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Refrigerator Not Cooling? Your Evaporator Might Be the Problem

Sometimes, some things are more frustrating than a warm fridge. In other words, it is so disappointing when you want to eat something, open the refrigerator, and discover that all the chilling is gone. Your frustration level rises at that time, and your mood becomes off. All your eatables have become lukewarm, and they won't taste as good now as they did before. Your entire day will be ruined, especially if it happens early in the morning. Moreover, you know that your fridge has stopped working and needs to be repaired. Your refrigerator needs repairing or might have to be replaced by a new one. Do you know what's the worst-case scenario? Sometimes, you don't notice early that your fridge has stopped cooling things. This gets highly frustrating when you are about to cook something and require some vegetables to put into your dish. However, you cannot order food online daily. So, you have to take some immediate action to fix this as quickly as possible.

Common Cooling Issues and How the Evaporator Plays a Critical Role

General cooling issues in refrigerators often come from issues with the evaporator, vital for removing heat from the fridge's inside. When working correctly, the evaporator coils, supported by a fan, ease the cooling function. However, if the coils get frosted over, airflow is restricted. Thus, cooling ability drops significantly. Besides, other problems, such as a malfunctioning evaporator fan, a clogged drain, or a low freezing level, can also impair the evaporator's performance. These problems can take your refrigerator to inconsistent temperatures, eatables spoilage, and extra moisture. Proper maintenance and on-time repairs of the evaporator system are essential to ensure the best refrigerator performance.

How a Refrigerator Evaporator Works

Refrigerator evaporator's primary job is to suck heat from the refrigerated space, leading the refrigerant to change from a liquid to a gas (evaporate), thus chilling the fridge from the inside. This heat absorption decreases the cooling on the refrigerator's internal side, keeping eatables at the desired temperature.

Importance of Air Circulation and Heat Exchange

Air circulation and heat production are essential for maintaining comfortable and healthy indoor surroundings. Air circulation distributes heat and moisture equally. On the other hand, heat exchange allows for efficient energy transfer, preventing overheating or extra chilling. Perfect air circulation eliminates flat air and produces fresh air, enhancing air quality and reducing the chances of mold production. However, we promise that by the end of this blog, you'll learn how to spot evaporator issues and what to do about them.

Signs Your Evaporator Is Failing

The fridge is Warm, but the Freezer is Still Cold

An evaporator, which is coming to an end, is often indicated by a warm refrigerator while the freezer is still chilled. It's a sign that it can lead you to multiple refrigerator problems. This includes a faulty evaporator fan motor, blocked spaces, or a pile-up of frost on the evaporator coils. Other possible culprits include a faulty thermostat, a problematic compressor, or untidy condenser coils.

Frost or Ice Buildup on Evaporator Coils

Frost or ice piled up on an evaporator coil indicates an issue with the air-conditioning system. This is generally related to insufficient airflow or low refrigerant levels. However, the usual reasons include a clogged air filter, an untidy evaporator coil, a faulty blower, or a low refrigerant charge.

Strange Noises (e.g., fan struggling)

Unfamiliar sounds from a refrigerator can be caused by several problems, including malfunctioning fans, the compressor, or even loose parts. While some sounds are normal, noisy or loud sounds require a check.

Fridge Cycling Too Frequently or Not at All

A refrigerator cycling too often or thoroughly not can indicate an issue with its cooling system. Extra cycling or the compressor running constantly can happen for many reasons. Those reasons can be either of these:

• An untidy condenser

• A malfunctioning thermostat

• Air leaks through the door.

Besides, if the fridge isn't cycling altogether, the possibilities are that the thermostat is frozen, the compressor is problematic, or there is a total refrigerant leak.

Common Evaporator-Related Problems

 • Faulty Evaporator Fan Motor

If the fan is not working or becomes noisy, cold air can't circulate properly in the fridge, leading to a warm refrigerator. In most cases, changing the malfunctioning motor resolves the issue.

 • Iced-over Evaporator Coils

If moisture builds up on the evaporator coils, it restricts airflow. If this problem occurs, check the defrost heater and thermostat to solve it.

 • Refrigerant Leak

If your fridge has an unknown leakage, you must contact a trained professional to have it fixed.

How to Fix the Evaporator Issue

Step-by-step DIY Checklist:

1. Check airflow and listen to the Sound of the fan

Open the refrigerator door and try to listen to the evaporator fan running. The fan has an issue if you notice a very low or no airflow sound.

2. Inspect Coils for Frost Buildup

Check the evaporator coils located behind the freezer's panel. The fridge's chilling can decrease if the frost is heavy or ice has built up.

3. Test Continuity of Fan Motor (Using a Multimeter)

Use a multimeter to check whether the fan motor has electrical continuity. If there is none at all, it means it's the correct time to replace it.

4. Visual Inspection of Refrigerant Lines

If you find oil stains or damage on refrigerant lines, it means there is a leakage that needs professional fixing.

How to safely clean evaporator coils

A refrigerator should be cleaned every two to three months and replaced if it shows any signs of the above-mentioned problems.

Steps to Safely Cleaning Evaporating Coils

1. Unplug the refrigerator to prevent yourself from getting an electrical shock.

2. Remove the cover panel, which should be either on the back of the refrigerator or underneath it. (Tip: If the coils are attached at the back of the fridge, remove them with the help of a screwdriver)

3. Gently clean the coils with a brush. Be careful not to bend the coils.

4. Wipe down. If needed, clean the coils with a wet sponge or cloth. To do this, mix detergent into a small amount of water. Then, dab the cloth or sponge into it, squeeze it, and clean the coils. But remember to dry the coils before plugging back the fridge to stay safe from any possible electric shocks.

5. Reassemble and plug in the refrigerator and check whether everything is working correctly.

Why a Full System Check is Important Before Blaming Just the Evaporator

If your refrigerator is not performing its function of cooling, then don't directly blame the evaporator. But first, check the other parts of the fridge to know whether they are the real culprits in this regard or if it is the evaporator.

What you Can Safely do at Home

First, try to fix your refrigerator's cooling, as mentioned above. If nothing works, call a technician.

When Professional Service is a Better Option

If you have tried everything at Home and nothing seems to work, seek professional service.

Expected Cost Ranges for Evaporator Repair or Replacement

Typically, the repair cost is 200 dollars to 1,000 dollars. However, the expected cost of replacement is 600 dollars to 2,000 dollars. Moreover, the cost varies according to the model of your fridge. Besides, the particular cost depends on the intensity of the damage, the kind of fridge used, and the service charges in your area.

Conclusion:

Refrigerators are a basic need in our lives. If they need repairing or replacement, don't delay—get this job done as soon as possible.

Don't ignore a warm fridge—it could be a failing evaporator. Encourage timely troubleshooting or professional inspection.

So, take the help of this guide and apply these instructions to your refrigerator to avoid hardships regarding your refrigerator.

 

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