ACR Failure

[NorthernFocus]

Has anyone experienced any ACR failures? The one between my no 1 and 2 batteries stays latched in sometimes even when the engine is not running. Started acting this way during our trip last week. Intermittent problem now but I assume it's belly up.

 

[SGIDAVE]

Has anyone experienced any ACR failures? The one between my no 1 and 2 batteries stays latched in sometimes even when the engine is not running. Started acting this way during our trip last week. Intermittent problem now but I assume it's belly up.

Hello Dan,

Are you talking about Blue Seas #7610 ACR like this?

By "latched in" do you mean closed or 'combine' the two batteries together?

If so, the ACR is supposed to stay closed or combined until the voltage drops to between 12.35-12.75. It's time dependent on the voltage differential which is why there is a range. Thus, even with the engine off and no other charge source applied, it's possible the ACR will appropriately stay 'combine' for a while.

You can connect an LED to one of the spade connectors at the bottom of the ACR (near where the ground is now connected) allowing you to monitor remotely the status of the ACR. An LED like this

If your LED is ON, then the ACR is closed or combined. Maybe you are already doing this. It makes it much easier to know what the ACRs are doing (or NOT doing). All this and more info are availaable on the Blue Sea webpage here (https://www.bluesea.com/products/7610/S ... 4V_DC_120A)

dave

 

[NorthernFocus]

Thanks for the reply, Dave. You gave me more to think about with the threshold setting. Up till now the ACRs have opened (separated the batteries) whenever the engine is shut down. I've never timed how long it takes before they open but definitely every time I've ever started the engine they have been open. During this trip when I started the engine after several hours the no.1 and 2 batteries were still connected. I suppose it's possible that the condition of the batteries has improved and it's simply taking longer for those two batteries to drop below the threshold that makes the ACR switch. I'd like for that to be the case. But you gave me something to think about. I suppose I could come up with a simple test...

 

[LADYBUG TOO]

Dan,

Blue Sea Systems has a trouble shooting chart on their site. They also stand behind their ACR and replaced mine at no charge to me when it failed. It is an easy swap out.

Pat
Ladybug, Too

 

[DBBRanger]

Dan,

Blue Sea Systems........ replaced mine at no charge to me when it failed.

Pat
Ladybug, Too

Me too. They even replaced one on my 2008 R25 even though the failure was caused by the Ranger factory.

 

[NorthernFocus]

Thanks, guys. To my knowledge the ACR in question is original equipment with my 2008 boat. But it's worth a try. If Blue Sea wants to replace it who am I to argue 🙂