Truma 6E suspected leak ..... help please

Jul 5, 2013
7,449
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Tunbridge Wells
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26,797
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I have a truma 6E fitted to my 2008 Adria. On a rally at the weekend I noticed my Sureflow pump was switching on momentarily every so often. I also noticed a steady drip of water coming from underneath the motorhome, which looked to be dripping through from the floor above. On looking at it today I noticed water coming out from underneath of the truma - not a lot but a steady amount seems to be coming out. And the insulation cover on the underside seems very spongy. Not sure if this is being soaked up from leak elsewhere or coming from the unit itself.

My trouble is we are going to Lincoln on Thursday! Does this sound terminal for the unit or is there something I can check or adjust relatively easily please?
 
Jan 22, 2013
636
705
London SE
Funster No
24,385
MH
A class Adria vision I707
Exp
since 1971
Hi have you checked the thermo valve that dumps the water when the temps drop near freezing? Sometimes they don't seat properly and you get a constant drip from the overflow pipe underneath ,
 
Dec 21, 2011
3,461
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London
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19,230
MH
IH PVC
Exp
Since 2012
The "Thermo valve" should have a bit of pipe to take the water outside the van. It would not normally dump it onto the floor of the van.

The internal water tank is probably stainless steel so I suspect it would not have corroded through in six years. This late in the season I assume you have used it this summer at some time so it is probably also not frost damage from last winter.

So hopefully it is something simple like a loose connection (y)
 

biggsy

Free Member
Apr 1, 2012
25
10
Hull
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20,349
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Coachbuilt
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Since 2012
Recently had a similar problem. It turned out to be the water feed into the bottom of the boiler, which just needed a clockwise tweak by hand to tighten it up. For me, this cured the problem. It was a b*****r to get to, though, on our Chausson Allegro 97.
 
OP
peterc10
Jul 5, 2013
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IvorAntony & MikeD. Thanks but its not the frost valve, which is situated some way from the truma, and dumps the water onto the ground. I don't know if it is frost damage. I drained it all last winter. I first noticed some water on a trip in July, but we thought we had found that problem which was a loose filter on the pump. That seemed to cure it for a while, but now we are back with more water on the floor. It drains into our garage if we are pointing uphill.

Biggsy - I have checked the water feed connector and it feels dry.

Jay - you may be my saviour because I understand that a complete new boiler unit costs approaching £2,000 just to buy, let alone fit!! How old was yours when it went? Who was the warranty with - Adria or Truma please? Who did you get to repair it - the motorhome dealer or a truma specialist please? (Sorry for all the questions)
 

DP+JAY

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Mar 17, 2010
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Jay - you may be my saviour because I understand that a complete new boiler unit costs approaching £2,000 just to buy, let alone fit!! How old was yours when it went? Who was the warranty with - Adria or Truma please? Who did you get to repair it - the motorhome dealer or a truma specialist please? (Sorry for all the questions)
Ours is 2008 also (A660SP) & it was frost damage from the previous owner. The dealer repaired it.
I have tried dealing with truma in the past & they just refer you to their "agents", won't even quote prices for parts. I don't think it will be a quick fix, we had to wait weeks for the parts, so I fitted a valve into the boiler feed pipe so I could isolate it & still use the the van (including the heating) whilst waiting for the parts(new tank & jacket).

Johns Cross might be a good place for you to start if you don't have a warranty?
 
Last edited:

biggsy

Free Member
Apr 1, 2012
25
10
Hull
Funster No
20,349
MH
Coachbuilt
Exp
Since 2012
Peterc10, I should have added that the boiler would only leak in the period between switching on and reaching the set temperature. Presumably expansion filled whatever gap there was. It didn't leak when the boiler was switched off, or when it was running at full temperature. Might be worth another look?
 
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peterc10
Jul 5, 2013
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Peterc10, I should have added that the boiler would only leak in the period between switching on and reaching the set temperature. Presumably expansion filled whatever gap there was. It didn't leak when the boiler was switched off, or when it was running at full temperature. Might be worth another look?
I am a afraid that mine leaks whether the boiler is on or off
 
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peterc10
Jul 5, 2013
7,449
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Johns Cross might be a good place for you to start if you don't have a warranty?
Thanks - already spoken to them and I have it booked in for a look next week. But trying to avoid having to buy whole new boiler.
 

DP+JAY

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Mar 17, 2010
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They are truma service agents so should be able to fit a new tank( quite easy once the boiler is out).
Let us know how you get on, I'm curious to know the cost of the tank.
 
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peterc10
Jul 5, 2013
7,449
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As said I isolated the boiler from the supply, then opened the hot tap to release the pressure.
Would do that but we are off to Lincoln on Thursday. We both need our nice warm shower every morning. If I say to my wife there is no hot water she will tell me we ain't going. So at the moment I will just have to switch off the pump when I don't need it. And I will try your tip of releasing the pressure with a hot tap each time
They are truma service agents so should be able to fit a new tank( quite easy once the boiler is out).
Let us know how you get on, I'm curious to know the cost of the tank.
Did not realise that Johns Cross were Truma agents. I am trying to get the price of the tank from Southdown via the link you sent me.
 
Jun 5, 2012
631
413
ng219ep
Funster No
21,318
MH
coachbuilt
Exp
2007
stripped mine down when i blew it up [electric] took it out 3/4 hour stripped it mdown fitted 2 new [second hand] element presure checked 4 leaks re-fitted [bingo] 100.notes / loooks more like a connection hot/cold clip on i had a small leak [toilet paper] took of re seated ok
 

DP+JAY

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Mar 17, 2010
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Would do that but we are off to Lincoln on Thursday. We both need our nice warm shower every morning. If I say to my wife there is no hot water she will tell me we ain't going. So at the moment I will just have to switch off the pump when I don't need it. And I will try your tip of releasing the pressure with a hot tap each time
That should work, but with an isolation valve it means that all other functions (toilet flush etc.) work normally when hot water isnot needed. When it is, just open the valve &the hot water flows. We managed two weeks away, both showering every day.
 
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peterc10
Jul 5, 2013
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Tunbridge Wells
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Just thought I was give everybody an update. Johns Cross was very helpful, thanks to Glenn and Ian.

Ian is the truma expert and he kept me well informed of the problem, what they could do, and how much it would cost. It seems the water container had sprung a pin hole leak on the face that contains the fixing studs. Definitely not frost damage. The outcome was a replacement water tank. The parts came in quickly all except for one gasket, which took over a week to be delivered, and Johns Cross carried out the work as soon as they got the parts.

The tank itself cost £220 plus VAT and the whole bill including VAT came to £570. Eyewatering, but, given the work, I think it was a very fair price. The tank was a lot cheaper than Southdown quoted me to buy, and the whole job was a LOT cheaper than replacing the whole boiler which I though may have been needed.
 

DP+JAY

LIFE MEMBER
Mar 17, 2010
2,197
4,575
Cark, Cumbria
Funster No
10,674
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Overcab with Garage
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since 2007, 25 years tuggin before that.
Thanks for the info.
Glad it's sorted.
 
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