Affected Models: MultiPlus-II, EasySolar-II, Quattro-II
When AC Input was applied, the inverter started charging, but showed zero input amps, therefore, it did not amp limit either. At the same time the inverter would show negative numbers in the ac output on the GX Touch or Victron Connect.
Cause: The cause is a hardware issue with the “Current Sense” socket on the bottom side of the unit. When an external current sensor is connected, the internal one is disconnected through this connector. Sometimes the contact inside this connector gets ‘stuck’ due to heat during the production of the board.
Solution: There is a simple solution to resolve this problem and no need to raise an e-RMA for this; only create an e-RMA when the described method below didn’t succeed. Insert a 3.5mm jack plug a couple of times and remove it again. E.g. an (old) headphone plug should work. This releases the ‘stuck’ connector and making it properly register that a plug is -not- inserted.
Steps-by-step repair:
Step 1: turn the I-0-II switch on the bottom of the unit in the ‘0’ (Off) position.
Step 2: open the black connection cover by unscrewing the two screws at the bottom.
Step 3: insert a 3,5mm jack plug (any 3.5mm jack plug will do the trick, e.g. an old headphone or audio plug) a couple of times in the Current Sense socket to ‘reset’ the connector. Do not leave the plug in the socket, always make sure to remove it.
Step 4: Turn the unit ‘On’ and check on your GX device and/or on the VRM dashboard to see if the AC-input current is showing the correct values.