Roper Washer Water Level Sensor Tube Clogged: Symptoms... | appliancefaults.com

Technical Background:

The MCU uses the water level pressure switch to determine the water level in the tub. The switch detects air pressure changes created by the water level rising. This pressure is transmitted through the hose. A voltage signal is sent back to the MCU to shut off the fill valves. If the hose is blocked, the pressure doesn't register correctly, causing filling problems.

Symptoms:

The Roper washer is either overfilling, not filling, or displaying an error code related to the water level sensor. You might notice excessive suds or the washer stopping mid-cycle.

Possible Causes:

Soap scum buildup in the pressure switch hose.
Kinked or damaged pressure switch hose.
Defective water level pressure switch.
Clogged air dome in the outer tub.
Malfunctioning MCU (Main Control Unit).
Low water pressure to the fill valves.

Solution:

1

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

Locate the pressure switch, usually behind the control panel or near the base of the machine. You might need a 1/4-inch nut driver to remove access panels.
3

Carefully detach the pressure switch hose from both the pressure switch and the outer tub.
4

Inspect the hose for kinks, cracks, or obstructions. Clean the hose thoroughly with warm water and a mild detergent, using a small brush to dislodge any soap scum. Use a multimeter to test continuity of the hose, confirming no punctures or cracks.
5

Check the air dome on the outer tub for clogs. It's where the hose connects to the tub. Use a wire or small tool to clear any obstructions.
6

Reconnect the pressure switch hose to the pressure switch and the outer tub, ensuring a secure fit.
7

Restore power to the washing machine and run a test cycle. Monitor the water level and ensure the washer fills and operates correctly. Use a manometer to measure pressure in the hose while filling to ensure correct sensor operation.

Safety Warning:

Disconnect power to the washing machine at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. High voltage is present when the machine is powered on.

Prevention:

Use High Efficiency (HE) detergent and follow the manufacturer's recommended amount. Run a washer cleaning cycle monthly with a washing machine cleaner to prevent soap scum buildup. Periodically inspect the pressure switch hose for any signs of damage or wear.

Expert Tip:

Many Roper washers have a service mode accessible by pressing a specific sequence of buttons (consult the tech sheet behind the access panel). This mode allows you to run diagnostic tests and calibrate the water level sensor.

Frequently Asked Questions

•How do I access the pressure switch on my Roper washer?

The pressure switch is typically located behind the control panel or near the base of the machine. You may need to remove screws using a 1/4-inch nut driver to access the switch. Refer to your washer's service manual for specific instructions.

•What type of detergent should I use to prevent soap scum buildup?

Use only High Efficiency (HE) detergent. These detergents are designed to produce fewer suds, which helps prevent soap scum buildup in your washing machine.

•How can I test the pressure switch itself to see if it is working properly?

You can test the pressure switch using a multimeter. Disconnect the power to the washer. Disconnect the wires from the pressure switch. Set your multimeter to measure continuity. Blow gently into the pressure switch hose connection. You should see a change in continuity as the switch activates. If there is no change, the switch may be defective.

Roper Washer Water Level Sensor Tube Clogged: Symptoms and Solutions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the pressure switch on my Roper washer?

•What type of detergent should I use to prevent soap scum buildup?

•How can I test the pressure switch itself to see if it is working properly?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: