if you find that the aqua hot is popping and blowing white smoke or running rough, here is a quick fix till you get to a repair center!
I disconnected the supply line from the original racor for the AH and installed a new racor in the AH area. I then ran a new fuel line from the new racor through the hole where the battery cables run through and removed the fuel cap and inserted the new fuel line. I also removed and replaced the supply line to the AH and installed it to the new racor as well. I does take several tries to get suction for fuel to the AH, but once it does, you are good to go. If you decide to travel, I recommend removing the fuel line, coil it up and plug it and put the fuel cap on for travel. What happens when you see the white smoke, rough running and popping, your fuel lines are allowing air into the system. Not good and it will shut your AH down at the most inopportune times, like 2 in the morning, etc. Hope this helps someone else who is having these systems for a quick fix. It will work until you get the necessary service! You are now looking at replacing all the fuel lines, since it is just a matter of time for the rest to develop air in the systems!