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

Technical Background:

The washer's main control unit (MCU) controls the water inlet valve via a 120V AC signal. The MCU receives input from the water level pressure switch. When the water reaches the desired level, the pressure switch signals the MCU to shut off the voltage to the inlet valve. A malfunction in any of these components can cause continuous filling.

Symptoms:

The homeowner observes that their Amana washing machine continues to fill with water even when the power is off or the wash cycle is complete. This can lead to overflowing and potential water damage.

Possible Causes:

Faulty Inlet Valve
Defective Water Level Pressure Switch
Malfunctioning Main Control Unit (MCU) / Timer
Siphon Effect from Drain Hose
Damaged or Leaking Water Hoses

Solution:

1

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

Inspect the water inlet valve for physical damage or corrosion.
3

Use a multimeter to test the inlet valve solenoid for continuity. A reading of OL (open loop) indicates a faulty solenoid. Replace the valve.
4

Check the water level pressure switch hose for kinks, clogs, or leaks. Clean or replace as needed.
5

Disconnect the pressure switch and use a multimeter to test its continuity in the empty and full tub states. Replace if faulty.
6

Inspect the drain hose connection to the drain standpipe. Ensure it has an air gap to prevent siphoning.
7

If the above steps don't resolve the issue, suspect a faulty MCU. Replacement requires a qualified technician.

Safety Warning:

Disconnect power to the washer at the breaker panel before performing any repairs. High voltage is present in the appliance. Always use appropriate safety precautions.

Prevention:

Regularly inspect the water hoses for cracks or bulges. Clean the water inlet valve screens periodically to prevent clogging. Ensure the drain hose is properly positioned and secured.

Expert Tip:

Many Amana washers have a service mode. To enter service mode, simultaneously press and hold the Start/Pause and Cycle Signal buttons for 3 seconds. This allows you to run diagnostic tests on individual components.

Frequently Asked Questions

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

Disconnect the power to the washer. Locate the water inlet valve, typically at the back of the machine where the water hoses connect. Disconnect the wires from the solenoid. Set your multimeter to the ohms setting (resistance). Place one probe on each terminal of the solenoid. A reading between 500 and 1500 ohms is usually considered normal. A reading of OL (open loop) indicates a faulty solenoid.

•Where is the water level pressure switch located?

The water level pressure switch is typically located inside the control panel or on the back panel of the washer. It's connected to the tub via a small rubber hose. You may need to remove the control panel or back panel to access it.

•What does LOTO mean, and why is it important?

LOTO stands for Lockout/Tagout. It's a safety procedure that involves disconnecting the power source (locking out the breaker) and attaching a tag to the breaker panel to indicate that the appliance is being serviced and should not be energized. This prevents accidental electrocution or injury.

Amana 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?

•What does LOTO mean, and why is it important?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: