Whirlpool Dishwasher Clean Light Blinking 7 Times:... | appliancefaults.com

Technical Background:

The dishwasher's Main Control Unit (MCU) monitors various sensors and components. When it detects an anomaly, it signals the user through error codes, in this case, 7 blinks of the clean light. The MCU logic analyzes voltage paths from sensors like the turbidity sensor and door switch, and current draw through the heating element circuit. The 7 blinks generally indicate a heating or sensor related error.

Symptoms:

The homeowner reports that the clean light on their Whirlpool dishwasher is blinking 7 times repeatedly. The dishwasher may not be starting or completing cycles.

Possible Causes:

Failed or faulty door switch
Issue with the heating element or circuit
Problem with the turbidity sensor
Control board malfunction
Wiring harness issue related to the door or heater

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Lock Out/Tag Out (LOTO) the breaker.
2

Open the dishwasher and inspect the door switch. Using a multimeter, check for continuity when the door is closed and no continuity when open. Replace if faulty.
3

Locate the heating element at the bottom of the dishwasher. Disconnect the wires and test for continuity using a multimeter. A normal reading is typically between 15-25 ohms. An open circuit indicates a failed heating element and requires replacement.
4

Locate the turbidity sensor, usually near the sump. Disconnect it and test the resistance with a multimeter. Compare your reading with the manufacturer's specifications. Replace if out of range.
5

Inspect the wiring harness, paying close attention to areas where the wires flex, such as near the door hinge. Look for any broken, frayed, or corroded wires. Repair or replace as needed.
6

Visually inspect the control board for any signs of burned components, corrosion, or water damage. If any damage is visible, the control board needs replacement.
7

As a last resort, if all other components test good, replace the control board. Control board replacement may require programming dependent on the model number.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) the breaker to prevent accidental energizing. Dishwashers contain high voltage components that can cause serious injury or death.

Prevention:

Periodically clean the dishwasher's filter and spray arms to prevent debris buildup that can affect sensor readings. Regularly inspect the door seals for leaks, which can damage the control board. Use a dishwasher cleaner monthly.

Expert Tip:

Many Whirlpool dishwashers have a diagnostic mode that can provide more specific error codes. To enter diagnostic mode, simultaneously press and hold the High Temp Scrub and Heated Dry buttons, then press start. Refer to the service manual for interpreting the error codes.

Frequently Asked Questions

•What is the resistance range I should expect from the turbidity sensor on my specific Whirlpool dishwasher model?

The resistance range varies by model. Refer to the service manual for your specific Whirlpool dishwasher model. You can usually find this information online by searching for the model number and 'service manual'.

•How do I replace the control board on my dishwasher, and does it require programming?

Replacing the control board involves disconnecting the power, removing the dishwasher's front panel, unplugging the old control board, and installing the new one. Certain Whirlpool models require programming of the new control board using a USB drive and firmware. Consult the service manual for your specific model.

•Where can I find the tech sheet or service manual for my specific Whirlpool dishwasher model?

The tech sheet is often located behind the kick panel at the bottom front of the dishwasher. For the service manual, search online using your dishwasher's model number (e.g., 'Whirlpool dishwasher model WDT710PAYM2 service manual'). Many appliance parts websites offer access to these manuals.

Whirlpool Dishwasher Clean Light Blinking 7 Times: Troubleshooting & Reset

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range I should expect from the turbidity sensor on my specific Whirlpool dishwasher model?

•How do I replace the control board on my dishwasher, and does it require programming?

•Where can I find the tech sheet or service manual for my specific Whirlpool dishwasher model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: