LG Ice Maker HS Error: Harvest sensor fault
LG ice maker error — here’s what you need to know. The HS error code on your LG ice maker indicates a harvest sensor fault. This is a Medium severity issue. What Does HS Mean on an LG Ice Maker? The HS code indicates a fault with the harvest sensor — the component that monitors […]
~40%
DIY Fixable
From 30
Typical Repair Cost
1–2.5 hours
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. Turn the ice maker off until the HS fault is resolved to prevent the ejector motor from stripping its gears against a persistent jam. The rest of the refrigerator operates normally
Can I reset the code?
Yes. After clearing any ice jam, pressing the test/reset button resets the HS fault. If the sensor or mold heater is defective the code will return once the next harvest cycle fails its completion check
When to stop immediately?
Stop if you notice: You hear the ejector motor grinding or clicking repeatedly — stop use immediately to avoid gear damage, HS code returns after every manually-cleared jam within the same day.
Symptoms You May Notice
Ice maker stops mid-cycle without depositing ice
The ice maker begins a harvest cycle but stops partway through, leaving cubes in the mold or partially ejected, because the harvest sensor signals an incomplete release
Grinding or straining noise during harvest
The ejector motor strains against cubes that have not fully released from the mold, producing a grinding or clicking sound before the control board halts the cycle
HS code on the appliance display
The HS fault code is displayed after the control board times out waiting for the harvest sensor to confirm a successful ejection
Inconsistent temperature performance
The ice maker runs too hot, too cold, or cycles erratically because the control board receives inaccurate temperature readings from the faulty sensor.
Possible Causes
Ice jammed in the ejector mechanism
A partially-formed or oversized cube is stuck on the ejector fingers or in the mold cavity, preventing the harvest arm from completing its travel
DIY PossibleFailed harvest sensor
The sensor that detects ejector arm position or mold temperature at harvest has failed electronically, causing the board to log an incomplete harvest even when ejection is successful
Requires ProfessionalWeak mold heater not releasing ice cleanly
The mold heater that briefly warms the ice tray to release cubes during harvest is underperforming, causing cubes to stick and triggering repeated HS faults
Requires ProfessionalSafe Checks You Can Do
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1
Clear any ice jammed in the mold or ejector
Turn off the ice maker and allow the mold to warm slightly for 15–20 minutes with the freezer door open. Manually remove any cubes stuck to the ejector fingers or mold using a plastic utensil — never use a sharp metal tool that could damage the mold coating
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2
Run the ice maker test cycle
After clearing the jam, press and hold the ice maker test button for 3 seconds to initiate a full test harvest cycle. Listen for the ejector to complete a full rotation without straining
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3
Check the harvest sensor wiring connector
With the ice maker off, locate the small sensor connector on the side or rear of the ice maker module. Disconnect and firmly reseat it, checking for moisture or corrosion on the contacts
When to Call a Professional
Contact a qualified technician if:
- Ejector completes full rotation freely but HS fault persists — harvest sensor requires replacement
- Mold heater tests open or does not warm during the harvest cycle
- Ejector motor gears are stripped — motor assembly replacement required
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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