Furrion Instant hot water heater

[Jchoyle]

Bought a brand new 26DBH-L Alpha Wolf Wednesday. We are now camping in Tennessee and the hot water heater won't heat the water up past 86 degrees in the shower. It heats the water at the kitchen sink up to 113 on the output and seems to work ok when using it. I've checked the propane system, checked to make sure it lights and runs, checked all the fuses. Any ideas on the tempature output problem in the shower? I dont want to haul this thing back home just to have to haul it back to the dealer. Other than that it's been great so far. Thanks for yalls help!