JennAir Dishwasher Code H2O: Not detecting water

What H2O means

On JennAir dishwashers such as the JDTSS247HS or JDB9200CWX, H2O (with the letter O) means the dishwasher is not detecting water. Some displays show the same message as F8E1, or as a Clean light that flashes eight times, pauses, then once. The usual cause is a closed water supply or a kinked supply hose. Once water is restored, press Start and the cycle resumes.

Common causes of H2O

Water supply tap closed
Water supply hose kinked
Fill valve or inlet not delivering water

✓ One safe check you can try

1. Make sure the shutoff valve under the sink is fully open. 2. Look at the supply hose for kinks without pulling the dishwasher out. 3. Run the kitchen tap to check that water is available. 4. Press Start. The dishwasher tries to fill and resume the cycle. If H2O or F8E1 appears again, call us.

! Why to stop there

Pulling out a built-in unit can strain the hoses.
If water reaches the valve and still no fill happens, the valve or sensing needs testing.
Running dry cycles wastes detergent.
We test the fill path and quote in writing first.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Dishwasher codes

F8E4JennAir Dishwasher Code F8E4: Check for water and leaks after installation F8E5JennAir Dishwasher Code F8E5: Fill valve stuck open F9E1JennAir Dishwasher Code F9E1: Long drain time F9E2JennAir Dishwasher Code F9E2: Drain motor error FAE4 or F10E4JennAir Dishwasher Code FAE4 or F10E4: Diverter valve error FAE5 or F10E5JennAir Dishwasher Code FAE5 or F10E5: Diverter leak Sanitize Light FlashingJennAir Dishwasher Message "Sanitize Light Flashing": Sanitize Temperature Not Met E:30JennAir Flush Mount Code E:30: internal error from overvoltage

H2OH2O questions

Is H2O spelled with a zero?

No, it is the letter O, like the chemical formula for water. You may also see it as F8E1 or as a light pattern on the Clean indicator.

Will the cycle continue by itself?

Yes. After you restore the water supply and press Start, the dishwasher tries to fill and resume the cycle on its own. Check the tap and hose first, since those are the usual causes.

What if the tap is open?

Then the fill valve or the sensing may be the cause. Book a visit, and we will quote in writing and warranty the repair for 30 days.