Kenmore dishwasher H20
The tub did not fill. Open the valve and rinse the inlet screen.
- Dishwasher
- No fill
- Check the valve
Kenmore dishwasher H20 signals slow or insufficient fill — the tub did not receive enough water in time. Dishwashers need hot water at the inlet; a closed valve under the sink or a clogged inlet screen at the dishwasher valve causes most H20 codes on WDT750-class machines. Run hot water at the kitchen sink for 30 seconds before starting a cycle to purge cold water from the line.
Reviewed August 2025 · sources below
Safe to keep using?
Safe for limited use
No immediate safety hazard detected, but monitor during use.
- • Monitor the appliance during use and stop if symptoms worsen.
Next step
Still seeing H20?
Show a photo or describe the symptom. Answer a few safety-first questions and see whether a part is needed.
Free guided checks · No account required · Don’t open live electrical, gas, or refrigerant equipment
How to fix H20
- Confirm the hot water supply valve under the sink is fully open counterclockwise.
- Run hot water at the sink until it flows hot — purges cold slug in the supply line.
- Shut power, disconnect the inlet hose at the dishwasher, and rinse the screen at the valve inlet.
- Restore water and power, then start a rinse cycle and listen for fill in the first minute.
- Replace the water inlet valve only if fill remains slow with good hot-water pressure at the disconnected hose.
Call a pro when: Call a plumber for low hot-water pressure at all kitchen fixtures.
What H20 means
Not detecting water — confirm the supply valve is open and the inlet hose is not kinked.
Buy the replacement part
Likely causes
The shutoff under the sink is closed, or the inlet hose is pinched behind the unit.
Check: Confirm kitchen taps have water, fully open the dishwasher shutoff valve, and straighten the inlet hose.
Est. cost: $0–$0
The solenoid valve can stick or fail so water never enters the tub.
Check: If the supply is open and the hose screen is clear, replace the water inlet valve.
Est. cost: $25–$75
Part: Water inlet valve (MPN WPW10327249)
Guided repair checklist
Complete the safe checks one at a time. Progress is saved for this browser so you can continue later.
0 of 5 checks recorded
Recommended next action
Start with this check before considering replacement parts.
Check 1 of 5
Confirm the hot water supply valve under the sink is fully open counterclockwise.
Did the repair resolve the issue?
Restoring repair progress…
Questions about H20
What does H20 mean on a Kenmore dishwasher?
H20 is a fill timeout — insufficient water entered the tub during the fill window.
How do I reset Kenmore H20?
Restore hot water supply, purge the line at the sink, power off 5 minutes, then rerun.
Do I need a part for H20?
Clean inlet screens first — inlet valves fail less often than clogged screens or closed valves.
Can new install cause H20?
Yes if the hot valve was left closed or the line was not purged after hookup.
Kenmore H20 on specific models
Other Kenmore Dishwasher codes
Prevent this problem next time
- Keep the dishwasher supply valve fully open
- Do not pinch the inlet hose when sliding the unit in
Sources
Manufacturer meaning
Not detecting water — the tub is not filling.
FixApplianceCode guidance
Open the Kenmore dishwasher supply valve and check the inlet hose before replacing the water inlet valve.
Source type: Manufacturer
Source: Kenmore dishwasher water-detection documentation
Last reviewed: 2026-08-24
Repair guidance is for informational purposes only. We do not guarantee that any fix will resolve your issue, and you assume all risk when following these steps. Terms & disclaimer
As an Amazon Associate I earn from qualifying purchases. Some links may also earn other retailer commissions, at no additional cost to you. Affiliate disclosure