The appl. mods work with the remote and turn off/on when I activate the SC1200. I've plugged the CM15A into various outlets in house to see if line problems are occurring, but no luck.
Definately wierd.
FWIW
Everything works with a remote, so:
1. Is the CM15A your only transceiver?
2. Was it in the same outlet where it has worked for 5 years?
3. Did you install the SC12 in AHP On Alert plug-in?
If the answers are "yes", I would try deleting the appliance module macros from AHP and redo them. Also try taking the SC12 out of the equation (delete from AHP and unplug) just for testing. (Corrupted ahx file maybe)
Also for testing, delete the AHX file and create new with only the two appliance modules and see if they respond to timer ON then.
Seems to me AHP is the common element. Unless both Appliance modules are on the same circuit, it doesn't seem like a noise problem, but.....