Er SH
LG Refrigerator
Severity: CriticalWhat Does This Error Mean?
The Er SH error means your LG refrigerator's humidity sensor has a fault. The sensor that monitors moisture levels in the fresh food compartment is not reading correctly. This can affect how the fridge manages its internal environment.
Affected Models
- LRMVS3006S
- LRFXS2503S
- LRFDS3006S
- LG French door refrigerators with humidity-controlled crisper drawers
Common Causes
- Humidity sensor has failed and is giving out-of-range readings
- Wiring to the sensor is loose or corroded
- Excessive moisture in the fridge causing the sensor to short
- Temperature extremes in the fridge affecting sensor accuracy
- Main control board failing to read the sensor signal correctly
How to Fix It
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Unplug the refrigerator for 60 seconds and plug it back in.
A reset clears temporary sensor reading errors.
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Check that the fridge door seals are intact.
A leaking door seal lets warm, humid air in which can overwhelm the sensor.
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Remove any standing water or excessive moisture from inside the fridge.
Wipe the interior walls and check that drain holes in the crisper area are clear.
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If Er SH returns after the reset, the sensor needs testing.
A technician can test the sensor's resistance with a multimeter.
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Replace the humidity sensor if confirmed faulty.
The sensor part is typically inexpensive — under $30 — but labor adds to the total.
When to Call a Professional
Humidity sensor replacement requires locating the sensor inside the fridge compartment. The repair itself is straightforward but requires the correct part number. Expect costs of $100–$250 including parts and labor. Contact LG support or a qualified appliance technician.
Frequently Asked Questions
What does the humidity sensor do in an LG refrigerator?
The humidity sensor monitors moisture levels inside the fresh food compartment. It helps the fridge adjust airflow to keep the crisper drawers at the right humidity for vegetables and fruits. A faulty sensor can cause produce to dry out or get too wet.
Will my LG refrigerator stop cooling with the Er SH error?
No — the main cooling system is separate from the humidity sensor. Your food will stay cold. But the crisper drawers may not maintain optimal humidity until the sensor is fixed.
How much does an LG refrigerator humidity sensor cost?
The sensor part itself is typically $15–$30. With professional labor, total repair is $100–$250. It's one of the more affordable refrigerator sensor replacements.