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Subject Topic: External pump permanently running
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Message posted by jeff juke on 27/3/2014 at 8:19pm
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Will do a search on the web to see what i can suggest Tony

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Message posted by TonyPC on 27/3/2014 at 8:25pm
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Many thanks, I've had my head glued to a screen over the last week searching for answers but I guess I'm searching incorrectly

Message posted by Bill Terry on 27/3/2014 at 9:13pm
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Thinking about it, It cant be the 3 way switch, All this does is power to the pumps, which you have,If the pump is on constant, It has to be a micro, switch,It you had a pressure switch I thought it be that, not being set right, but you dont have a pressure switch do you?

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Message posted by jeff juke on 27/3/2014 at 9:25pm
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If no water is coming from the taps check to see if the water heater has water in it by removing the plug.
No water or very little says the pressure switch has debris in it like undissolved sterilizer,

, a pin prick in the water line ( usually caused by freezing of the pipes over winter ) could be the cause . Check all your van for wet patches, I had this problem after picking a new van up from the dealers, it turned out to be the metal hose under the kitchen sink punctured
from another site...

2. If you have a pressure switch system there are a further two possibilities.
2.1 The pressure switch is set at too high a pressure, hence the pump is having to stay on to try to get the pressure up to a level where it will switch off. If this is the case, turn the pressure adjuster on the top of the switch anticlockwise until it switches off. I would guess that the problem lies in this area.
2.2 If you are in the pressure switch scenario, it is possible that there is a leak in the delivery side of the system. This would stop the system getting up to pressure and the pump would stay on. I would look at the non-return valve just where the water comes in from outside. Sometimes they get stuck after a period of being left dry or a piece of grit or whatever is stuck in the valve making it stay open. Failing that, it is a case of running the pump and seeing if there is a leak in the system, possible all that is needed is a quarter turn on a Jubilee clip somewhere.

Hope this helps as ive copied the answers..



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Message posted by jeff juke on 27/3/2014 at 9:30pm
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Forgot to add it could be the non return valve also.

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Message posted by TonyPC on 27/3/2014 at 10:11pm
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Water is coming from the taps fine and my water heater is fine, it's filling right up as is my onboard tank. There is no visible signs of leaks. But I have left the system full with water Tonight.
I will check tomorrow evening to see if any has escaped.
The crystal compact inlet had no NRV. But the ultra flow Conversion I have fitted needed one so I have added one. The pump is constantly running on both inlets. I don't think my van has a pressure switch system. I can't find any info in the manuals about one.
Can the micro switch in a tap work ok with the internal pump but fail with the external pump does anybody know?
I will put the external pump on tomorrow evening and listen at the taps for the micro switch's. I could hear them clearly with no pump plugged in.

Message posted by alpiner on 28/3/2014 at 6:24am
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Could this help.
link

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Message posted by TonyPC on 31/3/2014 at 7:26pm
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Update time for everybody who was good enough to offer advice.
All the microswitch's are ok. The inboard tank is ok. Everything is filling up and emptying ok.i have no leaks anywhere, the water flow and pressure is good. I think my problem lies with the electrics anywhere from the switch to the back of the water inlet. Should this be an easy fault for an electrician to test? If I can't fix it myself I don't mind paying for a professional but I certainly don't want to be ripped off.
Thanks again for everybody's advice, having fixed several problems with advice from here, I've been on a steep learning curve, but electrics may be a step to far.

Message posted by pentti on 30/9/2014 at 12:17am
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Hi
I have exactly the same fault with my recently purchased cameo 495 2003. Did anyone find out the answer to this problem as its driving me crazy! Thanks

Message posted by freckles63 on 30/9/2014 at 8:08am
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We also have this problem with our 2001 Swift Archway Barnwell, the only way to stop pump from running was to turn it off from switch, at least we could get water but had to remember to turn off or have the pump constantly running, OH thinks the micro switches may be faulty but haven't got around to changing them yet.

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