Hotpoint Dishwasher Error Code 10-1: Spray Arm Diverter... | appliancefaults.com

Technical Background:

The Hotpoint dishwasher's main control unit (MCU) monitors the position and function of the spray arm diverter motor. The diverter motor switches the water flow between the upper and lower spray arms. The MCU sends a 120V AC signal to the diverter motor and expects to see feedback indicating the motor has moved to the correct position. If the MCU does not receive the expected feedback, it will trigger error code 10-1.

Symptoms:

The homeowner might observe that the dishwasher is not cleaning dishes properly, especially on one rack more than the other. Water might not be spraying from all spray arms. The dishwasher cycle may also take longer than usual, or it may stop mid-cycle.

Possible Causes:

Failed diverter motor
Blocked spray arm or diverter valve
Faulty wiring harness or connection to the diverter motor
Defective main control board (MCU)
Low water pressure affecting diverter operation
Stuck or jammed diverter valve

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Access the diverter motor assembly located at the bottom of the dishwasher. Typically requires removing the lower spray arm and access panel using a 1/4-inch nut driver.
3

Inspect the wiring harness and connector to the diverter motor for any signs of damage or corrosion. Check for 120V AC to the motor during the diverter cycle with a multimeter.
4

Manually rotate the diverter valve to check for any obstructions or binding. Clear any debris.
5

If the wiring and valve are clear, replace the diverter motor assembly. Part number will vary based on model.
6

If the problem persists after replacing the diverter motor, the main control board (MCU) may be faulty. Replacement of the MCU may be necessary.
7

Reassemble the dishwasher and restore power at the breaker panel. Run a test cycle to verify the repair.

Safety Warning:

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 when the dishwasher is powered on.

Prevention:

Regularly clean the spray arms to prevent clogs. Check for and remove any debris from the bottom of the dishwasher. Ensure adequate water pressure to the dishwasher.

Expert Tip:

Some Hotpoint dishwashers have a service mode that allows you to manually activate the diverter motor for testing purposes. Refer to the technical service manual for the specific model to access the service mode sequence.

Frequently Asked Questions

•How do I access the diagnostic mode on my Hotpoint dishwasher?

The diagnostic mode access varies by model. Consult your technical service manual, or search online using your specific model number and 'diagnostic mode'.

•What is the voltage range I should expect to see at the diverter motor connector?

You should expect to see 120V AC at the diverter motor connector during the diverter cycle. Use a multimeter to verify the voltage.

•Where can I find the technical service manual for my specific Hotpoint dishwasher model?

You can often find the technical service manual online by searching with your model number followed by 'service manual' or 'technical sheet'. AppliancePartsPros and similar sites often have these documents available.

Hotpoint Dishwasher Error Code 10-1: Spray Arm Diverter Fault Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the diagnostic mode on my Hotpoint dishwasher?

•What is the voltage range I should expect to see at the diverter motor connector?

•Where can I find the technical service manual for my specific Hotpoint dishwasher model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: