Adri Water Tank Problem - Motorhome Forums, Motorhome Discussion, Motorhome Chat

User Tag List

LinkBack Thread Tools
post #1 of 3 (permalink) Old 11-08-2019, 19:22 Thread Starter
Junior Member
Join Date: Aug 2019
My Motorhome: I drive...
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Adri Water Tank Problem

Hi all, just bought an Adria 590 Matrix Access SG. Really well screwed together but on getting home it has a couple of faults. Firstly the water tank. On my older motorhome it was a simple fill up and drain by opening a tap. On the Adria again its fill the tank but on looking at the instructions the tank has three levels. Zero to dump the water, 20 litres or the full 110, After a good look at the instructions they said to lift the passenger cushions. The water tank is underneath and the extender pole with a handle on top is used to either open the dump valve to dump all the water or turn to 20 litres or full closed for 110 litres. Sadly when turning it to open it works fine, 20 litres works fine but drips a bit but it wont allow the tank to fully fill. No matter I turn it to close it just keeps dumping water out the dump valve if any more than 20litres.

The second problem is the control panel is lighting up the waste tank full indicator red.

Ok its nothing major and its under warrenty but wondered if anyone has similar or any advice on what I may be doing wrong.
Toffeethecat is offline  
Sponsored Links
post #2 of 3 (permalink) Old 11-08-2019, 19:55
Senior Member
Join Date: Jun 2007
Location: Belfast
My Motorhome: Hymer Exsis-i 504
Posts: 7,922
Thanks: 193
Thanked 409 Times in 389 Posts
Is your Truma boiler dump valve open by any chance? That would allow the water to escape. If it's been sitting on the dealer forecourt it was maybe opened for drainage n never closed again.

Your wonky display.... Try putting a few litres of really cheap coke in the waste tank n taking it for a roller coaster ride - maybe the sensor prongs are just gunged up. Or use vinegar water.

And welcome to the forum!

jiwawa is online now  
post #3 of 3 (permalink) Old 12-08-2019, 11:10
Senior Member
EJB's Avatar
Join Date: Aug 2007
Location: Suffolk (By choice)
My Motorhome: Burstner Nexxo t620G
Posts: 4,145
Thanks: 30
Thanked 128 Times in 118 Posts
Presumably a new valve assembly is called for ( in the fresh water tank!)?
If you have hand access into the tank find the level sensor and wipe it is wired, but not the pump obviously.....level indicators are notoriously inaccurate!
The Truma dump valve only dumps the 10 Ltrs in the hot water tank.
By adding the unnecessary 20Ltr level the manufacturers have just made a simple valve more complicated!

Jeans advice will clean the waste tank OK

I try and state simple facts in a nice way.

Last edited by EJB; 12-08-2019 at 11:15.
EJB is online now  

Quick Reply

Register Now

In order to be able to post messages on the Motorhome Forums, Motorhome Discussion, Motorhome Chat forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome