I have a HA system that has worked well for 5+ years, but suddenly developed a strange problem. The general architecture of the system is a CM11A that sends commands throughout the house, with a Leviton coupler/repeater at the panel. The problem I have is that one of my Leviton 6381 dimmers suddenly stopped responding to any commands after it's turned on. It turns on fine, but any off or dim settings are ignored. I swapped out the dimmer for a known working one, but that didn't help. It's in a 2-gang box with another 6381 that works perfectly. They both share the same hot, neutral and ground - only the load is different. I even tried replacing the light bulbs connected to the dimmer with the problem, but that didn't help.
Interestingly, when I use a TM751 on the same circuit as the problem dimmer, it works OK with a PalmPad but continues not to work with the CM11A. However, when the TM751 is plugged in, the adjacent dimmer in the 2-gang box also stops responding to OFF commands.
I can't think of any recent additions or changes to the in-house wiring that could be causing any noise or other problems.
Any thoughts on what could be at play or other troubleshooting steps?
- Dave
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Topic: Dimmer that won't switch off (Read 2548 times)