Based on an experience with a Tac32 late last year that had the same 1068 fault, where one of the hoistway dynamic sensors failed, I went ahead and replaced the dynamic sensor modules in the heat - no improvement.

The Tac32 from last year did have an extra fault that mentioned an actual failure of the Dynamic Sensors, where this Tac20 does not show that fault. I conjectured that maybe the Tac20 doesn’t show that level of detail, because it also doesn’t have a WJR command that I can “see for details” that the Tac32 manual mentions.

New Dynamic Sensors made no improvement, call returned the next day.

Here I just have a 1068 “dual post jack resynch racking error” and the 1122 “selector Node B CAN com is offline.”

Note that this job has a long history of displaying that 1122 as just part of a list of errors noted down over time, and that fault did not apparently cause shutdowns. The 1068 is the new kid on the block.

I have noticed that when the job does its scheduled resynch, it does a double resynch, not just the single that happens when I do a “force jack resynch” command.

Jacks have new seals, etc. in the last year, no leakage, and within 1/2 inch of synch.

Any thoughts?

Thanks!!

2nd generation elevator man.