House battery not charging - Yamaha 242LS

[Dadco]

For some reason my house battery has stopped charging. I had to emergency parallel it after getting an AUX low voltage of 11.2v. Paralleling it is a temporary fix, but it stands to reason I may need to troubleshoot the relay that switches the charging from one battery to the other. Does anyone have experience troubleshooting this issue?
Thanks in advance

 

[FSH 210 Sport]

For some reason my house battery has stopped charging. I had to emergency parallel it after getting an AUX low voltage of 11.2v. Paralleling it is a temporary fix, but it stands to reason I may need to troubleshoot the relay that switches the charging from one battery to the other. Does anyone have experience troubleshooting this issue?
Thanks in advance

I’m assuming you have a BEP marine DVSR two battery switch?

If so, then this DVSR does not charge one battery or another, the start battery will charge first by virtue of it being connected to the alternator outputs from the engines.

First make sure that the little black wire coming from the BEP battery switch is connected to a battery ground.
Next take a voltage read off of the start and house battery.
Take a battery charger and put it on the start battery, when the voltage on the start battery reaches 13.4 Volts DC the DVSR light should come on, the DVSR should close the paralleling switch and the house battery voltage should start to climb.

 

[Ronnie]

If the dvsr is bad you can replace it alone for around $100 but I suggest you also have both batteries tested before you buy any replacement parts or batteries.

 

[F.M.]

Might also check out this thread about modifying the DVSR to charge both batteries independently when using a smart charger. Post #4

https://jetboaters.net/threads/fsh-210-and-noco-5x2-charger.37059/https://jetboaters.net/threads/fsh-210-and-noco-5x2-charger.37059/

 

[Dadco]

Ok, appreciate the advice.
My boat is a 2013, so it has a VSR not the DVSR.
Replaced both batteries less than 6 months ago, so maybe it could be a loose connection. When I purchased the boat (ten years ago), I had the dealer move the batteries back toward the stern, so checking all the battery connections is a little more difficult without pulling everything out. If it is a loose connection, would the batteries still parallel like they do?

I will pull the batteries forward today, check all connections and place the start battery on a charge to see if it switches like you say. I ran the boat yesterday and the start battery voltage was 14.1 with AUX voltage dropping to 11.3. At that point I paralleled them again to recharge the house battery. This is why I think it may be the VSR.

 

[FSH 210 Sport]

Ok, appreciate the advice.
My boat is a 2013, so it has a VSR not the DVSR.
Replaced both batteries less than 6 months ago, so maybe it could be a loose connection. When I purchased the boat (ten years ago), I had the dealer move the batteries back toward the stern, so checking all the battery connections is a little more difficult without pulling everything out. If it is a loose connection, would the batteries still parallel like they do?

I will pull the batteries forward today, check all connections and place the start battery on a charge to see if it switches like you say. I ran the boat yesterday and the start battery voltage was 14.1 with AUX voltage dropping to 11.3. At that point I paralleled them again to recharge the house battery. This is why I think it may be the VSR.

Can you be more specific about the VSR please ?

 

[Dadco]

Mine looks like this one. Picture found online

 

[FSH 210 Sport]

Mine looks like this one. Picture found online

Okay cool! Is it in a four cluster thingie that has two switches in it that looks like this?

 

[FSH 210 Sport]

Ok, appreciate the advice.
My boat is a 2013, so it has a VSR not the DVSR.
Replaced both batteries less than 6 months ago, so maybe it could be a loose connection. When I purchased the boat (ten years ago), I had the dealer move the batteries back toward the stern, so checking all the battery connections is a little more difficult without pulling everything out. If it is a loose connection, would the batteries still parallel like they do?

I will pull the batteries forward today, check all connections and place the start battery on a charge to see if it switches like you say. I ran the boat yesterday and the start battery voltage was 14.1 with AUX voltage dropping to 11.3. At that point I paralleled them again to recharge the house battery. This is why I think it may be the VSR.

Be sure that little black wire is not broken or disconnected… without that the VSR will not work.

 

[Dadco]

Be sure that little black wire is not broken or disconnected… without that the VSR will not work.

Got tied up today so didn't get to pull out the batteries to check connections. Will definitely get to it tomorrow and let you know. Thanks for the help

 

[FSH 210 Sport]

Got tied up today so didn't get to pull out the batteries to check connections. Will definitely get to it tomorrow and let you know. Thanks for the help

Right on.. good luck! I hope that it is something simple.

 

[Dadco]

Right on.. good luck! I hope that it is something simple.

Ok, I stand corrected. I thought I only had a VSR, it is actually a DVSR like you posted. I checked all connections and ran the starboard engine on the hose while watching the voltages. After start, start battery 14.1 v and Aux shows 11.3. Aux still not charging so I paralleled them again and got 12.8 and 12.3 on Aux. I then unparalleled them and got the stereo on to see if Aux would charge, it did not. The red light on the DVSR never came on. Here are pics of my setup...this pick was when I had them paralleled

 

[FSH 210 Sport]

Did you make sure that the little black wire was properly grounded?

In one picture I can see the black wire leaving the DVSR and the other I cannot see it, perhaps just camera angle, but still something to verify. If the dvsr is bad, you can probably just replace the module, if not the whole switch assembly.

 

[Dadco]

Did you make sure that the little black wire was properly grounded?

In one picture I can see the black wire leaving the DVSR and the other I cannot see it, perhaps just camera angle, but still something to verify. If the dvsr is bad, you can probably just replace the module, if not the whole switch assembly.

Yes, it's grounded.
Ok, so I guess I will call the dealer about a new DVSR. Does anyone know if this is a generic or Yamaha specific item? It's funny, I looked through the whole service manual and supplemental service manual and they don't even mention a DVSR or battery hookup...

 

[Bottom Bracket]

Pull the dsvr thingus and take post an image of the backside.
Sometimes they get modified.
Any extra switches on the dash?

 

[Dadco]

Did you make sure that the little black wire was properly grounded?

In one picture I can see the black wire leaving the DVSR and the other I cannot see it, perhaps just camera angle, but still something to verify. If the dvsr is bad, you can probably just replace the module, if not the whole switch assembly.

Pull the dsvr thingus and take post an image of the backside.
Sometimes they get modified.
Any extra switches on the dash?

So, I bit the bullet and bought a new DVSR off Amazon with one day shipping. Installed it an hour ago and ran an engine on the hose. Everything working fine now, thankfully.

 

[FSH 210 Sport]

So, I bit the bullet and bought a new DVSR off Amazon with one day shipping. Installed it an hour ago and ran an engine on the hose. Everything working fine now, thankfully.

Great! Things break over time… as long as it is all good now. Be sure an fully charge your house battery.

 

[Martin Flores]

Okay cool! Is it in a four cluster thingie that has two switches in it that looks like this?

View attachment 215238

Can a failing dvsr generate a false overheating warning on one engine of my 2019 ar240?

 

[Martin Flores]

Can a failing dvsr generate a false overheating warning on one engine of my 2019 ar240?

Because the DVSR failure provoked My house battery hasn’t been well charged
So that issue could be provoking overheating warnings on my boat?

 

[FSH 210 Sport]

I doubt it. Do you have an onboard charger? Or do you charge the battery when it is off the water with a portable charger? If not that is why your house battery is not charged well.

As far as overheat alarms go, please provide more details.
Is your boat used in salt water? If so have have you been flushing the engines with a Salt Away product ?
Is there water coming out of the Pilot water outlets?
When does the overheat alarm come in? Idle, cruising, running fast, on the hose? We have seen members report over heat in all those conditions.
How many hours on the boat?
Are you the original owner?