Hotpoint Washer Lid Lock Light Flashing: Troubleshooting... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) monitors the lid switch and lid lock. When a spin cycle is initiated, the MCU sends a signal to engage the lid lock. The MCU verifies the lid lock is engaged via a feedback signal. If the MCU doesn't receive the correct feedback signal or if the lid switch is open during a spin cycle, it will prevent the spin cycle and display a fault code (flashing lid lock light).

Symptoms:

The homeowner reports that the lid lock light is flashing, and the washing machine will not spin. Clothes are left soaking wet at the end of the cycle.

Possible Causes:

Lid switch malfunction.
Faulty lid lock assembly.
Obstruction preventing lid lock engagement.
Damaged wiring harness or connections.
Main Control Board (MCU) failure.

Solution:

1

Unplug the washer from the 120V AC power outlet.
2

Open the washer lid and visually inspect the lid switch and lid lock assembly for damage or obstructions.
3

Using a multimeter, test the lid switch for continuity when the lid is closed. Should read closed.
4

Check the wiring harness and connections leading to the lid lock and main control board for loose connections or damage.
5

Access the main control board (MCU). Refer to the service manual for location. Inspect for burnt components.
6

If no physical damage to the MCU is present, check for 12V DC at the lid lock connector from the MCU when the spin cycle is initiated.
7

Replace the lid lock assembly, lid switch or MCU as needed based on testing.

Safety Warning:

Disconnect power to the appliance before performing any repairs. Capacitors in the control board can hold a charge, even after the unit is unplugged. Wear appropriate safety gear. Lock-Out/Tag-Out (LOTO) procedures must be followed.

Prevention:

Avoid overloading the washer. Regularly clean the lint filter to prevent obstructions. Do not slam the lid closed.

Expert Tip:

Many Hotpoint washers have a diagnostic mode. Entering this mode can help pinpoint the exact fault code. Consult the service manual for your specific model. A common service mode entry is pressing and holding the Start button for 3 seconds while rapidly turning the cycle selector knob three clicks clockwise, then two clicks counter-clockwise. The fault code will be displayed as a series of flashing lights.

Frequently Asked Questions

•How do I access the lid switch on my Hotpoint washer?

Typically, the lid switch is located under the top panel of the washer. You'll need to remove screws at the back of the top panel and slide it back to access the switch.

•What voltage should I expect to see at the lid lock connector?

You should expect to see 12V DC at the lid lock connector from the MCU when the spin cycle is initiated. Refer to the wiring diagram in the service manual for specific pin assignments.

•How do I know if the MCU is the problem?

The MCU is usually the last thing to replace after you have ruled out all other possibilities such as the lid switch, lid lock, wiring, and obstructions. If the MCU is not sending voltage to the lid lock, and all wiring is good, then MCU replacement is necessary.

Hotpoint Washer Lid Lock Light Flashing: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the lid switch on my Hotpoint washer?

•What voltage should I expect to see at the lid lock connector?

•How do I know if the MCU is the problem?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: