![]() ![]() ![]() So, it was clear converter wasn’t functioning. I also checked that the two 30A reverse polarity fuses were OK - if blown the battery would be isolated from the power center and converter charger. The output voltage from the Parallax converter, when functioning, should read 13.6V, not 12.8V. Next, the Victron ‘state of charge‘ battery monitor I installed in our Casita showed a voltage of just 12.8V, which is the normal full charge reading for our Casita AGM 12V house battery after a full day of on-the-road charging from our tow vehicle. I verified the AC 120V outlets were live, and the fridge had automatically switched over to AC operation, so I knew the converter had AC 120V power. Normally, I hear the buzzing noise of the DC 12V converter cooling fans running when connected to shore power. It’s always good to have a secondary backup.įirst, when I plugged into AC 120V shore power the converter was silent. Fortunately, our solar panels kept the battery charged to serve the onboard 12V system for that road trip. Our 12V converter probably died while our Casita was parked in its home berth connected to shore power between road trips, and I didn’t notice it. As many have repeated the same experience before us, we arrived at our destination campground on the first day of our road trip, parked, connected to shore power, and the DC 12V power supply was dead on arrival.
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