VSR problem

[andydavy]

I think I have a problem with my VSR

I have standard set up of starter battery and house battery connected through VSR. both batteries have voltmeters on them

The starter battery shows 14.6 v when engine is running but the vsr never seems to switch to charging the house battery which has now dropped to 11.6v.

Is this likely to be a faulty VSR?

 

[PaulRainbow]

Faulty VSR or wiring. Check all connections and any fuses. What make of VSR ?

 

[ghostlymoron]

What charges the house battery? You could switch the vsr to prioritize it to see what difference it makes but, as said, it sounds like the vsr is faulty.

 

[jwfrary]

Don't forget to check the smallish negative connection to the VSR as it won't work without it and are perhaps a little easier to overlook.

 

[VicS]

Also
Check that the house battery voltmeter is reading correctly

 

[forelle541]

Mine went a month ago, would not charge house battery unless I gave it a donk with a pair of grips. Then it would charge both. I had a spare as it had played up before but that was a loose connection to the house battery, the nut on the back of the VSR has vibrated loose over the years. But not this time. It was as if there was a sticky switch in there. Anyway replaced it and all is now well.

 

[William_H]

You could try connecting a wire across the large terminals of the VSR. This should bypass the VSR and most likely get voltage on house battery to come up. If it doesn't you have a failure of fuse or wiring. If it does fix then yopu have a failure of the VSR itself (give it a bash) or of the wiring to operate it. Check the negative as said. ol'will