Rover 40A load Terminal issues

I am trying to run a  Dometic 50 qt fridge off a renogy rover 40 mppt and every time I turn on the load it trips to load short fault (E4). Other loads are fine when I connect them, the fault is instant and I don't get to turn on the unit before it states the fault. The max draw is 7 amps  on the fridge and at the moment it is the only load on the controller. This fridge is wired in correctly, I'm sorta annoyed at the lack of information in the manual. Is there something I'm missing here. 


setup:
2 50watt solar panels (matched pair) 
renogy rover 40amp mppt 
33ah deep cycle sla
dometic cfx-50us fridge 


    

Load Short Circuit? wired correctly?

wonder what the inrush current is?

have you tried to operate directly from the battery?

33ah is very small for such a big load, 100 watts aint much either for a 7.8 A x 12v = 94 watt cooler

Did you ever figure out why the controller was throwing a short circuit code? I'm experiencing a similar situation and like you said there is nothing to help explain why. I've run the load direct off the battery and I know the polarity is correct. The only thing I can think of is that the controller senses a big initial draw and automatically throws the code. So I was thinking I may need to install a capacitor. I'd love to know what you did to resolve the issue.

I guess we are talking about a DC freezer?? Also I agree with bird that's not much of a battery...... Also those manuals are useless....

I’m posting here hoping that rabird will see it and provide some insight re an E4 Error Code on my Rover 40 MPPT.

I built a solar electric system for my Sprinter van 3 months ago, and it has been working flawlessly. Now I’m on my first road trip, and my MPPT started shutting down every 15 minutes or so, throwing an E4 error code. When I reset it, it works fine, but then inevitably shuts down and throws up the same E4 code. Sometimes it waits 15 minutes to shut down, and sometimes it shuts down immediately after I reset the MPPT.

According to the manual, E4 either means that the system is overloaded, or there is a load short.

The load on my system never exceeds 5 amps, so that rules out an overload (defined as > 20 amps). I have been sitting here observing after resetting,

I am flummoxed as to what a load short could be. It’s wired from the MPPT to the BlueSea Systems blade fuse box with clean, good 4 AWG connections, and all of my endpoints are properly fused (with no fuse having ever blown).

Any insight would be greatly appreciated! I’m in a tight spot here. Thank you!

no idea, have you disconnected the load and if so does it continue to happen?

 Yep he seen it... Much more info needed for him to help.... Like are you driving when you get the code etc???

Same issue here. If I hook my load directly to battery, it works fine. Trying to run it off the load terminals of the controller immediately returns an E4 (short circuit) error. Question, Do you need an isolated negative(ground) circuit? I have both the battery ground and the load ground attached to the chassis.

Ok now I'm understanding the E4 problem..... I'm surprised you guys are missing it...

Same e4 issue. What's the fix?

I've been having this issue as well and I believe it`s caused by the inrush of the fridge that would be roughly around 21A, the CC is rated at 20A output. That being said the only solution I`ve found in my research is a gentleman that installed a capacitor (35v 3500uf) on his load terminals. How to go about this when it comes to size etc.. I`m still undergoing that research. If anybody finds the fix, please post it up, several of us are still looking for the solution.

^^^^^ OK bird your the DC man help these people out.........^^^^^^^

I am having the same issue. Even if I turn the circuit breaker to my small fridge (danfoss 35 compressor), I still get the E4 error. I have both the battery and my load circuits grounded to the chassis. Does the Rover require an isolated ground circuit between the battery and the load? Running everything off the battery works fine. I'd like to use the load terminals off of the Rover 40 controller to get better statistics on load/charge usage.

Try without grounding, ie run a wire back to the controller and don't ground the controller or loads.
The rover should handle up to 20A for loads but seems lots of issues by many operating loads.