XLT Pizza Oven Error Code Oven Probe: Temperature Probe Out of Range

What does XLT Oven Probe mean?

An XLT conveyor oven holds its bake temperature by reading one probe in the oven cavity and switching the burner to match. The controller treats that reading as believable only inside a window. If the probe circuit looks open, looks shorted, or reports below 40F (4C) or above 700F (371C), the controller cannot trust it and shows Oven Probe as an alarm on the LUI display. On the control board the HEAT LED flashes while the Alarm LED is lit. The manual gives the reading limits and the alarm name, and lists no separate causes. Its remedy is a hard reset followed by a call to XLT at 888-443-2751 if the alarm stays. A temperature reading outside that window usually means the electrical path from the probe has a problem rather than that the oven is truly that cold or hot, though the manual does not say so in words.

Affected models and control systems

XLT conveyor ovens, gas version H (Standard, World, Australia, Korea) with the LUI/OMC controller. The electric version H Parts & Service Manual XD 9007A prints the same table.

Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.

What you may notice

• Oven Probe alarm on the LUI display
• HEAT LED flashing with the Alarm LED on at the controller
• Oven not heating, or heating erratically
• Display temperature that jumps or reads far from the real cavity temperature

Possible causes

Likely causes — what usually sits behind Oven Probe on this control. A technician confirms which one it is before any part is replaced.

• Probe connector loose or corroded where it joins the controller wiring
• Probe lead damaged by heat or abrasion near the oven cavity
• Probe element itself failed open or shorted
• Moisture or grease creeping into the probe connection

Safe checks before calling for service

How a technician diagnoses Oven Probe

1. Read the alarm and the LUI temperature, and note the LED pattern on the controller.
2. Check the probe wiring for damage and for a secure connection at the control board.
3. With the oven cool and power off, measure the probe's resistance and compare it with the oven's probe values.
4. Check whether the reading changes when the probe is warmed in the oven.
5. Replace the probe only if it tests outside range, then confirm a normal reading.

Technical reference

Document

XLT Gas Oven & XLT Hood Parts & Service Manual (XD 9006A)

Edition

01/05/2026

Models / control

XLT conveyor ovens, gas version H (Standard, World, Australia, Korea) with LUI/OMC controller; the electric version H Parts & Service Manual XD 9007A prints the

Section

Oven Troubleshooting, p. 28, LUI Service Error Codes

Checked

October 2026

We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.