When i switch my water pump on its pumping out the overflow do you have any thoughts on why this may be

[HH1962]

When I switch my water pump on the water pumps out of the overflow , do you have any thoughts on what has caused this ?

 

[Two on Tour]

When I switch my water pump on the water pumps out of the overflow , do you have any thoughts on what has caused this ?

It could be your boiler dump valve that has opened if you have had a cold night where you are.

 

[DerryW]

Ditto Two on tour. Almost certainly what’s happened

 

[pappajohn]

Agree as above.
Auto dump valve next to the boiler will open around 4 or 5 degree and will dump water when pump is turned on depending if the pump is before or after the valve.
It may have a blue lever on top

 

[Landy Andy]

Auto or manual dump valve open.

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[David and Sally]

As above.

 

[denisejoe]

If you turn all power of it will open the drain for the water heater so when you switch on the pump will do it’s job

 

[Howard H]

I had the same problem last year on our last day abroad,when I got home I changed the water pump an easy job . That solved the problem I guess the pump was over pressurising the water system and the boiler drain was only exit .

 

[HH1962]

It could be your boiler dump valve that has opened if you have had a cold night where you are.

Hi thank you yes it has been a cold night so will check that is there a reset ot should it just do it naturally ?

 

[Two on Tour]

Hi thank you yes it has been a cold night so will check that is there a reset ot should it just do it naturally ?

If it has dumped automatically, then it will need resetting.
This thread might be some help to you going forward.

How do you stop truma dump valve from opening in cold

Have a 2012 hobby Toscana 650. Found it has the usual truma dump valve prob. How do I stop from dumping water in minus deg so I can fill tank

www.motorhomefun.co.uk

You're probably looking for something like this.

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[HH1962]

Many thanks for your help so far its late now so will take a look and see if I can locate a reset

 

[HH1962]

Good morning im struggling to locate the valve I have an Adria Matrix 670 DC 2022 ive looked under the seating where the adie boiler is and the inlet for the fresh water does anyone have any other ideas ??

Many thanks in advance

 

[Manic]

Does the boiler have an expansion/ breather vent , that can leak when operating tap.
Possible different boiler but an example

 

[1967bowesj]

Good morning im struggling to locate the valve I have an Adria Matrix 670 DC 2022 ive looked under the seating where the adie boiler is and the inlet for the fresh water does anyone have any other ideas ??

Many thanks in advance

When you run the pump and water comes out just note where it is in relation to the inside of van. Stop the pump and the drain off should be in the location you noted, should be then easy to find

 

[1967bowesj]

Looking at your model van, I’d say that the valve could be in the circled locker