Customer Questions and Answers for Timer by Whirlpool

Hello Nick, You need to check the water level switch and the water inlet valve. If your unit has a serial number beginning with 19 or lower, you will use the water level switch (AP4025680). If your serial number begins with 20 or higher, you will need water level switch (AP4024470). If the water inlet valve is the issue and your serial number is 10 or lower, you will need to order part number (AP4045669). If your serial number is 11 or higher, you will need water inlet valve (AP4024482).