Oasis Hot Water System in 2017 Ventana

[pjgolpher]

Have a new 2017 Ventana 3709 all electric. We've been out in it twice since we bought it. First time all went well, don't remember what the thermostats were set on. Second time was fine until it wasn't. We had no hot water. In order to use this system do we have to have the Thermostat in zones 1 and 2 on HP or Furn or Cool or any of these or?
Any help would be appreciated.
Thanks
PJ

[stang37]

I have a 2016 Ventana with Oasis system. To get hot water for showering or washing dishes you have to turn on either the diesel burner or the AC heat strips switches located in the control panel above passenger seat. The thermostat has nothing to do with having hot water. If your thermostat is set to furnace you will have to have the Oasis system on to produce the hot water for heat.

[barnegatepic]

Agreed, We have the same coach and all you need is the system set to burner or AC-1 or AC-2. AC-1 will give you enough to wash your hands and such if you want to shower you will need to go to AC-2 or burner.

[Bushy]

My experience - If you have only little need for hot water, AC-1 will probably be sufficient. For more hot water needs you will probably need AC-2. If you have heating needs, especially in combination with hot water needs, you may want to fire up the diesel burner. It's a bit noisy if you have close neighbors. If you have all three "on" you will have all the hot water and heat you need. These switches are in the cabinet above front passenger seat.

Turning on AC-2 may require you to be connected to shore power or genny.

[C.Martin]

Originally Posted by Bushy

....Turning on AC-2 may require you to be connected to shore power or genny.

Yes definitely...

To power Oasis...the least you can have is the House Disconnect switch turned ON, so your coach has 12v power to the Oasis Control Unit...And the "Burner" switch turned ON.

If you have shore power, or the generator powering the coach...then you can use the electric heating elements in the Oasis system. They have three switch positions...1, OFF, 1
+2. You should get hot water in any configuration other than OFF for the burner, and OFF for the electric elements.

Here's a situation to consider...

IF you are powering the coach on less than 50 amps...AND you have the EMS installed(Precision Circuits Energy Management System)...AND you have ONLY selected the electric elements for OASIS....AND you are running lots of high draw appliances....maybe doing laundry, with the microwave/convection oven on, cooking with induction cooktop, etc... There is likelihood that the EMS will "load shed" and turn OFF power to your Oasis Electric Elements.

If your switches are all in the correct position...then there's a problem. I would start with making sure the 110v circuit breakers for the Oasis electric elements are not tripped...and move on to the myriad of 12v breakers/fuses that supply the Oasis system...finally, it could be a problem inside the oasis such as low heat transfer fluid level, or a faulty temp sensor...

Hope we get it working for you. It's a great system! But sometimes a unit makes it out with a crossed wire or faulty sensor...and then it takes some troubleshooting to make it all work like it's supposed to.