Er IS
LG Refrigerator
Severity: ModerateWhat Does This Error Mean?
The Er IS error means the ice maker sensor in your LG refrigerator is malfunctioning. The sensor that monitors ice production and levels is not reading correctly. Ice making may stop, but the fridge and freezer should still cool normally.
Affected Models
- LRMVS3006S
- LRFXS2503S
- LFXS26973S
- Most LG refrigerators with built-in ice makers
Common Causes
- Faulty ice maker sensor giving incorrect readings
- Ice buildup around the sensor blocking proper detection
- Loose or corroded wiring connection to the ice maker sensor
- Ice maker assembly malfunction affecting the sensor
- Main control board not reading the sensor signal correctly
How to Fix It
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Turn off the ice maker using the on/off switch or button.
This is usually on the ice maker itself or on the front display panel.
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Unplug the refrigerator for 5 minutes to reset the control board.
This clears any temporary sensor glitches.
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Remove the ice bin and check for ice clumps around the ice maker.
Break up and remove any ice chunks stuck to the maker or sensor area.
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Plug the refrigerator back in and turn the ice maker on.
Wait 24 hours for the ice maker to complete a full cycle.
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If the Er IS error returns, the sensor or ice maker assembly needs professional service.
A technician can test the sensor with a multimeter to confirm the failure.
When to Call a Professional
If resetting and defrosting does not fix the issue, the sensor or ice maker assembly may need replacement. Contact LG support or a certified appliance technician. Expect repair costs of $150–$300 depending on whether just the sensor or the full ice maker is replaced. Your fridge is still safe to use — only ice making is affected.
Frequently Asked Questions
Will my LG fridge still work with the Er IS error?
Yes — the refrigerator and freezer will continue to cool normally. Only the ice maker function is affected. You can use ice cube trays as a temporary workaround. Get the sensor fixed when convenient.
What does the ice maker sensor do?
The ice maker sensor monitors the ice making process. It detects when the ice tray is full and when to harvest cubes. It also monitors the temperature to ensure proper freezing. When the sensor fails, the ice maker does not know when to make or release ice.
How much does it cost to fix the Er IS error on an LG fridge?
If just the sensor needs replacement, expect $100–$180 total. If the entire ice maker assembly is faulty, it can cost $200–$350. The sensor part alone is usually $20–$50. Labor to access and install it is the bigger cost at $80–$200.