I have a pretty robust SmartThings network with 19 devices. These include switches and receptacles as well as two CT100 thermostats. Recently I’ve been having a time scheduled event failure with my upstairs thermostat. I have set up both thermostats on the same Routine and only the downstairs thermostat runs and the upstairs unit does not. I have tried SmartApps of different types and set up both to do the same thing. Once again the downstairs works and the upstairs does not.
The issue is not one of connectivity, I know this because the thermostat that fails to set properly is fully connected and I can set the temperature and mode via the app with no delay.
Does anyone have any idea of what is causing this or what I can do to fix the problem?