Check the Water Inlet Valve
- Inspect the water inlet valve for any signs of defect or wear. A malfunctioning valve may allow water to continuously flow into the machine.
- Clean the valve filters or screens; sediment buildup can cause erratic valve behavior.
- If the valve is damaged or excessively worn, replace it with the manufacturer-approved part.
Examine the Water Level (Pressure) Switch
- Locate the water level switch. This component monitors the water level inside the tub using a pressure hose.
- Inspect the hose for cracks, blockages, or kinks that may cause it to send incorrect signals to the control board.
- Test the switch with a multimeter if possible. An inconsistent reading might indicate the need to replace the switch.
Inspect the Float Assembly
- Some washing machines have a float that rises with the water level to shut off the inlet. Check for any obstructions, breakage, or misalignment in this mechanism.
- Ensure that the float is moving freely and returning to its original position after each cycle.
Review the Detergent Usage
- Excessive or overly concentrated detergent can create extra suds, triggering sensors that misinterpret the water level as higher than it is.
- Follow the detergent manufacturer's and machine manufacturer's guidelines for proper dosage.
- Use high efficiency (HE) detergents if your machine recommends them.
Check the Drain Pump and Filters
- Clogs in the drain pump or in the filters might cause backups, leading the machine’s sensors to overcompensate by adding more water.
- Clean out any debris from the pump area and filters to ensure unobstructed drainage.
- Listen for unusual noises from the pump that might indicate mechanical failure or blockages.
Inspect the Control Board and Sensors
- Modern washing machines rely on a central control board to interpret signals from various sensors. A glitch in this board can cause incorrect water levels.
- Look for signs of moisture or burnt components on the board.
- If you suspect a problem here, consult a professional technician who can safely test and, if necessary, replace the control board.
Test the Appliance in a Controlled Cycle
- After addressing potential causes, run a short wash cycle while closely observing the water level.
- Check for recurring issues and note any error codes, as these can further pinpoint a malfunctioning component.
- Re-test after making one change at a time to ensure the issue is resolved without introducing new problems.
When to Call a Professional
- If the above steps do not resolve the overflowing issue or if you’re uncomfortable performing internal checks, it is best to contact a qualified technician.
- A professional will have the tools and expertise to safely diagnose electrical issues, faulty sensors, or mechanical wear affecting the water level controls.
