Goodwe cooling fans won't stop!

[gamosoft]

Hi there, I have an issue with the cooling fans of my GW5048-ESA inverter.

There have been a couple of very hot days in Madrid, where I live, and the fans in the inverter chassis just went off a couple of days ago, and they're quite noisy.

The issue is that even though the temperatures as you can see in the dashboard below have ALREADY dropped (and you can see the history of the last couple of days), the fans will NOT stop. For the record I do have 2 batteries installed, that's why you can see both temps in the graph.

This has happened to me the last 2 summers as well, and last summer I had the fans running for more than a week and they would not stop.

Last 2 times it happened I ended up shutting down the inverter and the batteries and they would stop from running, but I don't want to do that EVERY TIME the temps rise. Shouldn't the fans stop automatically when the temps drop?

In any case, it's been a couple of days since this started (please see in the chart how I have set some kind of threshold for the inverter temp at around 55C, and even though the last couple of days it was above that, you can see after that it would go down.

I got tired yesterday and performed a total shutdown of the system in the afternoon to see if they would stop, but to my surprise they kept running!!!!

This morning instead of that, with the inverter running, I simply restarted both batteries and the fans FINALLY STOPPED.

Turns out in order to stop the fans, the batteries need to stop... but it's a fwcking pain having to unscrew the battery chassis and perform the reset EVERY TIME.

Any ideas on what can I do to fix this?

Thank you very much.
Kind regards.