Tankless water heater

[Charles Reese]

2024 Artic wolf 27SGS. First time out this year, water filter had a crack in it so hooked up directly to coach. Very good water flow, maybe too much? Hot water is Luke warm when turned on full blast and seems pretty good turn down some. Set at 120F and shows no codes or anything on panel. Could it just be maybe with the high water flow it can’t keep up.
Thanks

 

[Mookie58]

Are you running city water into it from your home? I'm not sure if flow rate is the issue, but you could try a pressure reducer to knock it down and then see if the temp improves. Another thing is that the WH will only raise the water temp so much from the temp of the incoming water. If the incoming water is very cold that may affect your output temp.

 

[Charles Reese]

I’m at a RV park for a summer test run. At home it worked fine and I’m on a well system. Would a water filter reduce it some or would you recommend a reducer.