What does Duke HI mean?

On a Duke Product Holding Cabinet, the keypad shows "HI" when the control detects an over-temperature fault: the shelf temperature has stayed higher than the factory preset for about thirty minutes. This happens when power is not removed from the heating element after the shelf reaches its preset.

What does Duke LO mean?

On a Duke Product Holding Cabinet, the keypad shows "LO" when the control detects an under-temperature fault: the shelf temperature has stayed lower than the factory preset for more than thirty minutes continuously.

What does Duke SENS mean?

On a Duke Product Holding Cabinet, the keypad shows "SENS" when a sensor fault is detected at any time during normal operation. The manual instructs the operator to discontinue operation and contact a qualified service technician.

Does AskWhiz cover Duke equipment?

Yes. AskWhiz is trained on official Duke service and operator documentation, so it can answer fault-code, error-message, and repair questions for Duke commercial kitchen equipment directly in WhatsApp.

How do I troubleshoot Duke error codes?

Send AskWhiz your Duke model number and the error code or symptom on WhatsApp. It searches the official Duke manuals and returns the likely cause and the documented fix, step by step, so you stop scrolling through PDFs in the field.

Is AskWhiz a substitute for the Duke service manual?

No. AskWhiz reads the official Duke documentation and surfaces the relevant procedure fast, but always follow the manufacturer safety warnings and call a qualified Duke technician for work that requires one.

Commercial Kitchen

Duke error codes, decoded.

Look up any Duke fault code below. Each one is grounded in Duke's own service documentation — the meaning, the symptoms, the causes, and the steps to clear it.

By Nichita Herput

Co-founder & CEO · Reviewed May 2026

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Duke sits in our Commercial Kitchen coverage. Every page here is transcribed from the manufacturer's manuals, not scraped from forums.

What error codes does Duke display?

Tap a code for the full breakdown — meaning, symptoms, causes, and fix steps.

Over-temperature fault — the control senses the shelf is above its factory preset temperature

Under-temperature fault — the control senses the shelf is below its factory preset temperature

SENS

Sensor fault — the keypad displays SENS during normal operation, indicating a temperature sensor problem

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Common questions about Duke equipment

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