On a hot summer afternoon, you open your refrigerator in a hope to enjoy a glass of chilled juice. But you find that your refrigerator not cooling. What an unpleasant moment! Here are 10 possible reasons behind “why is your refrigerator not cooling enough or not cooling at all”:
1. Frosted evaporator coil
There are evaporator coils and circulating fan in the freezer zone of the refrigerator. Poor cooling can be a result of excessive frost development on the evaporating coils. Over time frost accumulates over the coils and fan. When frost gets accumulated over the evaporator coils, they get insulated. Due to this the circulating fan is unable to draw air over the frosted coils. There may still be a small amount of cooling because the frost over the coils, but with no air flow over the coils.This frost should be removed by manual defrosting or automatic defrost (in frost free refrigerators) for proper cooling inside refrigerator. .
2. Faulty evaporator fan
The fan circulates the cool air from the freezer to other compartments inside refrigerator. When evaporator fan stops working it cannot circulate cool air inside the food section. Due to which the freezer continues to be cold but food section does not cool.
Here are some Fan Motors you can find online:-
- Fan Motor Suitable for Godrej Frost Free Refrigerator (Genuine)
- Fan Motor Suitable for Samsung Refrigerators,- with 2 Pin Connector
- Fan Motor Suitable for LG/BPL Frost Free/Double Door Refrigerators- 3 Pin Connectors(Multi Color)(Match and Buy)
- Fan Motor Suitable for Videocon Frost Free Refrigerators-2 Pin Connector
- Fan Motor Suitable for Whirlpool Refrigerators (Black)
3. Out of order defrost system
In any frost free refrigerator there is a defrost system which controls the cooling and defrost cycle. The components of the defrost system are: a defrost timer and a defrost heater:
A defrost timer switches the refrigerator between the cooling and defrost mode. If it goes bad and stops at cooling mode, it causes excessive frost to build up on the evaporator coils which reduces the air flow. Or when it stops at the defrost mode it melts all the frost and does not go back to the cooling cycle.
Here are some defrost timers you can find online:-
- Samsung Double Door Refrigerator Defrost Timer
- Whirlpool W10822278 Refrigerator Defrost Timer
- Refrigerator Deforst Timer for Godrej Refrigerator – 8 Hours – 39121523SD00028 (Genuine)
- Spareworld Defrost Timer Compatible with LG Double Door Refrigerator (3+1) Pin
- Spareworld Defrost Timer Compatible with Videocon Double Door Refrigerator
A defrost heater melts the frost developed over the evaporator coil. But if it goes bad then excessive frost accumulates on coils reducing the cool air flow inside the refrigerator.
So when either of the 2 become faulty, the refrigerator does not understand when to cool and when to defrost.
4. Faulty compressor
A compressor is the heart of the refrigeration cycle. When it does not work properly then the entire cooling process does not even start. The job of the compressor is to compress the refrigerant from a low pressure cool vapor into high pressure hot vapors. This compressed refrigerant in the form of hot high pressure vapors then flows through the condenser where it get condensed into high pressure liquid. This liquid then flows through the evaporator coil where it evaporates and cools down to a low pressure vapor. Air flows over the cooling coils and keeps the refrigerator cool. So when the compressor is out of order, this refrigeration cycle does not even start.
5. Insufficient refrigerant level
If compressor is the heart , the refrigerant is the blood of the cooling cycle. Refrigerant leakage or under limit refrigerant also effects the cooling inside the refrigerator.
6. Dirt insulated condenser coils
When high pressure hot refrigerant condenses in the condenser, lot of heat is dissipated during this conversion. But when the condenser coil is dirty and loaded with debris, heat does not flow out of the coils properly. This heat stays inside the refrigerator and reduces the cooling.
7. Defective condenser fan
In your refrigerator there is a condenser fan that forces hot air out of the refrigerator. So when it goes bad the hot air cannot be released into the room and remains inside the refrigerator. Because of this the temperature inside the refrigerator shoots up. A faulty fan motor or defective fan blades prevent the condenser fan from working properly.
8. Defective start relay
A start relay is a small device located near compressor. It helps compressor in starting up. If the start relay is defective, then the compressor will not start and so the cooling process in the refrigerator will not commence.
