An LG refrigerator that stops cooling can usually be traced to a handful of causes, and many are fixable at home. LG is known for its Linear Inverter compressors, which behave differently from conventional ones, so it helps to know what is normal before assuming a breakdown. Here is a complete, India-focused troubleshooting guide.
Quick Checks First
- Power and stabiliser: Make sure the socket is live and voltage is stable. LG Linear Inverter models tolerate fluctuation better, but a stabiliser is still wise in high-fluctuation areas.
- Temperature setting: Fridge around 3 °C to 4 °C, freezer at -18 °C. Check the panel hasn’t been changed by a child or during cleaning.
- Demo / Display mode: LG fridges have a demo mode (often “OFF” or a flashing display) that stops cooling. On many models, hold Refrigerator + Ice Plus (or Express Freeze) for about 5 seconds to toggle it off.
- Door and gasket: Confirm the door seals fully; a torn gasket lets warm humid air in continuously.
- Overloading and placement: Don’t block internal vents, and leave a gap behind the unit for heat to escape.
Common Causes and DIY Fixes
1. Blocked Airflow Between Freezer and Fridge
If the LG freezer is cold but the fridge compartment is warm, cold air isn’t circulating. Move food away from rear vents and check whether the evaporator fan is running. A knocking or silent fan usually means ice has built up.
2. Frost-Choked Evaporator (Defrost Problem)
When the defrost heater or sensor fails, frost covers the evaporator coil and cooling tapers off over a few days.
- Unplug the fridge and remove all food.
- Keep the doors open overnight to melt all ice; lay towels to catch water.
- Restart. If cooling fails again within days, the defrost components need replacement.
3. Dirty Condenser Coils
Dust accumulation on the condenser is very common in Indian homes and makes the fridge run hot and inefficient. Switch off, pull the unit out, and clean the rear/bottom coils with a brush or vacuum.
4. Refrigerant (Gas) Leak
If the compressor runs continuously but neither section cools, the sealed system may have lost refrigerant. This requires a licensed technician to locate the leak, repair it, and recharge — never a DIY task.
5. Linear Inverter Compressor Fault
LG’s Linear Inverter compressor is covered by a long warranty (often 10 years). If it fails, the fridge won’t cool at all and may show a relevant error code. Because it is usually warranty-covered, contact LG service rather than attempting repair.
LG Symptom Quick-Reference
| Symptom | Likely Cause | First Fix |
|---|---|---|
| Display in demo / OFF | Demo mode active | Hold Refrigerator + Ice Plus 5 sec |
| Freezer cold, fridge warm | Blocked vent / fan iced | Clear vents, full defrost |
| Both warm, compressor runs | Gas leak / dirty condenser | Clean coils; service for gas |
| No cooling, error code | Sensor / compressor fault | Decode code; call LG service |
| Cooling weak after power cut | Needs recovery time | Wait 4–24 hrs, keep doors shut |
If a code is showing on the panel, identify it with our LG refrigerator error codes guide before any further steps.
Helpful Replacement Parts
For owner-replaceable parts such as door gaskets, thermostats and fan motors:
Browse LG Fridge Spare Parts on Amazon India ↗
When to Call LG Service
Contact LG if the compressor runs non-stop without cooling (likely gas leak), an error code persists after a reset, you suspect a Linear Inverter compressor failure (usually warranty-covered), or the unit is still under warranty. Use the LG ThinQ app or the toll-free number to book doorstep service.
Related Guides
See the general refrigerator not cooling fix guide and, for Samsung owners, the Samsung refrigerator not cooling fix.
Frequently Asked Questions
Why is my LG fridge not cooling but the freezer works?
Cold air isn’t reaching the fridge section, typically due to a blocked vent or an iced-over evaporator fan. Clear the vents and do a complete manual defrost; if it returns, the defrost system needs service.
How do I turn off demo mode on an LG refrigerator?
On most LG models, press and hold the Refrigerator and Ice Plus (or Express Freeze) buttons together for about 5 seconds. The display will beep and exit demo mode, restarting the compressor.
My LG fridge stopped cooling after a power cut — is it broken?
Often not. After a power interruption it needs time to recover. Keep the doors shut and wait 4 to 24 hours. If it still won’t cool, check for an error code and inspect the condenser coils.
Is the LG Linear Inverter compressor covered under warranty?
Yes, LG typically offers a long compressor warranty (often 10 years) in India. If the compressor fails, contact LG service rather than attempting a replacement yourself.