Irene Posted June 7, 2012 Report Share Posted June 7, 2012 When we switch the engine off all the electrics go off,has anyone got any ideas what the problem could be? Link to comment Share on other sites More sharing options...
steve hayes Posted June 7, 2012 Report Share Posted June 7, 2012 When we switch the engine off all the electrics go off,has anyone got any ideas what the problem could be? Battery Isolator switched off ? Link to comment Share on other sites More sharing options...
frangar Posted June 7, 2012 Report Share Posted June 7, 2012 Either totally flat batteries or a faulty(or off) isolator or maybe a blown main fuse meaning that all the domestic power is being supplied by the alternator.....Hard to diagnose online!! Have you got any more info such as has it always done it...what type of boat (narrowboat or outboard powered cruiser etc)... Cheers Gareth Link to comment Share on other sites More sharing options...
alan_fincher Posted June 7, 2012 Report Share Posted June 7, 2012 Do you mean absolutely nothing works in any way at all, unless the engine is running ? You are, presumably, able to restart the engine, though ? In that case at least your starter battery must be good, and connected. It sounds like your domestic battery bank could be completely flat ?? How many alternators have you, and (if only one), do you know what kind of "split charging" your boat has. That is does it use a relay, diodes, or just a big swich with OFF-1-2-Both on it ? Do you have one, (usually red), alternator warning light - does it go out as it should, once the engine is running ? Link to comment Share on other sites More sharing options...
Chalky Posted June 7, 2012 Report Share Posted June 7, 2012 If you've got domestic power with the engine running you're probably running the whole lot off the alternator not the batteries. When the alternator stops turning then you've got no power. I'd be checking things like the battery voltages, looking for any big fuse on the battery supply or checking that I'd not turned the battery isolator off. I'd also check for damaged / loose / broken wires / terminals in the battery / alternator / fusebox circuit and that there's water in the batteries. Chances are it'll be something obvious. That's assuming that you're not on a land line. If you have knocked the batteries of whilst the alternator is running there's the possibility you could have load dumped the electrical system Link to comment Share on other sites More sharing options...
Smelly Posted June 7, 2012 Report Share Posted June 7, 2012 Where are you at the mo? Link to comment Share on other sites More sharing options...
Irene Posted June 7, 2012 Author Report Share Posted June 7, 2012 Either totally flat batteries or a faulty(or off) isolator or maybe a blown main fuse meaning that all the domestic power is being supplied by the alternator.....Hard to diagnose online!! Have you got any more info such as has it always done it...what type of boat (narrowboat or outboard powered cruiser etc)... Cheers Gareth Its a 40ft narrow boat,with 3 new liesure battries the only battery that is still working is the starter one which is on a differant isolter switch Link to comment Share on other sites More sharing options...
frangar Posted June 7, 2012 Report Share Posted June 7, 2012 Well its pointing to either a main fuse from the domestic batteries or the domestic isolator.....have you tried tracing the cable from the domestic batts back to the alternator? Do you have any means of checking the voltage in domestic batteries? Cheers Gareth Link to comment Share on other sites More sharing options...
Chalky Posted June 7, 2012 Report Share Posted June 7, 2012 Does the engine control panel have one or two alternator warning lights? Do it / they both go out when the engine is running? Do you have a volt meter / battery gauge and if you do what's the voltage of the domestic batteries. Link to comment Share on other sites More sharing options...
Irene Posted June 7, 2012 Author Report Share Posted June 7, 2012 Where are you at the mo? Sale on The Bridgewater If you've got domestic power with the engine running you're probably running the whole lot off the alternator not the batteries. When the alternator stops turning then you've got no power. I'd be checking things like the battery voltages, looking for any big fuse on the battery supply or checking that I'd not turned the battery isolator off. I'd also check for damaged / loose / broken wires / terminals in the battery / alternator / fusebox circuit and that there's water in the batteries. Chances are it'll be something obvious. That's assuming that you're not on a land line. If you have knocked the batteries of whilst the alternator is running there's the possibility you could have load dumped the electrical system Thanks for your input will go through everything when go on board again Link to comment Share on other sites More sharing options...
Eeyore Posted June 7, 2012 Report Share Posted June 7, 2012 When we switch the engine off all the electrics go off,has anyone got any ideas what the problem could be? Hello Irene PM sent Steve Link to comment Share on other sites More sharing options...
Keeping Up Posted June 7, 2012 Report Share Posted June 7, 2012 Isolator switches are not very reliable. With the engine switched off, try putting a screwdriver across the terminals of the domestic isolator switch for a few seconds. Link to comment Share on other sites More sharing options...
DeanS Posted June 7, 2012 Report Share Posted June 7, 2012 Sale on The Bridgewater Are you heading towards or away from Manchester/Castlefield Basin...? Link to comment Share on other sites More sharing options...
Irene Posted June 8, 2012 Author Report Share Posted June 8, 2012 Are you heading towards or away from Manchester/Castlefield Basin...? We are on our moorings at Sale Link to comment Share on other sites More sharing options...
Irene Posted June 14, 2012 Author Report Share Posted June 14, 2012 (edited) When we switch the engine off all the electrics go off,has anyone got any ideas what the problem could be? problem solved!one battery dead!which ran hot and blew a 130amp mega fuse!good job that fuse was there or we would have had a bigger problem! many thanks Eeyore(Steve)for your help Edited June 14, 2012 by Irene Link to comment Share on other sites More sharing options...
Guest Posted June 14, 2012 Report Share Posted June 14, 2012 problem solved!one battery dead!which ran hot and blew a 130amp mega fuse!good job that fuse was there or we would have had a bigger problem! many thanks Eeyore(Steve)for your help Glad you are sorted - we are just wading through getting our battery and charger issue sorted...fun isn't it... Link to comment Share on other sites More sharing options...
Eeyore Posted June 15, 2012 Report Share Posted June 15, 2012 problem solved!one battery dead!which ran hot and blew a 130amp mega fuse!good job that fuse was there or we would have had a bigger problem! many thanks Eeyore(Steve)for your help Thank you Irene Its one to remember; not all faulty batteries smell bad, make fizzing sounds or are wet on top. Multimeter for your birthday? Steve (Eeyore) Link to comment Share on other sites More sharing options...
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