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Let's start with the basics first, why you are looking.
Is the drain hose extending more than 8" (20.3 cm) into the drainpipe?
The drain hose may be too far down inside the drainpipe (standpipe) or laundry tub. Drained water can siphon back into the washer if the drain hose extends too far down. Check that the drain hose does not extend more than 8" (20.3 cm) into the drainpipe or laundry tub. Using the U-shaped drain hose form, as described in the Installation Instructions, will provide the appropriate length of drain hose in the drainpipe or laundry tub.
Is the drain hose taped onto the drainpipe? Is top of the drainpipe covered in tape?
Do not seal the drain hose into the drainpipe with tape. The drain hose should be loose, yet secure. There must be a gap between the drain hose and the drainpipe to allow air to flow through. The air gap will break the suction. This will keep water from continuously being sucked out of the machine (siphoning) as it fills.
Is the drainpipe (standpipe) less than the minimum height of 39" (99 cm)?
Check that the top of the drain is at least 39" (99 cm) high (as measured from the floor.) If the drain is below 39" (99 cm), the water will start to flow out of the machine due to gravity. The flow of water can create suction (siphon) and the water will continue to drain out of the washer.
This is copied from Maytag's website
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