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Old 12-13-2018, 02:25 PM   #1
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THOR #11594
Fresh water pump

2014 Windsport 27K
On my last trip my water pump stopped pumping when not hooked up to city water. I keep my fresh tank at least 1/3 full. I'm currently parked in my driveway, hooked to electric but not water. over a week's time my commode fills up. Thoughts??
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Old 12-13-2018, 03:07 PM   #2
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I'm not sure I'm following you: are you saying that your water pump is not working when you want it to, or that your commode is filling with water when you don't want it to?
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Old 12-13-2018, 03:28 PM   #3
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The water pump dies not work on faucets or commode. RV sitting in driveway. Commode slowly (over a week's time) fills to edge of water flow thingy 😀😀. (New term. Don't know what it's called)
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Old 12-13-2018, 03:33 PM   #4
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The water pump dies not work on faucets or commode. RV sitting in driveway. Commode slowly (over a week's time) fills to edge of water flow thingy 😀😀. (New term. Don't know what it's called)
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Old 12-13-2018, 03:40 PM   #5
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When disconnected from city water: Is the switch for the pump on? If it is, look in the converter panel for a blown fuse.

For the toilet: Looks like you have a leaky valve.
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Old 12-13-2018, 04:33 PM   #6
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If the water doesn't work when trying to flush the commode, where is the water in the commode coming from?

Normally I would say you have a leaking flush valve with residual pressure in your water header preventing the pump from starting and the pressure slowly leaks into the commode from the leaking flush valve.

How long have you had this problem and could it be someone winterized or de-winterized incorrecly and you have some valves out of position?
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Old 12-13-2018, 05:41 PM   #7
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Switch to water pump off. Not hooked up to city water. Only water in RV is fresh holding tank 1/3 full. Commode will fill to this level in 7 days.
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Old 12-13-2018, 05:42 PM   #8
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Fuse checked. Not blown. Light to WP on panel lights. Pump dies not prime
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Old 12-13-2018, 05:46 PM   #9
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The water pump worked fine on 5-week trip Sept-Oct. Stopped working a couple of days before end of trip. RV has NOT been hooked up to water hose at my driveway since. Commode fills up in a week.
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Old 12-13-2018, 05:53 PM   #10
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my toilet, which is the same type as yours, recently started 'filling' up the bowl... while on city pressurized water. I 'kicked' the foot pedal several times and it has seemed to stop, but the worry is that if it doesn't, there's nothing to keep the water from potentially overflowing the bowl.
Because I had added an inline cutoff to the water line behind the toilet several years ago, I didn't worry about this recent problem too much since I could just cut off the water.

Now, interestingly, while off-grid for a day or two a while back, and on the water pump, I noticed the same issue. But even AFTER I turned the water pump off, the toilet would continue to sputter and make sounds as it continued to flow/drip water into the bowl, even 5 to 10 minutes later it continued.

My only idea is that these toilet systems employ a cartridge that controls the foot pedal's action to bring in water to the bowl, and the cartridge is not closing completely when the foot pedal is released. I guess even water pressure build up left in the lines from the water pump can continue for quite a while.... maybe. (?) Who knows.

Try cutting off the flow from your water tank - turn your water valve outside from Water Tank to something else, and see if that makes any difference.
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Old 12-13-2018, 06:39 PM   #11
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Quote:
Originally Posted by Corkerinna View Post
Fuse checked. Not blown. Light to WP on panel lights. Pump dies not prime
"Pump does not prime"?

So when you turn on the water pump does it just run and run with nothing?

Do Windsports have the wet bay where you have to switch back and forth between city water and on board water? Are you switching this (if it exists)--my coach doesn't have this.

If you don't have that and the pump just runs and runs--did someone turn off the valve between the fresh water tank and the pump?
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Old 12-13-2018, 06:45 PM   #12
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The pump does NOT run at all
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Old 12-13-2018, 07:08 PM   #13
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Pump not running at all we're back to looking for fuses and/or an electrical problem. Do you know if you're getting 12V at the pump? (Take a volt meter to the connections at the pressure switch.)
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Old 12-13-2018, 11:40 PM   #14
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Is it possible the water in the toilet is coming from the water in the fresh water tank seeking its own level? Can the water pump allow water to flow through if something internally is stuck open?
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Old 12-14-2018, 06:37 AM   #15
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have you checked the relay? When I thought our pump went out it just turned out to be the relay.
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Old 12-14-2018, 01:36 PM   #16
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The water pump is NOT working at all.
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Old 12-14-2018, 01:39 PM   #17
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Well, y'all are over my head. I'm a 73 yr old widow so not familiar with the things y'all are suggesting, but it gives me some info to query an RV repair guy.

I thank each and every one of you for chipping in.
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Old 12-15-2018, 02:03 PM   #18
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Where is the relay? And how do you check relay?

I have a friend coming today with volt meter.
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Old 12-15-2018, 03:40 PM   #19
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Hi, while I don't know specifically where the pump relay is in your coach in my 2013 ACE 30.1 there are three relays under the bed, one of which is the pump relay. The others are ignition lockout relays to prevent operation of devices when the coach ignition is on. Attaching a picture of the three relays for your reference. You could try calling Thor with your VIN number and see if they can advise you on relay location.
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Old 12-15-2018, 04:29 PM   #20
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Regarding how to test the relay I would suggest that your friend first determine with the multimeter that the water pump is or is not getting +12vdc....and that the motor wire connections are good. It could be a dead motor too. If there is no +12vdc at the motor then you can start checking the pump relay (once you find it). Easiest verification of the pump relay is turn on the pump power switch (red light comes on) and have the other person listen at the pump relay for the pump relay to click (operate). It might be a very low sound. If pump relay does not operate check for 12vdc and ground on the relay coil connections. If the relay operates OK then check for 12vdc on the relay control contacts which when operated, connects the 12vdc through to the water pump motor. It could also be loose wiring connections somewhere in the pump/relay circuit.


Attaching a general video on how a relay operates.


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