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Hot/cold spots or non-blue flames

Hot/cold spots or flames not burning blue — Uneven heating or improper combustion

Weber · Spirit Grills

What does Hot/cold spots or non-blue flames mean?

Inconsistent temperatures across the cooking surface or flames that are not burning blue indicate that the burner tubes require a thorough cleaning to restore proper performance.

Common Causes

  • Blocked or dirty burner tubes
  • Obstructed spider/insect screens

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a thorough cleaning of the burner tubes, including burner tube ports and spider/insect screens.

  2. 2

    Ensure the grill is cool and off before cleaning.

  3. 3

    After cleaning, check the flame pattern again to ensure proper blue flames and even heat distribution.

Browse all codes in this manual (18)
Verified technical data. Last updated: April 2026

Related Faults

Bubbles in soap solution (gas leak)Bubbles forming during leak check — Gas leak detectedBurner 1 fails to igniteBurner 1 fails to ignite within 5 seconds — Ignition failureBurners do not ignite (general)Burners do not ignite — Grill fails to light
Source: Weber Spirit Grills
Open Manual (Page 21)Search more codes in this manual