I came across this issue with Victron Solar Sense 750 today. The instantaneous readings are recording in various data systems (VRM/Node-Red/Influx). However, in one unit today, the Daily Yield total which is a cumulative data field reset to zero. In the first screenshot, the top graph is the instant…

Hi Luc, The first 6 digits of the serial numbers for all 3 unit are HQ2606. I sent some information to the supplier this morning and it covered 4 weekly time periods spanning both June and July 2026. I did a firmware update to the units somewhere around 1 July 2026 to version 1.02. This should hav…

I am attaching a screenshot from 17 July 2026. One solar sense unit resets itself to zero (red Graph line) a few minutes past noon. The unit represented by the (Green Graph line) does not reset to zero but drops a small increment between 0.1-.02 Watts on two instances. As you state, this may be rel…

Yesterday I connected to the Solar Sense units via Victron Connect. They all reset the accumulated Yield to zero at a synchronised 0001, or so, hrs. Today however one of the three units reset twice to zero as per the attached screenshot. 2026-07-21 at 12.07.50.pdf (275.5 KB) It would appear that c…

Hi @McKillop , in that case, something is wrong with this unit. Seeing as you’re already logging to Grafana, can I ask you to record the TimeSinceLastSun and BatteryVoltage topics? My hunch is that the unit is unexpectedly reset for some reason, with a battery disconnect seeming the most likely. Ca…

Hi Luc, I wasn’t logging the TimeSinceLastSun to Influxdb and as such cannot get you the historical records for this immediately. I altered the .conf file and will be able to get you the data record from here onwards. I will give it three days of data and will then attach the records for you. Let m…

Hi @McKillop , thank you for the assistance. (Un)fortunately there is no clear dip in battery voltage, although /20/ does seem to swing a tiny bit more. /20/ is the misbehaving unit correct? It might be the case that battery voltage is only available on the VictronConnect beta . At least I can see it…

Hi @CZvacko , yes TimeSinceLastSun should work as far as I know. If there is a lot of light pollution it might be that the irradiance never drops below the “No sun” threshold, but then I hope you have some good blinds on your windows.

I works by recording the time since the last sun. During the day the record is zero. The time count begins from when the unit records no sunlight and continues until first light is recorded. The attached graph is from the early posting to Influxdb before I rationalised the data collection. 2026-07-…

My error, I was looking under trends and failed to see the graphing under history. The voltage for the unit is attached. It covers 6 July to21 July (Today. VictronConnect SS Voltage.pdf (313.9 KB)

Issue with Solar Sense Daily Yield Recording

DIY

CZvacko July 21, 2026, 7:20am 8

Are you sure that this MQTT topic should work? As mentioned somewhere else, with my unit it’s always 0.

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Issue with Solar Sense Daily Yield Recording

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