Viking Wine Cellar Code E4: Lower Sensor B on Dual-Zone Models

What E4 means

On Viking Professional and Designer undercounter wine cellars with TruProtect control, such as the VUWC2441 and DFUW2441C, E4 on a dual-zone cellar means the lower compartment sensor B is out of range. The control uses that sensor to hold the lower zone at your setting. On single-zone cellars, E4 instead refers to the display thermistor, called sensor A, so the cellar type decides the meaning.

Common causes of E4

Lower compartment sensor B out of range
Sensor connector loose
Control board input reading wrongly

✓ One safe check you can try

1. Check the lower zone with a thermometer. 2. Unplug the cellar for a minute and plug it back in. 3. Hold SET and press ON four times to clear the code. 4. Keep the door closed so the temperature holds. 5. If E4 returns, call us.

! Why to stop there

The sensor sits inside the cabinet behind the liner
A bad reading lets the lower zone drift unnoticed
The right part depends on single or dual zone

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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Other Wine & Beverage codes

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E4E4 questions

Is E4 the same on every Viking wine cellar?

No. On dual-zone cellars E4 means the lower compartment sensor B. On single-zone cellars it means the display thermistor, sensor A. Tell us your model number when you call.

Will my bottles be harmed?

A short drift does little, but a long one matters for fine wine. Check the lower zone with a thermometer and move the most valuable bottles if it climbs.

What does the repair cost?

We test the sensor, replace it if needed and confirm both zones hold. The price is quoted in writing first and the work carries a 30-day workmanship warranty.