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Hello, thanks for posting
The first thing we need to verify is thre condition of the 12 volt auxiliary battery, it has to be fully charged or close to it, no less than 11.8 volts. These batteries can take quite a while to charge back up. Once the battery is fully charged power the system down by removing the negative cable for about a minute, reconnect and see if thing s return back to normal. If the battery can not be successfully recharged it will need to be replaced.