Repairing Guides

how to repair fridge compressor

by Evelyn Hayes Published 3 years ago Updated 2 years ago
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How to Fix It

  • Evaluate the Location of the Fridge. The first thing to check is the easiest and also most obvious. ...
  • Inspect the Compressor Unit. If the location of your fridge is not the cause of the problem, the next step is to give the compressor unit an inspection to check ...
  • Check the Temperature Control Thermostat. ...
  • Check the Evaporator Fan. ...
  • Refrigerant Leaks. ...

Part of a video titled Troubleshooting Compressor Problems in Refrigerators
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You'll need to replace the PTC relay. If the start relay is okay you may have a defective compressorMoreYou'll need to replace the PTC relay. If the start relay is okay you may have a defective compressor unfortunately. You'll need to get a service technicians help to replace the compressor.

Full Answer

How can you tell if your refrigerator compressor is bad?

  • loud noise coming from the front of the fridge
  • not cooling properly,
  • burning smell when you open the door
  • frost on the back wall.

How do you replace a refrigerator compressor?

Remove the Old Compressor

  1. Empty the Fridge. Clean out the fridge. Take everything out of the fridge and put it into coolers with ice packs. ...
  2. Move the Unit. Pull the fridge out. You have to access the back of the fridge in order to work on the compressor. ...
  3. Take Off the Guard Plate. Remove the guard. ...
  4. Remove the Compressor. Find and remove the compressor. ...
  5. Photograph. Take pictures. ...

How to fix a locked up refrigerator compressor?

These are the common issues that cause AC compressor failure:

  • Dirty coils.
  • Blocked suction lines.
  • Low refrigerant charge.
  • Incorrect suction line size.
  • Too much refrigerant.
  • Electrical problems.
  • Contaminants in the system.
  • Inadequate oil lubricant.

Why is my refrigerator compressor not working?

There are a few things you can try before calling a repairperson:

  1. Turn down the freezer’s temperature setting to see if the fridge kicks on. ...
  2. Make sure there is sufficient airflow around the fridge. You should have at least 3 inches of air space at the back and 1 inch at the top to ...
  3. Clean the exterior coils, following the manufacturer’s instructions — this is also to prevent overheating.

More items...

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What causes a fridge compressor to fail?

Too Little or Too Much Refrigerant In the event that the amount of refrigerant in the system is not perfect, it could create too much pressure or strain and lead to compressor failure. Too little refrigerant is most likely caused by an insufficient charge from the last technician, or from a refrigerant leak.

What do you do when your refrigerator compressor stops working?

4 steps to reset a refrigerator compressorUnplug your refrigerator. ... Turn off the refrigerator and freezer from the control panel. ... Reset your freezer and fridge temperature settings. ... Wait for the refrigerator temperature to stabilize.

How do you know if your fridge compressor is broken?

Pay attention for half an hour. If you do not hear it, then there is an issue. If you do hear the compressor working but your fridge is not cold, or you hear it running constantly without shutting off, then it is likely there is an issue with the compressor as well.

How much does it cost to repair compressor in fridge?

Compressor Issues Replacing the compressor is one of the pricier refrigerator repairs. Including labor, refrigerator compressor costs can run between $250 and $650, and the price of a new compressor averages between $100 and $500.

Is it worth replacing a compressor on a refrigerator?

Well, if the refrigerator has turned more than 10-15 years, there is no point of investing money on the repairing. A new compressor will cost half of the total cost of a refrigerator. So, basically, you can spend a little more and buy a brand new refrigerator equipped with a new compressor.

What is the first thing to check when refrigerator stops working?

The first thing to check is the breaker (in your home's electrical service panel) of the circuit serving the fridge. Most homes have a dedicated 20-amp circuit for the fridge alone, while older homes may have it on a general kitchen circuit.

Why is my refrigerator running but not cooling?

The most common reason why a refrigerator is not cooling is a problem with the evaporator coils. Over time, evaporator coils can become covered with ice, which prevents the coils from working properly. If the coils are covered in ice, the ice will need to be defrosted to fix the problem.

