Whirlpool Dishwasher: Clean Light Blinking, Error Code... | appliancefaults.com

Technical Background:

The dishwasher's main control unit (MCU) monitors the rinse aid sensor's voltage. The sensor provides feedback to the MCU about the rinse aid level and concentration. A voltage outside the expected range triggers the 10-2 error. Voltage is typically a 5V DC signal.

Symptoms:

The 'Clean' light is blinking on your Whirlpool dishwasher, and you're seeing an error code of 10-2. The dishwasher may not be dispensing rinse aid correctly, leaving dishes with spots or streaks.

Possible Causes:

Defective rinse aid sensor.
Wiring harness issue between the sensor and control board.
Loose connection at the rinse aid dispenser.
Faulty main control board (MCU).
Incorrect rinse aid concentration.

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Open the dishwasher door and locate the rinse aid dispenser inside the door.
3

Inspect the wiring harness connected to the rinse aid sensor for any signs of damage or loose connections. Use a 1/4-inch nut driver to remove any access panels, if needed.
4

Using a multimeter, check the sensor's resistance. Refer to the tech sheet for the correct resistance range (typically around 5-10k ohms). An open or shorted sensor indicates a fault.
5

If the sensor is faulty, replace it with a new rinse aid sensor.
6

Reconnect power to the dishwasher and run a test cycle to verify the fault is resolved. Monitor the rinse aid dispensing during the cycle.
7

If the problem persists, suspect a faulty control board. Replacing the control board may be necessary, but consult a qualified technician.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock out and tag out (LOTO) the breaker to prevent accidental energization. Dishwashers operate with 120V AC, which can cause serious injury or death.

Prevention:

Use the correct type and amount of rinse aid. Regularly clean the rinse aid dispenser to prevent clogs. Avoid using excessive amounts of detergent, as this can interfere with the sensor's readings.

Expert Tip:

Some Whirlpool dishwashers have a service mode that allows you to run diagnostic tests and calibrate the sensors. Press and hold the 'Start' and 'Cancel' buttons simultaneously for 5 seconds to enter service mode. Consult the service manual for specific procedures.

Frequently Asked Questions

•Where can I find the tech sheet for my Whirlpool dishwasher?

The tech sheet is usually located inside the dishwasher, often behind the kick plate or attached to the back panel. You may also be able to find it online by searching for your dishwasher's model number and 'tech sheet'.

•How do I test the wiring harness for continuity?

After disconnecting power, use a multimeter set to the continuity setting (ohms). Place one probe on one end of the wire and the other probe on the other end. A reading of zero ohms or a beep indicates continuity. An open circuit (OL reading) means there's a break in the wire.

•What type of rinse aid is recommended for Whirlpool dishwashers?

Whirlpool recommends using a standard liquid rinse aid designed for automatic dishwashers. Avoid using homemade solutions or excessive amounts, as this can damage the sensor or leave residue on the dishes.

Whirlpool Dishwasher: Clean Light Blinking, Error Code 10-2 Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where can I find the tech sheet for my Whirlpool dishwasher?

•How do I test the wiring harness for continuity?

•What type of rinse aid is recommended for Whirlpool dishwashers?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: