Hotpoint Washer Fills and Immediately Drains:... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) controls the water inlet valve and the drain pump. The pressure switch provides feedback to the MCU about the water level. If the MCU receives incorrect signals from the pressure switch or a short circuit exists in the drain pump circuit, the drain pump may activate prematurely. Incorrect voltage paths due to wiring issues can also cause this.

Symptoms:

The washing machine starts to fill with water normally, but as soon as the water level reaches a certain point, it immediately starts draining out. The machine does not agitate or proceed with the wash cycle.

Possible Causes:

Drain hose improperly installed or too low.
Faulty drain valve or drain pump continuously running.
Defective water level pressure switch.
Clogged drain line.
Malfunctioning Main Control Unit (MCU).
Air lock in the drain system.

Solution:

1

Ensure the drain hose is installed correctly, with an air gap and not pushed too far into the drainpipe. The top of the drain hose must be higher than the highest water level in the tub.
2

Unplug the washer and access the drain pump. Disconnect the wiring harness from the drain pump and check for continuity across the pump motor terminals. An open circuit indicates a faulty pump.
3

Check the pressure switch hose for cracks or blockages. Disconnect the hose from the tub and the pressure switch. Clear any obstructions.
4

Use a multimeter to check the voltage at the drain pump while the washer is filling. There should be 0V AC. If you measure 120V AC, the MCU or wiring is likely faulty.
5

Inspect the MCU for any visible signs of damage, such as burned components or corrosion.
6

Test the pressure switch using a multimeter. With the tub empty, it should read open. When you gently blow into the pressure switch tube, it should close.
7

Clear the drain line by disconnecting the drain hose and flushing it with water.

Safety Warning:

Disconnect power to the appliance at the breaker panel before performing any repairs. High voltage is present inside the washing machine. Always use proper safety equipment, including insulated gloves and eye protection. Lock Out Tag Out (LOTO) procedures must be followed.

Prevention:

Periodically inspect the drain hose for kinks or clogs. Clean the drain pump filter if accessible. Avoid overloading the washing machine.

Expert Tip:

Many Hotpoint washers have a diagnostic mode. Typically, pressing and holding the start button for 5 seconds while in standby mode will activate the diagnostic cycle. Observe the error codes displayed, which can provide valuable clues about the problem.

Frequently Asked Questions

•How do I access the drain pump on my Hotpoint washer?

Accessing the drain pump usually involves removing the front panel or the lower access panel of the washing machine. You may need a 1/4-inch nut driver and a putty knife to release the clips holding the panel in place. Always disconnect power before disassembling.

•What voltage should I expect to see at the drain pump when the washer is filling?

Ideally, you should see 0V AC at the drain pump terminals when the washer is filling. Any voltage present during the fill cycle indicates a potential problem with the MCU or the wiring.

•Where is the pressure switch located on my Hotpoint washer?

The pressure switch is typically located near the top of the washer, often behind the control panel. It is a small, round component with a hose connected to it. Consult your washer's service manual for the exact location.

Hotpoint Washer Fills and Immediately Drains: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drain pump on my Hotpoint washer?

•What voltage should I expect to see at the drain pump when the washer is filling?

•Where is the pressure switch located on my Hotpoint washer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: