Brian H

Glad you got it working. The information may assist someone with similar issues.

I would not remove or insert an SD Card with the powered on ISY994i. Asking for damage and most of the ISY994i firmware is on the SD card.

In the ISY994i. Only a small loader is in the processor on the board. Most of the remaining operating system is on the SD card now formatted but with out needed firmware. The link in the SD card replacement. Gets you access the ISY994i Administrative Console. You then have to use a backup to add the rest of the needed firmware, and others like your stored programs etc.

Did you follow step 3 and start the program to add the firmware to the ISY994i? As the SD card does not have the needed firmware in it to be successfully started normally. Then you pick the backup you want to use in it. The telnet format was supposed to get you a slightly better performance. I too had it look like it didn't give the last expected ending but seem ed to work fine.

Good information. It does have a rely and bypasses the dimmer section.

I would do an eisy or eisyR2. The Polisy is no longer sold and I recently received a UDI update email. The Polisy is now in the Maintenance phase.

Possibly age may make a difference. If the 2423S is an earlier revision than the 2413U. Though recent revisions seem to have the problems resolved.

I don't think an All Insteon Command can be directly sent. Like TJF1960. I created a scene with every device in the system.

No I have not seen any schematics except the 2412 and 2413 PLM On the revision you are showing. The 30V Zener is under the horizontally mounted 470uzf cap. I had one of the diodes short killing the whole thing. One thing I did find out. Both revisions have the +5VDC logic supply. Directly connected to the Line hot AC input and regulation is on the - supplies side.

That photo is for the later revision units. With the 24VDC relay. The earlier versions in the schematic had a 120VAC relay and a real small solid sate device to put a120VAC signal on the relay. Also had the two small bypass caps in series as a snubber. Across the relay contacts. They eventually shorted and the load tried to go through them. Magic smoke. Your model has a better snubber network in it.

The i3 that can be set to dim or on off. Probably has a triac output and even at 100% on may or may not not work well with LED loads. We picked certain brand LED bulbs as some would flicker.

The module is purchased from UDI and then they add it and it then shows up on the ISY994i. I don't think you can get it elsewhere. Since support from UDI was discontinued It may not be possible but I hope you find a way.

If the new controller has other features like a clock and has only two wires back to the main unit. It probably has more then power on the two wire. The I/OLinc would short the messages back to the main unit. Another clue would be the clock in the wall mounted interface would reset to 12:00 every time the I/OLinc was triggered. I hove seen similar fixes. Where the I/OLinc was connected to a registered remotes internal push button pads. At one time the vendor made an interface module that took the simple dry contact pulse from an I/OLinc to control the new openers.

Sounds like the Insteon 2477SA1 normally open or 2477SA2 normally closed 220V AC module. 2477saqs_071612.pdf

BusyRat gave us PLM test program but you had to know the low level commands and saw how it responded. I believe it was serial port only and in Windows. Developers also got some test programs through DockLight. Using the free downloadable evaluation version. I rewrote a few of the test programs to do what I wanted. Secret was their ptp programs could be rewritten with a plain text editor. If you knew what lines to change. As one of the limits of the free version was you could not save the changes. I did use it modified to do USB PLM units. So technically yes you could test them but it was not easily done by most. I would think the PLC modules are best in the electronic recycle bin.