Forum Discussion

purplekeenah's avatar
purplekeenah
Explorer
Oct 20, 2020

Oasis Hydronic water heating

Woke up this morning to find we had no hot water. Everything was fine last night after our showers and dish washing. While trying to find the cause I had the Newmar supplied sketches of the fuses, breakers, etc., there are supposedly (2) fuses for the Hydronic system on a board that is described as being in the basement compartment that has the shore power hookup. Much to my dismay, I can not locate that board. The only things inside that compartment is the power line reel, cable hookup, automatic transfer switch, and a whole lot of other terminal-type wiring. Any ideas?
Class A
  • oldave's avatar
    oldave
    Explorer
    Oct 20, 2020
    Can't help you but here is a place where you can find help

    http://rvhydronicheaterrepair.com/

    Ray
  • Racklefratz's avatar
    Racklefratz
    Explorer II
    Oct 22, 2020
    purplekeenah wrote:
    Woke up this morning to find we had no hot water. Everything was fine last night after our showers and dish washing. Any ideas?


    No idea which system your coach has installed. But in our Tiffin, and when the same issue occurred, it turned out to be a failed thermostatic sensor which, if failed, disables the system, resulting in no hot water. Ours is HydroHot.
  • JoeH's avatar
    JoeH
    Explorer III
    Oct 22, 2020
    Most likely the summer loop pump has failed. On the Oasis panel, are there any fault lights illuminated ? On top of the panel, there is a bypass switch, turn it on and see if your hot water returns.
  • purplekeenah's avatar
    purplekeenah
    Explorer
    Oct 22, 2020
    Racklefratz, you got it. The problem is the AQUA STAT, sensor that is clipped to the hot water delivery line.

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