Error code · Dishwasher

Monogram ZDT/ZDP Dishwasher: Sanitized Indicator Dark After Cycle

Low risk · DIY check OK

Code: Sanitized Light Not Lit at End of Cycle
Appliance: Dishwasher
Brand: Monogram
Warranty: 30-day workmanship

What Sanitized Light Not Lit at End of Cycle means

On Monogram ZDT and ZDP touch-control dishwashers, such as the ZDT985SPNSS and ZDT800SPFSS, the Sanitized light should come on at the end of a sanitizing cycle. If it stays dark, either the door was opened and the cycle was interrupted during the final rinse, or the incoming water temperature was too low. The dishes are clean, but the sanitizing step was not confirmed. You will see the cycle end without that light.

Common causes of Sanitized Light Not Lit at End of Cycle

Door opened during the final rinse
Incoming hot water too cool
Water heater set below the needed range
Hot water line slow to reach the dishwasher

✓ One safe check you can try

1. Do not open the door while the dishwasher is washing. 2. Set the water heater between 120 and 150 degrees F. 3. Run hot water at the kitchen sink before starting so the line is warm. 4. Run the sanitizing cycle again and watch the light at the end.

! Why to stop there

If the light stays dark with correct water heat and a closed door, we check the heating and temperature circuit.
We confirm the actual water temperature entering the dishwasher rather than relying on the heater setting.
We give a written price before work, and our repairs carry a 30-day workmanship warranty.

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.

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Sanitized Light Not Lit at End of CycleSanitized Light Not Lit at End of Cycle questions

Why is my Sanitized light off at the end of the cycle?

Either the door was opened during the final rinse or the incoming water was too cool. Either one keeps the dishwasher from confirming the sanitizing step.

What water temperature should I use?

Set the water heater between 120 and 150 degrees F, and avoid opening the door while it washes.

When does it need service?

If the light stays off with hot water and a closed door, we test the heat circuit and quote the price in writing.

Book a visit

Still unsure about Sanitized Light Not Lit at End of Cycle?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 955-0955