Error code
Viking undercounter unit error code E3
Viking undercounter unit error code E3: the manufacturer publishes this for the evaporator thermistor, sensor B, being out of range. What the code covers, what to check before you book, and why the same token means something else on another Viking machine.
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What we can confirm
Code E3, from the manufacturer's own documentation
A code is only meaningful together with the generation showing it — the same two digits mean different things across generations, and that is the commonest reason a code looked up online leads somewhere wrong. This one is recorded on Designer Series, Professional Custom.
The code
E3
The manufacturer publishes this for the evaporator thermistor, sensor B, being out of range
or call (305) 697-3843
What it narrows down to
Evaporator thermistor
What you are probably seeing
Diagnostic
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What it looks like from the kitchen
The symptom this code usually arrives with
A code names the subsystem; the symptom is what sent you to look at the display in the first place. That page says what it usually turns out to be, cheapest cause first.
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On a two-zone cabinet, which zone matters Wine cellar temperature wrong or swinging
One zone right and the other not, or a temperature that will not sit still. Stability matters more than the number here, and on a dual-zone cabinet the code means something different from what it means anywhere else on this make.
- One zone correct, the other several degrees out
- A temperature that swings through the day
- A display flashing an E-number
On the same generation
What else belongs to the Designer Series
A code belongs to a generation rather than to one cabinet. These are the other codes yours can show, and the models that can show this one — a display often has more than one thing to say, and the model number decides what any of it costs to put right.
Other codes this generation can display
Temperature sensor
Over temperature
Relay error
Control error
Software error
Keyboard, ambient light
LED test error
Keyboard error
Communication error
The same two digits mean different things across generations. Search the full code list
In more detail
About Viking undercounter unit error code E3
What Viking publishes for it
On a Viking undercounter unit, the manufacturer publishes this for the evaporator thermistor, sensor B, being out of range. That sentence is Viking's own, read out of the code table in its Use and Care manual for this equipment rather than worked out from the outside. Everything below it — what the condition covers and what is worth doing first — is ours, written from what this equipment does in Miami kitchens.
Which alphabet this belongs to
The undercounter units run a microprocessor that watches the compressor current and both thermistors, and flashes an E-number at you when one of them leaves its range. Four numbers cover the whole family, and on a two-zone wine cellar two of them mean something different from what they mean on a single-zone drawer.
What it covers
What a published cause names is a circuit rather than a component, which is the single most useful thing to know before anybody orders a part. This one covers:
- The thermistor on the evaporator, open or shorted
- Its wiring back to the control
- On a two-zone wine cellar this number is published against the upper compartment sensor instead
Worth trying yourself, in this order
- Clear it once — hold SET and press ON/OFF four times — and see whether it returns
Then what
A sensor reading out of range is one of the more honest things an appliance can say: it names a circuit rather than a symptom. The part is usually inexpensive; the labor is in reaching it. Have the model number ready when you call, because on this make the same sensor sits in three different places depending on the series.
Viking publishes this one for the undercounter refrigerators, refrigerated drawers and wine cellars — that is built-in refrigeration and wine cellars on this site. The full Viking archive has the other conditions, searchable, and it is worth knowing that the same token can mean two different things on two different Viking machines, so the group above is part of the answer. We repair this equipment across Miami-Dade, Broward and Palm Beach.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards