Hotpoint Washer Sensing Light Flashing: Troubleshooting... | appliancefaults.com

Technical Background:

The flashing sensing light indicates an error code related to the water fill process. The Main Control Unit (MCU) monitors signals from the water level sensor (pressure switch), water inlet valve, and lid switch. If these signals are not within the expected parameters, the MCU will display this error and prevent the machine from operating. Voltage paths for the inlet valve and lid switch are crucial for proper operation.

Symptoms:

The Hotpoint washer's sensing light is flashing, but the washer is not filling with water. The machine may hum or do nothing at all when the cycle is started.

Possible Causes:

Water inlet valve malfunction
Pressure switch failure
Clogged or kinked inlet hose
Faulty lid switch
Issues with the main control board (MCU)
Air lock in the drain line

Solution:

1

Unplug the washer from the 120V AC outlet and turn off the water supply valves.
2

Check the water inlet hoses for kinks or clogs. Disconnect them from the washer and clean the screens.
3

Test the water inlet valve for continuity using a multimeter. A reading of approximately 1.3k ohms is typical. Replace if open or shorted.
4

Inspect the pressure switch hose for clogs or leaks. Remove the hose and blow through it to ensure it's clear. Check pressure switch wiring and test with a multimeter for proper operation, typically a closed circuit when empty.
5

Verify the lid switch is functioning correctly. Use a multimeter to test for continuity when the lid is closed.
6

Inspect the main control board for any burned or damaged components. If found, replace the control board. Ensure proper voltage (120V AC) is reaching the board.
7

Check the drain line for any air locks or obstructions. Clear any blockages to ensure proper draining.

Safety Warning:

Always disconnect the appliance from the power source before attempting any repairs. High voltage is present inside the appliance. Use proper Lock-Out/Tag-Out (LOTO) procedures to prevent accidental electrocution. Ensure proper grounding.

Prevention:

Periodically clean the inlet hose screens and inspect the pressure switch hose for any signs of wear or damage. Avoid overloading the washer to prevent strain on components.

Expert Tip:

Some Hotpoint washers have a diagnostic mode. Simultaneously press and hold the Start/Pause and Temperature buttons for 3 seconds to enter diagnostic mode. This may provide specific error codes to pinpoint the problem.

Frequently Asked Questions

•What is the resistance range I should expect on a functional water inlet valve?

A functional water inlet valve typically exhibits a resistance between 500 ohms and 1.5k ohms. Check the service manual for the specific model.

•How do I access the main control board on my Hotpoint washer model?

The main control board is typically located behind the control panel. You may need to remove screws on the back or top of the washer to access the control panel. Disconnect power first.

•What is the proper voltage reading for the lid switch when the lid is closed?

The lid switch is a simple on/off switch. When the lid is closed, you should read continuity (near 0 ohms) across the switch terminals. When the lid is open, the circuit should be open (infinite resistance).

Hotpoint Washer Sensing Light Flashing: Troubleshooting No Water Fill

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range I should expect on a functional water inlet valve?

•How do I access the main control board on my Hotpoint washer model?

•What is the proper voltage reading for the lid switch when the lid is closed?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: