L1
East Oak Temperature Reading Below Range / Sensor Out-of-Range Low

The display shows L1 or 'LO', and the smoker will not reach the set temperature; the temperature reading may be stuck very low.

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Safety Warning

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.

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Possible Causes

RTD sensor partially open, poor sensor connection at the control board, sensor not fully inserted into the cook chamber, control board calibration fault.

How to Fix / Troubleshooting

Safety first: Unplug the smoker before accessing internal wiring.

Steps:

  • Check sensor placement. Verify that the RTD probe is fully inserted into the cook chamber and not pulled back into the insulation or cabinet wall.
  • Inspect and reseat the connector: Remove the rear panel and locate the RTD connector on the main control board. Unplug and replug it to ensure a solid connection.
  • Test sensor resistance: With the sensor disconnected, measure its resistance at room temperature and compare it to specifications. A significantly higher than normal resistance can cause low readings.

Repair: Replace the RTD temperature sensor probe if the resistance is out of spec or intermittent. If a new sensor does not resolve L1/LO, the main control board may require replacement.

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Repair Difficulty

Medium 3/5

Required Part

RTD Temperature Sensor Probe
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