For the "screw-fixed" versions, the hardware may become loose over time due to the weight of the furniture.
The bulletin mandates a new grounding topology: all V20 reference shields must terminate at a single star ground point, isolated from the motor power ground. A step-by-step wiring diagram is now included with every retrofit kit. hksva028v20 fixed
: Disconnecting the system via the main breaker for 5–10 minutes to clear temporary logic errors. For the "screw-fixed" versions, the hardware may become
✅ Fixed / Resolved Component: HVAC System Controller (Ventilation Unit 20) Severity: Medium (Warning) : Disconnecting the system via the main breaker
: A specific software bug or security vulnerability (e.g., a "CVE" or "KB" update) that was patched. A Product/Model Number
After investigating the persistent issues surrounding the build/error, we have successfully implemented a fix. This resolution addresses the instability reported by users over the last few weeks. 1. Nature of the Issue The hksva028v20 error typically manifested as: