Tek-CARE120 and Tek-CARE160 Room Controller Startup Issue

LI122UN and PM120 Room Controllers Affected

TekTone has found that a component used in the manufacture of LI122UN and PM120 room controllers between January 1 and February 13, 2024 experienced a significant drift in its tolerance.

This results in a scenario where room controllers equipped with the affected part have difficulty powering on and communicating on the data bus. This will present as a Lamp Fault and/or Peripheral Faults being annunciated for the affected room controllers even when voltage is present on the data bus pair at the room controller.

This issue only occurs upon system startup (after a power cycle or a configuration commit) and does not occur during normal system operation.

If your Tek-CARE120 or Tek-CARE160 system is operating normally, no action is required. 

TekTone has implemented a fix for this issue and all room controllers shipped after February 13, 2024 have been updated with the fix.

If you do experience a startup issue with LI122UN or PM120 room controllers, please contact the TekTone Sales Department for an RMA. TekTone will replace the affected units at no charge.

Regards,

TekTone Technical Support Group