LG LRFVS3006S Refrigerator: Ice Maker Not Harvesting... | appliancefaults.com

Technical Background:

The ice maker operates based on signals from the main control unit (MCU). The MCU controls the water inlet valve, the ice maker heater (for harvest), and monitors the ice maker thermostat. Voltage paths include 120V AC to the water inlet valve and lower voltage DC signals for sensing and control.

Symptoms:

The ice maker in your LG LRFVS3006S refrigerator is full of water, but it is not releasing (harvesting) the ice cubes. You may see ice forming, but it remains stuck in the mold.

Possible Causes:

Faulty ice maker module (mechanical or electronic failure).
Defective ice maker water inlet valve (not opening or closing properly).
Ice maker thermostat malfunction (not sensing the correct temperature).
Frozen or blocked fill tube (preventing water from entering the ice maker).
Low water pressure (insufficient water supply).
Main control board (MCU) issue (not sending the correct signals).

Solution:

1

Disconnect power to the refrigerator at the breaker panel. Verify 0V AC at the refrigerator outlet using a multimeter.
2

Remove the ice maker cover (usually held by screws or clips). Use a 1/4-inch nut driver to remove screws. Carefully disconnect any wiring harnesses.
3

Inspect the fill tube for ice blockage. If blocked, use a hair dryer on a low setting to gently melt the ice. Alternatively, use a turkey baster with warm water.
4

Check the ice maker water inlet valve for proper operation. Disconnect the water line at the valve. Using a multimeter, test for 120V AC to the valve terminals when the ice maker is in the fill cycle (can be manually forced into this cycle on some models). If no voltage is present, suspect the MCU. If voltage is present but no water flows, the valve is faulty and needs replacement.
5

Test the ice maker module using a multimeter. Check for continuity across the thermostat when cold. Check the heater element resistance (typically around 50-100 ohms). Replace the ice maker module if it fails any of these tests. You may also be able to manually cycle the ice maker to test the motor.
6

If the above steps do not resolve the issue, the main control board (MCU) may be faulty. Replacement requires specialized knowledge and potentially programming. Consult a qualified appliance technician.
7

Restore power to the refrigerator at the breaker panel. Observe the ice maker for proper operation over the next 24 hours.

Safety Warning:

Disconnect power to the refrigerator before performing any repairs. High voltage is present in the refrigerator. Follow Lock-Out/Tag-Out (LOTO) procedures to prevent accidental energization.

Prevention:

Replace the refrigerator's water filter every 6 months. Periodically check the fill tube for ice buildup and clear as needed. Ensure adequate water pressure to the refrigerator (at least 20 PSI).

Expert Tip:

Some LG refrigerators have a service mode that allows you to manually initiate an ice harvest cycle. Check the service manual for the specific sequence for the LRFVS3006S model.

Frequently Asked Questions

•How do I manually force the ice maker into a harvest cycle?

Refer to the service manual for the specific button sequence for the LRFVS3006S. Typically, it involves pressing a combination of buttons on the control panel. Be very careful as some service modes are for technicians only.

•What should the water pressure be for the refrigerator?

The water pressure should be between 20 and 120 PSI. Lower pressure can result in slow ice production or no ice at all.

•How do I test the ice maker thermostat?

Disconnect power to the refrigerator. Remove the ice maker. Locate the thermostat (usually attached to the ice maker mold). Use a multimeter to check for continuity when the thermostat is cold (below freezing). If there is no continuity, the thermostat is faulty.

LG LRFVS3006S Refrigerator: Ice Maker Not Harvesting Cubes - Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I manually force the ice maker into a harvest cycle?

•What should the water pressure be for the refrigerator?

•How do I test the ice maker thermostat?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: