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Old 05-16-2016, 08:13 PM   #1
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What is the location of the Intellitec water pump relay?

My water pump quit. I installed the spare. It quit too. I tested the first one directly off the battery and it ran fine. I have two momentary switches to start/stop the pump and also the Silverleaf. An RV tech said with these symptoms and the number of switches there has to be an Intellitec relay somewhere in the coach that has become corroded. I opened the two opposing smart beds and crawled in for a look. Of course the supply wires disappear into that plastic conduit so I couldn't trace them. I also looked near the switch in the wet bay and by the one in the lav. No joy. A search of forums disclosed the following from Basil Shannon:

"The above controller is rated at 10 amps. I notice there is a 15 amp version of this controller which might be a better choice for the Shurflo 5.7 which is fused at 15 amps.
http://intellitec.com/pdfs/MOTOR%20C...300776.000.pdf

My 2006 Apex already has momentary switches in the bathroom and service bay which suggests it already has a controller or latching relay somewhere but I have never found it."

So I ask the 06 Apex owners if they have located this relay and if so, where.

Thanks,
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Old 05-17-2016, 06:54 AM   #2
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Janet and Todd, I wish I could help you. I looked in the library for info and I couldn't find anything on the opex. I did see a 2006 and checked the wiring on it and it was just like mine. It had a 15 amp fuse feeding to the light switch and monitor and to the pump and of coarse the pump has a pressure switch. Sorry somebody on here should have a diagram for what you need.
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Old 05-17-2016, 07:36 AM   #3
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Janet and Todd, one more thing then I'm done. On a 2008 they changed the location of the fuse box for the pump. It shows they started doing that in 2006. That fuse block is located under the toilet in the basement block number 54. That feeds the pump. I hope that helps and that's all there is on this.
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Old 05-17-2016, 07:43 AM   #4
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Thanks Larry. My fuse block is not located under the toilet, rather, I found it beneath the HH annunciator panel behind the inside door of the wet bay. I think I'll email Silverleaf. Since we can operate the pump through the Silverleaf, they may know where the relay is located.
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Old 05-17-2016, 08:04 AM   #5
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Look in the same compartment as the 12V fuse box.
May be behind it.

And the 10 AMP relay will power the 5.7 just fine. At least it did with mine for years until the pump went bad.
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Old 05-17-2016, 10:06 AM   #6
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I downloaded the Shurflo manual from the Tech Library. It talks about the Intellitec relay and the Bosch automotive type relay. Perhaps WRV used the Bosch instead. There are a bunch of these bundled up and zip tied right near the TM102 in the tank bay. Examining the Bosch relays near the TM102 in the tank bay disclosed a damaged one with a red wire attached. I think this may be the pump relay because it's the only one with red wires. Thoughts?
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Old 05-18-2016, 11:27 AM   #7
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How do I get more amps?

I replaced the above relay but it didn't solve the problem. I think those relays in the tank bay are for the HWH in the back half of the coach. I discovered that the pump runs fine when connected directly to an independent power source. The issue seems to be the coach wiring not delivering enough amps to satisfy the pumps needs.
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Old 05-18-2016, 03:13 PM   #8
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Todd
Go back to your email from EMike, he sent both of us a schematic, for Water Full SL Bypass, Jan 24, 2016. I haven't tried to interpret what it all means, but maybe it will help you out.
There are some relays on the fuse block, back wall, above the batteries. Maybe something there.
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Old 05-19-2016, 12:02 AM   #9
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Hi Ed,


Thanks for the reminder. The email is lost but the file SL Bypass Circuit 6.6.13 I still have. I'm looking at it but I do not understand it. Perhaps a tech might.
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Old 05-19-2016, 12:53 AM   #10
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Happened to us on the way to Alaska in 2013. E Mike suggested running a new power source to the pump. Also made up a work around the Silverleaf with relays so I can switch water pump and water fHappened to us on the way to Alaska in 2013. E Mike suggested running a new power source to the pump. Also he helped me make up a work around for the Silverleaf with relays so I can switch water pump and water fill to another separate power source and switches.
Is your TM102 have power or intermittent power? Also I found the red wire in the plug that goes into the TM102 was not making good contact and was not providing constant power and .affecting things like the pump, jacks, water fill and slides. I replaced the insert for the red wire in the plug and no more problems. My original pump is working fine also.
Good Luck with finding the source of your problem.
ill to another seperate power source and switches.

Is your TM102 have power or intermiient
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Old 05-19-2016, 12:49 PM   #11
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Thanks Ed and Jim. I will check the TM102 red wire and the relays at the back of the battery bay asap. I have to get Janet to the dog show in Lynden. Staying at a park with full hookups
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Old 05-20-2016, 05:03 PM   #12
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FIXED - pump is running

So here's the scandal... the manual points to a relay for the water pump on the "chassis fuse block". I looked on the back wall of my battery bay and found the fuse block which contains two Omron micro relay and a 30 amp "fuse" in a metal can in the upper left corner of the picture. The legend , lower right of the pic says it's for the ABS pump. I wiggled it in the socket and had Janet turn the water pump on via the SL VMStv and heard the "fuse" click. Each time she cycled the pump on and off it clicked. I believe that this is a relay, not a fuse and it's for the water pump, not the ABS. It could be for both, who knows? Anyway, I bled down the pressure of city water and the pump started and ran. Case closed hopefully. I hope other APEX drivers find this thread useful if/when their water pump quits. Thanks to all those who offered help and especially to Ed for suggesting the fuse block as a good place to look.
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Old 05-23-2016, 09:35 AM   #13
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Oh, and the relay in question was actually a Buss 21230-00 14VDC 30A L13 breaker.
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Old 06-29-2016, 02:39 PM   #14
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Actually the relay is not the Buss 21230-00 14VDC 30A L13 breaker. It is, in fact, the "Micro Relay" labeled as such on the lower left corner of the fuse block in the battery bay. The pump went out again and Gary Arnold helped me discover what the issue was; corroded pins on the micro relay. All cleaned up and running good now. Thanks again Gary.
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