Battery not detected by inverter

This symptom shows up during commissioning or in the installation wizard: the hybrid or storage inverter cannot find the connected battery, and sometimes it cannot find the backup box either. The most common cause is a communication bus fault: the battery-to-inverter cabling is wrong, the communication cable is not suitable, the CAN termination is faulty, or the Enable and GND lines are miswired. Other possible causes are an inverter that is not grounded correctly, inverter firmware that is out of date, an incomplete battery firmware update, or a defect in the CAN interface of the inverter or of the battery management system. If the wiring checks out, the internal COM plug may have come loose. Signs of this are a missing supply voltage between pins 2 and 4 of the COM connector, or an open (very high) resistance between pins 1 and 3. On REbus-based systems, start with the basics: the inverter must be enabled, the DC disconnect must be on, connections must be secure, the inverter and battery must use the same PLM channel, and the REbus voltage must be high enough. A CAN interface functional test does not need the battery connected. It can rule out an inverter defect, but it is not a full check of the CAN bus. If the battery side is still suspected, contact the battery manufacturer.

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• sentence 2: support check: partial - The passages list wrong cabling, an unsuitable cable, faulty termination and miswired Enable/GND lines as possible causes. They never call these the most common cause. -->