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Knob turns but flame does not change between low and high settings — indicates a stripped or cracked D-shaft bore that can no longer rotate the valve stem.
Control knob rotates without resistance and does not stay in a set position, making it impossible to maintain a steady burner flame.
Visible cracks, chips, or broken plastic caused by heat cycling, accidental impact, or normal wear over years of daily use.
Knob does not fit securely on the valve stem and wobbles during use, creating imprecise flame control and a safety concern.
💡 Pro Tip: How to Know If Your Burner Knob Needs Replacing
Your part is likely the culprit if you notice any of the following:
⚠️ Knob spins freely without engaging the valve stem or changing the flame
⚠️ Burner flame does not adjust from low to high as expected when knob is turned
⚠️ Knob is visibly cracked, chipped, or broken — common after heat cycling over time
⚠️ Knob feels loose, wobbly, or does not stay in the selected position
🛠 Diagnostic Tip: Turn the knob slowly from HI to LO and listen/watch for a corresponding flame change. If the flame stays constant or the knob turns without resistance, the D-shaft bore is likely worn or cracked internally — replace the knob before the valve stem is damaged.
📦 What's in the Box
✅ 1× WB03X29300 Surface Burner Control Knob (Stainless Steel Finish, 2 × 1.8 in, D-shaft 0.24 × 0.21 in)
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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