Admiral Washer Error Code Sud LOC: Troubleshooting Guide... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) monitors the water level via a pressure sensor. It also controls the drain pump. When excessive suds are detected, indicated by a prolonged drain time and readings from the pressure sensor, the MCU throws the Sud LOC error to prevent damage and inefficient operation. The voltage path involves the pressure sensor sending an analog signal (e.g., 0-5V DC) back to the MCU. The MCU interprets this voltage to determine water level and suds presence.

Symptoms:

The homeowner reports the washer stops mid-cycle and displays the error code Sud LOC. They may also observe excessive suds in the drum. The washer may not drain completely.

Possible Causes:

Using excessive laundry detergent.
Using non-HE detergent in an HE washer.
Faulty pressure sensor.
Blocked drain hose.
Failing drain pump.
MCU software glitch.

Solution:

1

Unplug the washer. Verify 120V AC power at the outlet with a multimeter.
2

Manually remove water. Check drain hose for kinks. Disconnect and inspect.
3

Access and clean the drain pump filter. Clear any obstructions.
4

Run a rinse/spin cycle (no detergent). Monitor drain time. It should complete within approximately 5 minutes.
5

If the error persists, suspect the pressure sensor. Refer to the service manual for proper testing procedures and voltage ranges. Typically, you'll use a multimeter to measure the sensor's resistance or voltage output while applying pressure to the sensor port.
6

If the pressure sensor tests okay, replace the drain pump. Verify the new pump is rated for the correct voltage (120V AC).
7

As a last resort, consider MCU replacement, but only after eliminating other possibilities.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Capacitors in the control board can hold a charge even after the unit is unplugged. Exercise caution when working near electrical components. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization.

Prevention:

Always use HE (High Efficiency) detergent in the recommended amount. Refer to the detergent packaging and the washer's user manual for guidance. Periodically run an empty washer with a washing machine cleaner to remove buildup.

Expert Tip:

Some Admiral washers have a service mode that allows you to run diagnostic tests. Consult the service manual for the specific button sequence to enter service mode. This often involves pressing two buttons simultaneously for a few seconds (e.g., Start/Pause and Option button).

Frequently Asked Questions

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

The drain pump filter is typically located behind a small access panel on the lower front of the washer. You may need a flathead screwdriver to pry open the panel. Place a towel underneath to catch any spilled water. Rotate the filter cap counterclockwise to remove and clean it.

•What is HE detergent and why is it important to use in my HE washer?

HE detergent is specifically formulated for high-efficiency washers. It produces fewer suds than regular detergent, which prevents over-sudsing and ensures proper cleaning and draining in HE machines. Using non-HE detergent can lead to Sud LOC errors and damage to the washer.

•Where can I find the service manual for my specific Admiral washer model?

You can often find service manuals online by searching for the model number of your washer followed by "service manual." Websites like AppliancePartsPros, RepairClinic, and ManualsLib may have downloadable PDFs. You can also contact Admiral's customer support for assistance.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

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

•What is HE detergent and why is it important to use in my HE washer?

•Where can I find the service manual for my specific Admiral washer model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: