I have a SmartSolar HQ1901D1AL1 running on a 48V system which has decided to stop charging. With the PV disconnected I am at 176V, once connected the PV input drops to zero. Victron Connect indicates low PV input, 0V.
I’ve connected the MPPT to a 12V and tried to do a reset with no success.
Any ideas?
The MPPT has a mechanism with a PV input relay for protection that keep the input shorted.
Some conditions may have trigger it and a procedure must be performed.
Not to mention that some old versions have a problem with the firmware and that relay remains closed. Your’s a 2019 I see.
Try to update the firmware to the latest, because since late 2022 the firmware tried to address this, especially for 250/100 model.
I updated the firmware, unplugged the solar and battery.
plugged in a 12V battery.
Then connected to VictronConnect and followed the instructions… MPPT Solar Charger PV Short Relay Reset [Victron Energy]
But I do not see the Reset Relay Option
The client is 2 hours from me, had I been intelligent I would have brought the MPPT back to my workshop.
Now I realized something… Sorry.
SmartSolar VE.Can MPPT 250/100 - Pv Short Relay introduced per Serial number HQ2150 and newer.
Yours is HQ1901… So 2 years before introducing the Pv Short Relay.
So, I’m afraid that something else could be the problem… Probably some other type of hardware issue…
Hello,
Have you solved the problem of your mppt 250/100.
I have the same symptoms (short-circuited PV input) on a model prior to Serial number HQ2150 and newer with error code 39 and 86.
a priori the short-circuit relay exists on the old models but there is no reset procedure accessible to the customer.
thank you for your answers
