elibedarn Report post Posted February 18, 2022 No 12 volt house power when disconnected from shore power. Everything works when plugged in to power. What should I check first? Share this post Link to post Share on other sites
frank.bergamo Report post Posted February 18, 2022 Is your inverter on, if it is check breakers on inverter and inverter circuit breaker box. Hope this helps. Share this post Link to post Share on other sites
elibedarn Report post Posted February 18, 2022 1 hour ago, frank.bergamo said: Is your inverter on, if it is check breakers on inverter and inverter circuit breaker box. Hope this helps. Thank you for responding Frank. New converter installed yesterday. May be a breaker on it. No 12 volt fuses bad. Will check it further on Saturday. Share this post Link to post Share on other sites
mailman Report post Posted February 18, 2022 Salesman switch start at the battery then fuse panel than a 12 volt service Does the frig work when off shore power? Tim Share this post Link to post Share on other sites
elibedarn Report post Posted February 18, 2022 The pictures shows a green wire used in lieu of black or red from converter to hot side of 12volt panel. I didn't catch this and reversed the wiring, green to negative rather than hot side. Wondering if that caused 12 volt issue. With shore power all is fine through the converter. Nothing without shore power. Back to thinking. Thumbing through the electric forum to see if anything there. Share this post Link to post Share on other sites
elibedarn Report post Posted February 18, 2022 1 minute ago, mailman said: Salesman switch start at the battery then fuse panel than a 12 volt service Does the frig work when off shore power? Tim Yes. On auto and working on 12 volt. Thank you for asking. Share this post Link to post Share on other sites
rayin Report post Posted February 22, 2022 Reversed wiring blew a fuse somewhere between inverter/charger and battery bank. Share this post Link to post Share on other sites
rossboyer Report post Posted February 22, 2022 There should a very large fuse (150-300amp) in the positive line from batteries before it connects to the inverter. Share this post Link to post Share on other sites
richard5933 Report post Posted February 22, 2022 Have you checked all the fuses on your converter since you discovered the reversed wiring? What are the voltage readings at the battery bank AND at the converter both when it's plugged in and on shore power as well as after a while not plugged in? It would help to know if the converter is charging, and by how much. Also would be helpful to know if the batteries are actually accepting the charge. My guess is that something is keeping the batteries from accepting the charge, which could be a bad battery or a blown fuse on the battery side. Since you have 12v when plugged in I'm assuming that your converter is outputting enough DC power to make things work, and that your batteries either aren't getting that output or can't make use of it. Or, as mentioned above, you have a switch turned off somewhere. Share this post Link to post Share on other sites
manholt Report post Posted February 22, 2022 Sure would help to know the make & model of your coach! Salesman switch, bad cell in a battery or a bad ground connection on battery side come to mind. Share this post Link to post Share on other sites
f430040 Report post Posted February 23, 2022 On 2/17/2022 at 9:25 PM, elibedarn said: Yes. On auto and working on 12 volt. Thank you for asking. If the fridge is working, you have 12-volt power into the coach. What - exactly - is not working? On 2/21/2022 at 8:19 PM, rossboyer said: There should a very large fuse (150-300amp) in the positive line from batteries before it connects to the inverter. The inverter has nothing to do with 12 volt power in the coach. An inverter takes 12 volts DC and produces 110 volts AC. And if the fridge is working, there is 12-volt power in the coach. Share this post Link to post Share on other sites
rossboyer Report post Posted February 23, 2022 9 hours ago, f430040 said: If the fridge is working, you have 12-volt power into the coach. What - exactly - is not working? The inverter has nothing to do with 12 volt power in the coach. An inverter takes 12 volts DC and produces 110 volts AC. And if the fridge is working, there is 12-volt power in the coach. I have to disagree. There is a relay inside the inverter to bypass inverting to allow shore power to pass through to one or two circuits that have breakers in the inverter. Check to be sure one of those isn't tripped and needs reset. The other breaker may be the one that feeds the refrigerator 120v. These breakers may be on the side and not easily seen. The 12vdc is provided by the converter function in the dual function inverter. Share this post Link to post Share on other sites
mailman Report post Posted February 23, 2022 OK LETS GET TO BASICs Start with disabling the 110 volts system disconnect device Start with the 12 volt system like the old days of no 110 volts. Chase the 12 volt system down and see what works. This would be normal operation. FUSES RELAYS CONNECTIONS The standard operating of all is control by 12 volts , than we add our toys equipment lights ETC You must deal with one system at a time. When you verify the 12 system complete And all is fine than and only than reinstall the 110 volt system and check its operation. Like me and Carl (manholt) think start at the basics. Tim the Mailman Share this post Link to post Share on other sites
