Napoleon Temperature Sensor Calibration Error

Display works but temperature reading is obviously wrong (e.g., 500°F at room temperature)

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

RTD probe shorted to grill body, Damaged RTD insulation, Control board ADC failure, Incorrect replacement probe installed

Safety first: Turn OFF and unplug the grill before testing wiring.

Steps:

Inspect probe wiring: Ensure the RTD leads are not pinched or contacting bare metal along their path.
Check resistance: At room temperature, measure RTD resistance and compare to Napoleon specifications. A very low reading suggests a short.
Verify part number: Confirm that any replacement RTD is the correct Napoleon part for your model.
Board check: If a known-good probe still reads incorrectly, the control board may be defective and require replacement.

Medium 3/5

RTD Temperature Probe

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