stevegoldberg1@gmail.com Report post Posted December 7, 2010 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
wa3vez Report post Posted December 8, 2010 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
stevegoldberg1@gmail.com Report post Posted December 9, 2010 Howard - thanks. This relay is a bit tough to get to, and I want to make sure I don't make things worse. Is the cap easy enough to remove and then later reseal? Any special tricks? Share this post Link to post Share on other sites
