A refrigerator that stops cooling can spoil hundreds of dollars of food fast — but many fridge problems have a straightforward fix. This guide covers the 8 most common refrigerator problems, how to diagnose each, and when to bring in a professional.
Safety first: Unplug the refrigerator before cleaning coils or inspecting the fan, and never bend refrigerant lines.
1. Refrigerator not cooling
The most common cause is dirty condenser coils. Dust-caked coils can't release heat, so the fridge runs warm.
- Vacuum the condenser coils (behind or beneath the unit) every 6–12 months.
- Check the condenser fan — if it's not spinning, cooling suffers.
- Confirm the vents inside aren't blocked by food.
2. Fridge is warm but freezer is cold
Usually a failed evaporator fan or a frosted-over evaporator coil (a defrost-system problem). See our dedicated guide: Fridge Not Cold But Freezer Is.
3. Refrigerator leaking water
- Clogged defrost drain is the #1 cause — flush it with warm water.
- Check the water-supply line to the ice maker/dispenser for leaks.
- Level the fridge so the drain pan sits correctly.
4. Ice maker not working
- Confirm the water supply line is connected and the shutoff valve is open.
- Check for a frozen fill tube.
- Make sure the ice maker's on/off arm or switch is in the ON position.
5. Refrigerator is too cold / freezing food
- Check the temperature setting (aim for 37°F fridge / 0°F freezer).
- A stuck damper or faulty thermistor can overcool the compartment.
6. Refrigerator running constantly
- Dirty coils and worn door gaskets make the compressor work nonstop.
- Test the door seal by closing a dollar bill in it — if it slides out easily, replace the gasket.
7. Refrigerator making noise
- Buzzing/humming is often the compressor or a fan — usually normal.
- Loud rattling can be the condenser fan hitting debris.
- Knocking may signal a failing compressor (call a pro).
8. Refrigerator light not working
Simply replace the bulb, or check the door switch that turns the light on and off.
When to call a professional
Refrigerant/sealed-system work, compressor replacement, and control-board repairs require a technician and specialized tools. If your fridge still won't cool after cleaning the coils and checking the fan, True Appliance Repair connects you with same-day local technicians for every brand — Samsung, LG, Whirlpool, and more. Call 1-888-298-3714.
Frequently Asked Questions
Why is my refrigerator not cooling but the light is on? The light runs on a separate circuit from the compressor. The most likely causes are dirty condenser coils, a failed condenser or evaporator fan, or a defrost-system problem freezing the coils.
Is it worth repairing a refrigerator? If the fridge is under ~10 years old and the repair costs less than half the price of a new one, repair is usually the better value. Most common repairs run $89–$299.
How often should I clean my refrigerator coils? Every 6–12 months — more often if you have pets. It's the single best thing you can do to keep a fridge cooling efficiently.
What temperature should my refrigerator be? 37°F (3°C) for the refrigerator and 0°F (-18°C) for the freezer.