Despite current to and from Orion Smart DC to DC charger, no lights or bluetooth connection

There is power going into the 24 volt dc to dc isolated Orion Smart charger at 25.42v. 25.42 volts is going out of the charger, as well. However, there are no lights on, blue or green, and when I open Victron Connect on my iPhone it is not connecting to the charger. I have, twice, followed the instructions to get it going: removing the remote connector with the wire bridge and then installing the inputs (I assume with power going into the charger) and then open up Victron Connect. I get nothing after doing that. I have followed all the rules and steps in troubleshooting about what to do and what not to do. I turned my Phone off and on and even deleted the app and reinstalled it. Still nothing. Just not pairing. Any ideas what else I could try or any ideas about what might be causing it? Thanks so much.

Peter Knowlton

Exactly the same on in and out ?

Makes me wonder.

Without this the unit is dead.

No, it’s just not charging. The unit is powered without the remote bridge, that’s why the manual is written the way that it is. Removal of the remote bridge allows the unit to be programmed before it starts charging, to ensure that it doesn’t start charging (with possibly dangerously incorrect voltages) immediately upon connection.

I think this is just your battery voltage - it’s not coming “out” of the charger, it’s just vBatt measured at the terminals. Post a few photos of the setup, with the connections at the charger shown as well as the connections to each battery.

Thanks. I will post some photos tomorrow when I go to the boat. Thanks.

Here are photos of the set up. Order from the 48v motor battery bank is as follows: 48v to 24v converter (light on). Not a bluetooth unit. 24v to 24v converter/charger. Smart unit/bluetooth and no lights, blue or green. 24v to 12v converter (light on). Not a bluetooth unit.

25.42v at the fuse after the 24v to 24v converter charger outlet but, no lights are on and I cannot connect to (or detect) this unit thru the Victon app.

Any advice where to go from here appreciated. Thanks.

Peter

Do i see a jumper in the green terminal of the 2424 unit ?

How high is the voltage at the input ?

Yes. There is a jumper. The voltage in is the same as out, 25.42v.

Never…

Take a 50w lightbulb and check both sides to ground, and check the voltages on the disconnected plus wires.

Ok. Will try it. Thanks. Have a question though, What will the 50w bulb show that you can’t get with multimeter?

I knew I was going to get myself in trouble saying “same” “25.42v”. That is the voltage in. The voltage out I can’t remember now and I didn’t write it down because it wasn’t much different. Was + or - .5v difference. Was only a little lie.

The bulb will show if its just parasitic voltage or really “power”

Leads to wrong conclusions…

Got it. Thanks.

Thanks so much your help. I did the light test as you said. Wasn’t 50w. Was this 12v led light that apparently also works with 24v.

Here are results.

48v to 24v converter
The light does not go on at the 24v outlet of the 48v to 24v converter. However, the green light is on. Not a bluetooth device.

24v dc to dc charger
The light comes on at the “in” and “out” ports of the fuse block after the 24v charger outlet. This is a bluetooth device. The green and blue lights are off and I cannot detect this device through the app.

Thanks again.

Peter

Sorry, these will work with a couple of milliAmps.

I really meant a 50w bulb…

Oh. Ok. Will need to get one or make one and will report back. Thanks.

Ok. Did the 50w light bulb test and here are results.

The 24v output, and fuse, of the 48v to 24v converter lights up when the negative lead is connected to negative output screw on the unit. Does not light up when negative lead is connected to 24v negative busbar.

The 24v input, of the 24v DC to DC charger converter, lights up when negative lead is connected to charger negative screw. Does not light up when negative lead is connected to negative busbar.

Only the 24v output, and fuse, of the smart 24v DC to DC charger, lights up when negative lead is connected to negative bus.

Not sure why this happening. Hopefully you will have some idea. Feels like something is just not connected correctly but, I have no clue what. All the wiring seems to be connected correctly. Thanks again for all your help.

Peter

Where does the input go to, why don’t you have voltage there ?

I don’t know why the light won’t work at the input side on the 24v charger. The charger green and blue lights are not lit.

The 48v to 24v converter output feeds the 24v power to the 24v charger. However, the light is not coming on when the negative lead is connected to the bus bar on the 48v to 24v converter and the positive lead is connected to the output of the converter. It does come on when the negative lead is connected to the output’s negative screw.

Any ideas? Thanks.

Peter