Duke SENS

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. The keypad display gives this indication to alert the operator to a problem in the heater circuit's temperature sensing, so the control can no longer regulate the shelf reliably.

Symptoms

• The keypad display reads "SENS" during normal operation
• The control can no longer hold a reliable shelf temperature
• Temperature readings may be erratic or absent
• The unit alerts the operator of a heater-circuit failure

Common causes

• A failed or disconnected temperature sensor (RTD)
• A broken or shorted sensor wire or connector
• A fault in the sensing portion of the heater control circuit
• A failed control board input

Diagnostic steps

1. 01

   Discontinue operation

   The manual directs that when "SENS" is displayed you should discontinue operation of the affected unit.

2. 02

   Confirm the displayed fault

   Verify the keypad reads "SENS" and note which unit or well is affected.

3. 03

   Check basic power supply

   Per the troubleshooting section, ensure the unit is plugged in and check all switches and circuit breakers in case the fault clears.

4. 04

   Note findings for service

   Use the Temperature Check Procedure if possible and record what the display shows before calling for service.

5. 05

   Contact a qualified service technician

   There are no user-serviceable parts; a qualified technician must correct the sensor fault. Call your Duke authorized service agent or 1-800-735-3853.

When to call a professional

Call a qualified service technician whenever "SENS" appears. Duke's manual explicitly instructs operators to discontinue operation and contact a qualified service technician on this fault, and states there are no user-serviceable parts on the Product Holding Cabinet. A sensor fault means the control can no longer read shelf temperature accurately, so the unit should not be relied on to hold food safely until a Duke authorized service agent repairs it; call 1-800-735-3853.