Replacing flow sensor on water heater

[liketosee]

Thought I would pass along something I found this winter. Our '22 Precept 31UL tankless water heater stopped working and I was able to figure out it was the flow sensor. This is a common point of failure it seems.
I ordered the part online and found a few YouTubes on the replacement. All of the ones I found said I would have to remove the water heater from the motorhome to access it, and at first glance this seemed to be the case. Rempval means disconnecting main water lines and the gas line it seems.
After staring despondently at it for a while , I found an easy way to replace it though. I removed the control board first and it was very easy to get at it. The circuit board has a lot of connectors going to it, but I found that all of them were a slightly different connector, that made it easy to put back together. Of course I also took a lot of before pics in case and that helped with wire routing.
The whole replacement took about an hour to do BTW, and that was at the campsite. Hope this helps someone out!
Ken

 

[Paul B-FRF]

Had to do the same with my home tankless....after all there is more than one way to skin a...
Paul B

 

[JoArt-JAY]

I have a 2016 31UL and have not had that problem (yet). Thanks for your insight and post.

 

[Finally Able]

Thank you! Ww have the same year and model, so I'm going to save this idea by copying and printing it to put with the manual. I'll also oder a new flow sensor just in case the inevitable happens.