Brian H

I had similar feeling on my ISY26 and then my ISY99i. I definitely agree UDI has exceptional support. I still have some X10 in my setup. My Insteon modules are old enough to also have an optional X10 primary address in them. So my HR12A palm pad can still control them.

Not too sure if this will be what you need. https://developer.isy.io/blog/NVMe/

I have used the loX Finder (start.jnlp) on my ISY994i with the last firmware for it. On a Windows 10 setup. And it works fine. With the Java it has installed.

The 2456S3 has local control sensing and the later Rev 4.0 have a snubber network across the relay. Both will cause flashing or dim glow when off. Putting a small incandescent load or old wall wart. On the string with a outlet tap. May times will correct the issue. The disabling the load sensing does not turn off the sensor voltage. Just the 2456S3 ignores the load changing. So the small current is always there. Even when disabled. The 118 volts is through a high resistance and most meters with a high impedance will see the voltage but the low resistance of the bulb will load it down and the meter will be close to 0 or 0 on the meter. Do they click with no load? Not too often seen but maybe the load is sucking up the power line signals.

I have also see some openers manufactures say they had some brand LED bulbs cause their openers to get very touchy. Not surprised the power supplies caused issue. They also have caused many X10 issues over the years. I saw an X10 tutorial where a cell phone charger. Spewed out noise on the X10 power line frequency. The I/OLinc is also power line only so line issues can effect its operation. Some have added a dual band module on the same circuit. I personalty have an extra 2457D2 Lamplinc just doing dual band functions with no load. I did open a Range Extender and it was a 2457D2 with the dimmer parts removed. I/OLinc also has a switching supply so capacitors can also be considered. I have seen the old Smarthome try different capacitors as the revision levels changed.

I actually saw a condo. Fed from three phase. With each unit using two of the three phase leads and common. To help balance the power line feed. Each unit had 120VAC neutral to each line and 208 line to line. I believe the high voltage appliances where made for 208 or wired for 208. 120 degree phase separation.

2413U Revision 2.6 is recent. Date Code 1223 is December 2023. It should have the latest hardware caps in it.

Your PLM information. Indicates it is fairly old. Also with only two links. I would suspect the PLM is failing. As two links is way to low.

I don't think that it listens when in power saving mode and not woken up to see commands. It may not even have an RF receiver in it.

Sounds correct. The RJ45 serial 2413S PLM end only had three sires connected. From other posts here.

Be careful. The RJ45 network style serial connection on the PLM end only uses three wires. Other pins on the PLM end are not serial like send and receive TTL level signals. That should not be connected to anything.

Another symptom is a dim or out LED on the side. Can be rebuilt built. These days most go the new latest version PLM.

I believe you also had post on the Insteon forum. I posted a link to the manual there. Though you may already have it since you are using on already.

Yes the dual band modules. Do receive the Insteon RF messages and send them back on the power lines. The power line only devices. Have to be reachable by that dual bands power line communications message. The 2856D you can control it is receiving the commands. The ones even in the same scene that do not respond. Are not receiving the commands. It sounds like you have a power line communications problem to the 24856D modules that do not follow the commands. Any new or moved electronic devices that maybe making power line noise or have become a signal sucker? You may try a test and start unplugging other electronics on the circuit the unresponsive 2856D is on. The 2856D is a plug in module. Try moving it to a different circuit and then see if the response changes. If you have any phase coupler to get the two incoming power lines. It may have failed. You may want to hold off on the factory reset and see if anything else. Like a signal sucker, noise maker of failed phase coupler is the issue.

Yes it is old and 26 pages long but you should find information in it. https://forum.universal-devices.com/topic/13866-repair-of-2413s-plm-when-the-power-supply-fails/