Amana Washer Filling Slowly: Troubleshooting Guide -... | appliancefaults.com

Technical Background:

The washing machine's main control unit (MCU) controls the water inlet valve by sending a 120V AC signal. The MCU relies on the pressure switch or water level sensor to determine when the tub is full. A faulty pressure switch, sensor, or wiring harness can interrupt this process. The voltage path originates from the breaker panel to the MCU, then to the water inlet valve.

Symptoms:

The washing machine takes an excessively long time to fill with water during the wash cycle. Clothes may be dry or only partially wet after what seems like a normal fill time. The wash cycle may not complete.

Possible Causes:

Low water pressure to the house.
Clogged inlet screens.
Kinked or blocked water supply hoses.
Faulty water inlet valve.
Defective pressure switch or sensor.
Malfunctioning main control board (MCU).

Solution:

1

Turn off the water supply to the washing machine at the shut-off valves.
2

Disconnect the water supply hoses from the back of the washer.
3

Inspect the inlet screens for sediment or debris. Clean them with a brush or replace them if necessary.
4

Check the water supply hoses for kinks or obstructions. Replace them if damaged.
5

Reconnect the water supply hoses and turn the water supply back on.
6

Start a wash cycle and observe the water fill. If the fill is still slow, use a multimeter to check for 120V AC at the water inlet valve terminals during the fill cycle. If voltage is present and the valve is not opening properly, replace the water inlet valve.
7

If no voltage is present, the problem may be with the pressure switch, water level sensor, or the main control board (MCU).

Safety Warning:

Disconnect power to the washing machine at the breaker panel before performing any repairs. Lock-out/Tag-out (LOTO) procedures must be followed. High voltage (120V AC) is present in the appliance; take appropriate precautions.

Prevention:

Periodically inspect and clean the water inlet screens (every 6 months). Ensure water supply hoses are free of kinks and damage. Check house water pressure periodically.

Expert Tip:

Many Amana washers have a diagnostic mode. Consult the tech sheet (usually located behind the kick panel or inside the control panel) for the specific service mode entry sequence for the model to check for error codes and test individual components.

Frequently Asked Questions

•How do I test the pressure switch on my Amana washer?

Using a multimeter, check for continuity across the pressure switch terminals when the tub is empty and again when it's filled to the appropriate level. The switch should change state (open or close) when the water level changes. Refer to the wiring diagram for the correct terminals.

•What is the correct water pressure for an Amana washing machine?

The ideal water pressure is typically between 20 and 100 PSI. Low water pressure can cause slow filling. You can use a water pressure gauge at an outside spigot to test the pressure.

•Where can I find a replacement water inlet valve for my Amana washer?

You can find replacement parts at most appliance parts retailers, both online and in brick-and-mortar stores. Have your model number ready to ensure you get the correct valve. Common brands include Whirlpool (which owns Amana), Supco, and aftermarket parts.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the pressure switch on my Amana washer?

•What is the correct water pressure for an Amana washing machine?

•Where can I find a replacement water inlet valve for my Amana washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: