Well, I did some more digging and found something. This isn't good news. I've determined that at best, if you want to use Fahrenheit with the Victron Cerbo GX and the Touch 50 that you're going to have to make sacrifices as it does not work properly.

I found this thread that describes a workaround:

https://community.victronenergy.com/questions/74048/temperature-sensor-with-cerbo-gx-and-touch-50.html

First, you must get super user on the device. There is a link in this thread and it's easy to do. Then you use an offset of 32 degrees and the scale factor of 1.8 and you'll see say, 25 degrees Celsius can be converted to 77 degrees Celsius. That isn't a typo, it is the value in Fahrenheit but uses the Celsius unit instead of Fahrenheit because it isn't really a fix, it's a workaround. In other words, Victron has a bug(s) in the code that is preventing.

So, here's how that looks once you apply the workaround. It's 67 degrees Fahrenheit in the van but it shows up 67 Celsius. Ok, I can live with this I thought:

However, now lets go back to the VRM pages:

Now it's 152.6 degrees? Ah yes, it's the actual temperature in Fahrenheit, times 1.8, plus 32 degrees because of the workaround on the temperature sensor to make it look right on the Touch!

I know, I'll just change my VRM units to Celsius too and fix that right?

Wrong! Now all the other units are in Celsius too! Well, how's it look on the app? The app uses it's own units and that looks good on my shunt:

But it doesn't look good in the VRM still from the app:

I get that there probably wasn't extensive testing for Fahrenheit when this was developed in a European country but they intended for it to work or wouldn't have put the feature in. I am disappointed in the Cerbo GX/Touch 50 combo for sure. It was more than $500 US and I would expect that after as long as it's been on the market that this would have been addressed by now.

Bummer! I heard back from Victron today and there simply is no solution to make Fahrenheit work properly at this time for the Cerbo GX/Touch 50. If the workarounds above work for you, then you're set. Otherwise, at this time, there is no solution to this problem for the foreseeable future. Maybe they'll work on it, my guess is it's very low priority because Fahrenheit is only used in the US and a few island nations. Still, I feel a little duped by it all to be honest. There was clearly a provision intended for Fahrenheit and it simply doesn't work properly. That's a defect in the code and I'd certainly like to see it fixed.

FYI, I did hear back again today after my follow-up email. I was told that imperial units were a high priority because of Victron's growth in the US market. That's great news for folks like me that would like to see this working. There is so little on the internet about this topic (from what I can find) that I just want to keep this thread informative for folks that might be searching for answers. With any luck, we'll see this fixed in an upcoming release soon. Fingers crossed!

Anybody know when this is going to launch?

It's 1.5yrs later and still no Imperial Units? Come on Victron, pretty please!?

Bump for us American Fahrenheit dependent people.

Fahrenheit in VRM still doesn’t appear to work. Or I can’t find where to set that I want everything in Fahrenheit. It’s not in the user profile page like it maybe was a few years back that some results reference.

Edit: very buried. Had it hit back a few times and stumbled across a preferences menu item finally.

https://vrm.victronenergy.com/profile/appearance

This has the setting to change to Fahrenheit