Napoleon Temperature Control Instability

The grill temperature overshoots the setpoint by more than 50°F and fluctuates widely.

Advertisements

Possible Causes

An RTD probe coated with grease or soot, an RTD probe loose in its mounting, excessive wind entering the cook chamber, or a control board PID tuning issue.

How to Fix / Troubleshooting

Safety First: Use heat-resistant gloves when working inside a hot grill.

Steps:

  • Clean RTD Probe: Gently wipe the probe with a non-abrasive pad to remove grease and soot. Do not bend the probe.
  • Check Mounting: Ensure the probe is firmly attached to the cook chamber wall and not moving.
  • Wind Management: Position the grill so the exhaust is downwind and shield the unit from strong crosswinds.
  • Lid Discipline: Avoid frequent lid opening, which can cause large temperature swings.

If instability persists, the control board may require a firmware update or replacement.

Advertisements

Repair Difficulty

Easy 2/5

Required Part

RTD Temperature Probe
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements