The analogue water pressure sensor detects the level of water in the tub.
As the water fills the tub it rises in a hose linked to the switch and in doing so it increases the air pressure in the hose which acts upon the switch. When the air pressure reaches the amount of pressure equivalent to the water level as selected by you for the wash cycle it turns off the water.
It could be something as simple as a loose or blocked water level pressure hose or a faulty water level pressure switch.
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To prove the hose is not blocked, remove it at both ends and check if you can blow air through it OK.
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Here's are some links with videos that show how to replace either part. They're only shown to make it easier for you to initially check if the hose it OK and not blocked or come adrift and if the switch is OK.
Hi @juliet5401
The analogue water pressure sensor detects the level of water in the tub.
As the water fills the tub it rises in a hose linked to the switch and in doing so it increases the air pressure in the hose which acts upon the switch. When the air pressure reaches the amount of pressure equivalent to the water level as selected by you for the wash cycle it turns off the water.
It could be something as simple as a loose or blocked water level pressure hose or a faulty water level pressure switch.
To prove the hose is not blocked, remove it at both ends and check if you can blow air through it OK.
Here's are some links with videos that show how to replace either part. They're only shown to make it easier for you to initially check if the hose it OK and not blocked or come adrift and if the switch is OK.
[https://www.appliancepartspros.com/whirlpool-hose-air-trap-wpw10004260-ap6014706.html|pressure hose] (part # WPW10004260)
[https://www.appliancepartspros.com/whirlpool-switch-wl-wpw10415587-ap6021127.html|water level pressure switch] (part # WPW10415587]
''Note:'' If either part is faulty, search online for the ''part number only'' to find suppliers that suit you best.