I have a 2003 Monaco Exec 40 ft. The Aqua hot was not warming the living area or the bathroom, the bedroom was toasty warm. Took it in and they found one leaking pump out of 3 pumps. They replaced it ...
Thanks for the advice so far! The RV shop has done both these things. The Aqua Hot Tech seems to think there is a air lock somewhere in the system. Any ideas?