In a (now closed) thread called "Unknown Address," the OP is referred to the page

https://wiki.universal-devices.com/ISY-99i/ISY-26_INSTEON:Adding_a_Device#Adding_by_Linking_Method

for the proper procedure to add a device whose address label is unreadable or obscured. Unfortunately, this page provides conflicting information.

The text says to choose one of the three linking options, then press the set button on the device for 10 seconds until the load blinks, then return and click Finish.

The image (and the instructions you actually get from the Admin Console) says to press the set button for 3-5 seconds first, then return and choose one of the three linking options, then click Finish.

One or the other of these ought to be corrected. Which one is correct?

 

You want to be in linking mode first, so that the PLM/ISY catches the Insteon traffic from the device(s) being put into linking mode.

I've actually done that by starting linking in the admin console, then pressing the button on the device. So both methods probably work.

Last night I tried the admin console's own instructions first, and they failed entirely.

Then I tried the instructions with the 10-second push. I was a bit disturbed when the switch's load didn't cycle, but when I returned to the console there was a window saying it had seen that device raise its hand and would configure it as soon as I clicked Finish. It completed successfully.

If I can remember how, I should lodge a bug against the faulty instructions in the console itself.

Thanks for the help.