LG Washing Machine Medic Rinse and Pre Wash Blinking Error
If your LG washing machine display is flashing the 'Medic Rinse' and 'Pre Wash' indicators simultaneously, it typically signals a communication breakdown between the main PCB and the display board. This error can also be triggered by a faulty water level sensor or a voltage fluctuation affecting the control module.
Step-by-Step Reset Procedure
- Power off the washing machine by pressing the Power button.
- Unplug the power cord from the wall socket completely.
- Wait for at least 10 to 15 minutes to allow the capacitors on the PCB to discharge fully.
- Plug the machine back in and attempt to start a new cycle to see if the error persists.
Safe Steps to Try Before Calling a Technician
- Check your home's main power supply for loose connections or voltage instability.
- Inspect the wiring harness between the top control panel and the main board for any signs of rodent damage or loose connectors.
- Ensure the water inlet valves are fully open and there is adequate water pressure, as low pressure can sometimes confuse the sensor logic.
- Clean the drain pump filter to ensure no debris is causing a system-wide sensor error.
Always disconnect the power supply before opening any panels. If you are uncomfortable handling electrical components, please contact a certified technician to avoid the risk of electric shock.
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Frequently Asked Questions
Does this blinking pattern always mean the PCB is damaged?
Not necessarily. While it often points to a communication error, it can also be caused by a loose wire or a temporary glitch due to power surges common in many areas.
Can I continue using the machine if the lights are blinking?
No, the machine will likely remain in a locked state for safety reasons. It is best to perform the reset procedure before attempting further use.
What should I do if the reset procedure does not stop the blinking?
If the lights continue to blink after a hard reset, the issue is likely a hardware failure in the PCB or a faulty sensor that requires professional diagnostic equipment.
Is this error related to the water supply?
Sometimes, if the machine cannot detect water levels correctly, it may trigger a sensor fault. Ensure your inlet hoses are not kinked or blocked.
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