age. Water getting into the ice maker’s wiring harness or motor is a common cause
• Worn compressor windings — as a compressor ages, the internal wire windings can break down and allow current to leak to the compressor casing, which is grounded to the frame

How to fix:

Ground faults in refrigerators are not straightforward DIY repairs because locating the exact source requires systematically isolating components — which means disconnecting and testing the defrost heater, ice maker, compressor, and wiring harness individually.

However, there are a few things you can do to narrow it down before calling a technician:

1. Note when the tripping occurs — if it trips on a regular schedule (every 8-12 hours), the defrost heater is the most likely culprit. If it trips specifically when the compressor kicks on, suspect the compressor windings or start relay. If it trips randomly, moisture in the wiring is more likely
2. Disable the ice maker temporarily — if your refrigerator has an ice maker, turn it off and monitor whether the tripping stops. If it does, the ice maker is the source
3. Check for visible moisture — pull the refrigerator away from the wall and inspect the rear panel and any accessible wiring for signs of water damage, corrosion, or burned insulation

Beyond these steps, a qualified appliance technician with a multimeter can test each component for current leakage and pinpoint the exact fault quickly.

Given that a ground fault represents a real shock hazard — not just a nuisance — it’s worth getting it properly diagnosed rather than simply bypassing the GFCI and hoping for the best.

Read: Why Your Fridge is not Cooling, but the Light is On

3. Faulty Compressor Start Relay

What it is:

The compressor start relay is a small but critical component — typically about the size of a large marble — that sits on the side of the compressor and helps it start up.

Its job is to provide an extra burst of electrical current to get the compressor motor spinning, then drop out of the circuit once the motor is running on its own.

It’s one of the most overlooked causes of GFCI tripping because the problem only occurs in that brief startup moment — not during normal operation.

Why it fails:

When a start relay begins to wear out or fail, it can no longer drop out of the circuit cleanly after startup.

Instead of delivering a controlled burst of current, it causes the compressor to draw a prolonged, excessive amount of current during startup — sometimes two to three times its normal operating load.

A GFCI outlet is extremely sensitive to current irregularities. That abnormal startup surge is read by the GFCI as a potential ground fault, and it trips the outlet as a protective measure — even though there’s no actual wiring fault present.

This is why a refrigerator with a failing start relay will often trip the GFCI specifically when the compressor kicks on, then run normally once reset — until the compressor cycles on again.

A failed start relay also typically produces a telltale rattle when you remove it and shake it — the burned-out internal components break loose and rattle inside the casing. If you hear that rattle, the relay is bad.

How to fix:

The good news is that a start relay is one of the cheapest and easiest refrigerator repairs you can do yourself. Here’s how:

1. Unplug the refrigerator before starting
2. Pull the refrigerator away from the wall to access the rear panel
3. Locate the compressor — it’s the large black dome-shaped component at the bottom rear
4. The start relay plugs directly into the side of the compressor — pull it straight out
5. Shake it — if it rattles, it’s confirmed bad
6. Take it to an appliance parts store or look up your refrigerator model number online to find the correct replacement
7. Plug the new relay in, push the refrigerator back, and restore power

Replacement relays typically cost between $10-$30 depending on the brand and model. If the GFCI tripping stops after replacing the relay, you’ve found and fixed the problem without calling a technician.

If replacing the relay doesn’t resolve the tripping, the compressor itself may be worn and drawing excessive current on startup — at which point a technician’s diagnosis is needed to determine whether compressor replacement or full unit replacement is the more cost-effective path.

Read: Fridge Compressor is Running, But Not Cooling

Why a Refrigerator Keeps Tripping the Breaker

Sometimes, it’s not the GFCI that trips, but rather the circuit breaker itself. There are several ways a refrigerator can cause a breaker to pop.

Overload

One reason for a tripped breaker is a circuit overload. This simply means the circuit is receiving a higher demand for electricity that it can actually deliver.

The most common reason for this to happen is when multiple appliances are plugged into the same circuit your fridge is on.

When this occurs, you should unplug everything else from the circuit except the fridge. This will tell you if the refrigerator is the problem.

To be sure, plug the fridge into a different circuit altogether and see if that breaker trips.

If the circuit continues to operate with only the fridge plugged in, keep investigating.

Related: Why Does My Stove Keep Tripping The Breaker?

Short Circuit

A short circuit will occur when two wires inside an appliance or outlet touch each other, thus creating a surge of electricity causing the breaker to trip.

If the breaker tripped as soon as the fridge was plugged in, unplug this appliance and try plugging something else in.

If the second appliance you plugged in works, the short circuit is probably inside the fridge.

If nothing works with the outlet, there are most likely wires behind the receptacle cover causing the problem.

Just remember, the issue can also be inside the wall or the breaker box itself.

Why A Refrigerator Trips The GFCI on A Generator

Much the same as a refrigerator can trip a GFCI outlet inside your home, it can do the same when connected to a generator.

Here are the common reasons this happens.

1. Ground Fault

If your refrigerator has a ground fault, it will trip the GFCI on your generator every time.

To stop this from occurring you will need to locate the faulty part inside the fridge or freezer and replace it.

2. Faulty Generator

Regardless of how new the generator is, it could be faulty.

If your machine is still under warranty, it’s a great idea to try to exchange the current one for a replacement.

There are many people who have faced this same issue, and at the end of the day, it was the generator itself.

3. Electrical Leak

When the GFCI outlet senses electrical “leaks”, where the current is escaping the device and taking a different route to the ground, it will trip the outlet.

Leaks are commonly caused by dust, defective electrical appliances, water, or worn insulation.

4. Bond or Ground Jumper Issue

Most generators are made with a neutral ground jumper wire.

If you’re hooking the generator to your house this ground jumper will need to be removed to prevent nuisance tripping.

Since your house is already neutral bonded to the ground, the wire is unneeded.

However, if you ever disconnect the unit from the house and use for other purposes, you will have to re-connect the ground jumper.

Have you dealt with refrigerators tripping GFCIs or breakers before?

What was the problem, and how did you fix it? We’d love to hear your thoughts, comment now and let us know.

Final Thoughts

A refrigerator tripping a GFCI comes down to one question: is it a real fault, or isn’t it?

If the tripping is random and your refrigerator is otherwise running fine, start with the simplest explanations first — a sensitive or aging GFCI outlet, EMI interference from the compressor motor, or a failing start relay.

These are all fixable without calling a technician, and the start relay in particular is one of the cheapest appliance repairs you’ll ever do.

If the tripping follows a predictable pattern — especially every 8-12 hours — suspect the defrost heater. If it trips the moment the compressor kicks on, the start relay or compressor windings are the first place to look. Timing tells you a lot.

A real ground fault is a different situation. The GFCI is doing exactly what it’s supposed to do, and bypassing it or swapping it for a standard outlet doesn’t fix the problem — it just removes the warning system. Get it properly diagnosed.

One last thing worth knowing: under current NEC code, kitchen and garage outlets are required to be GFCI-protected, which means refrigerators in those locations will always be on GFCI circuits.

If you’re in a newer home or recently had your kitchen rewired, this is simply the reality you’re working with. The good news is that most compatibility issues can be resolved — it just takes a little patience to identify which category your problem falls into.

If you’re still stuck after working through this guide, drop a question in the comments below. We’re happy to help!