Your LG fridge is likely warm while the freezer stays cold because of a frosted evaporator coil or a faulty evaporator fan motor. These components are responsible for circulating chilled air from the freezer compartment into the refrigerator section via a series of vents.
This specific issue is one of the most common service calls we receive at Appliance Repairs Online. Because LG refrigerators typically use a single cooling system to manage both compartments, any blockage in the airflow path results in a “split” temperature problem. While the freezer continues to produce frost, the fridge remains stuck at room temperature, putting your fresh groceries at risk.
Common Causes for LG Fridge Cooling Issues
Our technicians have 15+ years of combined industry experience serving Melbourne households, and have identified five common causes of this specific failure.
- Frosted Evaporator Coils
The evaporator coils are located behind the back panel of your freezer. If the defrost heater or thermostat fails, ice builds up on these coils. Eventually, the ice becomes so thick that air cannot pass through them to reach the fridge.
- Faulty Evaporator Fan
If you can hear your compressor running but don’t hear a “whirring” sound from the freezer, the fan might be dead. This fan is the engine that pushes cold air into the fresh food section.
- Blocked Air Vents
Sometimes the fix is as simple as moving a large tub of Greek yoghurt or a carton of milk. If you block the internal vents, the cold air stays trapped in the freezer.
- Damaged Damper Control
The air damper is a small mechanical door that opens and closes to let cold air into the fridge. If it is stuck closed, the fridge stays warm.
- Faulty Thermistor
The thermistor monitors the fridge temperature and tells the control board to send more cold air. If it sends the wrong reading, the system won’t know the fridge is warming up.
Troubleshooting Checklist for Melbourne Homeowners
Before calling a technician out to Frankston or Werribee, run through this quick diagnostic table to narrow down the problem.
| Symptom | Likely Cause | Difficulty of Fix |
| Heavy frost on freezer back wall | Defrost System Failure | High |
| Silent freezer (No fan noise) | Evaporator Fan Motor | Medium |
| Visual blockage of vents | Overstuffed Fridge | Easy |
| Clicking sound from the back | Damper Control Motor | Medium |
| Accurate freezer temp / Warm fridge | Airflow Obstruction | Easy |
Step-by-Step Local Fixes
If you are dealing with a warm fridge during a Melbourne heatwave, follow these steps to attempt a manual recovery.
- The Hard Reset: Unplug the fridge for 30 seconds. Sometimes the digital control board on LG models needs a reboot to recalibrate the damper motor.
- Clear the Vents: Ensure there is at least 5cm of space around the internal vents. Check for any ice crystals forming around the vent openings.
- Manual Defrost: If you suspect ice buildup, move your perishables to a cooler and unplug the unit for 24 hours with the doors open. This is a temporary fix but can confirm if a defrost component has failed.
- Check Door Seals: Use a five dollar note to check the suction of your fridge door seals. If the note slides out easily, warm Melbourne air is leaking in, causing the fridge to work overtime and eventually freeze up the internal components.
For more complex issues, you may need a professional. You can book a local appliance repair to have a specialist look at your unit. If your fridge is completely silent, you might be facing a compressor failure, which is a common known issue with certain LG Linear Compressor models.
Why Melbourne Weather Affects Your LG Fridge
Our local climate plays a massive role in appliance longevity. During intense Melbourne heatwaves in suburbs like St Kilda or Glen Waverley, your fridge has to work significantly harder to displace heat from the internal cabinet into an already sweltering kitchen. When ambient temperatures soar, the cooling system struggles to maintain the delta between the room and the fridge interior.
We often see a spike in “warm fridge” calls during the scorching January and February peaks. If your kitchen is not well ventilated during these hot spells, the heat buildup behind the unit can cause the condenser to overheat and the compressor to “trip” on its thermal overload protector. This results in the exact airflow issues we are discussing today, as the system fails to recover from the external heat stress. If you need immediate help during a summer surge, our emergency fridge repair service is available across the CBD and surrounding suburbs.
