Hotpoint Washer Water Level Sensor Tube Clogged:... | appliancefaults.com

Technical Background:

The washer's Main Control Unit (MCU) uses a pressure sensor to determine the water level. The pressure sensor is connected to the tub via a small tube. As the water level rises, air pressure in the tube increases, and the sensor sends a voltage signal (typically 0-5V DC) back to the MCU. The MCU then controls the water inlet valve based on this voltage signal. A clogged tube prevents accurate pressure readings, leading to incorrect water levels.

Symptoms:

The homeowner reports the Hotpoint washer is overfilling, underfilling, or not filling at all. Clothes may be soaking wet after the cycle, or the washer may stop mid-cycle with a water level error. You might hear the water valve constantly running or not running at all.

Possible Causes:

Soap scum buildup inside the pressure sensor tube.
Mineral deposits clogging the tube.
Kinked or damaged pressure sensor tube.
Defective pressure sensor.
Loose connection at the pressure sensor or MCU.
Defective water inlet valve.

Solution:

1

Unplug the washer from the 120V AC outlet.
2

Locate the pressure sensor, typically near the bottom of the washer cabinet, and the pressure sensor tube connecting it to the outer tub.
3

Disconnect the pressure sensor tube from both the pressure sensor and the outer tub.
4

Inspect the tube for kinks, cracks, or damage. Replace if necessary.
5

Flush the tube with warm water and a mild detergent solution to remove soap scum and mineral deposits. Use a small brush or pipe cleaner if needed. Ensure the tube is completely clear.
6

Reconnect the pressure sensor tube to the pressure sensor and the outer tub, ensuring a secure fit.
7

Plug the washer back into the 120V AC outlet and run a test cycle to verify proper water level operation.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. Voltages present can be lethal.

Prevention:

Use High-Efficiency (HE) detergent sparingly. Run a washer cleaning cycle with a washer cleaner product monthly to prevent soap scum buildup.

Expert Tip:

Many Hotpoint washers have a service mode. Access it by pressing and holding the Start/Pause button, then pressing the Power button. Rotate the cycle selector knob to access diagnostic tests, including a pressure sensor test.

Follow-up Questions:

Frequently Asked Questions

•What voltage should I expect to see at the pressure sensor connector when the tub is empty?

With the tub empty, you should expect to see a voltage close to 0V DC, typically between 0.2V and 0.5V DC. This baseline voltage indicates the sensor is functioning.

•How do I test the pressure sensor itself if the tube is clear?

Use a multimeter to measure the resistance across the sensor's terminals. Then, gently blow into the sensor's port and observe the resistance change. If the resistance doesn't change, the sensor is likely defective. You can also use a syringe to apply pressure while observing the sensor's voltage output.

•What size is the pressure sensor tube, and where can I purchase a replacement?

The pressure sensor tube is typically 1/4-inch inside diameter. You can purchase a replacement tube at most appliance parts retailers or online. Ensure the replacement tube is compatible with your Hotpoint washer model.

Hotpoint Washer Water Level Sensor Tube Clogged: Symptoms and Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What voltage should I expect to see at the pressure sensor connector when the tub is empty?

•How do I test the pressure sensor itself if the tube is clear?

•What size is the pressure sensor tube, and where can I purchase a replacement?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: