Hi Leon,

The yellow triangle only means after the unit execute the schedule, when it send signal to the cloud, the cloud did not receive the signal, which may be caused by internet glitch. As long as your unit is online and your sprinklers run , you do not need to worry about that. 

The unit download schedules everyday on the local, when it execute the schedules, it do not need internet. Only after the execution of a schedule, it will send signal to the cloud to let the cloud know if has finished the schedules. 

Thanks,

Wency

Netro Support