Refrigerator Running but Not Cooling? 5 Common Causes & Fixes

What to Check When Your Fridge Stops Cooling

Opening your refrigerator only to find warm milk and soft ice cream is every homeowner's nightmare. Before you replace the entire appliance, understand that most cooling problems stem from small, inexpensive components.

Here are the 5 most frequent reasons why your fridge runs but fails to cool:

1. Dust-Choked Condenser Coils (কন্ডেনসার কয়েলে ময়লা) The condenser coils (located either at the back or underneath the fridge near the compressor) dissipate heat from inside the unit. If pet hair, lint, and kitchen dust cover these coils, heat cannot escape. The compressor overheats and shuts off before the cabinet reaches cold temperatures. * **Fix:** Unplug the fridge and use a coil brush or vacuum hose to gently brush away dust.

2. Faulty PTC Starting Relay or Capacitor (স্টার্ট রিলে নষ্ট) Do you hear a clicking sound every few minutes coming from the back of the fridge, but the compressor fails to start vibrating? That is the classic symptom of a burnt starting relay or overload protector. * **Fix:** A technician can test the relay terminals using a multimeter and replace it for ৳500 – ৳900.

3. Defrost System Failure in Frost-Free Fridges (ডিফ্রস্ট হিটার সমস্যা) In modern frost-free refrigerators (No-Frost), a defrost timer and heater melt frost every 8 to 12 hours. If the bimetal thermostat or defrost timer fails, thick ice accumulates over the evaporator coils inside the freezer wall, blocking air vents to the lower food compartment. * **Symptom:** Freezer is freezing hard, but the bottom fridge section is warm. * **Fix:** Replace the defrost sensor or bimetal thermostat.

4. Cracked or Loose Door Gasket (দরজার রাবার নষ্ট) If the magnetic rubber seal around the fridge door is warped or cracked, warm room air continuously leaks inside, creating heavy condensation and preventing the fridge from reaching low temperatures. * **Dollar Bill Test:** Close the fridge door on a paper note or currency bill. If it slides out easily without resistance, your gasket needs adjustment or replacement.

5. Refrigerant Gas Leak (ফ্রিজের গ্যাস লিকেজ) If the compressor runs continuously without stopping, the sides of the fridge feel cold or barely warm, and the freezer has no frost, the unit has likely suffered a refrigerant leak. * **Cost in Dhaka:** Leak repair, filter replacement, and gas recharge (R134a or R600a) usually costs between ৳1,500 and ৳2,400.

When Should You Call a Professional?

Never attempt to puncture ice with a knife or screwdriver—doing so will pierce the aluminum cooling plate and immediately ruin the gas piping.

If cleaning the coils doesn't resolve the issue within 2 hours, book an NID-verified refrigeration technician on kaajLagbe to diagnose your fridge with a digital multimeter and pressure gauges.