Forum Discussion

holstein13's avatar
holstein13
Explorer
Nov 26, 2014

Hot kitchen cabinets

I've owned my new RV for a couple of months now and have been trying to figure out why my kitchen base cabinets were always hot. At first, I figured it was the accent lights at the base so I turned them off. The cabinets were still hot.

So I figured it had to be the Oasis hydronic heater in the basement. I suspected this because I noticed that my electric heating elements were on a great deal and the unit was directly under my kitchen cabinets. I called the dealer and asked them about this. They said it was normal and there was no adjustable thermostat on the Oasis. I still wasn't happy with the answer. Finally, today, I asked someone at Newmar (the coach manufacturer) and he immediately replies. I'll bet the system override is turned on.

He asked me to go outside and look in the basement at the control panel and see if the on/off switch at the top of the control panel was turned on. Sure enough, it was on. I turned it off and now the cabinets are cool and the hot water works perfectly.

While I'm a bit embarrassed that it took this long to figure out, I wanted to pass this along to those of you with the Oasis hydronic heating system. The on/off switch on mine is a service bypass that forces the system to pump water through the heating system and basement radiator. When it's off, the system works based on the thermostat. It's confusing, but off, means the service mode is off.

5 Replies

  • holstein13 wrote:
    I called the dealer and asked them about this. They said it was normal and there was no adjustable thermostat on the Oasis.


    Might not be a bad idea to let the dealer know what Newmar told you. It could be the dealer that is flipping that switch to On not realizing what it does.

    -Michael
  • wa8yxm's avatar
    wa8yxm
    Explorer III
    Do not feel bad.. When you start to feel bad about it remember this;

    One of the most common complaints about RV water heaters is that they only put out warm water, no hot water.... Of course, nearly 100% of these complaints (there are a few exceptions) all have the same source.. I call it the dog shower,, (The outside shower)

    Many of these have a cut off valve on the shower head.

    The owner opened the mixing valves, rinsed off whatever needed showering, then cut off flow at the head.. LEAVING THE MIXING VALVES OPEN.

    Now that is one I have not done......yet.... But I have come close a time or 3
  • Old-Biscuit wrote:
    Is there any labeling' for that On/Off switch on the control panel?

    Service Bypass
    Over-ride

    ?????
    It's labeled simply "on/off." While I never noticed the control box before and certainly never touched it, I would never suspect something was wrong. When I look at a control box with green LEDs on the front and an on / off switch on top, I would assume that ON is the correct position. I'll bet, hundreds of people have this on the wrong setting.
  • Is there any labeling' for that On/Off switch on the control panel?

    Service Bypass
    Over-ride

    ?????
  • That happened to us too. The cabinets were warm and it sounded like there was coffee perking in the vents. It drove me nuts after we bought our new-to-us coach. I finally called Newmar and they solved the mystery.