Sometimes I see a red triangle displayed in my Heat Report, what does this mean?

The red triangle shows when there is gap in your temperature data. Don’t worry, this doesn’t necessarily mean your system wasn’t working during this time, it could be for a number of reasons such as a temporary loss of connection or flat batteries. Short gaps in data are normal and frequent, so don’t worry too much about them unless they last for more than few hours, in which case please let us know.