Er BN
LG Refrigerator
Severity: MinorWhat Does This Error Mean?
Er BN on an LG refrigerator indicates a fault with the ice bin temperature sensor. This sensor monitors the temperature inside the ice storage bin to ensure ice is being stored at the correct temperature. When the sensor fails or reads outside its expected range, Er BN is triggered and ice production may pause as a precaution. The main refrigerator and freezer cooling are not affected by this error.
Affected Models
- LRMVS3006S
- LRFXS2503S
- LRFOC2606S
- LG French door refrigerators with in-door ice maker and dedicated bin temperature monitoring
- LRFWS2906S
Common Causes
- Bin temperature sensor (thermistor) has failed and is sending readings outside the acceptable range
- Wiring to the bin temperature sensor has a break or the connector has come loose
- Ice buildup around the sensor probe is insulating it and causing incorrect temperature readings
- Condensation or moisture has entered the sensor connector and is causing intermittent false readings
- Ice maker control board has a fault affecting the sensor input circuit for the bin temperature
How to Fix It
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Turn the ice maker off, wait 30 seconds, and turn it back on. Many minor sensor faults clear with a reset. If Er BN clears after the reset and ice production resumes, a temporary sensor spike was the cause.
Monitor over the next 24 hours — if Er BN returns, the sensor fault is persistent and needs investigation.
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Remove all ice from the bin and inspect the inside of the ice compartment for unusual ice buildup. Ice forming directly on the sensor probe creates insulation that causes incorrect temperature readings. Clear any ice from around the sensor if visible.
The bin temperature sensor is usually a small probe mounted inside the ice compartment. It looks like a small metal-tipped rod.
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Check the ice compartment door seal if accessible. A poor seal allows warm moist air into the compartment, which condenses and freezes on the sensor, disrupting readings. Inspect the compartment door for a proper seal.
A worn ice compartment door gasket on LG in-door ice maker models is a common cause of condensation-related sensor faults.
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Perform a power reset. Unplug the refrigerator for 5 minutes and restart. This fully resets both the main control board and the ice maker control board, clearing any stored error states.
A power reset is more thorough than just turning the ice maker switch off and on — it resets all control board memory.
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If Er BN persists after all reset attempts, the bin temperature sensor has failed and needs replacement. Contact LG support or a certified technician to identify and replace the sensor for your specific model.
Provide your full model number to LG or a parts supplier — the bin temperature sensor part number varies between model series.
When to Call a Professional
Ice bin temperature sensor replacement inside an LG in-door ice maker requires disassembling the door ice maker compartment. A certified LG technician can access and replace the sensor or ice maker assembly. Expect $100 to $220 for sensor replacement including labor.
Frequently Asked Questions
Is Er BN a serious error on an LG refrigerator?
No — it is a minor error affecting only the ice maker system. Your food remains safe and the main cooling functions normally. The ice maker pauses as a precaution when it cannot verify bin temperature. Fix it when convenient — it does not require emergency attention.
Can I still get ice while Er BN is showing?
No — the ice maker typically pauses production when Er BN is active because the bin temperature cannot be verified. Any ice already in the bin is still accessible through the dispenser. New ice will not be made until the fault is cleared.
How does the bin temperature sensor affect ice quality?
The bin temperature sensor helps the control board verify that ice is being stored cold enough to remain solid and separate. If the bin temperature is too warm, ice clumps together. The sensor allows the system to detect warming events — such as a compartment door left open — and alert the user or pause ice production.