SmartSolar MPPT 75 / 15 shows draw on "Load Output" when nothing connected?

Q&A and troubleshooting
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1

Recently installed a SmartSolar MPPT 75 / 15 which is connected to a 50 watt solar panel and a 12v LiFePO4 12Ah battery. Even when nothing is connected to the “Load Output” leads the app, connected via BT, shows a draw of 0.2A/3W to 0.3A/4W. I would expect the Current/Power readings to be zero when nothing is connected. I do see an increase in current and power when there is an expected draw, but it never goes to zero - even when disconnected.

TIA for your help.

2

@ramstex Can you confirm both the VictronConnect app and MPPT firmware are the latest?

3

Is the load output turned off in the app? I saw the same when leaving it “ON” without loads connected.

4

Yes, current MPPT firmware is v1.68 with integrated Bluetooth interface (rev 3) at v2.53

5

No, the Load Output is set to “Always On.” I need that for my use case when I have something connected. I just thought it odd there was a power draw on the output when nothing was actually connected.

6

What is currently / usually wired to the output? I checked two units on my test bench and one with a led light wired to it and one without anything and both show solid 0’s.

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Also check for stray wires, mabe water ingress or something. Where is it installed?