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Yet Another Truma Problem


drummond
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I've bought a caravan with a Truma water heater, the latter is about 3 years old. The first time, it worked on 220v. One week later, the heater fused instantly, both in the caravan and at the site post.

 

I've filled it to the brim before connecting it- I've got the original instruction book.

 

The same has now happened at home.

 

I can't work this out; the instructions don't have this in them.

 

Second problem is that I can't get it to work on gas. The gas is apparently going in to the unit, but there is nothing on the switch to the front- no green or red light, even.

 

Battery is new, lights work on 12v and 220v, gas works to the cooker.

 

Caravan was completely rebuilt by the manufacturers three years ago, but they are now moribund- they don't have anyone working for them.

 

Tim

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The electric fault sounds like the element has failed and is shorting to earth - not an uncommon fault and easily remedied.

 

No idea about the gas fault, sorry.

 

Tony

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Thanks, Tony. I've ordered a replacement. No idea as to the gas. ...

 

Tim

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We also have a Truma but a 6002EH. On two occasions, with or without water in the boiler, it's tripped itself out when on EHU with no lights on the dials. First time it was a case of replacing the glass fuse in the mains box on the side of the boiler and the second required a simple push of the overheat "red" button, again on the mains box on the side of the boiler. We had the elements checked for continuity and they were ok.

 

Not saying this is the same problem as yours, you'll probably have a different boiler, but could be worth checking the fuse and pushing the reset.

 

HTH.

2019 Adria Adora Thames

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We also have a Truma but a 6002EH. On two occasions, with or without water in the boiler, it's tripped itself out when on EHU with no lights on the dials. First time it was a case of replacing the glass fuse in the mains box on the side of the boiler and the second required a simple push of the overheat "red" button, again on the mains box on the side of the boiler. We had the elements checked for continuity and they were ok.

 

Not saying this is the same problem as yours, you'll probably have a different boiler, but could be worth checking the fuse and pushing the reset.

 

HTH.

Your 6002EH is nothing like the Ultrastore being discussed, and there is no red reset button.

 

As for the original questions, the electric side sounds like the element has failed as has been stated.

On the gas side I presume you removed the outside cover first?

If yes, then when you try to start it you should hear a clunk followed by rapid ticking as the igniter tries to light it.

If as you say there are no lights on the control switch, check the control cable is firmly connected, if that is, then it could be the glass 1. 6a fuse on the PCB or a failed PCB.

Edited by Brecon
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If as you say there are no lights on the control switch, check the control cable is firmly connected, if that is, then it could be the glass 1. 6a fuse on the PCB or a failed PCB.

. ........or a lack of 12v supply. .....or the PCB may have become detached from its location at the bottom.

For any additional information or advice please have a look on my website. .....

www. thecaravanmedic-swindon. co. uk

 

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Silly question but there will be a Gas "manifold" somewhere central (Mine's under the sink) with a series of (red?) taps to switch on and off the gas to the individual appliances ( Water Heater, Heater, Cooker, Fridge) could the water heater supply be switched off?

 

( I've been caught out by this myself!!)

 

Jim

Edited by JamesF

"keep your motor running"

caravan: Avondale Avocet ( 2006) - tow car: Renault Laguna (2007) - play car: Mercedes 300SL (1988)

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Brecon/Caravanmedic, the internal 1. 6a fuse has gone- looks ok, but there's no current across it. I presume that the lack of anything is down to the fuse failing.

 

JamesF, it's an elderly (1977) Carlight- wot manifold!!!

 

Previously, it had a gas water heater above the sink, but the lack of spares (in 2000) caused the previous owners to revert to the "boiling kettle" method, until they had it refurbished in 2010. They had it repaired at a cost of £18400, by Carlight. They never used it as the husband died. The gas fire (SB1800) is useless, rusted out. The oven does not function, as the whole burner is detached. The fridge does not work on gas, either. Hey ho!

 

Tim

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I've replaced the fuse and it now works- many thanks! T|he electric element will be next.

 

Tim

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Brecon/Caravanmedic, the internal 1. 6a fuse has gone- looks ok, but there's no current across it. I presume that the lack of anything is down to the fuse failing.

 

JamesF, it's an elderly (1977) Carlight- wot manifold!!!

