Dishwasher Not Filling With Water — Causes and Fixes
When a dishwasher runs but no water comes in (you hear it humming dry, or it errors early), the problem is on the water-supply side. Here is how to track it down.
1. Check the Supply Valve
There's a hot-water shutoff valve under the sink feeding the dishwasher. Make sure it's fully open — it sometimes gets bumped closed during under-sink work. This is the simplest cause.
2. Check the Float
The float inside the dishwasher tub (a small dome on the bottom) tells the dishwasher when it has enough water. If it's stuck in the up position (by debris), the dishwasher thinks it's full and won't add water. Make sure the float moves up and down freely and clean around it.
3. Clean the Inlet Valve Screen
The water inlet valve has a screen that traps sediment and can clog, restricting or stopping fill. Shut off the water and power, then check and clean the inlet valve screen.
4. Test the Water Inlet Valve
The inlet valve opens electrically to let water in. If the supply is on, the float moves freely, and the screen is clean but it still won't fill, the inlet valve has likely failed. It's a common, moderate DIY replacement located behind the lower front kick panel.
Parts & Tools
As an Amazon Associate we earn from qualifying purchases.
Related Error Codes
FAQ
Usually a closed under-sink supply valve, a stuck float telling it it's already full, a clogged inlet-valve screen, or a failed water inlet valve. Check the supply valve and float first.
It's a small dome or cylinder on the floor of the tub, usually in a front corner. It should move up and down freely; if debris jams it up, the dishwasher won't add water.
Always unplug an appliance and shut off its water supply before servicing. This guide is informational and not a substitute for a qualified technician.