Roper Washer Filling with Water When Off: Troubleshooting... | appliancefaults.com

Technical Background:

The Roper washer's Main Control Unit (MCU) controls the operation of the water inlet valve. The MCU sends a 120V AC signal to the valve, opening it and allowing water to flow into the tub. When the desired water level is reached, the pressure switch signals the MCU, which then cuts power to the valve, closing it. Faults in this system can cause the valve to remain open, leading to continuous filling.

Symptoms:

The homeowner observes that their Roper washing machine continues to fill with water even when it is turned off and not in use. The water level slowly rises, eventually overflowing the tub.

Possible Causes:

Faulty water inlet valve
Defective water level pressure switch
Siphon effect from drain hose
Malfunctioning Main Control Unit (MCU)
Wiring harness issue causing valve to stay open

Solution:

1

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

Turn off both hot and cold water supply valves to the washer.
3

Inspect the water inlet valve for any physical damage or corrosion. Using a multimeter, test the valve coil for continuity. A reading of OL (open line) indicates a faulty coil and requires replacement.
4

Check the water level pressure switch and its hose for clogs or damage. Disconnect the hose from the switch and blow into it to ensure it's clear. If the switch appears damaged or doesn't click when pressure is applied, replace it.
5

Examine the drain hose connection. Ensure the drain hose is properly inserted into the standpipe and is not pushed in too far, which can create a siphon effect. The top of the drain hose should be at least 30 inches above the floor.
6

If the above steps don't resolve the issue, the MCU might be defective. This requires further testing, best left to a qualified technician, who can check the voltage signal to the water inlet valve with a multimeter to verify if the MCU is sending the wrong signal.
7

Inspect the wiring harness between the MCU and the water inlet valve for any shorts or damage.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. The Roper washer operates on 120V AC, which can cause serious injury or death. Follow Lock-Out/Tag-Out (LOTO) procedures.

Prevention:

Periodically check the water inlet valve hoses for leaks or cracks. Ensure the drain hose is properly positioned and not creating a siphon. Clean the lint filter regularly to prevent clogs that can affect water levels.

Expert Tip:

Some Roper models have a diagnostic mode. To access it, try pressing and holding the Start/Pause button while simultaneously pressing another button (consult the service manual for the specific button combination for your model). This can reveal error codes that provide more insight into the issue.

Frequently Asked Questions

•How do I test the water inlet valve with a multimeter?

Disconnect the washer from the power supply. Disconnect the wires from the water inlet valve solenoid. Set your multimeter to the ohms setting. Place the probes on the terminals of the solenoid. A reading between 500 and 1500 ohms is typically expected. An OL (open line) reading indicates a faulty solenoid.

•Where is the water level pressure switch located?

The water level pressure switch is usually located near the bottom of the washer cabinet, accessible from the rear or side panel. It's a small, round or rectangular device with a small hose connected to it.

•How do I prevent a siphon effect from the drain hose?

Ensure the drain hose is properly inserted into the standpipe but not pushed in too far (no more than 6 inches). Make sure the top of the standpipe is at least 30 inches above the floor. You can also use a hose clamp to secure the drain hose to the standpipe.

Roper 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 water inlet valve with a multimeter?

•Where is the water level pressure switch located?

•How do I prevent a siphon effect from the drain hose?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: