Method for detecting a low water level in a washing machine appliance
First Claim
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1. A washing machine appliance comprising:
- a cabinet;
a wash tub positioned within the cabinet and defining a wash chamber for receipt of a load of articles for washing;
a water control valve for regulating a flow of water from a water supply into the wash chamber; and
a controller operably coupled to the water control valve, the controller being configured for;
obtaining a target volume;
operating a valve to fill the wash tub to the target volume;
obtaining a tub water level;
obtaining a fill volume;
obtaining an underfill limit based at least in part on the fill volume;
determining that the tub water level is less than the underfill limit;
obtaining a new fill level based at least in part on the target volume in response to determining that the tub water level is less than the underfill limit; and
filling the wash tub to the new fill level.
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Abstract
A washing machine appliance includes a wash tub defining a wash chamber for receipt of a load of articles for washing and a water control valve for regulating a flow of water from a water supply into the wash chamber. A controller is configured for detecting a low water level in the wash chamber, e.g., due to a low water supply pressure, by obtaining a target volume and a fill volume; obtaining an underfill limit based at least in part on the fill volume; obtaining a tub water level after attempting to fill to the target volume; obtaining a new fill level if the tub water level is less than the underfill limit; and filling the wash tub to the new fill level.
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Citations
20 Claims
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1. A washing machine appliance comprising:
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a cabinet; a wash tub positioned within the cabinet and defining a wash chamber for receipt of a load of articles for washing; a water control valve for regulating a flow of water from a water supply into the wash chamber; and a controller operably coupled to the water control valve, the controller being configured for; obtaining a target volume; operating a valve to fill the wash tub to the target volume; obtaining a tub water level; obtaining a fill volume; obtaining an underfill limit based at least in part on the fill volume; determining that the tub water level is less than the underfill limit; obtaining a new fill level based at least in part on the target volume in response to determining that the tub water level is less than the underfill limit; and filling the wash tub to the new fill level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for filling a washing machine appliance, the washing machine appliance comprising a wash tub and a water control valve for regulating a flow of water into the wash tub, the method comprising:
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obtaining a target volume; operating a valve to fill the wash tub to the target volume; obtaining a tub water level; obtaining a fill volume; obtaining an underfill limit based at least in part on the fill volume; determining that the tub water level is less than the underfill limit; obtaining a new fill level based at least in part on the target volume in response to determining that the tub water level is less than the underfill limit; and filling the wash tub to the new fill level. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification