What to Do When Your Fridge Stops Cooling: Troubleshooting Guide
A fridge that stops cooling is a household emergency — food spoils within hours if the issue isn't addressed. Before calling a technician, there are several checks you can do yourself that may resolve the problem without a service call. This guide walks through the most common causes and their fixes in order from simplest to most complex.
Step 1: Check the Basics
Is the Fridge Plugged In and Getting Power?
Check the power cord is fully seated in the outlet. Check the circuit breaker for the fridge circuit hasn't tripped. Many fridges share a circuit with other appliances — if something else tripped the breaker, the fridge may have lost power. Test the outlet by plugging in another appliance.
Is the Temperature Dial Set Correctly?
Temperature controls can be accidentally bumped to a warmer setting. Check that the temperature dial or digital control is set to the correct range (3–4°C for the fridge, −18°C for the freezer).
Are the Vents Inside the Fridge Blocked?
Internal air vents circulate cold air throughout the fridge interior. If these vents are blocked by overpacking or food placed directly against them, some areas of the fridge won't cool properly. Clear a gap around all internal vents and check if performance improves.
Step 2: Check the Door Seals
Faulty door seals are one of the most common causes of a fridge that isn't cold enough. Test each seal by closing the door on a piece of paper and pulling it out — you should feel significant resistance. If the paper slides out easily, the seal is failing and warm air is constantly entering the fridge. A failing seal may also be visible as cracking, flattening or mould growth.
Door seals are replaceable. For most fridge models, replacement seals are available from the manufacturer or aftermarket suppliers.
Step 3: Check the Condenser Coils
Condenser coils at the back or base of the fridge release heat from the refrigeration cycle. If heavily coated in dust, they can't dissipate heat effectively and the fridge can't reach target temperature. Unplug the fridge, clean the condenser coils with a vacuum cleaner brush attachment or condenser brush, and plug back in. This is particularly important if the fridge hasn't been serviced for more than 12 months.
Step 4: Check That the Condenser Fan Is Running
Most fridges have a fan that blows air over the condenser coils. If this fan fails, the coils overheat and the fridge loses cooling capacity. The fan is usually at the back of the fridge or under a cover near the condenser coils. If you can hear the compressor running but can't hear or feel any fan operation, the fan motor may have failed.
Step 5: Check for Frost Buildup in the Freezer
On frost-free fridges that have developed a fault in their automatic defrost system, ice can build up around the evaporator coils inside the freezer compartment. This frost blocks the airflow that cools both the freezer and the fridge section. Symptoms: freezer may still be partially cold but fridge section is warm; you may notice a frost-caked wall at the back of the freezer.
Temporary fix: unplug the fridge for 24–48 hours to allow the ice to melt naturally (keep the doors open and have towels ready). If the fridge works normally after this, the problem will recur — the automatic defrost heater, defrost thermostat or defrost control board needs replacement by a technician.
When to Call a Technician
If the above steps don't resolve the issue, the most likely remaining causes are:
- Refrigerant leak: Low refrigerant means the system can't remove heat. Signs include the fridge running constantly without reaching temperature. Requires a licensed refrigeration technician.
- Failed compressor: The compressor is the pump at the heart of the refrigeration system. A failed compressor is usually the most expensive repair. If the compressor isn't starting (you hear a click then nothing), it may have failed or the starting capacitor or relay may need replacement.
- Faulty temperature sensor or control board
Repair or Replace?
If your fridge is over 10 years old and the repair cost exceeds $400–$500, replacement is often better value than repair. Contact Oceania Appliances for advice — we can help you assess your options. We carry quality-refurbished fridges with 3-month warranty and free Sydney delivery. Visit 2/14 Centre Place, Wetherill Park (open 7 days, 10am–8pm), call or WhatsApp 0422 489 492, or email support@oceaniaappliances.com.au.