LG · Laundry · WM4000HBA · Owner's Manual
Clean the Drain Pump Filter and Prepare for Storage or Freezing from LG WM4000HBA Owner's Manual. Read the extracted page 40-41, related manual answers, and source citation.
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The washer can fail to drain if the drain pump filter becomes clogged. LG recommends cleaning the drain filter periodically to help prevent clogging from foreign objects.
Before you start - Turn off the washer and unplug the power cord. - Be careful: if there is water in the drum, opening the drain filter can cause water to overflow. - Use a bucket if the drum is not completely drained before you open the drain filter. - Do not use the washer without the drain filter, and do not use it with the drain filter assembled incorrectly. This can cause leaks or malfunction.
Steps to clean the drain pump filter 1. Open the drain pump filter cover. 2. Drain any remaining water. - Unclip the drain hose and remove the plug from the drain hose to let the remaining water drain out. 3. Remove the pump filter. - Twist the pump filter counterclockwise to remove it. 4. Clean the pump filter and the opening. 5. Reassemble the plug onto the drain hose and reclip the drain hose. 6. Insert the drain pump filter and twist it clockwise. 7. Close the drain pump filter cover.
Helpful note - If an OE message blinks on the display, the drain pump filter is clogged with dirt. Clean the drain pump filter.
If the washer will not be used for a long time and may be exposed to freezing temperatures, follow these steps to protect it from damage. Make sure the drum is empty before you begin.
Storing the washer 1. Turn off the washer and unplug the power cord. 2. Turn off the water faucets. 3. Disconnect the water inlet hoses and drain any water from the hoses. 4. Plug the power cord into a properly grounded electrical outlet. 5. Add 1 gallon of nontoxic recreational vehicle (RV) antifreeze to the empty drum and close the door. - Never use automotive antifreeze. 6. Turn on the washer and press the Spin button. 7. Press Start/Pause to start the drain pump for 1 minute. - This expels some of the antifreeze and leaves enough to protect the washer from damage. 8. Turn off the washer and unplug the power cord. 9. Dry the drum interior with a soft cloth and close the door. 10. Store the washer in an upright position. 11. Remove the inserts from the dispenser, drain any water from the compartments, and let them dry.
After storage - To remove the antifreeze from the washer after storage, run the Rinse+Spin cycle using detergent. - Do not add laundry to this cycle.
When the water inlet hoses are frozen 1. Turn off the washer and unplug the power cord. 2. Turn off the faucets connected to the water inlet hoses. 3. Pour hot water on the frozen faucets to thaw the water inlet hoses and remove the water inlet hoses.
LG WM4000HBA Owner's Manual, extracted pages 40-41
No. The manual says to never use automotive antifreeze. Use 1 gallon of nontoxic recreational vehicle (RV) antifreeze instead.
An IE error message may blink when the water pressure is low or an inlet filter is clogged with dirt. Clean the inlet filter.
An OE message blinking on the display means the drain pump filter is clogged with dirt. Clean the drain pump filter.
Pour hot water into the washer drum and close the door, wait 1 to 2 hours, then press Power, choose Spin for a spin-only cycle, and press Start/Pause to make sure the water drains.
Immerse the water inlet hoses in hot water to thaw them, reconnect them to the washer and faucets, turn on the faucets, then press Power, choose Spin for a spin-only cycle, and press Start/Pause.
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