Why my refrigerator is not getting cold?

Clogged coils can cause poor cooling. Check to make sure nothing is stuck in the condenser fan and that it spins freely (models with coils on the back won't have a fan). To do this, unplug the fridge and pull it out. Clean the fan blades and spin the fan by hand to see if it's stuck.

How long does a compressor last in a refrigerator?

Although plans for a replacement should start around eight years of service, a well-maintained compressor can reach to ten years and beyond. As it ages, efficiency loss is gradual at first.

Is a refrigerator worth repairing?

Two good rules of thumb to keep in mind are that if repairing your fridge costs less than half the price of buying a new one, it's generally worth making those repairs.

What is the average life of a refrigerator today?

How Long Do Refrigerators Last on Average? Estimates range in terms of how long fridges last; some sources say 10 years while others say as long as 25 years. According to the United States Department of Energy, refrigerators last approximately 12 years.

How old do refrigerators last?

between 10 and 20 yearsMost refrigerators are designed to last between 10 and 20 years. If you're having any of the other problems on this list and the fridge is over ten years old, you'll probably save more money in the long run by simply replacing it. Otherwise, you could sink money into repairs for a fridge that's already on its way out.

How do you test a refrigerator compressor?

1:477:14How to Test the Compressor on your Refrigerator - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow the first thing we're going to do is start with the two bottom ones and the two bottom ones you'MoreNow the first thing we're going to do is start with the two bottom ones and the two bottom ones you're gonna get a reading of right around 10.

How do I know if my compressor is bad?

What Are the Signs and Symptoms of a Bad A/C Compressor?A Lack of Hot Air Being Released Outside. ... Loud or Strange Noises From the Unit. ... Failure of the Compressor to Turn On. ... Power. ... Dead Compressor. ... Capacitor and Starter Relay Problems. ... Dirty Coil and Filters. ... Circuit Breaker Tripping.More items...•

What does a fridge compressor sound like?

Compressors make low humming or buzzing sounds as part of their normal operation. But if the refrigerator noise gets louder and louder to the point where you can hear it from the next room, contact a licensed technician. Compressors are typically expensive to repair or replace and not a DIY job for homeowners.

Step4. Enter diagnostic test mode

If the condenser fan wasn’t running in Step 2, the refrigerator may have a defective electronic control board or a bad temperature sensor.

Step 5. Check the thermistor

A bad thermistor prevents the compressor from running in normal operating mode.

Step 6. Check continuity from the electronic control board through the compressor circuit

With the refrigerator unplugged, remove the screw that holds the control box.

Step 7. Check continuity on the control board harness

Even if the wires look ok, check continuity in the control board harness.

What Causes a Refrigerator Compressor to Fail?

The following are factors that cause the failure of a refrigerator compressor:

What Happens When a Refrigerator Compressor Fails?

When the compressor of a refrigerator fails, the first thing that happens is a rising internal temperature. Food will go bad, and there will be no cold water. This is even though the lights of the refrigerator are working. Sometimes, you may even hear the compressor running, but it is not working.

How Does a Failing Refrigerator Compressor Sound?

A failing refrigerator compressor makes a loud buzzing sound. Sometimes, it sounds like a loud humming sound. The sound may be continuous, so if you hear it from your compressor, it is failing.

Recap

If you have a refrigerator compressor failure issue on your hands, this article will guide you to fix it. Refrigerator compressors are technical components and tend to be expensive. But if you compare the cost of replacing it with that of a new refrigerator, it may be better to buy a new refrigerator.

How to Know If Your Refrigerator Compressor Is Bad – Quick Guide

To know if a compressor is bad, check for strange noises, clicking noise, overheating, or lack of cooling. Different issues lead to the failure of a compressor, and we will explain each one.

Causes of a Bad Compressor

A faulty start relay, low refrigerant, dirty coils, or just age can cause the compressor to get damaged. It is crucial to check these factors to determine which is causing the bad compressor.

Recap

It is important to fix a bad refrigerator compressor. The reason is that it is the center of the refrigerator’s functions. So if your refrigerator is to work optimally, the compressor should function well.

