w1ntersun Posted January 8, 2011 Share Posted January 8, 2011 Hi, I am in Spain at the moment and a fellow camper has a problem. He has a autotrail cheyanne 2003.With a sargent psu 2007. 240v into van of and all 240v works 12v from leisure batteries into van showing 13.9v and being charged control panel says system disabled engine running he has no 12v anywhere in van We have checked all fused and relays appear to be ok.we have stared and stopped the engine with no differencew to above. If he disconects the control panel. when he reconnects the lights come on for a fraction of a second then it reverts to as above we have emailed sargent electricals via there website but support is closed till monday. the email was returned as bad Any had a similar problem who could help please. We are near Cadiz if the is a local agent down here. Richatd Link to comment Share on other sites More sharing options...
Keithl Posted January 8, 2011 Share Posted January 8, 2011 Hi Richard, It sounds to me like his Split charge relay has stuck closed and consequently the panel constantly thinks the engine is running. The relay should be located near the vehicle battery under the bonnet (it is on our Merc based Cheyenne). There will probably be 2 relays, with the engine off unplug each one in turn and see if the 'system disabled' message goes away. If it does then he will need a new relay as without it he will have no split charge to the leisure battery. HTH or post the results. Keith. Link to comment Share on other sites More sharing options...
lookback Posted January 8, 2011 Share Posted January 8, 2011 Hi, For your information: Sargent Electrical Services Ltd. Unit 39, Tokenspire Business Park Beverley East Yorkshire HU17 0TB United Kingdom Phone 01482 881655 Fax 01482 678987 E-mail support@sargentltd.co.uk Ian Link to comment Share on other sites More sharing options...
Guest Tracker Posted January 8, 2011 Share Posted January 8, 2011 We had a similar problem and, after checking everything else, it eventually resulted in a new 'exchange' control panel from Sargents. If anyone on site has an identical setup you could try switching the control panels as final proof as they are very easy to remove and refit? I think Sargents will send to an overseas address for you but no doubt they will probably want a deposit pending return of the old unit. It can be done online but a phone call to them might be quicker? When ours went on the blink I jury rigged a 12v lead to feed the water pump direct from the leisure battery and we used site mains to run the heating and lighting and tv etc pro tem. This is the link to Sargent Tech help - or tel (UK) 01482 678981 if the www fails you. http://sargentshop.co.uk/Technical-Support Link to comment Share on other sites More sharing options...
Keithl Posted January 8, 2011 Share Posted January 8, 2011 Keithl - 2011-01-08 10:10 AM There will probably be 2 relays, with the engine off unplug each one in turn and see if the 'system disabled' message goes away. Richard, I've just looked at the wiring diagram for a 2003 Cheyenne and the relay with Brown/Blue wiring is the split charge relay and the other with Red/Yellow wiring is the fridge feed relay. If removing the Brown/Blue relay cures the problem then try 'borrowing' the fridge relay to get the electrics working but DO NOT put the duff relay into the fridge circuit as he may very quickly get a flat vehicle battery. He could then have a choice of charging leisure battery OR running fridge when driving. I suppose this depends on whether he is using EHU or not to keep leisure battery charged or needs his fridge on when driving. Keith. Link to comment Share on other sites More sharing options...
Rayjsj Posted January 8, 2011 Share Posted January 8, 2011 w1ntersun - 2011-01-08 8:04 AM Any had a similar problem who could help please. We are near Cadiz if the is a local agent down here. Richatd I doubt that Sargents will have any agents in Cadiz, best bet is to follow 'Trackers' link. Good luck ! Ray Link to comment Share on other sites More sharing options...
w1ntersun Posted January 8, 2011 Author Share Posted January 8, 2011 Thanks for all the comments and here is an update. Unplugged the control panel and cleaned the contacts and plugged back in and IT,s WORKING. Problem we have now is that the system only works if the 12v charger is switched on. As soon as the charger is switch off voltage goes down to zero. Even on hookup. Batteries show good voltage and don,t drop when the charger is off. but the habitation voltage does. Re the engine compartment relays. The engine has been off for a week when this fault started Its lovely and sunny here so we are having a glass of wine while we ponder over it Richard Link to comment Share on other sites More sharing options...
Keithl Posted January 8, 2011 Share Posted January 8, 2011 Richard, When you say 'Batteries show good voltage' how are you measuring them? If with a DVM across their terminals then am I right in assuming the control panel shows the leisure battery as Zero volts with the PSU charger turned off? Have you tried selecting the engine battery with the control panel? It's the button to the right of the On/Off if you're not sure and it's LED lights up red when selected to engine. What happens then to voltage readings? I'm starting to suspect that he may have lost the main power connection from the leisure battery to the PSU. Have you checked the fuse at the Leisure battery? It's a 20A in-line right by the battery. Again let us know how you get on and we'll see if we can help any more. Keith. Link to comment Share on other sites More sharing options...
w1ntersun Posted January 13, 2011 Author Share Posted January 13, 2011 At last found the fault a connector to the fuse on the battery was loosly crimped. When we pulled the battery out all appeared well but when we pushed the battery into the comparment it became loose. Thanks for all replies and he is now a happy camper Link to comment Share on other sites More sharing options...
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