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Old 06-12-2016, 05:33 PM   #1
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Wet bay water pump switch power supply?

I did a search and didn't find any results so I'll ask .... On my 2001 DS.
Where is the fuse or power supply for the water pump switch in the wet bay.I checked with a multi-meter and no voltage is present at the switch.All the other switches inside will turn the pump on, it's just he wet bay I'm having issues with. I understand the basement air blower switch is only hot when the interior heater is on. Could the 2 be on the same power circuit, but that wouldn't make much sense?
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Old 06-12-2016, 05:48 PM   #2
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Quote:
Originally Posted by mikee409 View Post
I did a search and didn't find any results so I'll ask .... On my 2001 DS.
Where is the fuse or power supply for the water pump switch in the wet bay.I checked with a multi-meter and no voltage is present at the switch.All the other switches inside will turn the pump on, it's just he wet bay I'm having issues with. I understand the basement air blower switch is only hot when the interior heater is on. Could the 2 be on the same power circuit, but that wouldn't make much sense?
Mike
Hi Mike, On mine all 3 water pump switches are wired in parallel so you can turn the pump on from any of the 3 locations, and in turn , turn the pump off from anyone of the 3 locations.........I would look for a broken wire in the water bay switch, and double check for 12 VDC on the wire's going to the switch. If the switches are working inside, there is a problem with the power wire/ground going to the wet bay switch.
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Old 06-12-2016, 05:57 PM   #3
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Wet bay water pump switch power supply?

Your pump is most likely controlled with a controller like the link below.

The switches provide a path from ground to the input on the controller. Make sure your switch has a good ground connection.

http://www.intellitec.com/assets/pdf...-00145-100.pdf


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Old 06-12-2016, 06:01 PM   #4
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To save you a little time maybe, would like to just add that if any of the switches are working properly, the problem with the wet bay switch is probably not a fuse.
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Old 06-12-2016, 07:17 PM   #5
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Mike.....You can have two setups. One is the old style which uses complicated 3 or 4 way switches or what is commonly used now, a multiplex controller. If your switches are momentary, meaning you push them down and they move right back, your coach has a multiplex controller.

On the multiplex system, the switches just provide a path to ground. A wire from the multiplex switch is attached to the momentary switch and each time you push it, it connects to ground (momentarily) and sends a signal to the controller to either turn the pump on or off.

So.........your ground is bad as mentioned above or the wire to the switch is broken. There is no 12v power to the switches. The 12 volt power is wired directly to the pump and the pump ground is wired to the multiplex switch.
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Old 06-13-2016, 01:27 PM   #6
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Thanks for the input

All the switches work except the one in the wet bay. I pulled the switch and checked for voltage and there is none present on either wire. Guess I'll have to back track where the hot side comes from. Hopefully it won't be that hard to find. Still there has to be a fuse some where to protect the circuit though. Just want to know about the fuse in case I ever loose power to all the switches.
Thanks again.
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Old 06-13-2016, 01:33 PM   #7
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Quote:
Originally Posted by mikee409 View Post
All the switches work except the one in the wet bay. I pulled the switch and checked for voltage and there is none present on either wire. Guess I'll have to back track where the hot side comes from. Hopefully it won't be that hard to find. Still there has to be a fuse some where to protect the circuit though. Just want to know about the fuse in case I ever loose power to all the switches.
Thanks again.
Mike
Not sure if the switch has LED's. If not you will not see any voltage.
Need to check for a ground connection. The way the controller works is it is looking for a momentary ground connection to latch the relay on or off.
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Old 06-13-2016, 01:34 PM   #8
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If the switch just provides a path to ground, you won't detect voltage at the switch. With the multimeter set on ohms, does the switch show that it is closing? Is the other wire to the pump 12 v (+) ?
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Old 06-13-2016, 02:11 PM   #9
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Did Mike ever confirm whether or not he has a multiplexed system? I never saw one way or the other (perhaps I missed it) whether or not he has momentary switches or the other non-momentary switches. I note he has a 2001 model. Were they multiplexed back then? My 2005 gasser is not.
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Old 06-13-2016, 02:26 PM   #10
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I do not think it has been confirmed either way. My 2002 is multiplexed with the controller. Looking for a controller would be a good first step to understand how the system needs to be diagnosed.

Earlier someone mentioned that momentary swtiches are a good indicator it is mulitplexed.
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Old 06-13-2016, 07:08 PM   #11
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Our '97 uses a controller.
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Old 06-13-2016, 07:21 PM   #12
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Dutch Star Don beat me to it!

Our 2000 DSDP had the normal switch setup for Dutch Stars. Hated trying to find the switch that was turned on. When we ordered the '02 DSDP we ordered the MADP Intellitec latching setup.
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Old 06-15-2016, 12:02 AM   #13
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been busy on a plant turnaround

The setup on my 01 is just a switch either on or off. That's why I figured there should be 12volts on one side of the switch. Ill have to check for a bad ground to. I hope the power just jumps from the bathroom switch that's almost over the wet bay, hopefully it will be easer to get to.
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