Suburban won't heat up past 80 fahrenheit

[GenericUsername]

Our RV is a Jayco Jay Flight, 2023 264BH
and we use a Suburban On Demand Water Heater.

Lately we've been having strange issues with the water heating up. Right now it won't heat up the shower past 80, even when we set the thermostat up. Hot water will come out of the other faucets, just not that one. Any ideas?

I've tried looking things up but I can't find anything related to my problem.

Edit: Also I'd like to know where the anti-scalding device is. The manual doesn't say

 

[Neemer]

I am unfamiliar with your rig, but what you are describing tells me there is cold water being introduced into that shower mix somehow. You may well be on the right trail with the anti scalding idea.

Good luck tracking it down. Let us know how it turns out.