Rewiring Switch for Solar Pump

I have a solar pump I put together myself. Since I am new to solar power, and electrical work in general, I ordered a charge controller that was not designed to be left outside. So that I could keep using it, I put it inside a plastic bin, and since fiddling with it becomes more difficult that way, I installed a toggle switch that controls power to the pump. However, turning off the switch seems to make the charge controller think that the pump short-circuited (code E04) or the battery is over-voltage (code E02). I always have to manually dismiss E04, usually both of these errors, every time I use the pump. If I get rid of the load connections to the charge controller, and connect the switch directly to the battery instead, will that solve my problem? I think I could make a three-way connection between the negative wires for the pump, battery, and converter, so that I don't have to use either of the load terminals on the charge controller at all. Notice the E04 error on the charge controller. It is not actually connected to the solar panel or pump in this image. I plan to paint the container a light color. submitted by /u/UnderBridg [link] [comments]

Mar 2, 2025 - 20:33

I have a solar pump I put together myself. Since I am new to solar power, and electrical work in general, I ordered a charge controller that was not designed to be left outside.

So that I could keep using it, I put it inside a plastic bin, and since fiddling with it becomes more difficult that way, I installed a toggle switch that controls power to the pump.

However, turning off the switch seems to make the charge controller think that the pump short-circuited (code E04) or the battery is over-voltage (code E02). I always have to manually dismiss E04, usually both of these errors, every time I use the pump.

If I get rid of the load connections to the charge controller, and connect the switch directly to the battery instead, will that solve my problem?

I think I could make a three-way connection between the negative wires for the pump, battery, and converter, so that I don't have to use either of the load terminals on the charge controller at all.

Notice the E04 error on the charge controller. It is not actually connected to the solar panel or pump in this image. I plan to paint the container a light color.

submitted by /u/UnderBridg
[link] [comments]