1988 FC water coach heater question

[Scott Forman]

On my coach (82 FC), there are two standard plumbing valves just like
your home garden hose spigot in what look like heater hoses running
back from the radiator. They are behind the front left wheel. They
cut off all water flow to the back.

The summer/winter switch activates a solenoid that allows water to
flow to the interior heat exchangers. Interestingly enough, even
in "summer" mode, water should still flow back through the lines to
heat the hot water heater for your over-the-road hot water. But
there are two different return lines, one that goes through the heat
exchangers, one that doesn't. That's what the solenoid controls.

I chased the opposite problem on my FC, the interior heat exchangers
would not receive water. I ultimately determined that a wire had
come loose from the back of the winter/summer switch, once
reattached, it worked perfectly.

Good luck.

Scott Forman
82 FC35RB
Memphis

--- In WanderlodgeForum@yahoogroups.com, "birdshill123"
wrote:
>
> We are on our maiden voyage in the new to us Bird. I will post a
story
> of the trip later. Right now I have a small problem. I have the
blue
> Box for our unit but section 10 with all the plumbing and
electrical
> diagrams is missing. Our coach has a heater (engine hot water)
under
> the kitchen drawers beside the fridge. We are in AZ. It was 101
today.
> My wife went to get something from the drawers and she said she
almost
> burned herself. I checked and the heater core. It is damn hot.
Checked
> the switch for summer/winter and it is set on summer. How do I stop
> the water from circulating to the heaters? I know the switch is
> supposed to activate a solenoid. Where is that solenoid located?
Why
> couldnt they use a simple Ranco valve? Without the diagram for the
> heaters I am having trouble figuring how this works. Are there
> seperate lines going to the water heater? For now I would like to
just
> install a simple gate valve to stop the water from entering the
> heater. I havent yet checked to see if the other heaters are also
hot.
>
> Thanks: Bruce
>