

Viking dishwasher
showing 3-1
Viking's UI-MC communication error: the user interface on the door and the motor control are not talking.
Mon–Sat, 8am–8pm
- Communication
- Controls and sensors
- Source: Viking
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What 3-1
actually means.
Viking's UI-MC communication error: the user interface on the door and the motor control are not talking.
Viking dishwasher display · also shown as Pots/Pans 3 flashes, Normal Wash 1 flash
What to do when 3-1 shows on the dishwasherKind of codeCommunication
The control board and the user panel on the door stopped talking to each other. The ribbon cable through the door hinge is checked before either board.
Usually leads toControls and sensors
Dead panels, stuck cycles and blinking lights, separated into board, keypad, sensor and wiring before a part is ordered.
Shows up asDishwasher Control Panel Not Responding
Buttons do nothing, only some keys work, or the display stays dark or frozen.
MakeViking
Built-in dishwashers designed to complete a professional-style Viking kitchen.
SourceViking 451 Series built-in dishwashers use & care manual: troubleshooting code table
The 3-1 pattern is in the tables for Viking 451, 324 and later 450 Series built-in dishwashers.
Before you book,
in this order.
Each step comes from Viking's own guidance for 3-1 on its dishwashers. Follow it to the end: the last card says whether this is a visit.
Hold Start for 4 seconds to reset.
Run a short cycle.
If the 3-1 pattern returns, book a visit.
What not to do
Do not replace the door controls on a guess. The link between the two boards is checked before either one.
What you may
notice with it.
The dishwasher problem 3-1 tends to arrive with. Answer these at the dishwasher before anyone is booked.
All problemsWhere 3-1 usually leads
Controls and sensors.
Read these
before the visit.
Short guides that make the call quicker and the diagnosis cheaper.
All guidesViking
dishwashers.
Built-in dishwashers designed to complete a professional-style Viking kitchen.
Viking dishwasher repairIn Viking's own words
UI-MC Comm Error Reset Unit and try again. If problem persists, contact service.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. The 3-1 pattern is in the tables for Viking 451, 324 and later 450 Series built-in dishwashers.
Viking 3-1 dishwasher repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about 3-1.
Can I clear 3-1 myself?
Should I replace the door controls on my Viking for 3-1?
What does the 3-1 pattern mean on a Viking?
Back to your everyday
Still showing 3-1?
Book with the characters exactly as shown, the full model number, and whether any water is on the floor — for a code, that is where the diagnosis begins.