 

Previously, it had a gas water heater above the sink, but the lack of spares (in 2000) caused the previous owners to revert to the "boiling kettle" method, until they had it refurbished in 2010. They had it repaired at a cost of £18400, by Carlight. They never used it as the husband died. The gas fire (SB1800) is useless, rusted out. The oven does not function, as the whole burner is detached. The fridge does not work on gas, either. Hey ho!

 

Tim

Hi Tim

 

Ah! light dawns!!!

 

In which case it might be useful if you're going to replace the various busted gas appliances to fit a "gas manifold" ( don't know what it's correct name is but I guess someone will come along who does :) ) to give you better isolation of the gas supply.

 

Glad the fault was "just a cheap fuse" but it still takes ages to find !

 

Cheers

 

Jim

"keep your motor running"

caravan: Avondale Avocet ( 2006) - tow car: Renault Laguna (2007) - play car: Mercedes 300SL (1988)

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"Just a cheap fuse" but I didn't know! Thanks to all. ..but now it goes faulty within 30 seconds and it's not in the instructions. Boiler is full, gas is going in, first click and it's lighting, and 15 seconds later it has a fault.

 

I've tried it 15 times, leaving it 5 mins each time, and I can't say Í'm too popular at home now!

 

Tim

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I know it has been said, but just to be safe, have you removed the cover from outside the caravan for the gas flew. If not then that will be why it is going out.

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Then the thermos thing or whatever they call it, (you know the bit that sits in the flame of the pilot light) has moved and isn't detecting the heat of the flame so it thinks it has gone out, so shutting of the gas. I hope that makes sence, I am sure someone else can explained it better.

 

Ps. .. Sorry forget to say it could be.

Edited by Digger_07
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If the water heater has not been used for a considerable time it can take several attempts to get it going again as damp will affect the operation.

Getting to the burner and flame recognition probe is not a DIY job,it is a specialist job and requires the whole heater coming out.

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Oh, good, Brecon! I spoke to Arc Systems about it, (I've a fire at Arc) and he said that in effect the Truma was a load of rubbish (he put it more politely than that) and that I should go back to the Carver.

 

It's not my £500, as I bought it with the water heater in there, but when it needs professional help for something so small I feel that reinstating the Carver might be the way forward.

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Everyone to there opinion but Caver no long make water heaters as far as I am aware. You would be better sticking with what you have, after all we are all just guessing as to what the problem is.

 

For someone in the trade to tell you it is rubbish without giving his expert reasons why, in my opinion is wrong, thousands of caravans have Truma water heaters fitted that work fine and give no trouble, so is the opinion of one person correct. At the end of the day it is up to you. If it was me I would have it check out before I made any decision.

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No, Digger07, Gary gave his reasons as to why he thought it was rubbish!

 

I know that Carver don't make water heaters any more, but there's a lot on ebay, some of the parts are new, eg burners. My thoughts are that it's better to get a reliable heater than pay an open ended cheque to somebody when next year it's going to be the same.

 

But, all the same, I am looking for advice and I take your point.

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There is absolutely nothing wrong with Truma Ultrastore water heaters normally.

 

However, being unused on gas, or unused for a prolonged period of time does cause problems, not just for Truma items, but any gas burning appliance.

 

It is worth while to run ALL gas appliances for about 20 to 30 minutes every time the van is used, even if after you switch to electric, just to keep the burners clean and the gas valves operating correctly.

 

Get a mobile engineer to give the heater a service, then use it .

 

On a personal level I have a Truma Ultrastore in y van for the last 10 years and it works perfectly, every time, but I DO use it on gas every time I use the van and every month when it is in storage.

Edited by Brecon
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No, Digger07, Gary gave his reasons as to why he thought it was rubbish!

 

I know that Carver don't make water heaters any more, but there's a lot on ebay, some of the parts are new, eg burners. My thoughts are that it's better to get a reliable heater than pay an open ended cheque to somebody when next year it's going to be the same.

 

But, all the same, I am looking for advice and I take your point.

Okay Drummond, that's fine, as long as you are happy with what he said and this is the path you want to take, then I see no problem with that. I wish you luck with it and that you get it sorted soon.

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