Brian H

I have a few spare PLM modules. As I like to look for obvious changes in the PLM. Along with a spare ISY994i.

Try a power supply. When they fail all kinds of strange things happen. I have had at least one on an ISY26, ISY99i and now a ISY994i. Since you tried more than one PLM. Try a new cable between the PLM and your ISY994i. They have on occasion gotten flaky.

Before Soft Start. On 100% and dim down. After Softstart. Both On 100% and dim down and X10 Extended Dim commands. That was also when the new surface mounted components and different processor where introduced. Smarthome used the On 100% dim down and Preset Dim. Smarthome modules don't respond to X10 Extended dim and X10 don't respond to Smarthome Preset dim. I think Leviton used the Preset dim also. Not sure about the ACT A10 protocol as it is built on X10 commands with added features. Found a file with a small part of one of the PLM developers sheets. DimDif.txt

Depending on if the metal frame of the switch is mounted on a surface that will help remove the generated heat. Incandescent loads also may have a current surge when starting with a cold filament. To consider. Relay type as pointed out would be better if you don't need dimming.

Insteon dual band devices also have a built in communications test you can use. Some manuals call it the 4 tap test, some the beacon test and some have a flow chart to follow to enable the test. The dual band modules and their range extenders [dual band 2477D2 Lamplinc with the dimmer parts left out]. Do not couple or pass on X10 messages. Many of the passive X10 couplers will also couple Insteon power line messages. Some of the active X10 coupler repeaters can see the end of an Insteon power line massage as a bogus X10 message and try and repeat the command. I have a XTB-IIR that knows enough to not false on Insteon. So in my case I have a mixture of X10 and Insteon devices.

Guy is correct. The tact switches on the PCB get intermittent and may even click but not actually make contact. When the paddle mechanically activate the tact switch. There was a repair instructions on how some one did the repair. There was a early production run of the 2476 Switchlinc that we actually gave us an extended warranty [back when Smarthome sold an add on 7 year warranty ] if the switches went bad. I had a few myself.

Thank you for taking thee time do show the reset switch. It is definitely an improvement from the FCC Database internal photos.

On but not off. Does sound like a noisy or signal sucker load. I have had a few over the years.

They control the load output from the module. The pair can be controlled for the load connected to it and it can be used to control other devices.

OK Exactly where is the button? My FCC Database photos show no button. Though the FCC Database photos are the originally thought of design and may not be in the production modules.

Thank you for the information. I think they sent me an email on the subject also.

Did you have a chance to look at the revision of the 2443 Access Points? Any revision of 2.0 and above are base 2413 PLM electronics and can have the same capacitor issues. One of mine the LED on the side was off and the second one was very dim. In my case the same capacitor fix for the 2413S PLM worked. You can try power cycling them and see what happens. You can also do the 4 tap communications test on them. 4tp test also will run on the 2413S.

You may also want to run the built in tests between the two 2443 access points to see if they are still communicating. If they are any revision 2 units. They are built on the base 2413 PLM and have the same capacitor issues as the 2413S PLM. I had to rebuild mine with capacitor issues.

One possibility is that Smarthome modules and Insteon modules. Used a different dim command %Dim. X10 used extended and the original full on and dim back down. I don't have your program. If it is sending the original on full and then dim commands it may work. If it is using %dim commands. X10 modules do not respond to them.

If it is powered by the PLM. You are still using a power line only 2412S PLM? As the Dual Band 2413S PLM does not power the ISY99i or ISY994i. I would suspect the 2412S PLM has finally started to fail. Or since it is power line only. Something has changed and now you have power line noise or a signal sucker.