Viking Beverage Center Ice Maker LED 4 Blinks: Potentiometer Signal Is Out of Range

What Diagnostic LED: 4 blinks means

On Viking undercounter beverage centers with an ice maker, such as the VURI1401D and DFRI1401D, four blinks on the LED behind the grille mean the control potentiometer is out of range. The potentiometer is the temperature dial's input to the control. When it reads out of range, the control cannot tell the setting you chose. You may notice the unit cooling to a temperature that does not match the dial.

Common causes of Diagnostic LED: 4 blinks

Temperature control potentiometer out of range
Dial loose or worn
Wiring to the control loose

✓ One safe check you can try

1. Turn the temperature dial through its range and back to the middle. 2. Unplug the unit for a minute and plug it in. 3. Make sure the dial is not stuck. 4. Keep the door closed. 5. If four blinks persist, call us.

! Why to stop there

The potentiometer is part of the control assembly
Wiring checks need a meter
The wrong part guess costs more

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 Ice Machine codes

4 FlashesViking Undercounter Ice Machine Code 4 Flashes: bin and evaporator sensors both reported Check Water light (flashing blue)Viking Ice Machine Check Water Light Flashing Blue: No Water Supply CL (alternating with ICE)Viking Clear-Ice Machine Display CL and ICE: Time for a Cleaning Diagnostic LED: 2+3 blinksViking Beverage Center Ice Maker LED 2 Blinks, Pause, 3 Blinks: Both Thermistors Out of Range Diagnostic LED: 2 blinksViking Beverage Center Ice Maker LED 2 Blinks: Defrost Thermistor Reading Is Off Diagnostic LED: 3 blinksViking Beverage Center Ice Maker LED 3 Blinks: The Evaporator Thermistor Reads Wrongly Door icon (Door Alert Notification)Viking Clear-Ice Machine Door Icon: Door Open Over 30 Minutes dSp IcEViking Built-In Freezer Display dSp IcE: Ice Maker Needs Reset

Diagnostic LED: 4 blinksDiagnostic LED: 4 blinks questions

What is a potentiometer?

It is the part that turns the dial position into a signal for the control. If it reads out of range, the control cannot read your setting.

Could a stiff dial cause it?

Possibly. Turning the dial through its range sometimes clears a poor contact. If not, it needs a technician. It is not a part we expect you to open or adjust, so the dial is the only thing you touch.

Do you replace it?

Yes, if the test shows it is bad. We quote the price first and cover the repair for 30 days. We explain the finding before we start work.