Viking Beverage Center Ice Maker LED 3 Blinks: The Evaporator Thermistor Reads Wrongly

What Diagnostic LED: 3 blinks means

On Viking undercounter beverage centers with an ice maker, for example the VURI1401D, VURI1401T and DURI140D, three blinks on the diagnostic LED behind the grille mean the evaporator normal-cycling thermistor is out of range. The control uses that reading to cycle cooling, so the unit may run too long or stop too early. You may also notice ice production or cooling behaving oddly.

Common causes of Diagnostic LED: 3 blinks

Evaporator thermistor out of range
Connector loose
Control input problem

✓ One safe check you can try

1. Confirm the unit has power and the set temperature is normal. 2. Unplug it for a minute and plug it back in. 3. Keep the door closed. 4. Check that vents are clear. 5. If it still misbehaves, call us.

! Why to stop there

The thermistor sits inside the cooling section
A meter reading separates sensor from control
Poor cycling wastes energy

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

2 FlashesViking Undercounter Ice Machine Code 2 Flashes: bin sensor open or shorted 3 FlashesViking Undercounter Ice Machine Code 3 Flashes: evaporator sensor open or shorted 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: 4 blinksViking Beverage Center Ice Maker LED 4 Blinks: Potentiometer Signal Is Out of Range

Diagnostic LED: 3 blinksDiagnostic LED: 3 blinks questions

How do I see the blinks?

The LED sits behind the grille. We usually read it during a visit, but you can note the pattern if you can see it. Tell us what you saw.

How does 3 differ from 2 blinks?

Two blinks means the defrost thermistor. Three blinks means the evaporator normal-cycling thermistor. Three blinks can be mistaken for two, so count a few cycles and tell us what you see.

What will the repair involve?

We test the thermistor and replace it if needed. You get the price in writing first, and the work has a 30-day warranty. That visit also lets us check airflow and the door seal, which affect cycling.