Gerald,
First, my apologies for the problems you are experiencing. As I explained on
the phone to you a few days ago, this does sound like an altitude-related
issue and one that I am aware of, it has come up in two other units that I
know about. I also told you that Propex is sending larger gas jets to me
that will hopefully alleviate the problem. However, I can't possibly say
exactly what day they will arrive in my mailbox, nor can I fix your heater
unless it is shipped back to me. It is warrantied two years from your
purchase date, unless opened by someone other than myself or other
authorized Propex representative.

I also recommended that you verify the regulator(s) are still set to the
proper pressure of 13~14 wci. The 'growl' in the exhaust on startup is
normal, that is the way they all sound until the fan and burner kick up to
the 'run' stage. You might also want to verify that your tanks are clean and
moisture-free inside, as moisture will freeze up the regulators.

If you'd like to send the Propex back for the jet upgrade once I have the
jets in hand, I'll be happy to take care of that and ship it back to you
no-charge.

Karl Mullendore
www.propexusa.com

 On Fri, 27 Apr 2007 23:03:14 -0700, Gerald Masar <azsun99@EARTHLINK.NET> wrote:

>I recently installed a Propex HS 2000 in my '90 Westy, and increased the
gas pressure
>to the recommended 13"W.C. It is wired to the aux battery under the
driver's seat and
>I also installed a connection to run it off of an external power pack if
necessary. I
>have two propane tanks. I don't do cold very well :(.
>So, a shakedown cruise was made last week, to the South Rim of The Grand
Canyon.
>Elevation just under 7,000', daytime temps in 50's and 60's, and nighttime
into the
>20's and 30's, and one day of cold, miserable gale-force winds. Nice to be
able to
>stay inside and stay warm. So far, so good.
>On the 3rd morning, woke up to see the LED flashing code for low battery.
Switch to
>the other battery and back in business.
>On the fourth morning, woke up to see LED flashing code for no gas. Okay,
well the
>stove still worked, but switched to the other tank anyway. Now, not okay.
Still says
>no gas. Switched unit off and on several times, switched tanks, still no go.
>On the way home, stopped for lunch and tried it again on #1 tank. Now it
works and is
>still working.
>QUESTIONS:
>Has anyone else experienced intermittent operation under similar conditions?
>I hope it isn't altitude related, because some of my favorite campgrounds
are at
>9,000' and 10,000'.
>The instruction manual says that the red LED should dim after set temp is
reached,
>indicating unit is in standby. Mine doesn't, does yours?
>The noise of the burner, at least until the fan speeds up and masks it, I would
>describe as kind of a growling noise, not a smooth sound. What does yours
sound like?
>
>A phone call to PropexUSA so far has been inconclusive.