A refrigerator that is not cooling is usually caused by dirty condenser coils, a faulty evaporator fan, a failed start relay or compressor, a thermostat fault, blocked vents, a worn door seal, or a cooling off mode that has been switched on by mistake. The freezer may still feel cold while the fridge compartment warms up, because most refrigerators make cold air in the freezer and move it into the fridge with a fan and a vent. When that movement stops, the fridge warms first.
This guide explains the common causes and what you can check safely. If your refrigerator has stopped cooling in Staten Island, call us to book a diagnostic visit with Staten Island Appliance Repair.
First, check the simple things
Check that the refrigerator is plugged in, that the temperature controls are set normally, and that the door closes fully. Listen for the compressor hum and the freezer fan, and check for frost on the freezer back wall. Note those observations before you call. Do not pull the refrigerator apart, and do not try to open the sealed cooling system.
Dirty condenser coils
Condenser coils release heat from the refrigerator. When they are covered in dust, pet hair, or lint, they cannot release heat well, and the refrigerator has to work harder to stay cold. Over time it may stop holding temperature at all.
The coils are usually at the back or underneath, behind a grille. If you can reach them safely, with the power off, clean loose dust with a soft brush. If they are hard to reach, or the refrigerator is built in, leave the cleaning to a professional.
Faulty evaporator fan
The evaporator fan moves cold air from the freezer into the fridge compartment. If the fan fails, or ice builds up and stops the blades turning, the freezer may stay cold while the fridge warms up. You may hear a scraping or buzzing noise from the freezer, or nothing at all where you used to hear the fan.
Ice build up on the back wall of the freezer is a common sign. Do not chip ice away with a knife or screwdriver, as that can puncture the cooling tubes. A professional can check the fan, defrost system, and damper safely.
Failed start relay or compressor
The compressor pumps refrigerant around the cooling system, and the start relay helps it start. If the relay fails, the compressor may click and then stop. If the compressor itself has failed, the refrigerator will not cool in either compartment, and the repair is a major one.
Compressor and sealed system work needs a qualified professional. Do not try to test or replace these parts yourself. A technician can test the relay and compressor and tell you whether the repair is worth doing. For an older refrigerator, a compressor fault is often the point where replacement becomes better.
Thermostat and temperature controls
The thermostat and sensors tell the refrigerator when to cool and when to stop. If one fails, the refrigerator may run constantly, may not run at all, or may cool unevenly.
A faulty control board can cause similar symptoms, since boards manage the fan, compressor, defrost cycle, and sensors. Diagnosis needs testing, because a board is often blamed when the real fault is a sensor or a fan.
Blocked vents and door seal problems
Cold air reaches the fridge through vents at the back of the freezer and the fridge. If food or ice blocks those vents, cold air cannot move, and the fridge warms up even though the freezer is cold. Check that the vents are clear.
The door seal, also called a gasket, keeps cold air inside and warm air outside. If it is torn or warped, warm air leaks in and frost can build up. Feel for cold air leaking around the door edge, and look for gaps or tears. Clean it gently with warm soapy water. If it is damaged, it may need replacing.
Cooling off mode, and what the display means
Some refrigerators have a cooling off mode, also called demo mode or shop mode. In this mode the lights and display work, but cooling, ice making, and the water dispenser are switched off. It can be switched on by mistake and can make a healthy refrigerator look broken.
On Samsung refrigerators, the display may show OFF when cooling off mode is on. This is not a fault. It can usually be switched back on by following the steps in the manual for your model.
On Samsung refrigerators, 21E means a freezer fan error. On LG refrigerators, Er FF or FF means a freezer fan error, where the freezer fan motor is not operating normally, often because it is locked by ice or the motor has failed. Note the code, with the brand and model, and give it to the technician.
Freezer cold but fridge warm, explained
Freezer cold but fridge warm is the most common refrigerator symptom. Most refrigerators make cold air in the freezer only. A fan then moves that cold air into the fridge through a vent. If the fan fails, the damper sticks shut, the vents are blocked, or ice stops the airflow, the freezer stays cold and the fridge warms up.
Food safety while the fridge is warm
Food safety matters as soon as a refrigerator stops cooling. The guidance below comes from FoodSafety.gov, in its page Food Safety During Power Outage, reviewed Aug 8, 2024. That guidance is framed as a power outage rule, and it is used here in that same sense.
A refrigerator will keep food safe for up to 4 hours during a power outage, if the door is kept closed as much as possible. Discard refrigerated perishable food such as meat, poultry, fish, eggs, and leftovers after 4 hours without power. A full freezer will hold temperature for about 48 hours, and a half full freezer for about 24 hours, if the door stays closed. Never taste food to check whether it is safe.
What to do next
Note the brand, model, and age, what the display shows, whether the freezer is cold, and whether there is frost on the freezer back wall. Then call us to book a diagnostic visit with Staten Island Appliance Repair. The business serves Staten Island, NY. Its address is 205 Ridgecrest Ave, Staten Island, NY 10312. The diagnostic fee is $80 for standard brands and $95 for elite and premium brands.
Frequently Asked Questions
Why is my refrigerator not cooling but the freezer is cold?
Most refrigerators make cold air in the freezer and move it to the fridge with a fan and a vent. If the fan fails, the damper sticks shut, or ice stops the airflow, the freezer stays cold while the fridge warms up.
What does Samsung OFF mean on a refrigerator display?
Samsung OFF means cooling off mode, also called demo mode, is on. Cooling, ice making, and the water dispenser are switched off. It is not a fault.
What does Samsung 21E mean?
Samsung 21E means a freezer fan error. The fan may be locked by ice, or the motor may have failed.
What does LG Er FF or FF mean?
On LG refrigerators, Er FF or FF means a freezer fan error. The fan motor is not operating normally, often because it is locked by ice or the motor has failed.
How long will food stay safe if my fridge stops cooling?
FoodSafety.gov says a refrigerator keeps food safe for up to 4 hours during a power outage, if the door is kept closed. Discard refrigerated perishable food after 4 hours without power. A full freezer holds for about 48 hours, and a half full freezer for about 24 hours.
Why is there frost on the back wall of my freezer?
Frost on the freezer back wall often points to a defrost, fan, or damper problem. Do not chip ice away with a knife or screwdriver.
Should I unplug my refrigerator if it is not cooling?
Unplugging will not fix a failed fan, relay, or compressor fault, and it lets food warm faster. Keep the doors closed and book a diagnostic visit.