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Quick answer
First, check the water supply valve and ensure it's fully open. Reset the ice maker by toggling the ice maker switch or unplugging the fridge for 1 minute. If it still doesn’t work, inspect the water inlet valve for clogs or replace it if needed.
Confirm the symptom
- Ice maker is in the bottom of the fridge
- No ice production despite proper settings
- Water dispenser works but no ice
- Ice maker arm is not blocked
- Fridge temperature is normal
Tools and prep
- Screwdriver (Phillips and flathead)
- Multimeter (optional, for testing)
- Clean cloth or paper towels
- Replacement water filter (if needed)
- Replacement water inlet valve (if needed)
- Turn off power to fridge at circuit breaker
- Shut off water supply to ice maker
Step-by-step troubleshooting
- Check Water Supply ValveDo: Locate the shut-off valve under the sink or near the fridge and ensure it's fully open.Observe: Water flows freely when the valve is open.Means: A closed or partially closed valve blocks water to the ice maker.Next: If the valve is open and water isn't flowing, move to the next step.
- Inspect Water Inlet ValveDo: Check the water inlet valve for clogs or debris. Clean or replace if necessary.Observe: Water flows through the valve when tested.Means: A clogged or faulty valve prevents water from reaching the ice maker.Next: If the valve is clogged, clean it. If it's faulty, replace it.
- Test Water FilterDo: Remove the water filter and run water through the dispenser to check for blockage.Observe: Water flows freely without the filter.Means: A clogged filter can restrict water flow to the ice maker.Next: Replace the water filter if it's dirty or old.
- Reset the Ice MakerDo: Toggle the ice maker switch to off and then back to on. Alternatively, unplug the fridge for 1 minute.Observe: The ice maker restarts and begins producing ice.Means: A reset can resolve minor electronic or mechanical issues.Next: If the ice maker still doesn’t work after resetting, proceed to the next step.
- Check Ice Maker ArmDo: Ensure the ice maker arm is in the down position and not obstructed.Observe: The arm moves freely and is in the correct position.Means: An obstructed or stuck arm can prevent the ice maker from cycling.Next: If the arm is stuck, gently move it down and test the ice maker again.
- Inspect Ice Maker MotorDo: Listen for a clicking sound when the ice maker is supposed to cycle.Observe: You hear a clicking sound but no movement.Means: A faulty motor or gear assembly may need replacement.Next: If the motor isn’t working, consider replacing the ice maker assembly.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Water supply valve closed The valve restricts water flow to the ice maker. | Common | Easy | None |
| Clogged water inlet valve Debris or mineral buildup blocks water flow. | Common | Easy–Medium | Water inlet valve |
| Clogged water filter A dirty filter restricts water flow to the ice maker. | Common | Easy | Water filter |
| Faulty ice maker motor The motor fails to cycle the ice maker. | Sometimes | Medium | Ice maker assembly |
| Blocked ice maker arm The arm prevents the ice maker from cycling. | Sometimes | Easy | None |
| Faulty water inlet valve The valve doesn't open to allow water into the ice maker. | Sometimes | Medium | Water inlet valve |
| Low water pressure Insufficient pressure prevents proper water flow. | Rare | Easy | None |
| Fridge temperature too warm The fridge isn’t cold enough to make ice. | Rare | Easy | None |
Parts matching
Common parts needed for an LG bottom ice maker issue:
- Water inlet valve – if clogged or faulty
- Water filter – if old or dirty
- Ice maker assembly – if the motor or gears are faulty
- Ice maker switch – if unresponsive
Match parts to your LG model number for compatibility.
When to call a professional
- If the ice maker still doesn’t work after replacing the water inlet valve and filter
- If you hear no sounds from the ice maker motor when it should be cycling
- If you're unsure about electrical testing or part replacement
- If the fridge is under warranty and you don’t want to risk voiding it
FAQ
How do I know if my water filter is clogged?
If water flow from the dispenser is slow or weak, the filter is likely clogged. Replace it with a new one.
Can I test the water inlet valve without replacing it?
Yes, you can test it with a multimeter. If it shows no continuity, the valve is faulty and needs replacement.
Why does my ice maker make noise but not produce ice?
A noisy motor with no ice production may indicate a jammed gear or motor failure. Check for obstructions or consider replacing the ice maker assembly.
How often should I replace my water filter?
Replace it every 6 months or as recommended by LG, especially if you notice reduced water flow or ice production.