DC/DC converter switches the fan on

[medo]

I'm experiencing a really strange issue here: when I connect the Tesla DC/DC converter to the CAN bus and then turn it on via the web interface, it immediately switches on the fan that I connected to GPout3. I can't turn it off again unless I disconnect the CAN bus and restart the VCU. I need to try an older firmware version; maybe someone else has encountered the same problem.

[Bratitude]

Prams are going to be helpfull
But that fan turns on when zombie goes into run mode

[medo]

It's strange, I even tried switching the pin to SL1, and the same thing happened. If I increase the activation temperature to 65°C, the fan switches off and then switches back on below 60°C. That shouldn't be happening. I'll try simulating the temperature via CAN bus and see how it behaves.

[tom91]

Please post firmware version number, also a link to github branch if not a released version.

Also upload your full param list for review.

[medo]

It's the current, unchanged 2.30a version, but it's displayed as 2.22a on the web. I only have the VCU connected to the CAN bus. As soon as I plug the Tesla DC-DC converter into the same CAN bus, the fan starts at the preset value of 40 degrees. To turn it off, I have to increase it to 65 degrees.

params.json

(2.15 KiB) Downloaded 3 times

I also installed the older version (2.20a), but the behavior was the same.

[medo]

I think I've found something. I connected everything to the CAN network and monitored it on the SavvyCAN. Signals from the LDU and charger were missing. I then disconnected them individually, and lo and behold, when the ESPCANWeb isn't connected to the network, everything works perfectly. Perhaps there's something wrong with the CAN module, or maybe JP1 needs to be connected? Perhaps that's also why there are problems with the fan.