I own a Z690 Extreme Glacial, it's been running perfectly happily with a 12900K since launch, I just recently upgraded to a 13900KS. In so doing obviously I had to update BIOS (to 2602, for transparency) and the ME + firmware. After the upgrade, Armory Crate did a bunch of updates as well.
In so doing, the flow rate sensor now reads a stead 0L/M, despite me knowing the pump's chucking water through and I can see the little black wheel spinning.
I've checked the WB connector and it's fine, no damaged pins or anything from opening it up. It is reading water temps so it's not grossly defective at any rate. I'm assuming the flow rate sensor is integrated with the spinny black wheel, so it should be seeing movement. Is there any trend of issues seen in this area on the latest BIOS or Crate?
It's not too worrying, my temps are great and as I say the coolant is definitely moving, I'd just like that safety blanket of a working flow rate display back.
I don't know what the issue is, but if the CPU has been changed then it might be a good idea to reinstall Windows to ensure that everything is 100%. Think I've read before that this is a good idea after a CPU change, even though many articles say that it shouldn't be necessary. There are some articles that say it can be helpful after a CPU upgrade, others say no need. However, pretty sure I read on these forums that a fresh install fixed some strange issue for at least one other person. At least you'll know that everything is correct and hopefully, the sensor will be detected again.
If you don't want the hassle of backing up your data and trying a fresh install, then removing Crate (there is an uninstall tool on the support pages) and reinstalling that might help (or any other 3rd party software associated with the pump).
Regardless of my comments above, a fresh install every few months does help to keep things running at their best in my experience and if nothing else, it will clear out a lot of accumulated software and other files that are probably no longer needed. I always find everything to be a lot snappier after a fresh install. It's just a pain to get everything set up again as you like it.
Thank you for the suggestions but it's definitely going to be something in either BIOS or hardware, given that from the monitoring tab in BIOS it reads n/a on the flow rate sensor and that's new behavior.
If the connection/data isn't available to the BIOS, itr's certainly not available to Crate to feed to the OLED. Nothing's wrong in Windows or Crate otherwise (apart from Crate being Crate...)
I tried booting over to the other BIOS just to see if it's a version bug, but I haven't kept up on my housekeeping so it's still at shipping level BIOS and doesn't like the memory and CPU. Until I can muster up the energy to do a bios flashback onto the backup bios to one of the last known good BIOS versions that support the hardware I guess I'm going to live with it and wonder.
When I take this off the testbench and install it into its final home (a Corsair 1000D), it will have bitspower flow and temperature meters externally so it's not a major deal just annoying.
Ah, OK. I don't have a flow sensor. So does it connect to a motherboard header?