Whirlpool Refrigerator: Clicking Sound & Dual Inlet... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) sends a 120V AC signal to the dual inlet valve solenoid when water is needed for the icemaker or dispenser. The solenoid opens, allowing water to flow. If the solenoid is failing, it can cause a rapid on/off cycle, creating a clicking sound. The MCU relies on feedback from various sensors to initiate the water dispensing process.

Symptoms:

The homeowner reports a repetitive clicking sound coming from the back of the Whirlpool refrigerator, typically near the water inlet area. The icemaker or water dispenser may not be working correctly, or at all.

Possible Causes:

Faulty dual inlet valve solenoid
Low water pressure to the refrigerator
Defective water filter
Icemaker malfunction triggering solenoid activation
Wiring issue to the dual inlet valve
Main Control Unit (MCU) relay issue.

Solution:

1

Unplug the refrigerator or turn off the breaker at the breaker panel.
2

Locate the dual inlet valve, usually at the back, lower section of the refrigerator. It will have multiple water lines connected to it.
3

Using a 1/4-inch nut driver, remove the valve's mounting screws and disconnect the wire harness.
4

Use a multimeter to test the solenoid coil for continuity. A reading of infinity indicates a failed solenoid.
5

Check the water pressure at the inlet valve. It should be at least 20 PSI.
6

If the solenoid is faulty, replace the dual inlet valve with a new, OEM part.
7

Reconnect the water lines and wiring harness, secure the valve, and restore power. Monitor for proper operation.

Safety Warning:

Disconnect power to the refrigerator before performing any repairs. Use proper Lock Out/Tag Out (LOTO) procedures to prevent accidental energization. High voltage is present; exercise caution when working with electrical components.

Prevention:

Replace the water filter every 6 months, or as recommended by the manufacturer. Ensure adequate water pressure to the refrigerator. Periodically inspect the water lines for kinks or leaks.

Expert Tip:

Some Whirlpool refrigerators have a service mode. To access it, simultaneously press and hold the Ice and Water dispenser buttons for 3 seconds. This can allow you to manually activate the inlet valve for testing purposes.

Frequently Asked Questions

•How do I test the water pressure coming into my refrigerator?

You can purchase a water pressure gauge at most hardware stores. Attach it to the water line fitting at the back of the refrigerator after disconnecting the water supply line. Open the valve briefly to get a pressure reading. It should be at least 20 PSI.

•What is the proper resistance reading I should see on the dual inlet valve solenoid?

Typically, a good dual inlet valve solenoid should have a resistance reading between 200-500 ohms. An open circuit (infinity) indicates a faulty solenoid.

•Where can I find a replacement dual inlet valve for my Whirlpool refrigerator?

You can find replacement dual inlet valves at most appliance parts retailers, both online and in brick-and-mortar stores. Make sure to use your refrigerator's model number to ensure you get the correct part.

Whirlpool Refrigerator: Clicking Sound & Dual Inlet Valve Solenoid Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the water pressure coming into my refrigerator?

•What is the proper resistance reading I should see on the dual inlet valve solenoid?

•Where can I find a replacement dual inlet valve for my Whirlpool refrigerator?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: