Happijac TC jacks stop, no light
2007 NL 10'2QRR. tag says 2425# dry, but I beleive wet and equipment is closer to 3500# (haven't checked). HJ system with wired remote and 4500/4150 jacks. When loading the camper from the ground ...
Forum Discussion
bkenobi wrote:
It's not the controller toming out. I've seen that (if you run the jacks for 1-2 minutes straight or set the remote down for a while). This issue is the power to the board I beleive because the light on the remote is off.
I replaced all of the breakers last night so I'm hoping it will fix things. As an engineer, I was curious about the condition of the old breakers. I openned the old ones up and found that the 40A used for the jacks had signs of significant history of arcing at the contact as well as lots of corrosion on the poles and a bit of surface corrosion inside the housing. With all that corrosion, the current seen across the contact could have increased the draw from the jacks above the 40A rating (guessing as I'm an ME not EE).
Your theory is good. Corrosion creates resistance which in turn causes voltage drop. Lower voltage on motors causes more current draw, aggravating the problem. Not only that, the heat created by the resistance directly affects thermal breakers if that’s what kind it is.
