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Well, finally a meaningful update. So for me, following the troubleshooting diagrams, locating and correcting a very loose/disconnection at the positive side of the external 110 inlet, did not restore 110 AC power to the slide, stereo, tongue motor, lights, water pump and other accessories, nor 12V via the left side of the power distribution center.
After I exchanged email with Sean at WFCO service, he concluded from what I described the inverter probably had failed and need to be replaced.
Since I was still concerned about the converter and trying to explain related electrical issues, and needed to ask what the backlog might be on a replacement inverter, I kept calling back, until 8 days ago when Larry from WFCO was helpful. So kudos to Larry. He said he was out in the field for the three weeks, so that answering calls got way behind, especially the toll free line.
Although he thought the inverter could’ve shut down because the battery didn’t have enough voltage, he suggested that I check the converter’s 110 power, per the troubleshooting flow chart. He agreed that if the converter did not get 110V to the left side of the power distribution panel when connected to shore power, that the converter could be bad.
He explained that symptoms of a failing converter could’ve resulted in the clicking and flashing LED ceiling lights.
He explained that the converter does have a pass-through function, so 110 power could energize some of the trailer even without a battery, which I verified at his request by disconnecting the battery cables again.
Pass though of 110 without a working 12V converter section should not power my 12V refrigerator, which ran initially, then only intermittently before the flashing/clicking lights and COO inverter code. He said converter pass-through issues could result from excessive amps through the converter, but if my converter did not have transmit power to the 110 side and make 12 volts with the battery disconnected, it would have failed. “Everything should run from shore power if the converter is working.”
When I asked how stocks were running for the 5110 inverter and the 8955 converter, he said that a newer fully lithium-charger capable converters (new 8955 LIT) was back ordered, but less than it was when it could take months to resupply all older models. He said the dealer would have to check with warranty support for availability (it sounded like it could still be weeks). He believed they do have PC boards which can be installed in an earlier 8955 like mine to allow lithium batteries to be charged to 100%. (I should not need that because my solar system, if eventually working, should get a lithium battery to maximum charge.)
The good news is he reinforced the fact that they stand behind their a two-year AFCO warranty from purchase of the trailer.
Mr. Pederson at Forest River, however, replied that I would need to take it to the dealer service tech for evaluation prior to any submission of a warranty claim.
Since I took it to my dealer yesterday, my preliminary information from the tech is that I was mistaken about a blown cartridge fuse in the converter, which is hidden under a white cover and isn’t visible without removing said cover. We will see what they say.
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