Jump to content
Sign in to follow this  
stevegoldberg1@gmail.com

Battery Isolator Relay

Recommended Posts

I need help from someone who knows!!

2003 Fleetwood American Eagle. That year they used a Power Gear battery control center. My house batteries will charge on shore power and with the generator, but not from engine power. Earlier this year I replaced the circuit board ($455) because there was some corrosion, but the problem is back.

With the engine off, I measure 12.9V across both terminals of the relay. after 15 seconds, the relay shuts (or opens) and I get 12.9v at one relay, but only 6.9V on the other terminal. There is a harness going to the circuit board, and when I disconnect that, the relay opens (or closes), and I then get 12.9V across both terminals, but then 15 seconds later, the relay again closes (opens?) and the 6.9V comes back to the s\2nd terminal. So I have had folks tell me I need a new relay. I called Power Gear. They agreed it was probably a relay issue, not the circuit board. A new relay from Power Gear costs $680!!!. There are other 200A relays on the market for RVs ranging from $50 to $200. Don't they all do the same thing? Power Gear says that the relay is activated whenever the current goes below 13.3V. Isn't that controlled by the circuit board?

Do I really need to spend almost $700 for a relay? Please help.........

Share this post


Link to post
Share on other sites

The usual failure mode for relay's is burned or dirty contacts. Before I spent that kind of money I would remove the relay, open the cover and clean the contacts with an emory board. Use the smooth side. Your symptoms scream dirty contacts.

Howard

Share this post


Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
Sign in to follow this  

×
×
  • Create New...