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Subject Topic: pressure switch Post Reply Post New Topic
PersonRuth292
14/9/2016 at 6:55pm
 Location: SCOTLAND
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hi I have a coachman amara, does anyone know where the pressure switch is? the pump keeps running every few minutes and think this may need adjusted

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RUTH


Personnaturlist123
14/9/2016 at 8:40pm
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The pressure switch is usually mounted on floor within two feet of the fresh water inlet, usually in locker under seating.
I think you have a leak as the pressure backs off by leaking so pump cuts in to bring pressure back up. check no taps or shower are dripping, if okay look for leak if you have push in connectors or check over flow from heater (top tee piece) only takes piece of dirt less than pinhead to stop ball valve from closing after     de-aerating.


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VangoMan02
14/9/2016 at 10:17pm
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I had the same issue last year and it turned out to be the non return valve was faulty.
I fitted a new one and adjusted the pressure switch, not had any problems since.

Not saying it is the problem but possibly another option to check.

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It is a wise man who has something to say.
It is a fool who has to say something.


Personjeff juke
15/9/2016 at 12:36pm
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Common problem is the seals on the pump leaking check that you dont have a leak where the pump plugs in.

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Animals have feelings..

JEFF................


Personchrisn7
17/9/2016 at 12:34am
 Location: West Yorkshire
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When you find the pressure switch it may be the type with a wheel on the top.
-Turn this clockwise down as far as it will go, without forcing it.
-Turn on a cold tap, and the pump will start, then turn off - this will leave the pump running
-Turn the wheel on the switch anti clock now until the pump stops
-Turn a further half turn, and this should be about right.

From this position, you may need to adjust slightly one way or the other, to find a good position. Remember that the hot water will take longer to pressurise, so expect a longer pump run time.

If you switch from 230v to 12v, you may need to repeat the above.
Once the system is operating correctly, if the pump comes on unexpectedly, then as mentioned, check for dripping taps, or leaking connections - think of it as a warning system.


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PersonRuth292
17/9/2016 at 4:04pm
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hi. I found the pressure switch and adjusted pressure but still no joy, I have put on a new pump and still the same, the voltage on the battery looks fine sitting at 13 volts, can't see any visible leak of water any suggestions?

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RUTH


PersonRuth292
17/9/2016 at 4:05pm
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hi what does this vavlve look like?

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RUTH


PersonRuth292
17/9/2016 at 4:10pm
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hi thanks have tried it and is still doing the same, the saga goes on

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RUTH


PersonRuth292
17/9/2016 at 4:12pm
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hi there is a bit of water that is coming out of the pump connection on the van, after I unplug the pump, could this be the cause and what do I do?
thanks

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RUTH


Personchrisn7
18/9/2016 at 1:21am
 Location: West Yorkshire
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If water is dribbling even slightly from the exterior connector block to the van, this is your problem. Even a very small leak causes the pressure within the van to drop, which in turn starts the pump and so the cycle continues until you run out of water, after which the pump will run dry for a while until it burns out.

If the block is a Whale type it is sealed to the van with 2 thin o rings, which need regular replacement, and lubrication to ease fitting - you must push the block fully in so that the cover flap can be folded down to horizontal.


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Personjeff juke
18/9/2016 at 11:21am
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Another common problem is on the pump again where the tubing from the pump its self to the block comes loose and needs pushed back on and the clip tightened.

-------------
Animals have feelings..

JEFF................


PersonRuth292
20/9/2016 at 6:38am
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hi its the truma fitting , many thanks for your advice, I will try and get that changed.

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RUTH


Personbirdman101
20/9/2016 at 7:49am
 Location: Milton Keynes
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If you have a trauma water heater check the red plastic valve at the top with a clear plastic tube going down through the floor.See if this is dribbling water.If so this is why it is loosing pressure and pump cutting in.Other than that is would replace non return valve.


PersonRuth292
04/11/2016 at 6:41pm
 Location: SCOTLAND
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hi just like to say that the pressure switch needed replaced.thanks for all comments

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RUTH



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