La solution de condensateur 47µF entre K et GND est à présent officielle
The "temporary" or "workaround" solution is now made official:
Q: I've already checked the installation, shortened the power wires or changed the wires if needed, but the LED still stays red, what's the problem ?
A: We are aware of an incompatibility problem with a small percentage of drives. The LED stays red even if the install is good, and using another chip doesn't solve the problem. The current work-around to solve the problem is to connect a 47uF capacitor between GND and K point. Our technical team is working on another solution. We apologize for the inconvenience, we'll post more info when available. Thanks to jmlacroix and Frenik for the current fix.
That's it ... it's working !
Many thanks to EVASION, MODA, jmlacroix and Frenik (some of them missing their credits in Wasabi's page).