Admiral Dishwasher Growling Noise During Drain Cycle:... | appliancefaults.com

Technical Background:

The dishwasher's Main Control Unit (MCU) energizes the drain pump motor at the appropriate time in the wash cycle. The MCU sends 120V AC to the pump motor. If the pump is mechanically stressed or electrically failing, it can produce unusual noises.

Symptoms:

The homeowner reports a loud growling noise emanating from the Admiral dishwasher specifically during the drain cycle. The dishwasher may or may not be draining properly.

Possible Causes:

Foreign object obstructing the drain pump impeller.
Worn or damaged drain pump motor bearings.
Defective drain pump motor winding.
Clogged drain hose or air gap.

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Always use proper Lock-Out Tag-Out (LOTO) procedures.
2

Access the drain pump. This usually involves removing the lower access panel and potentially some interior components using a 1/4-inch nut driver.
3

Inspect the drain pump impeller for obstructions (food particles, glass shards, etc.). Remove any debris using needle-nose pliers.
4

Check the drain hose for kinks or clogs. Disconnect the hose and flush it with water, checking for free flow.
5

If no obstructions are found, test the drain pump motor winding with a multimeter. Resistance should match the manufacturer's specifications (consult the service manual if available). Typical resistance is between 20 and 50 ohms.
6

If the motor winding is open or shorted, replace the drain pump. Use a 5/16-inch socket to remove mounting screws.
7

Reassemble the dishwasher and reconnect the power at the breaker panel.

Safety Warning:

Disconnect power at the breaker before working on the dishwasher. High voltage is present when the appliance is powered. Use caution when handling electrical components and follow LOTO procedures.

Prevention:

Regularly clean the dishwasher filter to prevent food particles from entering the drain pump. Run a dishwasher cleaner through the cycle monthly.

Expert Tip:

Some Admiral dishwashers have a service mode. Consult the service manual for the correct sequence to enter the service mode and run a drain cycle for testing purposes.

Frequently Asked Questions

•How do I access the drain pump on my Admiral dishwasher model?

Typically, you'll need to remove the lower front access panel. This often involves removing screws along the bottom edge. Consult your owner's manual for specific instructions.

•What should the resistance reading be on the drain pump motor windings?

Unfortunately, the exact resistance value varies by model. Refer to the service manual or look for a label on the pump itself for the specified resistance range. A typical range is between 20 and 50 ohms.

•Where is the air gap located, and how do I clean it?

The air gap is usually located on the countertop near the sink. It's a small chrome or plastic cylinder. To clean it, disconnect the hoses connected to it and flush it with water to remove any clogs.

Admiral Dishwasher Growling Noise During Drain Cycle: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drain pump on my Admiral dishwasher model?

•What should the resistance reading be on the drain pump motor windings?

•Where is the air gap located, and how do I clean it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: