The FAST WASH light flashes because the motor runs while no water comes in. Check the supply valve first.
Model compatibility: Monogram reuses codes across series and model years, so Flashing FAST WASH light may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
A flashing FAST WASH light means the motor starts but water does not enter the dishwasher; the guide's cause is a water supply valve that is turned off.
The motor is running, yet the tub stays dry and the FAST WASH light flashes. In the use and care guide’s Problem Solver the symptom reads: motor starts but water doesn’t enter the dishwasher.
Cause and remedy in the guide
Possible cause: the water supply valve is turned off.
What to do: check the water supply valve.
Applies to
The Monogram ZBD5700 and ZBD5900, which are older (legacy) dishwashers. The entry carries a note that it is for those two models.
A valve that is open and a light that still flashes is a reason to call (844) 415-4997. We repair Monogram dishwashers in Los Angeles; tell us your model and what you checked at the supply valve. See the dishwasher repair page.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Monogram appliance?
Book a specialist visit for a clear estimate and approval before any repair.
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