power to dump valves

[Bobby Kirk]

THANKS FOR THE FORUM;

i HAVE A 2006 Beaver Marquis.  Haver no power coming to either dump valves. 
Can someone tell me where the fuse for switches are.  Cant seem to locate.  Thanks

/Bobby Kirk

[Steve Huber]

Bobby,
Check the fuse panel in the bedroom. It'd probably a 15A fuse that powers the water pump, water fill, vacuflush pump, and the dump valves. See pg 243 in your owners manual for the fuses and pg 54 of the 2003 Marquis wiring diagrams (should be same or very close to your 2006) for the circuit.
Steve

[Bill Lampkin]

The dump valves that were OE on our coach (Dumpmaster) have an inline 5a fuse, one for each valve. You'll have to get behind your wet bay panel to find the fuses. I moved mine to the front of the wet bay panel using panel mount fuseholders. Easy access now. New style Dumpmaster valves are a worthwhile upgrade. Stronger motor, better switches and wiring (power direct to motors). 

[Bobby Kirk]

Thanks for info is fuse in a yellow holder?

[Bill Lampkin]

very well could be. Correction: Drainmaster, not dumpmaster!

[Bill Lampkin]

If you think your valves were stuck and blew the fuse, first step is to loosen the 4 mounting screws that hold the valve between the flanges. This will allow the valves to operate more easily. If Drainmaster valves, there is a manual override (1/8 allen key) so you can operate the valves manually. Make sure there is no power to the valves when you use the manual override.

[Bobby Kirk]

Thanks for input  will continue the search.

[Bobby Kirk]

 does anyone have an idea where the 5amp fuse is for dump valves. cant seem to locate

[Bill Lampkin]

If you have torn apart your wet bay to access the valves, i suspect the 12v source is common to one of the other switches on the wet bay panel. One way to check would be to jumper a known hot lead to the dump valve switch to see if that operates the motor.

[Bill Lampkin]

The several times I have had issues with the dump valves, I initially suspected failed motors, but the cause has been a stuck valve every time. Try the manual override a couple of times to cycle the valve open / close, then try the switch (or jumper) again.

[Bobby Kirk]

both fuses to switches are good   found the wire for dump valve in bathroom on 10 amp fuse (good) have power to that line
but havent been able to trace it down to switches  took panel loose in bath but wire goes in to a bundle and cant trace from there
has to be something in common with both switches because they both went out at same time. all help appreciated much

Bobby Kirk

[Bill Lampkin]

Only option might be to run a new power wire from the fuse you found to the valve's switches.

[Bobby Kirk]

Thanks for help Bill.  After  checking everything and moving wires both valves are working.  Has to b connection somewhere.
Thanks for help.

Bobby Kirk

[Steve Huber]

Bobby,
It's probably a connection in the water bay as it is a high humidity environment. The connections at the switches would be my first focus. I suspect they run a single wire each for 12v & gnd to one of the switches and then branch it off to the other switch.
Steve