Originally Posted by rigosmom
I just bought a 2000 Monaco Executive 40 This is my first RV ever. As I expected, there were a few things that didn't work on a 16 year old RV.
I have managed to work thru most of them and had others repaired but there is still 1 thing pending. I have an AquaHot heating/water system and when hooked in to shore power (I haven't tried it on Generator/engine) I get REALLY hot water in the kitchen sink and both bathroom sinks.. but NOT the shower. The RV repair place I took it to fixed a lot of things but they said my water tank needed to be replaced. They said the hot water I had gotten before was just what was left over from running the engine??!!?? How can that be??? The darn thing was parked over a 3 day weekend.. surely the water would not stay THAT hot for THAT long if the Aqua Hot system was not working??
Could anybody help or suggest a repair shop in Sacramento that might know more about Aqua-Hot????
You should have 2 AquaHot specific switches. One is for the 120VAC heating element which is enough to maintain the temp in the coolant tank and for small hot water demands. The other, usually a large rocker type switch, controls the diesel burner. The burner is to get the coolant up to temp quickly if the unit has been off or when you have a larger need for hot water, as for a shower. I keep both my switches on 24/7/365. We have been full time for 9 years and the only time the switches are off is in specific situations.
1. Service the unit next day.
2. Travel day. Turn both off & engine heat will keep coolant heated.
3. When on 30amp shore power the electric element is turned off.
Make sure the diesel burner is firing. Turn off the electric switch & turn on a couple of hot water sources. Go stand out side next to the AH exhaust pipe. You will hear the AH blower turn on and shortly the burner will fire. There should only be a short puff of smoke and a slight Oder of diesel. It will burn for a few minutes and then you will here the burner shut down. The blower will continue to run for about 3 minutes and then shut off. If yours doesn't approximate this sequence of events you will need AH service.
There is a stir pump that should be turning on to help keep the coolant circulated. There is also a mixing or tempering value in the AH box that need attention for time to time.
Make sure you have coolant showing in the coolant overflow bottle. I'm guessing it's in the front passenger side compartment with the fuel tank and LP tank. It's mounted on the front bulkhead.
Don't know about the Sacramento area. I'm sure if you go up into Or around Coburg where Monaco use to be, there will be some experienced techs. You could also call AquaHot & ask for authorized service reps in your area.