I have 2 WS467 switching incadescent lamps and 1 AM466 switching an air conditioner(this one does not turn on or off)
OK, if I understand things correctly -
- You can turn your WS467 incandescent lamps on but not off
- Your AM466 connected to an air conditioner will not respond at all (on or off)
If this is true, I'd say that my suggestions resulted were a strike out on my part (sorry).
Refer to
Brian's post -
Something changed. Like a new electronic device is added to the home even one you may not have thought of. Like a new cell phone charger etc.
Another thing could be a installed device that was no problem has aged and changed enough to be a problem.
Look for any new devices that may have been installed. If you have a family, these may not have been installed by you (walkman, cell phone charger etc). I have found that I need a significant amount of "signal margin" to accommodate portable devices (boom boxes, etc). I have X10 amplifiers on some of my heavily loaded lines, but the portable load can still cause problems.
If you can't identify anything new in your system, something may have aged (yes appliances do age) or there may be a new source of outside interference.
In either case, unless you have an X10 signal tester that can monitor noise and signal levels, your idea of a phase coupler would appear to be good.