Can anyone think of a reason (other than heat or system startup) that some (but not all) of the fans on a multi-PW2 system would running at full speed?
I have a Powerwall system consisting of 3 x PW2 and 1 x Gateway 1. They're hanging on the wall inside my garage. Inside temperature is about 70-75F. Everything's been working great since commissioning in March 2019. The gateway is running software 21.20.6, in time-based (formerly "cost savings") mode with 30% reserve. I'd like to believe that based on 2.5 years experience and having written my own measurement gathering software, I know what constitutes normal behavior for this system.
When we headed out around mid-day today, I heard a loud fan noise in the garage. A bit of investigation showed that the fan on one of the three PW2s (but only one of them) was running at a high speed. The only time I've heard it running this fast was during initial setup / commissioning. When we came back a couple hours later, the fan on that unit was back to normal but the other two PW2s were running their fans at flank speed. Eventually both of the other PW2s went back to normal. Everything's quiet now.
During this whole episode, the PWs were charging from solar as they do pretty much every single day. By time we came back the batteries were 100% charged and the solar was backfeeding the grid. It's neither particularly hot nor cold in the garage at the moment. The energy graphs in the Tesla app, as well as my own Grafana dashboards, show nothing out of the ordinary.
I'm a little mystified as to what's going on. Any ideas?
Thanks!
Bruce.
I have a Powerwall system consisting of 3 x PW2 and 1 x Gateway 1. They're hanging on the wall inside my garage. Inside temperature is about 70-75F. Everything's been working great since commissioning in March 2019. The gateway is running software 21.20.6, in time-based (formerly "cost savings") mode with 30% reserve. I'd like to believe that based on 2.5 years experience and having written my own measurement gathering software, I know what constitutes normal behavior for this system.
When we headed out around mid-day today, I heard a loud fan noise in the garage. A bit of investigation showed that the fan on one of the three PW2s (but only one of them) was running at a high speed. The only time I've heard it running this fast was during initial setup / commissioning. When we came back a couple hours later, the fan on that unit was back to normal but the other two PW2s were running their fans at flank speed. Eventually both of the other PW2s went back to normal. Everything's quiet now.
During this whole episode, the PWs were charging from solar as they do pretty much every single day. By time we came back the batteries were 100% charged and the solar was backfeeding the grid. It's neither particularly hot nor cold in the garage at the moment. The energy graphs in the Tesla app, as well as my own Grafana dashboards, show nothing out of the ordinary.
I'm a little mystified as to what's going on. Any ideas?
Thanks!
Bruce.