Lg Refrigerator Error Code ER RT
Last updated: January 5, 2026 MEDIUM
⚠️ Safety Warning
- Unplug the appliance before attempting any repairs
- Never attempt repairs while the appliance is energized
- If you're unsure, contact a certified Lg technician
- Keep children and pets away during troubleshooting
🔧 Tools You May Need
- Multimeter
- Screwdriver set
- Work gloves
- Thermometer
- Level
- Condenser brush
What Does Error Code ER RT Mean?
Error code ER RT appears on Lg refrigerators when component failure occurs. This warning helps protect your food by alerting you to potential damage.
Common Causes
- freezer fan
- refrigerator fan
- ice maker fan
- compressor
How to Fix Error Code ER RT
Step 1: Reset Your Refrigerator
- Unplug the refrigerator from the power outlet
- Wait 2-3 minutes for the capacitors to discharge
- Plug the appliance back in
- Check if the error code has cleared
Diagnostic Checks for Refrigerator Error ER RT
| Diagnostic Check | Expected Result | If Failed |
|---|---|---|
| Check evaporator fan operation | Fan runs when door is closed | Replace evaporator fan motor |
| Inspect condenser coils | Coils clean, unobstructed airflow | Vacuum coils, ensure 2" clearance |
| Test defrost heater | Continuity when tested with multimeter | Replace defrost heater |
| Check door seals/gaskets | Seals tight, no gaps (dollar bill test) | Replace door gasket |
| Verify compressor operation | Compressor runs, gets warm to touch | Check start relay/overload |
💡 Pro Tips from ErrorCodeHub
The Coil Cleaning Secret: Dirty condenser coils make your compressor work 25% harder. Clean them every 6 months and watch your energy bill drop.
Frequently Asked Questions
What does Lg error code ER RT mean?
Error code ER RT appears on Lg refrigerators when component failure occurs. This warning helps protect your food by alerting you to potential damage.
Can I fix error code ER RT myself?
Many ER RT errors can be fixed with basic troubleshooting. Start with a reset, then check common causes.
How much does it cost to fix error ER RT?
Repair costs typically range from $50-$300 depending on the cause.
Should I call a technician for error ER RT?
If basic troubleshooting doesn't work, or you're uncomfortable with repairs, contact a certified technician.
More Lg Refrigerator Error Codes
When to Call a Professional
Consider contacting a certified Lg technician if:
- The error persists after troubleshooting
- You're not comfortable with DIY repairs
- The repair involves electrical or gas components
- Your appliance is still under warranty
Find a technician: Call Lg support or search for certified repair services in your area.