Can't get 2 codes to turn on

[ch875]

Hello, I am running AHP 3.203 with cm15a.  Not doing anything fancy, using 6 modules with just some dusk delay timers. Have been using for at least a year with some problems, but have always been able to resolve.  A few weeks ago 2 units A6 & A7 stopped turning on.  They are scheduled on at dusk delay.  They do turn off. I can turn on manually from computer. They are both receptacle modules.  I have tried the following:

Deleted and added back in.
Changed module type
Unplugged CM15, removed batteries, waited 1 hr., re-installed
Changed to no delay

They will turn off OK using timers, but not on, except manually.
The activity log shows no signal being sent for on.

Anyone have any ideas?

Chris

[Dan Lawrence]

Could be noise.

Any new electronic equipment on the circuits with A6 & A7? 

[ch875]

I have added a seperate circuit for in floor heating, I will try turning off breaker to see it it does anything.  These modules are at opposite ends of the house.  I do have a few filters placed where necessary.  I guess I'm thinking if I can turn on manually and they turn off ok it wouldn't be noise or something eating the signal.  Also, since activity log shows nothing sent I'm still scratching my head. I'm thinking about changing those codes.  Thanks for the reply.

Chris