Whirlpool Ice Maker Not Harvesting Cubes: Troubleshooting... | appliancefaults.com

Technical Background:

The ice maker operates based on a programmed sequence controlled by the MCU on the control module. The MCU monitors the ice level sensor and initiates the harvest cycle when the ice mold is full. The harvest cycle involves energizing the ice mold heater to release the cubes. Voltage paths from the main control board supply power to the ice maker components.

Symptoms:

The homeowner observes that the Whirlpool refrigerator ice maker is not producing ice cubes, despite the freezer being cold. The refrigerator's display shows an 'Empty Ice' message even when the ice bin is empty.

Possible Causes:

Clogged or frozen water supply line
Defective ice mold heater
Faulty ice level sensor
Damaged ice maker control module
Low water pressure
Ice buildup preventing harvest

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Check the water supply line for kinks or ice blockage. Thaw with a hairdryer if frozen. Ensure water pressure is at least 20 PSI.
3

Remove the ice maker cover (typically with a 1/4-inch nut driver). Inspect the ice mold heater for continuity using a multimeter. Should read approximately 20-40 Ohms.
4

Test the ice level sensor. When the ice bin is empty, the sensor should indicate an open circuit. When full, it should indicate a closed circuit.
5

Check the voltage to the ice maker module during the harvest cycle. Use a multimeter to measure 120V AC at the appropriate terminals.
6

If the heater, sensor, and voltage are all within spec, replace the ice maker control module.
7

Reassemble the ice maker and restore power at the breaker panel.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. The ice maker operates on 120V AC, posing a shock hazard.

Prevention:

Replace the refrigerator's water filter every 6 months to prevent clogs. Periodically clean the ice bin to remove any ice buildup. Check water pressure annually.

Expert Tip:

Some Whirlpool refrigerators have a service mode. To initiate the ice maker harvest cycle manually, simultaneously press and hold the 'Freezer Temperature Down' and 'Refrigerator Temperature Up' buttons for 3-5 seconds. This can help diagnose mechanical issues.

Frequently Asked Questions

•What is the resistance range I should expect from a working ice maker heater?

A working ice maker heater should typically have a resistance between 20 and 40 Ohms. An open circuit indicates a failed heater.

•How do I determine if the ice level sensor is faulty?

With the ice bin removed or empty, the ice level sensor should show an open circuit. With ice present, it should be a closed circuit. Use a multimeter to test.

•What voltage should I expect at the ice maker during the harvest cycle?

You should measure approximately 120V AC at the ice maker module during the harvest cycle. Refer to the wiring diagram for specific terminal locations.

Whirlpool Ice Maker Not Harvesting Cubes: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range I should expect from a working ice maker heater?

•How do I determine if the ice level sensor is faulty?

•What voltage should I expect at the ice maker during the harvest cycle?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: