We had it working at the start, when we first bought it. It was bought at the same time as our first battery before everything else was set up. After we added the second leisure battery (same type connected in parallel) and connected the batteries to an earthing point the voltage sensitive relay has stopped working.
Right now everything is connected and working except the relay. It clicks on, stays on for a second then clicks off. Then repeats over and over. Think the problem might be the earthing point but not sure? (It’s connected to the chassis, as is the leisure battery - have scratched the paint away)
Anyone know common causes for the relay to click on and off continuously? Appreciate any info/experience you have!
Honestly, you don’t really need a VSR unless you’re wiring the batteries in series. I don’t know who told you that you needed one. But I am an electrician and can confirm you don’t need one. If you wanna run a 5000w inverter then perhaps you’d want one. But you can live very comfortably off of a 3000w inverter. Lemme know if you have any questions!
Hi there! Thank you so much for your response. Sorry, maybe I should have said I am using the VSR for split charging! Is it safe to wire the VSR earth to the negative of the leisure battery or does it need its own earthing point on the chassis?
No question is a stupid one when you need answers.
Can you explain what you mean by split charging?
If the leisure battery is grounded, grounding the VSR to it should be fine.
You might wish to double check that your leisure batteries are indeed wired in parallel and not accidentally in series. If the VSR detected 24 volts, it would definitely click back off.
In my experience, check and make Shure that the batteries are in fact running in series and not parallel. The added voltage would trigger a shut down. Also if you can ground all your components separately do it. It’s just one more added level of redundancy. Hope that this helps you out. Happy travels.
Beeps.
I had the exact same experience in my VW T5 and may be due to the fact that you probably have a smart alternator fitted to the vehicle…these alternators are designed to shut down when the starting battery is charged to minimise excess emissions.
They are a pretty standard fit on most European vehicles from about 2010 onwards and one way you can tell if it is a smart alternator is by loosening the drive belt and checking to see if the alternator pulley spins one way but not the other. if this is the case, then the only way around it is to install a DC-DC charger.
