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Selector knob rotates without engaging the switch stem — typically caused by a cracked or stripped D-shaft insert inside the knob. Replacing the knob restores positive engagement.
Physical damage from impact or wear causes the knob body or pointer to break, making it impossible to accurately select cycles. A new knob restores full control panel function.
Appliance starts a different cycle than the one indicated on the panel, caused by a knob that has slipped its calibrated position on the D-shaft. Replacing the knob resets proper alignment.
Knob feels loose or drifts from the selected setting because the internal shaft clip spring is worn or broken. The replacement knob ships with a new metal shaft clip for a secure, positive click.
💡 Pro Tip: Is Your Selector Knob the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Knob spins freely without engaging the switch — the D-shaft insert is stripped or broken
⚠️ Knob is visibly cracked, chipped, or the pointer indicator has snapped off
⚠️ Cycle selection is inconsistent — machine starts a different cycle than selected
⚠️ Knob feels loose or wobbles on the shaft and won't hold a set position
🛠 Quick test: With the appliance unplugged, remove the knob and inspect the D-shaped shaft on the switch. If the shaft is intact and the knob interior is cracked or rounded out, the knob alone is the issue. If the shaft itself is cracked, you'll need to replace the selector switch (PS1146154 for the start switch). Always unplug the appliance before any inspection.
📦 What's in the Box
✅ 1× Selector Knob 134844410 (light grey, glossy, 1-1/2"L × 3/4"W × 1-11/16"H, D-shaft fit)
✅ 1× Metal shaft spring clip (pre-installed inside knob)
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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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