I looked up your specs for the RV you have, it requires 50 AMPS of service for the hot water tank to work properly. If you are plugged into 30 amp service, this may be your problem.
As someone stated early, check the proper setting for the bypass valves for the hot water tank.
Sid, Lois & HRH MISSY Terrible 2s SHIH TZU
2011 ROCKWOOD 8285 WS
2014 F-250 KING RANCH PS/SD/6R140/BFT
BOLIY PRO 3600SI GEN
DAYS CAMPED 2016 57 DAYS