Whirlpool Washer: Clogged Water Level Pressure Switch... | appliancefaults.com

Technical Background:

MCU logic and voltage paths.
The water level pressure switch senses the water level in the tub by measuring the air pressure in the hose connected to the tub. This pressure is converted into an electrical signal that is sent to the Central Control Unit (CCU). The CCU then controls the water inlet valve to fill the tub to the correct level. A blockage in the pressure switch hose prevents accurate pressure readings, leading to incorrect water levels. The CCU uses 120V AC to trigger the water valve based on pressure switch feedback.

Symptoms:

US homeowner observations.
The washer is overfilling, underfilling, or not filling with water at all. It may also display error codes related to water level or pressure.

Possible Causes:

Clogged pressure switch hose with lint or debris.
Kinked or damaged pressure switch hose.
Defective water level pressure switch.
Malfunctioning water inlet valve.
Issues with the Central Control Unit (CCU).

Solution:

1

Disconnect power to the washer at the breaker panel (LOTO).
2

Locate the pressure switch, usually behind the control panel or near the top of the machine. Remove the access panel using a 1/4-inch nut driver.
3

Disconnect the pressure switch hose from the pressure switch and the tub.
4

Inspect the hose for clogs, kinks, or damage. Use compressed air or a small brush to clear any obstructions.
5

If the hose is damaged, replace it with a new one.
6

Reconnect the pressure switch hose to the pressure switch and the tub securely.
7

Restore power to the washer at the breaker panel and test the operation.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. This appliance operates on 120V AC, which can cause serious injury or death.

Prevention:

Run a washer cleaner cycle monthly to help prevent lint and debris buildup in the system. Periodically inspect the pressure switch hose for any signs of damage or wear.

Expert Tip:

To access the diagnostic mode on many Whirlpool washers, press and hold the Start/Pause button for 3 seconds, then rotate the cycle selector knob rapidly counterclockwise, then clockwise, then counterclockwise again within 6 seconds. This will allow you to view error codes and run diagnostic tests.

Frequently Asked Questions

•How do I test the water level pressure switch to see if it's faulty?

You can use a multimeter to test the continuity of the pressure switch. Disconnect the wires from the switch and use the multimeter to check for continuity between the terminals as you gently blow into the hose connection. The continuity should change as the pressure changes.

•Where can I find a replacement pressure switch hose for my Whirlpool washer?

You can find replacement hoses at most appliance parts retailers, both online and in brick-and-mortar stores. Be sure to have the model number of your washer handy to ensure you get the correct part.

•What is the proper water level for my Whirlpool washer?

The proper water level depends on the load size and the cycle selected. Consult your owner's manual for the recommended water levels for each cycle. If the washer consistently overfills or underfills, even after cleaning the pressure switch hose, there may be a problem with the pressure switch or the CCU.

Whirlpool Washer: Clogged Water Level Pressure Switch Hose Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the water level pressure switch to see if it's faulty?

•Where can I find a replacement pressure switch hose for my Whirlpool washer?

•What is the proper water level for my Whirlpool washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: