Hi All,
Here's one that really has me scratching my head.
Recently I lost the ability to control two incandescent lamps connected to an LM465 lamp module. I replaced the module but the problem remained. I tested both modules at my bench and found that they worked fine. I tried an AM466 appliance module but it too would not respond. I got frustrated an installed an RR501 module which works because it receives the RF control signal via its antenna, not the AC line. I figured my passive coupler had failed and that it was time to replace it. I replaced the passive coupler with an XPCR active coupler and sure enough I can control the RR501 from mini-controllers or my CP290. I replaced the RR501 with an AM466 but found that I lost the ability to control it. Replaced the appliance module with a lamp module and control is back. So a lamp module works, the RR501 quasi-appliance module works, but appliance modules won't work.
Now it gets bizarre. The problem only occurs in the last two outlets on the circuit. In any other outlet on the circuit, any of the modules can receive X-10 signals and work as they should. I don't actually know where the affected outlets are on the circuit and don't have access to the wiring to confirm their location. Any ideas as to why only AM466 appliance modules are affected and only in these two outlets? Note, there are no CFL bulbs involved.
Thanks, Mark