Maytag Refrigerator Ice Maker Water Valve Humming:... | appliancefaults.com

Technical Background:

The refrigerator's Main Control Unit (MCU) sends a 120V AC signal to the ice maker water valve when the ice maker thermistor reaches a specific temperature, indicating it's time to refill. This voltage energizes the solenoid in the water valve, opening it and allowing water to flow to the ice maker. If the valve hums but doesn't open, it's either not receiving enough voltage, is mechanically blocked, or the solenoid is failing.

Symptoms:

The ice maker is not producing ice. The water valve at the back of the refrigerator is making a humming noise. No water is dispensed when the ice maker attempts to fill.

Possible Causes:

Clogged water filter
Frozen water supply line
Defective water inlet valve
Low water pressure to the refrigerator
Faulty ice maker module
Sediment buildup in the valve

Solution:

1

Disconnect the refrigerator from power at the breaker panel (LOTO). Ensure no voltage is present at the outlet using a multimeter.
2

Locate the water filter (usually in the upper right corner or at the base) and replace it. Note the date of replacement.
3

Inspect the water supply line for kinks or freezing. If frozen, use a hair dryer on low heat to thaw it. Be careful not to overheat the plastic line.
4

Check the water pressure to the fridge. It should be at least 20 PSI. If low, investigate the household water supply.
5

Access the water inlet valve (usually at the back of the fridge). Using a multimeter, check for 120V AC at the valve when the ice maker calls for water.
6

If voltage is present but the valve is humming and not dispensing water, the valve is likely defective. Replace the valve using a 1/4-inch nut driver.
7

If no voltage is present, the ice maker module or wiring may be faulty. Consult a wiring diagram and test for continuity using a multimeter. Check wiring connections with a 5/16-inch socket.

Safety Warning:

Disconnect power to the refrigerator before performing any repairs. Lock out/tag out (LOTO) the breaker to prevent accidental energization. High voltage is present in the control circuits. Wear appropriate safety gear.

Prevention:

Replace the refrigerator's water filter every 6 months, or as recommended by the manufacturer. Periodically inspect the water supply line for kinks or leaks.

Expert Tip:

Some Maytag refrigerators have a service mode accessible through the control panel. Consult the service manual for your specific model to initiate a diagnostic test of the ice maker water valve. This can help isolate the problem.

Frequently Asked Questions

•How do I manually test the ice maker water valve?

Carefully disconnect the valve and apply 120V AC directly to the terminals. If it doesn't open, it's likely defective. Be extremely careful when working with live voltage.

•Where can I find the water valve on my Maytag refrigerator?

The water valve is typically located at the back of the refrigerator, near the bottom. You may need to remove the access panel to reach it.

•What is the proper water pressure for my Maytag refrigerator?

The minimum water pressure required is typically 20 PSI. Check the manufacturer's specifications for your specific model. Too low water pressure will restrict the flow.

Maytag Refrigerator Ice Maker Water Valve Humming: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I manually test the ice maker water valve?

•Where can I find the water valve on my Maytag refrigerator?

•What is the proper water pressure for my Maytag refrigerator?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: