Whirlpool Top Load Washer Draining Slowly: Troubleshootin... | appliancefaults.com

Technical Background:

The washer's Main Control Unit (MCU) controls the drain pump based on signals from the water level sensor (pressure switch). When the MCU detects the water level has dropped to the appropriate level after a drain cycle, it de-energizes the drain pump relay. Voltage is supplied to the pump via the control board through wire harnesses and connectors. Any interruption in this voltage path, or a faulty pump, will result in slow or no draining.

Symptoms:

The washer is taking an excessively long time to drain, leaving water sitting in the tub after the wash cycle is complete. The washer may display an error code related to draining, or it may simply continue to run without draining effectively.

Possible Causes:

Clogged drain hose
Debris in the drain pump
Kinked or obstructed drain hose
Faulty drain pump motor
Blocked air vent
Failed pressure switch

Solution:

1

Disconnect power to the washer by unplugging it from the outlet or turning off the breaker in the breaker panel.
2

Inspect the drain hose for kinks or obstructions. Disconnect the hose from the washer and the drainpipe. Clear any blockages with pliers or a snake.
3

Check the drain pump for debris. Remove the pump access panel (usually at the front bottom of the washer) using a 1/4-inch nut driver. Remove any visible debris from the pump impeller.
4

Use a multimeter to test the drain pump motor for continuity. The drain pump wires typically receive 120V AC during the drain cycle. If there is no continuity or voltage, the pump may be faulty and need replacement.
5

Check the air vent to ensure it is not blocked. The air vent is a small hose connected to the tub that allows air to escape during draining. A blockage can create a vacuum, slowing the drain.
6

Inspect the pressure switch and hose. Disconnect the pressure hose from the switch and blow through it. A blockage here could cause incorrect water level readings.
7

Reassemble all components and test the washer by running a short drain cycle.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. High voltage is present in the washer's electrical components. Use proper Lock Out/Tag Out (LOTO) procedures to prevent accidental energizing of the circuit.

Prevention:

Periodically check and clean the drain pump filter (if equipped) to remove lint and debris. Avoid overloading the washer, as this can contribute to clogs. Use the correct amount of detergent.

Expert Tip:

Many Whirlpool washers have a diagnostic mode. To enter service mode, consult the service manual for the specific model. Often, it involves pressing a combination of buttons in a specific sequence (e.g., Press Power, then three times the start button, then the Power button).

Frequently Asked Questions

•How do I access the drain pump on my specific Whirlpool washer model?

The location of the drain pump access panel varies depending on the model. Consult your washer's service manual or search online for a specific diagram or video tutorial for your model number. Generally, it's located at the bottom front of the machine.

•What is the correct voltage I should be seeing at the drain pump during the drain cycle?

The drain pump should receive approximately 120V AC during the drain cycle. Use a multimeter to verify this voltage. If there's no voltage, the issue likely lies within the control board or wiring harness.

•Where is the air vent located, and how do I clear a blockage?

The air vent is usually a small hose connecting the outer tub to the cabinet frame, near the top of the machine. To clear a blockage, disconnect the hose from both ends and blow air through it. Ensure the vent isn't pinched or collapsed.

Whirlpool Top Load Washer Draining Slowly: Troubleshooting & Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drain pump on my specific Whirlpool washer model?

•What is the correct voltage I should be seeing at the drain pump during the drain cycle?

•Where is the air vent located, and how do I clear a blockage?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: