Troubleshooting And Support; The Controller Is Not Operational; Visual Check; Battery Supply Check - Victron energy MPPT 150/70 Manual

9. 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.

9.1. The controller is not operational

For the controller to be operational it needs to be powered-up. The controller will power up if a battery and/or a PV supply is
present. As soon as either of these is supplied, the controller will be powered up and VictronConnect can be used to: check
controller status, to check errors, to update firmware and/or to make or change settings.
Once powered up and operational, the controller LED(s) will illuminate or blink and is able to communicate with VictronConnect
via Bluetooth (Smart models) or via the VE.Direct port (all models).
If the unit does not power up use this chapter to check the possible reasons why the controller is not operational.

9.1.1. 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.

9.1.2. 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 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
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MPPT solar charger manual
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Measuring battery voltage at the battery terminals of the controller
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.
Troubleshooting and Support