Start Relay you can find online:-
- VINAYAK Refrigerator Start Relay for Universal(Brown)
- Pardzworld Compressor Relay(4 Pin) + Overload Protector(1/6th) Suitable for 165 LTR to 300 LTR Double Door Refrigerators
- SRTech™ Refrigerator Start Relay for Universal(Brown)
- ELECTROPRIME Universal Start Relay Refrigerator Freezer Compressor IC-4 Replacement Part Kit
9. Defective start capacitor
There is a start capacitor that gives boost to the compressor to start up. If this capacitor is burned out, the compressor might not start up and the refrigeration cycle will not commence to cool the refrigerator.
10. Faulty thermistor
A thermistor is a sensor that control the air temperature inside refrigerator and controls the start and stop of cooling cycle. If it goes faulty, then the refrigerator does not cool at all or cools continuously.
“Refrigerator not cooling” is a very common problem and can be taken care by good refrigerator repair professionals.
Here are some of the top selling fridges that we would recommend:
- Samsung 253L 3 Star Inverter Frost Free Double Door Refrigerator
- LG 284 L 3 Star Inverter Linear Frost-Free Double Door Refrigerator
- Whirlpool 300 L Frost-Free Multi-Door Refrigerator
- Godrej 290 L 3 Star Inverter Frost-Free Double Door Refrigerator
- Haier 320 L 2 Star Inverter Frost-Free Double Door Refrigerator
- Panasonic 335 L 2 Star 6-Stage Inverter Frost Free Double Door Refrigerator
- Bosch 288 L 3 Star Inverter Frost-Free Double Door Refrigerator
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It’s essential to note that these are just a couple of potential issues among many others. Other factors could include a malfunctioning compressor, blocked condenser coil, faulty thermostat, refrigerant leak, or malfunctioning temperature control board. If faced with inadequate cooling, professional assistance is recommended to diagnose and address the problem effectively.
When a refrigerator fails to cool properly, there are several potential reasons. Two common causes are a frosted evaporator coil and a faulty evaporator fan. Frost accumulation on the evaporator coils acts as an insulator, preventing proper cooling. Manual defrosting or automatic defrost in frost-free refrigerators is necessary to remove the frost. If the evaporator fan malfunctions or stops working, the freezer may remain cold, but the refrigerator section won’t receive sufficient cool air.
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It’s not uncommon for your fridge to be running a little warm after a long day at work or school. However, there are many possible reasons why your fridge may not be cooling properly.
Very good article. It helps me a lot to understand what wrong with my refrigerator.
If you notice condensation on the inside of the refrigerator, then there is probably something blocking the airflow.
Please my refrigerator Haier thermocool. Does not make any sound when it’s on
The lights are on but the fridge is not cooling
what could be the cause
The freezer compartment freezes well but the food compartment hardly cools. Could there be a problem with the cooling fan in the food compartment? On opening the lower door, no air circulates unlike the freezer compartment. What shoul d be dond ?
I read few posts on this web happy wheels site and I conceive that your blog is very interesting and has sets of fantastic information.
My refrigerator does not cool what can be the problem
The light is on inside the fridge and the sound to show that is on but is not cold what might be the cause
nand kishore dhayani Question solution it may be exist linkage (has hole )
in condenser and evaporator coil.
It caught my attention when you sai that a defected start capacitor will not power the compressor. My aunt’s refrigeration display case will not cool, and I wanted to know what could be the issue. I will let her know this os she can hire a technician to repair it.
My refrigerator cool above cabin but not cool in below cabin double door refrigerator mechanic attend three more time but not successful so the same problem continued. So please give the idia
Compressor of my refrigerator was changed by machanic and gas was filled. It started cooling but no ice formed in ice chamber. After 20 days it stoped cooling again. New gas was filled and temp in the ice chamber came down to -5 as noted by me. After one hour again refrigerator stopped working no cooling. What may be the cause?
When the temperature in the fridge warms up do you notice if the compressor and fans are still running or no? If you don’t hear a sound it could be the main control board. Did you check that out?
Hello. My refrigerator cools intermittently after refilling gas. What could be the Problem? My repairer told me it’s the evaporator. What do you Think?
The defrost heater is OK and the defrost thermostat is OK what control the defrost in inverter ref.