This article is designed for users of GE/Osram Lightify, Tuya-based smart home systems, or access control systems where "Optima" and "Supervisor Key" errors are prevalent.
If the error is accompanied by "Err 6," it often indicates the system cannot "supervise" the load cell signal due to a connection failure. optima key supervisor error
If the light on the USB dongle is off or blinking red, try moving it to a different port. This article is designed for users of GE/Osram
Surprisingly effective. Disconnect power from the Optima controller for 60 seconds, then reboot. Sometimes the error is transient—a stuck logic state in the key buffer. Step 1: Power Cycle the Controller Surprisingly effective
Standard Entry: With the scale on, press and hold the [HOLD] and [PRINT] keys simultaneously for about 2 seconds until the display shows C01.
To avoid frequent interruptions, it is recommended to review your User Permission Tiers. If the error appears for routine tasks, a manager may need to adjust the Optima Administrator Manual settings to lower the security threshold for trusted employees. Balancer Diagnostic Codes - Snap-on Equipment