Hotpoint Dishwasher: Clean Light Blinking 7 Times -... | appliancefaults.com

Technical Background:

The dishwasher's Main Control Unit (MCU) monitors various sensors and components. The error code indicates a specific fault detected by the MCU, often related to water level, pump operation, or valve position. The blinking clean light is a visual error code, translated by counting the blinks. Voltage signals are sent from sensors to the MCU, which interprets these signals to determine operation.

Symptoms:

The Hotpoint dishwasher displays a blinking clean light, repeating 7 times, and the dishwasher may not start or complete its cycle. The homeowner reports the unit is not washing properly or is making unusual noises.

Possible Causes:

Overfill float switch stuck or faulty
Circulation pump motor failure or obstruction
Faulty diverter valve
Pressure sensor malfunction
Issues with the control board (MCU)
Wiring harness problems affecting sensor signals

Solution:

1

Disconnect power to the dishwasher at the breaker panel.
2

Inspect the overfill float switch for debris or being stuck. Clean or replace if necessary.
3

Check the circulation pump for obstructions. Remove the pump and manually rotate the impeller.
4

Test the diverter valve with a multimeter for proper operation. Resistance should be within the manufacturer's specifications. Typically around 500-1500 ohms.
5

Verify the pressure sensor voltage using a multimeter. Compare to the values in the service manual. Expected range may be around 1-5V DC.
6

Visually inspect the wiring harness for any damage or loose connections.
7

If all other components test good, replace the control board (MCU).

Safety Warning:

Disconnect power before performing any repairs. High voltage is present when the unit is powered. Follow Lock Out/Tag Out (LOTO) procedures to prevent accidental energization.

Prevention:

Regularly clean the dishwasher filter and inspect the spray arms for clogs. Run a dishwasher cleaner every month to prevent buildup. Avoid overloading the dishwasher to ensure proper water circulation.

Expert Tip:

Some Hotpoint dishwashers have a diagnostic mode. Press and hold the 'Start' button for 5 seconds, then press 'High Temp' followed by 'Air Dry'. This may display more detailed error codes.

Frequently Asked Questions

•Where is the overfill float switch located?

The overfill float switch is typically located at the bottom of the dishwasher tub, often near the front. It's a small, usually plastic component that rises with the water level.

•What resistance range should I expect when testing the diverter valve?

Refer to the Hotpoint service manual for your specific model. However, a typical diverter valve resistance range is between 500 and 1500 ohms. An open circuit (infinite resistance) or a short circuit (zero resistance) indicates a faulty valve.

•How do I access the control board in this dishwasher?

The control board is usually located behind the dishwasher's control panel. You'll need to remove the outer door panel and the control panel fascia to access it. Be sure to disconnect power before disassembling.

Hotpoint Dishwasher: Clean Light Blinking 7 Times - Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the overfill float switch located?

•What resistance range should I expect when testing the diverter valve?

•How do I access the control board in this dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: