Brian H

If it is a SwitchLinc dual band switch. Dimmer or Relay type. The RF receiver antenna is on the back side of the switch and possibly not reliably reaching the problem switch. Especially if the antennas are not aligned to each other.

The early production ISY-994i had a different label setup and did not cover any of the case mounting screws. I don't remember seeing any information indicating it was now covered. Glad you found it.

The TTL signals are +5 volt logic. Not buffered, can be damage if connected incorrectly and possibly stop the normally used RS232 signals from working correctly. The TTL signals are not in the older 2412S PLM and it included the same cable in the box.. That cable was used with many of the even older devices. Smarthome liked to keep using the same cable and basic pin outs. You should be fine with the cable in the box. Just ignore the TTL signals as not needed.

One more tip that may help. On the X10 forums. Jeff from JV Digital Engineering. Found a cheap Chinese cell phone charger. That emitted all kinds of noise to the power lines. On the exact 120KHz X10 power line signal frequency.

That was the way mine was. Paddle assembly removed. Tape over the tact switches access holes in the top cover. What looked like a wooden stick was included so you could push on the set switch. The mounting tabs may have been removed but not too sure on that

If the modules did not have an X10 code programmed into them. It may not be the problem. The later revision modules did not officially have an X10 capability. Though some still did. That would be only one House Code and I see more than one House Code in your posted log entries. I don't know if a factory reset and reloading would do anything. Is it possible to disable a module with the Air Gap switch if it is a Switchlinc and see if anything changes or unplug a module and see if anything changes. If you have a module that can be set to flash its LED on power line traffic. You may see it flashing when normally nothing is being controlled. Do you know if anything is only running at those hours? Like some things are only run at night if their is a different power charges depending on time of day. You didn't have a new Smart Electric Meter installed recently. Long shot as I know of one particular protocol that caused X10 strangeness. Most where just fine. Sorry about the 1111 references. That would be all 1 bits in the X10 messages. I was thinking of power line noise looking like that

Can they live in an Insteon module. Maybe if they are the real early ones that also could have an X10 Primary address added to them. Though I doubt it in this case. As the House Codes look random and not one programmed into a early module. Anything new electronically or moved in the home? Maybe some kind of electrical noise on the power lines being see as X10 messages. House code J is a 1111 and Status Request is a 1111.

Glad you are working again. I was not clear. About was the choice not a choice selection itself.

In the Help Tab, About choice. Will give you what your ISY994i has in it. The Pro should have a choice tab. To disable automatic module updates so you can do changes one at a time.

Can't say for sure but it should be the same. Their EZICOMM module. Was a 2412 or 2413 base mother board with their custom interface board. The module was also sold to be used in place of a Smarthome Serial Port PLM.

The adapter cable shipped with a 2412S and 2413S PLM. RJ45 to DB9S. RJ45-1 to DB9S-2, RJ45-7 to DB9S-5 and RJ45-8 to DB9S-3. That would be the signals originating on the PLM.

You have to be careful with the 2413S PLM RJ45 type serial port jack and using POE on normally spare wires. Pin 3 and pin 6 are TTL level in and out connections. On the 2412S PLM pin 2 is unregulated +12 volts. I believe the ISY994i could be powered by that power and the ISY99i could for sure.

The serial speed of a 2413S is 19,200 Baud, No Parity, 8 Bits and 1 Stop Bit. I too have seen reports of longer distances. With good quality cable.

Memory here. I believe for a time they had 5.5mm barrel and 2.5mm pin. All of mine are the 5.5mm barrel and 2.1mm pin. If you took one from another ISY994i and it was one of the ones with the 2.5mm pin. Using it on a 2.1mm pin would be sloppy and maybe exhibit what you are experiencing.

There was a time period where the connector was a different pin size. They do make an adapter. 2.5mm to 2.1mm and a 2.1 to 2.5mm pin. Depending om which way you have to go. If it is loose My thoughts are the supply has a 2.5mm center pin socket and the ISY994i has a 2.1MM pin.

The ISY994i has a wide range of voltages it can accept, 5 to 30 volts.. My ISY99i was 5V .5A. I have two ISY994i. One was 5 volts .5A and the other was 5V 1A. UDI sells a replacement it is 12 V 1A last time I looked. Others have also had there supplies go bad. Two of mine did.

Glad you had no issues. Others have until a Factory Reset was done.

This is the start of adding a 2856D2 V4.3 ID# 16.81.F0 The line showing the module responded back. [ INST-SRX ] Is what I don't see in your LOG. Tue 12/14/2021 06:59:31 AM : [16 81 E0 ] Added to list of devices to link to ISY Tue 12/14/2021 06:59:31 AM : [INST-TX-I1 ] 02 62 16 81 E0 0F 0D 00 Tue 12/14/2021 06:59:31 AM : [INST-ACK ] 02 62 16.81.E0 0F 0D 00 06 (00) Tue 12/14/2021 06:59:31 AM : [INST-SRX ] 02 50 16.81.E0 44.30.76 2F 0D 01 (01) Tue 12/14/2021 06:59:31 AM : [Std-Direct Ack] 16.81.E0-->ISY/PLM Group=0, Max Hops=3, Hops Left=3 Tue 12/14/2021 06:59:31 AM : [INST-TX-I1 ] 02 62 16 81 E0 0F 10 00 Tue 12/14/2021 06:59:31 AM : [INST-ACK ] 02 62 16.81.E0 0F 10 00 06 ID-REQ (00) Tue 12/14/2021 06:59:31 AM : [INST-SRX ] 02 50 16.81.E0 44.30.76 2F 10 00 ID-REQ (00) Tue 12/14/2021 06:59:31 AM : [Std-Direct Ack] 16.81.E0-->ISY/PLM Group=0, Max Hops=3, Hops Left=3 Tue 12/14/2021 06:59:32 AM : [INST-SRX ] 02 50 16.81.E0 01.07.38 8F 01 00 (00) Tue 12/14/2021 06:59:32 AM : [Std-Broadcast] 16.81.E0-->01.07.38, Max Hops=3, Hops Left=3 Tue 12/14/2021 06:59:32 AM : [16 81 E0 0 ] Calibrating engine version Tue 12/14/2021 06:59:32 AM : [16 81 E0 0 ] May not fully support i2, reverting to i1 Tue 12/14/2021 06:59:32 AM : [16 81 E0 0 ] Using Database Link Table offset 0x0FF8 (reported 0x0000) Tue 12/14/2021 06:59:32 AM : [16 81 E0 1 ] Start : Adding device to ISY Tue 12/14/2021 06:59:32 AM : [16 81 E0 1 ] Finish : Adding device to ISY was Successful

The module is not responding back to the ISY994i. As there are no received message back showing in the log. Double check you have the right six digit Insteon ID when you are trying to add it. Some digits are easy to read incorrectly. Like 0 and D are one we see. The 2456D is the older power line only type module. You may want to try adding it on a different outlet or maybe even the same branch circuit as the PLM. If it works there. You may have a signal coupling issue if it is on the other phase of the incoming power or power line noise, signal sucker issue. Do you have any Dual Band modules to couple the two phases?

Are you putting the +5 volts DC into the Sensor Input? It has its own internal 5 volt sensing supply signal and is designed to have a dry contact on the sensor input. Though 5 volts probably would not damage it The retail #2822-222 is a 2450 I/OLinc. Sold by retail vendors. Though you may not have much luck finding them either.

It has been reported. You can take the serial board out of the old 2413S and put it into the 2413U. Converting it from USB to Serial.

This page from the UDI WIKI may start to give you some information. https://wiki.universal-devices.com/index.php?title=ISY-99i/ISY-26_INSTEON:Errors_And_Error_Messages

The 2414U and 2414S are the old PowerLinc V2 PC controller. It is a completely different interface. That had memory we could download assembled programs to and run alone. Also had a real Time Clock in it. Different communications protocol than a 2412S/U or 2413S/U PLM. I can't say for sure but it probably is not supported.

You can use the built in communications test [4 tap test] to check communications. Depending on a V1 with white LED or V2 with a red/green LED. You will get a LED flash pattern to indicate communicating and on same or opposite phase. The users manual gives the flash patterns for both versions and how a mixture of versions flash. 2443V2.pdf

The 2443 Access Points where discontinued and the presently sold 2992-222 Range Extender is now what is used for communications coupling. If needed since Dual Band Devices have made the need for them mostly unneeded. It is a 2475D2 Lamplinc with the dimmer parts removed. Most used a full Dual Band device as they also could be used for load control.