Whirlpool TotalCoverage Dishwasher: Clicking Noise from... | appliancefaults.com

Technical Background:

The MCU controls the diverter motor, sending a 120V AC signal to activate it. A sensor provides feedback to the MCU, confirming the diverter's position. The diverter motor rotates a valve, directing water flow to different spray arms. The clicking noise often indicates the motor is trying to move but is either stuck or failing internally.

Symptoms:

The Whirlpool TotalCoverage dishwasher makes a clicking noise during the wash cycle, specifically when the spray arms are supposed to be diverting water flow.

Possible Causes:

Diverter motor failure.
Obstruction in the spray arm or diverter valve.
Faulty diverter switch or sensor.
Wiring harness issue to the diverter motor.
MCU (Main Control Unit) malfunction.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Access the diverter motor, typically located beneath the lower spray arm. You'll likely need a 1/4-inch nut driver and a Phillips head screwdriver.
3

Visually inspect the diverter motor and surrounding area for obstructions or damage.
4

Disconnect the wiring harness to the diverter motor and check the voltage with a multimeter during a wash cycle. Expect to see approximately 120V AC when the diverter motor is supposed to be active.
5

Check the diverter motor windings for continuity using a multimeter. An open winding indicates a faulty motor. Replace the diverter motor.
6

Inspect the wiring harness and connections for corrosion or damage. Repair or replace as needed.
7

If voltage is present and the motor has continuity, but it still clicks, replace the diverter motor assembly.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock-out/Tag-out (LOTO) procedures should be followed. High voltage is present during operation.

Prevention:

Regularly clean the spray arms and inspect them for debris. Avoid overloading the dishwasher, which can prevent proper water circulation and strain the diverter motor.

Expert Tip:

Many Whirlpool dishwashers have a diagnostic mode. Simultaneously press and hold the 'High Temp Wash' and 'Heated Dry' buttons for 3 seconds to enter diagnostic mode. This can sometimes help pinpoint the fault or reset the system.

Frequently Asked Questions

•What is the part number for the diverter motor on my Whirlpool TotalCoverage dishwasher?

The part number for the diverter motor will vary slightly depending on the exact model number of your TotalCoverage dishwasher. Check the model number sticker inside the dishwasher door and use it to search for the correct part number on a parts website. A common part number is W10476220, but verify before ordering.

•How do I access the diverter motor on my Whirlpool TotalCoverage dishwasher?

First, remove the lower spray arm by unscrewing or unclipping it. Then, you'll typically need to remove the lower filter assembly. The diverter motor is usually located underneath this filter assembly. You may need to remove a few screws to access it.

•Could a clogged filter cause the diverter motor to make a clicking noise?

Yes, a severely clogged filter can restrict water flow, putting extra strain on the diverter motor as it tries to redirect water. This increased strain can cause the motor to fail prematurely and create a clicking noise. Cleaning the filter regularly is crucial.

Whirlpool TotalCoverage Dishwasher: Clicking Noise from Spray Arm Diverter Motor

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the part number for the diverter motor on my Whirlpool TotalCoverage dishwasher?

•How do I access the diverter motor on my Whirlpool TotalCoverage dishwasher?

•Could a clogged filter cause the diverter motor to make a clicking noise?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: