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Unresponsive solar charger troubleshooting procedure
If the battery or PV voltage is below the minimum voltage, check the following:
• Check the continuity of the battery and PV supply cables.
• Inspect the fuses and circuit breakers in the battery and PV supply cables.
Step 3
• Ensure that all cable connections are sufficiently tightened.
• Verify if the battery voltage is sufficiently high. If not, charge the battery using an auxiliary charger.
• Confirm if the PV voltage is sufficiently high. Check for any issues with the PV array, such as wiring mistakes,
damaged panels, cloudy weather, nighttime conditions, etc.
If, even after confirming sufficient battery or PV voltage, the solar charger remains unresponsive, consider the
Step 4
solar charger to be faulty.
8.3. Solar charger is off
When the solar charger is off, the VictronConnect app shows this on the status screen. Click the "Why is the charger off?" text for
a pop-up window with an explanation and possible remedies.
The reasons why the solar charger is off:
• There is insufficient PV power. Refer to the
• The settings are being edited on an external display. Refer to the
• The charger is disabled in the settings. Refer to the
• The charger is disabled by remote or BMS. Refer to the
• Low lithium battery temperature. Refer to the
8.3.1. PV voltage too low
The solar charger starts charging when the PV voltage is 5V above the battery voltage. Charging continues if the PV voltage
remains 1V higher than the battery voltage.
To troubleshoot if a low PV voltage is the reason the solar charger is not charging, use the below procedure.
Page 46
MPPT solar charger manual
PV voltage too low [46]
subchapter.
Settings being edited on an external display [47]
Disabled in the settings [48]
Disabled by remote or BMS [48]
Low lithium battery temperature [48]
VictronConnect app – Why is the charger off?
subchapter.
subchapter.
subchapter.
Troubleshooting
subchapter.
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