hughman Posted May 13, 2013 Author Share Posted May 13, 2013 Thanks Robinhood - just the ticket. I'll try it tomorrow. Cheers, Hugh Robinhood - 2013-05-13 9:50 PM hughman - 2013-05-13 9:13 PM BTW, how do you remove the control panel to check connections? I'm assuming my system is gas only - it's a Combi 4, and I haven't found a lower control unit like Mel shows. The attached pic shows how the panel is fitted. The frame is a "click" fit that can be removed by careful use of a thin knife under the edge. The mounting screws should then be obvious (and if you're going to remove it you'll have to hope there is enough slack in the cable). Link to comment Share on other sites More sharing options...
Derek Uzzell Posted May 14, 2013 Share Posted May 14, 2013 hughman - 2013-05-13 7:29 PM ...Don't know about 'secumotion' till I get the Possl manual in English - my printer's up the creek just now :-( It should be straightforward for you to tell whether your Possl has the latest Truma "CS" type of regulator or the older "Secumotion/DriveSafe" one, as they are visually different. Both types are shown here: http://www.thetrumacentre.co.uk/magento/truma/tma/truma-products/secumotion.html?order=rank&dir=asc But (as already been said) if all the hob-burners will operate simultaneously at maximum output, the regulator (whatever type it happens to be) is OK. The start-up procedure involves the heater's gas-burner fan beginning to run, the gas-supply valve opening and the gas igniters firing. If the heater 'recognises' that the gas has not lit, it will shut itself down. If there's no (or insufficient) gas the heater will shut down, but it will also shut down if the igniters fail to operate. You may be able to hear the igniters firing (I certainly can with my Truma C-Series heater), so that might help with your diagnosis. Link to comment Share on other sites More sharing options...
Robinhood Posted May 14, 2013 Share Posted May 14, 2013 ....I've just realised that the fault code file I have is probably small enough to attach. If you have flashing lights at the boiler end, this may help in any diagnosis. (I think it was posted on forum by someone else, and I would acknowledge them, but can't remember which forum and who ;-) ) Truma Combi fault codes.pdf Link to comment Share on other sites More sharing options...
goldi Posted May 14, 2013 Share Posted May 14, 2013 Morning all, I had asimilar problem which turned out to be afailing regulator. Changed it to acavagna with cavagna filter. I now works superb. norm Adria twin Link to comment Share on other sites More sharing options...
Guest JudgeMental Posted May 14, 2013 Share Posted May 14, 2013 over the years I have had problems with 3 heating systems, they seem the most unreliable component due to complexity I guess... 1 ALDE system: needed new PCB as camper imported from Sweden this was done at my house my mobil ALDE engineer under warranty Ist Truma: failed on 230v it was a loose connection in mains box next to boiler 2nd truma: the common securemotion fault. replaced while touring by 3rd party dealer, 200€ repaid by dealer on my return obviously before ripping the controls apart on a one week old camper, best start at gas supply and as that OK, and leisure batteries have enough charge and a bit of cable waggling don't help...call the free engineer? Link to comment Share on other sites More sharing options...
hughman Posted May 14, 2013 Author Share Posted May 14, 2013 So, current state of play: 1. It has the Crash Sensor system as standard. As cooker and fridge work, not a gas problem. 2. Wiggled and reconnected cables on boiler where movable. 3. Extracted control unit and unplugged and replaced cable. Result - no change :'( I'll try checking fault code with Robinhood's list, but it's going to have to be engineer callout I think. Thanks for all the advice -I'll let you know when/if it gets sorted. Link to comment Share on other sites More sharing options...
Guest JudgeMental Posted May 14, 2013 Share Posted May 14, 2013 I'm always right (you will get used to it) :D Link to comment Share on other sites More sharing options...
hughman Posted May 14, 2013 Author Share Posted May 14, 2013 JudgeMental - 2013-05-14 3:57 PM I'm always right (you will get used to it) :D That's what the Pope always said and look what happened to him :-D Link to comment Share on other sites More sharing options...
hughman Posted May 16, 2013 Author Share Posted May 16, 2013 So, having tested various connections with a multimeter, I tried the boiler again - no joy. I checked the fault code using Robinhood's list and, discounting gas flow problems, it comes up as needing a new pcb. I rang Truma here who said they don't cover non-UK supplied kit (a battle to be fought later then, if necessary), so I tried calling the German dealer again, with the fault code. Result; new pcb to be posted to me - they have it in stock and it's apparently not a difficult job to replace. Fingers crossed still, but we may yet be able to go to Skye with some heating! Many thanks for help. Link to comment Share on other sites More sharing options...
Guest JudgeMental Posted May 16, 2013 Share Posted May 16, 2013 Not from the Truma chap I spoke to...They are happy to pay for warranty work once you find an accommodating dealer. So I called one......These people who I spoke to happy to have a look, ask for Keran. They are the first and nearest dealer to you that I called. The situation is this: Truma do not have their own engineers and rely on dealers to do work in house. its just a matter of finding a nice accommodating one:-D . Freeborn Motorhomes Trained Service Dealers Guildford Rd, Goldalming GU7 3BU Surrey Telefon: Keran on 01483 423555 Link to comment Share on other sites More sharing options...
hughman Posted May 16, 2013 Author Share Posted May 16, 2013 You've obviously got more charm than me Eddie >:-( Link to comment Share on other sites More sharing options...
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