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5. Troubleshooting Guide - MPPT
5.1. Troubleshooting and Support
Consult this chapter in case of unexpected behaviour or if you suspect a product fault.
The correct troubleshooting and support process is to first consult the common issues as described in this chapter.
Should this fail to resolve the issue, contact the point of purchase for technical support. If the point of purchase is unknown, refer
to the
Victron Energy Support
webpage.
5.2. The controller is not operational
For the controller to be operational it needs to be powered-up.
Once the controller is powered up, VictronConnect can be used to: check controller status, to check errors, to update firmware
and/or to make or change settings.
If the unit does not power up use this chapter to check the possible reasons why the controller is not operational.
5.2.1. Visual check
Before any electrical checks take place it is wise to visually check the solar chargers in case the solar charger has been
damaged.
• Check for mechanical damage, burn marks or water damage. This damage is not normally covered by warranty.
• Inspect the battery terminals and the PV terminals. If there are burn marks on the terminals or if the cables or connectors are
molten refer to paragraph: "PV cable connection burned or melted". In most cases this damage is not covered by warranty.
• Check if there are burn or melting marks on the housing or if there is a burn smell (all very unlikely). If this is the case, lodge a
support request with your Victron dealer or distributor. Depending on the cause, this damage might not covered by warranty.
5.2.2. Battery supply check
Check if the solar charger is receiving battery supply.
The normal way to check the battery voltage is via the VictronConnect app, a display or a GX device. However, in this case
the controller is not operational so the battery voltage needs to be measured manually. Measure the battery voltage at the solar
chargers battery terminals using a multi meter.
The reason to measure the battery voltage at the terminals of the solar charger is to rule out potential issues with the wiring, fuses
and/or circuit breakers located in the path between the battery and the controller.
Depending on the result of the measurement do the following:
Battery voltage
Operational state
No voltage
Not powered
Correct voltage
Not powered
Powered, but not
Correct Voltage
charging
5.3. Batteries are not charged
This chapter lists all possible reasons why the solar charger does not charge the batteries, and the steps you can take to remedy
the situation.
There are a number of reasons why the solar charger might not charge the batteries.
For example:
• Issues with the battery, PV panels or system wiring.
• Incorrect settings.
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Isolated SmartSolar MPPT RS
Action to take
Restore the battery supply.
See chapter: "battery supply issue"
There might be a fault with the controller.
Contact your Victron dealer or distributor.
Connect PV supply and check if battery charging starts. If charging does
not start, see chapter: " Batteries are not charged".
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Troubleshooting Guide - MPPT
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