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LG Refrigerator Ice Maker Not Working: Reset, Test Mode & Temperature Checks

Symptoms:

LG Refrigerator Ice Maker Not Working: Reset, Test Mode & Temperature Checks

LG’s own support material starts with the power switch and freezer temperature, then the 30-second reset and test mode button. Here’s the order to check.

Ice cubes and water bottle top view, illustrating an LG refrigerator ice maker diagnosis
Risk
Low
Difficulty
Beginner

Before you start

Unplug the appliance, shut off the water supply if relevant, and stop immediately if you smell burning. If in doubt, call a qualified professional.

On this page

On most LG refrigerators, an ice maker that stops working traces back to its own power switch, freezer temperature, or a recent installation still cooling down, more often than a failed part. LG’s own support material walks through these before recommending a reset.

This page assumes you’ve already read our full Ice Maker Not Working guide, which covers every general cause in diagnostic order. Everything below is specific to LG’s reset procedure and temperature requirements. It’s part of our full refrigerator troubleshooting hub.

LG Reset Procedure

LG’s documented reset is to power the refrigerator off for about 30 seconds, either by tripping the breaker or unplugging it, then powering it back on. Some ice maker models also have a dedicated test-mode button, usually a small recessed hole; use a thin piece of metal like a straightened paper clip to press and hold it for about 3 seconds until the ice maker’s arms start to turn, which confirms the mechanism itself is functional.

Where to Check First on LG Models

Check for a physical ON/OFF switch on the left side of the ice maker, or an Ice On/Ice Off option on the control panel if your model doesn’t have a physical switch. LG specifies a freezer temperature below 19°F for ice production to work at all, with a minimum recommended temperature closer to -4°F for consistent output. On a newly installed refrigerator, LG notes it can take up to 24 hours for each compartment to reach its target temperature and for the ice maker to start producing.

Known LG Pain Points

LG’s own guidance is direct about when to stop troubleshooting: if the unit still isn’t producing or harvesting ice after 4 to 6 hours of confirmed correct temperature and power, LG considers that a sign the unit needs repair service rather than further home troubleshooting.

Frequently Asked Questions

How do I know if my LG ice maker has a test-mode button?

Look for a small recessed hole near the front or side of the ice maker unit. Not every LG model has one; check your model's manual if you don't see it.

What's the actual temperature my LG freezer needs for ice production?

Below 19°F for ice production to occur at all, with LG recommending closer to -4°F for the ice maker to keep up with normal demand.

I just installed a new LG refrigerator and there's no ice yet, is that normal?

Yes. LG states it can take up to 24 hours for each compartment to reach its target temperature, and the ice maker won't start producing until the freezer is cold enough.

LG says to wait 4 to 6 hours before assuming it needs repair, why so long?

That window accounts for the freezer reaching temperature and the ice maker completing at least one full cycle. Concluding a repair is needed sooner risks missing a fix that just needed more time.

The information provided here is a diagnostic aid and does not replace the intervention of a qualified professional.

Tools needed

Probable causes

First checks

Step-by-step diagnosis

  1. Power the refrigerator off for about 30 seconds (breaker or unplug), then power it back on.
  2. If your model has a test-mode button (a small recessed hole near the ice maker), press and hold it with a straightened paper clip for about 3 seconds until the arms turn.
  3. Confirm the freezer has had enough time (up to 24 hours on a new install) to reach the temperature ice production needs.

Mistakes to avoid

When to stop

Parts potentially involved

When to call a professional

If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.

Related guides

Error codes for this appliance

The information provided here is a diagnostic aid and does not replace the intervention of a qualified professional.

Sam Radford — DiagnosFix

Sam Radford — DiagnosFix

Technical reviewer

Last verified: 2026-07-19