Whirlpool WRS588FIHZ Refrigerator: Ice Maker Not... | appliancefaults.com

Technical Background:

The main control unit (MCU) monitors the optic sensors to detect the ice level. When the ice bin is full, the sensors signal the MCU to stop ice production. During a harvest cycle, the ice maker module energizes a heater and rotates the ice ejector blades. Voltage is supplied from the main control board to the ice maker through a dedicated wiring harness. The optic sensor consists of an emitter and receiver that communicate with each other using an infrared beam.

Symptoms:

US homeowners observe that the ice maker is not producing ice, even though the freezer temperature is set appropriately. The optic light sensor is flashing, indicating a potential issue with the ice maker's harvest cycle.

Possible Causes:

Faulty ice maker module.
Defective optic sensor (emitter or receiver).
Wiring harness issue between the ice maker and the main control board.
Low freezer temperature impacting ice formation.
Water inlet valve malfunction.
Main control board failure.

Solution:

1

Disconnect power to the refrigerator at the breaker panel.
2

Locate the ice maker assembly in the freezer compartment.
3

Using a 1/4-inch nut driver, remove the ice maker cover.
4

Inspect the wiring harness connecting the ice maker to the refrigerator. Check for any signs of damage, loose connections, or corrosion.
5

Use a multimeter to test the optic sensor. The emitter should have around 3.3V DC and the receiver should change states when the beam is broken. If the optic sensor is not functioning correctly, replace it.
6

If the optic sensor is good, test the voltage at the ice maker module during a harvest cycle (forced harvest if possible). You should see approximately 120V AC. If not, there is a wiring or main control board issue.
7

Replace the ice maker module. If issues persist, replace the main control board.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before performing any repairs. Use proper Lock Out Tag Out (LOTO) procedures. High voltage is present when the refrigerator is powered on.

Prevention:

Regularly clean the ice maker and ice bin to prevent ice buildup and ensure proper operation of the optic sensors. Replace the water filter every 6 months to prevent mineral buildup in the water inlet valve.

Expert Tip:

To initiate a forced harvest cycle on this model, press and hold the ice maker test button for 3 seconds. This will help diagnose if the ice maker module is functioning correctly.

Frequently Asked Questions

•What is the correct voltage reading for the optic sensor emitter and receiver?

The emitter should have approximately 3.3V DC. The receiver's voltage will change depending on whether the light beam is blocked or not.

•How do I access the main control board on the Whirlpool WRS588FIHZ?

The main control board is typically located behind the refrigerator near the bottom. You will need to remove the access panel using a 5/16-inch socket or nut driver.

•What is the proper freezer temperature setting for optimal ice production?

The recommended freezer temperature is between 0 and 5 degrees Fahrenheit.

Whirlpool WRS588FIHZ Refrigerator: Ice Maker Not Harvesting - Optic Light Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct voltage reading for the optic sensor emitter and receiver?

•How do I access the main control board on the Whirlpool WRS588FIHZ?

•What is the proper freezer temperature setting for optimal ice production?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: