Leisure Battery Not Charging When Driving

 
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advis
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Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #1
Hi, I have discovered my leisure battery is not charging whilst driving, it will charge when hooked up to electricity,i have checked fuse beside leisure battery and it is fine,driving a 2006 Adria Vision 707sg, any help would really be great, thanks.
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #2
Is your fridge working whilst you are driving?
advis
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #3
Yes fridge is working , but it is draining my leisure battery
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #4
Quote by advis

Yes fridge is working , but it is draining my leisure battery


Usually the fault behind this problem a break in the feed from the engine battery to the leisure battery charging and fridge.
When the engine starts the relay is pulled in connecting the leisure system to the engine battery. In normal operation, power is sent to both the fridge and leisure battery. Think of the relay as a Y connection with the bottom of the Y connected to the engine battery and the two tops connected to the fridge and the leisure battery.
If there is a break (a loose wire or blown fuse) in the bottom of the Y once the relay is activated current can flow directly from the leisure battery to the fridge (the fridge doesn't know its power is not coming from the engine battery) without any input from the engine battery, hence the fridge flattening the leisure battery.
advis
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #5
Thanks very much for your reply, my biggest problem now is to try and find the relay, I've looked all over but cannot find it, found a few under the bonnet but there for spot lights etch.
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #6
Quote by advis

Thanks very much for your reply, my biggest problem now is to try and find the relay, I've looked all over but cannot find it, found a few under the bonnet but there for spot lights etch.


There should be a connection from the engine battery going to the leisure side. Check for any blown fuses or broken connections in the vicinity of the engine battery.
Try and find the supply coming for the engine battery to the relay when you find the relay, it should be permanently live. The relay may not be a separate unit, in modern vans, they are often included as part of the PCB which manage all the stuff.
If it's an integrated CPB look for a heavy wire coming to a connection marked + BAT 1 or something similar, which would indicate it's the direct live supply from the engine side.
+BAT 2 or similar would be the live connection to the leisure battery
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #7
I've traced 2 red cables, one thick around 8mm and one around 5mm from the starter battery all the way back to this blue box schaudt ebl 225,but still no sign of a relay,just wondering is the switch over done through this box???
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #8
My split charge relay is inside the schaudt control box / charger,
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 26.04.2019  ·  #9
Quote by advis

I've traced 2 red cables, one thick around 8mm and one around 5mm from the starter battery all the way back to this blue box schaudt ebl 225,but still no sign of a relay,just wondering is the switch over done through this box???


Just guessing here but the thick cable is probably the main supply which should permanently live. The thin one probably the ignition signal which is only live when the engine is running and triggers the relay which connects the permanently live supply to all the 12v stuff in the habitation area, fridge, charger, lights, etc..
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 27.04.2019  ·  #10
latest is i've found a little blue box in the starter battery box, about 50mm x 50mm , 2 wires on one side - and + signs and one wire on the other side that says +.I have tested these three wires with the engine running and not running and they have no power whatsoever. the make on this box is Nordelettronica ,Itallian writing, ingresso alternatore sotto chiave on one side and uscita alternatore controllata on the other side. I have tried to upload a picture of it but i was unable to do so.
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Leisure Battery Not Charging When Driving

 ·  Posted: 28.04.2019  ·  #11
Quote by advis

latest is i've found a little blue box in the starter battery box, about 50mm x 50mm , 2 wires on one side - and + signs and one wire on the other side that says +.I have tested these three wires with the engine running and not running and they have no power whatsoever. the make on this box is Nordelettronica ,Itallian writing, ingresso alternatore sotto chiave on one side and uscita alternatore controllata on the other side. I have tried to upload a picture of it but i was unable to do so.

You are heading in the right direction.

Translation.
ingresso alternatore sotto chiave
alternator entry under key.
uscita alternatore controllata
Controlled alternator output

Nordelettronica Srl
Viale delle INDUSTRIE, 6/a
31018 ALBINA di GAIARINE (TV), Italy
Tel. +39 0434 75 94 20
Fax. +39 0434 75 46 20
info@nordelettronica.it

SOLUTIONS FOR MOTORHOME & CARAVAN ... Battery Charger;; Control panels ;; Distribution Modules in low voltage;; Lighting ...
advis
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 10.05.2019  ·  #12
This Little blue box is what is known as a vsr (voltage sensor relay) and when the voltage from the battery reaches 13.7v it turns it on and then the leisure battery starts chargeing.Made a phone call to pat horan motorhomes and they could not have been more helpful. Thanks to them and thanks to all who helped here on this forum.
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 10.05.2019  ·  #13
Glad that you got to the end of your riddle.
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Leisure Battery Not Charging When Driving

 ·  Posted: 11.05.2019  ·  #14
Quote by advis

This Little blue box is what is known as a vsr (voltage sensor relay) and when the voltage from the battery reaches 13.7v it turns it on and then the leisure battery starts chargeing.Made a phone call to pat horan motorhomes and they could not have been more helpful. Thanks to them and thanks to all who helped here on this forum.


Did you get the charging solved?
Did you have to rel place the controller
advis
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 16.05.2019  ·  #15
Yes, I replaced the relay and the battery is now charging,
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 16.05.2019  ·  #16
Always nice to get feedback on the results. It all adds to the information available on the forum
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 16.05.2019  ·  #17
Quote by advis

Yes, I replaced the relay and the battery is now charging,


Good stuff and thanks for the response
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 16.05.2019  ·  #18
Great stuff!
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Re: Leisure Battery Not Charging When Driving

 ·  Posted: 17.05.2019  ·  #19
Interesting, when I turned on my ignition the leisure battery relay (already replaced) used to click in and out repeatedly until the engine fired. I fitted a new drive battery this week and the clicking stopped.
Maybe the leisure battery relay is an indication of drive battery health.
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