Recent Posts

1

Technical Support / Re: Big slide doesn't extend, leveling system inop.

« Last post by Eric Maclean Co-Admin on November 26, 2025, 12:34:20 AM »

Nicholas
Glad to hear you got it fixed.

Eric

2

Technical Support / Re: Hurricane Engine Heat

« Last post by Carl Boger on November 25, 2025, 11:20:01 PM »

Thanks Steve and Fred,

I actually think that mine is all the way in front in the hurricane heating/seaward hot water heater compartment.  There are 2 valves there that have to both be facing horizontal or vertical. I believe that vertical I get heat at the vents in front and horizontal I do not.  I was told early on that they had to be in the same direction so never really questioned that. 

 I have never found a valve in the engine compartment under the bed, but the next time I raise it to clean the radiator I will go on a serious search for one.

Thanks again everyone and have a Great Thanksgiving!

3

Technical Support / Water Pump relays, switches, and wiring 99-2001 Marquis

« Last post by Fred Brooks on November 25, 2025, 08:34:28 PM »

    Greetings fellow Beaver folks,
 It has come to my attention that there is a lot of confusion how the domestic water pump on 98 to 2001 Marquis coaches is wired and controlled from multiple locations. Beaver was one of the first manufacturers to engineer a multiplex control system to turn on the house water pump from 4 different locations. Unfortunately, there are no electrical prints available to troubleshoot the system when there is a failure. I have reversed engineered the system and created a schematic to help folks understand how Beaver built it. The 2 relays that control the water pump are mounted in the upper part of the enclosed water pump and tank fill plumbing box and identified. The wiring from all the switches and lighted indicators are all daisy-chained together. I was going to add this to our technical library, but it seems to be difficult presently. Hope this helps so the original engineering can be preserved. Blessings & Joy to all this Thanksgiving!

4

Technical Support / Re: Hurricane Engine Heat

« Last post by Fred Brooks on November 25, 2025, 07:54:25 PM »

   Not real sure where that would be on a 98, This is what mine looks like on my 2000 Marquis under the engine hatch access between the side queen bed and the rear closet. Fred

5

Technical Support / Re: Big slide doesn't extend, leveling system inop.

« Last post by Steve Huber on November 25, 2025, 04:11:32 PM »

You need a separate PW and user name for the BAC club website since they are on separate servers. Your Forum PW and user name will not work unless you establish them on the BAC club web site
https://www.beaveramb.org/
Steve

6

Technical Support / Re: Big slide doesn't extend, leveling system inop.

« Last post by Nicholas Soldevere on November 25, 2025, 02:23:41 PM »

Nicholas
If both the chassis power and gen set power are not present check the 250 amp chassis main ANL fuse at the power distribution/isolator board you will find the schematic on page 43 of the 2003 patriot wiring diagrams found in coach assist.


Eric

Viola Eric!! Got to digging around in there yesterday after finding no 12v up at the chassis power center. I went back there and found those fuses on the ceiling and sure enough nothing getting through that 250A chassis fuse. Took the fuse out and hooked it up with a battery jumper and the thing powered up and started. Fuse is on order, should be here today.

I suspect when the ground wire to the pump solenoid let go, it took out that fuse too, which is interesting because that pump has its own fuse. Ill be checking everything today, hopefully leveling system and big slide extends and the genset starts. Ill report back.

Can anyone help me with "log in" issues?  I can get in here on this forum,  but not the BAC website and not the schematics. A bit problematic when trying to troubleshoot.

EDIT: Thanks anyway, I have today successfully gotten in there to the drawings!! I noticed the sign in calls for email address vs screen name.

7

Technical Support / Re: Hurricane Engine Heat

« Last post by Steve Huber on November 24, 2025, 05:36:37 PM »

Carl,
I initially couldn't find the seasonal valves on my 2000 Marquis either. I finally located them tucked away on the driver's side under the flooring near the bed. Had obviously been installed by someone a lot more flexible than me. In any case they were not at all obvious. Also found mine were labeled in reverse (summer was winter, etc).
Steve

8

Technical Support / Re: Hurricane Engine Heat

« Last post by Carl Boger on November 24, 2025, 03:47:39 PM »

Thanks for everyone's help.

I am going to chalk this one up to OPERATOR ERROR!

I have to have the furnace actually running for the Engine Light to illuminate!  On my coach at least the thermostat has to be on heat, the Hurricane system turned on and once its running the engine heat switch will work.  The hurricane pump will run with the pump switch turned on or off depending on the signal it get from the control board.

As for the manual valves under the bed, I may have the only coach that does not have them.  I'm not sure if a prior owner deleted them or if they were never installed.

Anyway the good news is everything is working properly again.   
Thanks again for everyone's help.

9

Technical Support / Re: Hurricane Engine Heat

« Last post by David T. Richelderfer on November 24, 2025, 10:24:30 AM »

From reading this Forum over the years, I have learned there is a circular "loop" running from the engine forward through the coach furnace (Hurricane or AquaHot) and on to the dash heat.  There are one or two manual valves in this loop located under the bed (or under the engine access door in the bedroom floor).

When the engine is running, the loop's coolant circulation is provided by the engine's water pump.  When the engine is not running, the loop's coolant circulation is provided by a pump in the coach furnace (Hurricane or AquaHot) that is activated by turning ON the Engine PreHeat switch.  I can hear the coach furnace pump start running to push coolant through the loop when I turn ON the Engine Preheat switch.

Of course, to preheat the engine, two things are needed - heat and moving that heat to the engine.  So, turning ON the coach furnace (Hurricane or AquaHot) provides the heat and turning ON the Engine Preheat switch activates the pump to move the heat down the loop to the engine.

10

Technical Support / Re: Big slide doesn't extend, leveling system inop.

« Last post by Eric Maclean Co-Admin on November 24, 2025, 12:43:21 AM »

Nicholas
If both the chassis power and gen set power are not present check the 250 amp chassis main ANL fuse at the power distribution/isolator board you will find the schematic on page 43 of the 2003 patriot wiring diagrams found in coach assist.


Eric