Victron energy MPPT 150/70 Manual page 67

Follow the below procedure only if (a) the charger is not measuring any PV voltage when it should (i.e. during the day, with
the sun shining, and all connections are ok). (b) the charger no longer charges the battery, and measuring the PV Input with a
multimeter in resistance mode shows a few Ohms or lower. (c ) the charger no longer charges an error 80 to 87 is/was shown.
To recover from a latching relay failure follow this procedure to reset the relay.
Step 1
Power the solar charger through its battery terminals with a
12V battery or bench power supply set to 12V.
Note that if the voltage at the solar charger battery
Step 2
terminals is higher than 15V, the reset button is disabled in
the VictronConnect app so the reset procedure won't be
Make sure no error 80 to 83 is active. If it is active, power
Step 3
Open VictronConnect and navigate to the Product settings
menu. There the PV Short reset feature is shown (see
Note that the feature only shows when (a) the connected
units features the protection, ie. 250/100 VE.Can model,
Step 4
HQ2150 and later; (b) requires the battery voltage to be
between 10 and 15V; (c ) requires VictronConnect v.580
or later; (d) requires firmware version v3.12 or later to be
installed on the Solar Charger and (e) no error 80 to 83 is
Then click the RESET button. It will gray out for a few
Step 5
seconds and return blue. A click might be heard.
Note that for the SmartSolar VE.Can MPPT 250/100 with a serial number between HQ2150 and HQ2250, the
reset procedure – unfortunately – often does not work. In this case, contact your dealer for replacing the solar
charger under warranty.
Is my charger faulty if the reset menu is shown?
Not necessarily, as described above, the charger takes into account the PV and battery voltages to decide if the reset menu
needs to be shown or not. In case, for example, the charger is connected to a 12V battery and no voltage is detected at the panel
terminals (e.g. during the night), the menu will be shown, even if the charger is not faulty. Pressing the reset button in this case
won't have any effect.
Page 63
MPPT solar charger manual
Latching relay reset procedure
Disconnect the PV supply.
possible.
cycle the unit.
image on the right).
active.
Troubleshooting