Product Manual

2. Check if the battery has been charged with a too high voltage. Very high charge voltage will damage the battery. Check the
maximum battery voltage and the high voltage alarms in the battery monitor. Check if the measured maximum voltage has
exceeded the battery manufacturer recommendations.
9.5. Solar issues
This chapter deals with the remaining potential solar issues that were not already discussed in the earlier chapters.
9.5.1. PV reverse current too high
Overcurrent does not necessarily damage the solar charger, but it will cause damage if the array produces too much current
while, at the same time, the array has been connected in reverse polarity to the solar charger. Damage due to overcurrent is not
covered under warranty.
Refer to the solar chargers technical specifications for the maximum PV short circuit power current rating.
9.5.2. PV yield less than expected
Check the solar charger history in the VictronConnect App. Check the total maximum power (Pmax) for each day. Does this
match the array power?
To find the potential solar yield per day for a specific PV array size in a specific geographical location, use the MPPT sizing
calculator on the solar charge controller product page.
These are some of the reasons why the array is generating less power than expected:
• Low sun angle, seasonal differences or morning/evening.
• Cloud cover or bad weather.
• Shading from trees or buildings.
• Dirty panels.
• Incorrect orientation and/or inclination.
• Broken or faulty solar panel(s).
• Issues with wiring, fuses, circuit breakers, wiring voltage drop.
• Bad splitters or combiners, or these are used in an incorrect way.
• Part of the PV array not working.
• PV array design issues.
• Solar array configuration mistakes.
• The batteries are too small, or getting older, and have a reduced capacity.
VictronConnect history Pmax
9.5.3. Full rated output not reached
There are a few reasons why the solar charger is not reaching its full rated output.
Some of these reasons have already been explained in the the chapter: “The batteries take too long to charge, are undercharged
or charge current less than expected”. Some additional reasons are explained in this paragraph.
MPPT solar charger manual
Page 49 Troubleshooting and Support