Hotpoint Washer Filling with Water When Off:... | appliancefaults.com

Technical Background:

The washing machine's main control unit (MCU) controls the water inlet valve based on signals from the pressure switch and user settings. The MCU sends 120V AC to the water inlet valve to open it. A faulty MCU, pressure switch, or wiring problem can cause the valve to remain open.

Symptoms:

The Hotpoint washing machine continues to fill with water even when it is turned off or not in use. The water level rises in the tub until it overflows, or the pump engages to drain the excess water.

Possible Causes:

Faulty water inlet valve
Defective pressure switch
Malfunctioning main control unit (MCU)
Siphon effect from drain hose
Wiring harness issue

Solution:

1

Disconnect power to the washing machine at the breaker panel.
2

Inspect the water inlet valve for damage or debris. Remove the water supply hoses using pliers. Check the valve screen for sediment. Clean or replace as needed.
3

Test the water inlet valve with a multimeter. Set the multimeter to ohms. The coil should read between 500 and 1500 ohms. If the reading is outside this range or shows infinite resistance (open circuit), replace the valve.
4

Check the pressure switch hose for kinks or clogs. Disconnect the hose from the pressure switch and the tub. Blow through the hose to ensure it's clear. Replace the hose if necessary.
5

Inspect the drain hose system. Ensure the drain hose is properly secured and has an air gap to prevent siphoning. The top of the drain hose should be higher than the water level in the tub.
6

Check wiring harness connections to the water inlet valve, pressure switch and MCU for corrosion or loose connections. Use a wire brush or contact cleaner to clean corroded terminals.
7

If the issue persists, the MCU may be faulty and require replacement. This is a more complex repair and may require a qualified technician.

Safety Warning:

Disconnect power to the washing machine at the breaker panel before performing any repairs. Use proper Lock Out Tag Out (LOTO) procedures. High voltage is present in the control panel.

Prevention:

Periodically inspect the water inlet valve screens for debris and clean them as needed. Ensure the drain hose is properly installed and has an air gap. Avoid overloading the washing machine to prevent stress on the pressure switch.

Expert Tip:

Some Hotpoint washers have a diagnostic mode that can help pinpoint the problem. Consult the service manual for the specific model to access the diagnostic mode sequence. Usually involves pressing a combination of buttons on the control panel.

Frequently Asked Questions

•How do I test the pressure switch?

You can test the pressure switch for continuity using a multimeter. Disconnect the power and the switch. Set your meter to ohms or continuity. Blow into the pressure switch port and check for a change in continuity between the terminals. Consult the wiring diagram for the correct terminals.

•Where is the water inlet valve located?

The water inlet valve is typically located at the back of the washing machine, where the water supply hoses connect. You may need to remove the back panel to access it.

•What does MCU stand for, and where is it located?

MCU stands for Main Control Unit. It's the computer brain of the washer and controls all functions. It's usually located behind the control panel.

Hotpoint Washer Filling with Water When Off: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the pressure switch?

•Where is the water inlet valve located?

•What does MCU stand for, and where is it located?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: