What H2O means
The brand lists the potential cause of H2O as not detecting water: the dishwasher tried to fill and the control did not sense water arriving. Start with the supply, the valve under the sink, the house water pressure and the hose; if water is reaching the dishwasher and the code returns, the inlet valve or the water sensing needs a technician.
Error codes
Reference| Code | Meaning |
|---|---|
| H2O | Potential Cause: Not Detecting Water |
What you observe
- No fill sound at the start of the cycle — No hiss of water means nothing is arriving.
- The tub is dry after the first few minutes — The fill never happened.
- The code appears shortly after start — The control checks the fill early.
- NEAR MISS: the tub fills but dishes come out dirty — That is a wash or diverter question, not a fill one.
What usually sets this code
- Water supply valve closed or partly closed — The most common cause: the valve under the sink is closed after other work, or only part open.
- Inlet valve failed or its screen clogged — Second: a dead inlet valve or a blocked screen.
- Float stuck up or water level sensing fault — Third: the float sticks raised, or the sensor that reports the level fails, so the control never sees water.
- Supply line kinked or frozen — Fourth: a crushed or frozen supply line.
Check in this order
- Open the supply valve fully — Turn it counter-clockwise until it stops.
- Check pressure at the sink — Weak flow there points at the house supply.
- Listen for the fill — A hiss at the start means water is arriving.
- Check the float moves freely — It sits in the front of the tub and should lift and drop easily.
Clearing the code, then checking
- Open the supply — Turn the supply valve under the sink fully counter-clockwise.
Tools: flashlightAbout 1 min
- Check the float — Lift the float in the front of the tub and let it drop; clean around it if it sticks.
About 2 min
- Reset — Switch off the breaker or unplug the dishwasher for a minute, then restore power.
About 2 min
- STOP before disconnecting the water line — The connection at the inlet valve sits under the dishwasher next to wiring; leave it to a technician or plumber.
Safety for this dishwasher
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. The heating element in the tub floor stays hot after a cycle, and so can the water in the sump, so let both cool first.
When to call a technician
Call when the supply is open, pressure is normal and the code still returns, or when you hear water arriving but the code appears anyway. A technician tests the inlet valve, its screen and the level sensing from behind the toe panel with the power and water off.
Other Amana dishwasher codes close to this one
Which models this reading covers
Generalized information for Amana dishwashers with an electronic control that reports codes in this form. It is not a reading for Amana dishwashers with dial-only controls, which flash lights rather than codes, or sister brands on the same platform, whose lists can read differently. The details that change inside the line, such as wiring colours, part numbers and connector locations, belong on model pages, and none is published for H2O yet.
All Amana dishwasher codes
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