![]() ![]() I suppose I should take it to an RV repair station but really don't want to spend $1000 finding out I had it hooked up backwards.WFCO 55 AMP Power Converter Troubleshooting Not being a real good electrician, I get confused about what I am doing and checking and what I should be looking for. As it is under warranty, I have requested a replacement from WFCO but am trying to figure out why this is happening. Now I never blow the fuses in the fuse panel, just the converter itself. It started doing the same thing over again. I bought a new one, hooked it up and it worked well up to 9-19, 2014. At this point I am not running anything but the overhead lights and the TV. When I replace them, they will instantly blowĪgain. When I check out the inverter, the fan isn't running and the 2 40 amp fuses in the unit itself are blown. First symptom is when hocked up to a 50 amp land line, the lights in the trailer will brighten then dim. If you charge the batteries with a good external charger to bring them back to life, you can use the WFCO to charge after that as the amperage will be lower.īlown to me means, it will no longer convert. With your two expensive GC batteries, I highly recommend a better, intelligent charge.ĮDIT - if your batteries are really dead (ie less than 10V while at rest) then the current from the WFCO will be really high (as you measured) - tripping the autoreset circuit breaker integral with the WFCO. If it is the converter (mis)behaving, I learned in my research while replacing my brother in law's WFCO 8900 that Progressive Dynamics has a 4600 series direct replacement converter, and paired with the charge Wizard Pendant, turns the charger into a 4 stage "intelligent" charger. Good advice from Dan above to measure voltage at contacts throughout the circuit with a digital Volt-Ohm meter. So at 65% you are probably reading 12.3 to 12.5V ( reference link to open circuit "state of charge" vs voltage). You do not say if you have a true battery monitor that measures cummulative current withdrawn (ie amphours). Keep in mind the OEM battery monitor is measuring voltage. If voltage falls below 105 V AC (I think), some converters will shut down.Īnd don't overlook the possibility that one of your batteries has a shorted cell. You might check your shore power connections and receptacle. It may be that the clicking is from the converter itself shutting off. If the voltage drops on the converter side of the breaker when the breaker trips, the problem may not be with the breaker. If there's a problem with the mini-breaker, it may trip, but the voltage at the top terminal (going to the converter) should not drop when the breaker trips. Next step might be to measure voltage at the top contact of the 12V mini-breaker. If it clicks and voltage drops, the breaker is tripping for some reason. When being charged by the power converter, it should read > 13 V DC at the battery. Check the voltage with shore power disconnected. If it's auto, and it's tripping, you should be able to measure the voltage at the battery terminals and watch the voltage go up and down. It's usually one with a manual reset, but it might have been replaced with an auto-reset breaker at some point. There is a 12V mini-circuit breaker near the battery that is in between the battery and the power converter. Thanks for any light anyone can shed (if you'll pardon the bad pun.). I can plug in a regular battery charger directly to the batteries, but it doesn't seem like I should have to do that. Does the WFCO converter not limit the current when charging the battery? Or is it supposed to and my converter is just not operating properly? As it stands, I cannot dry camp for any length of time and then plug in to charge my batteries with the converter (which is why I bought the GC batteries to begin with!). I'm assuming that the breaker is heating up when the high-current is going through it, tripping, then resetting when it cools, starting the cycle again. It was at 65% capacity or so when I checked the current draw, I saw the current go to around 17-18 amps (charging), at which time it reversed and went to zero for a few seconds, then repeated. I went inside the coach to see what the battery monitor was showing. As I was working around the unit, I heard a slight clicking noise I found it to be one of the little circuit breakers by the battery pack. I had a trip coming up so I went to charge the batteries by plugging in the coach to shore power. I had the coach sitting at home, not plugged in, so it was just slowly draining the batteries. I have the WFCO 8900 series converter and two GC batteries in series. There is one thing I've noticed that puzzles me hopefully some of the experts out there can chime in. Still in my first full season in my Sundance XLT, so I'm learning a lot.
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