How to Fix Compressor clicking on Frigidaire FFTR1821TS (Top Freezer)

Compressor clicking

This step-by-step repair guide walks you through fixing compressor clicking on your Frigidaire FFTR1821TS (Top Freezer). With the right tools and parts, most homeowners can complete this repair in 1–2 hours and avoid a costly service call.

Part of our Top 20 Refrigerator Models & Common Repair Issues Guide. Browse all refrigerator repair guides for related models and issues.

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Common Symptoms & Causes

If your Frigidaire FFTR1821TS is experiencing compressor clicking, you may notice one or more of the following symptoms.

The refrigerator clicks every 2–3 minutes but never fully starts cooling
The freezer temperature rises above 10°F despite the thermostat being set correctly
You hear a loud clicking near the bottom rear of the unit followed by immediate silence
The interior light works but the compressor motor never runs

This issue is most commonly caused by a failed start relay, a worn overload protector, or a faulty compressor that can no longer start under load.

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Safety First

Unplug the refrigerator from the power outlet before starting any repair — never work on a live appliance.
Shut off the water supply valve before disconnecting any water lines or hoses.
Wear work gloves when handling metal brackets, sheet metal edges, or sharp components.
Take photos with your phone before disconnecting any wiring harnesses or connectors.
Work in a well-lit area with enough floor space to lay removed panels flat.

Tools & Parts Needed

Essential Tools

Phillips #2 screwdriver
¼” nut driver
Needle-nose pliers
Multimeter
Flashlight or work light

Replacement Parts

Start relay
overload protector
condenser cleaning brush
¼” nut driver set
multimeter

Step-by-Step Repair Instructions

Step 1

Unplug the refrigerator from the wall outlet before doing anything — capacitors and live terminals near the compressor can cause serious shock. Pull the rear access panel by removing the four 1/4-inch hex screws, then locate the compressor at the bottom rear: it’s the black dome-shaped component. This gives you clear access to the two small parts most likely responsible for the clicking.

Step 2

Pull the start relay straight off the side pin of the compressor and give it a firm shake — a rattling sound means the internal contact has broken down and the relay can no longer give the compressor the jolt of current it needs to start, which is what causes the rapid clicking. Match the part number printed on the relay to the label on the compressor before ordering a replacement to ensure compatibility. Pro tip: buy OEM or a verified compatible relay, since cheap off-brand relays often fail within months.

Step 3

With the relay removed, test the overload protector clipped right next to it using a multimeter set to Rx1 continuity — a reading of zero or near-zero resistance means it’s good, but an open (no continuity) reading means it’s blocking current flow and must be replaced. The overload protector acts as a thermal fuse that trips when the compressor overheats, so a failed one will prevent any startup at all. Since both parts are under $20 each and work as a system, replace them together even if only one tests bad.

Step 4

While you have access to the rear of the unit, vacuum the condenser coils thoroughly using a soft brush attachment, working along the length of the fins to dislodge built-up dust and pet hair. Clogged coils trap heat and force the compressor to run hotter and harder, which accelerates overload protector trips and shortens compressor life. This step takes five minutes and is one of the most effective ways to prevent the problem from recurring.

Step 5

Plug the refrigerator back in and listen closely at the compressor: a steady hum that continues for several minutes indicates the compressor is running normally. A single audible click at startup followed by sustained running is the classic sign that a failed start relay was the root cause, since the new relay is now successfully initiating the start cycle. Monitor the unit for at least 30 minutes to confirm the compressor doesn’t cut out again before closing up the access panel.

Step 6

If the compressor hums briefly but then trips off again after you’ve already installed a new relay and overload protector, the compressor motor windings themselves have failed — the relay and overload are doing their job, but there’s nothing they can do to fix an internally shorted or open motor. At this point the repair requires a certified technician to replace the compressor, which typically costs $400–$700 in parts and labor. On an older unit, compare that cost against the price of a new refrigerator before committing to the repair.

Where to Buy Replacement Parts

Find genuine OEM and aftermarket replacement parts for your Frigidaire FFTR1821TS (Top Freezer) on Amazon:

When to Call a Professional

If the issue persists after completing all steps above, the problem may involve the sealed refrigerant system, a failed main control board, or wiring that requires specialized diagnostic equipment. Contact a licensed appliance technician — attempting sealed-system repairs without EPA 608 certification is illegal and unsafe.

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How Much Does This Repair Cost?

DIY parts for fixing a clicking compressor on the Frigidaire FFTR1821TS typically run between $20–$150, depending on whether you need a start relay, capacitor, or overload protector. A professional service call for the same repair usually costs $150–$300 in labor alone. Tackling this repair yourself can save you $100–$250 or more.

“` ## Frequently Asked Questions ### Why is my Frigidaire FFTR1821TS compressor clicking but not running? Clicking without the compressor running usually points to a failed start relay, which is a small component that gives the compressor the boost it needs to start. Replacing the start relay is typically the first and most affordable fix to try. ### Is it safe to keep using my refrigerator while the compressor is clicking? It is not recommended, as repeated failed start attempts can overheat and permanently damage the compressor. Address the issue quickly to avoid a much costlier repair. ### How much does it cost to fix a clicking compressor on a Frigidaire FFTR1821TS? A replacement start relay typically costs between $10 and $30 and is a straightforward DIY repair. If the compressor itself has failed, professional replacement can run $200 to $400 or more.

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