New to us Monaco and I'm having some Aquahot issues. It's a 450D model. It was serviced before we left and working on the burner. My issues are that the front of the coach just blows cold air. The...
You have 3 pumps in the Aquahot. The pump to the right of the burner is the stir pump, See if that one is running. If the stir pump fails you wont get much hot water at the faucet.
You also may have a remote booster pump, mine is on the opposite of the coach, I don't know where Monaco would put one but if it isn't working, you won't get heat up front.
Aquahot has a great service manual on line that gives a lot of info that helps with troubleshooting