How to Reset Your Refrigerator Compressor

First, you’ll need to have access to the outlet where your refrigerator is plugged in. If your fridge or freezer blocks it, you’ll need to move it out.

Supplies needed to Reset Your Refrigerator Compressor

No supplies are needed to reset your refrigerator compressor. All it takes in most cases is a bit of heavy lifting to move and unplug the fridge.

What does a Refrigerator Compressor do?

The refrigerator compressor’s job is to move refrigerant through your fridge to keep it cold. It cycles cold air through the fridge and cycles hot air out of the appliance with the help of the condenser, located on the back of your refrigerator, and the evaporator located on the inside.

Do refrigerators have a reset button?

Some refrigerators do have a reset button, though not all of them do. You might need to hold the button for 30 seconds by itself or in correlation with another button.

What does a refrigerator compressor do?

Your refrigerator compressor makes use of a low-pressure, gaseous refrigerant that helps keep your food cold. If you adjust the thermostat of your fridge for more cold air, your refrigerator compressor kicks in, causing the refrigerant to move through the cooling fans. It also helps the fans to push cool air into your freezer compartments.

How can I tell if my refrigerator compressor is not working?

Most people know what a functional refrigerator sounds like—there is a faint humming sound that intermittently comes and goes. Your refrigerator compressor is responsible for that humming sound.

4 steps to reset a refrigerator compressor

Resetting your refrigerator compressor is a useful option for anyone looking to defrost their machine or adjust its temperature. A reset can also sometimes resolve other internal issues, like malfunctioning timer cycles, so it's one of the first things you should try if your refrigerator seems to be having issues.

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How to tell if refrigerator compressor is failing?

One of the most obvious signs that your refrigerator’s compressor is about to fail is that it will run constantly yet still not get the freezer or refrigerator compartments to their normal operating temperatures. If it isn’t the compressor, the refrigerant system itself could be failing. The fridge trips the breaker.

How to reset a compressor?

How to Reset Your Compressor 1 First, find the power cord in the back of the fridge and then disconnect it from the wall. When the power goes off, you might hear a whoosh or even a light tapping noise. Give the fridge a couple of minutes to completely power down so that you can reset the compressor safely. 2 From here, set the fridge and the freezer controls to either “0” or “off” depending on your model. You can then plug the fridge back into the electrical outlet once again. With the power back on, adjust your freezer and fridge controls back to your desired settings. Most go from 0-9; a 5 might be the normal setting. 3 Lastly, you’ll need to give the fridge about a day to adjust and attain a stable temperature. If it isn’t doing so at the end of that day, your compressor is likely bad, and you’ll need to have it replaced if you don’t get a new fridge entirely.

What happens when the power goes off on a refrigerator?

When the power goes off, you might hear a whoosh or even a light tapping noise. Give the fridge a couple of minutes to completely power down so that you can reset the compressor safely. From here, set the fridge and the freezer controls to either “0” or “off” depending on your model.

Why does my refrigerator stop working?

When your refrigerator is on the fritz, the freezer can stop working, leaving you with food that doesn’t freeze properly and winds up spoiling. The compressor can be the lead cause of this.

What happens if your refrigerator doesn't have a compressor?

If it isn’t the compressor, the refrigerant system itself could be failing. The fridge trips the breaker. Whenever the refrigerator intermittently trips your circuit breaker, it can be a good indication that your compressor is starting to fail. The electric motor on a fridge generally draws in around 5 or 6 times its operating current ...

How to tell if compressor is bad?

If you notice that the engine is producing a slight humming noise and the temperature is slightly above what it should be in its normal range , the compressor is likely bad. Another way to check the compressor without having to take things apart is to pull the fridge off the wall and check the thermostat.

How much current does an electric refrigerator draw?

The electric motor on a fridge generally draws in around 5 or 6 times its operating current whenever it starts up. When the compressor starts to age, it can take longer and longer to get up to operating speed. This kind of prolonged period of inrush current can wind up tripping your breaker on a consistent basis.

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