I have an old Phoenix Inverter 12/2500, that has a very odd problem.
It reads the Battery Voltage wrong, and so it goes into Battery Protection Shutoff for no reason.
When connecting via VEConfig, the DC Voltage reading is drifting and jumping incomprehensible, but it is definitely not true.
It can take up to several hours for the Protection Shutoff to engage or sometimes it happens in minutes. The device comes back to operation after some time.
It is regardless if and how much load is connected.
It is also regardless if its hot or cold.
I tried to apply some light mechanical pressure on the circuit boards, too see if its a cold solder point or a hairline crack etc., but it does not affect the wrong readings.
I sent the device to Victron for repair, it did qualify for a send in, but there are no more spare parts available for this unit and so Victron was unable to repair. Maybe it would have saved me €100 for the transportation and check up fees, if Victron would have known this, before I sent the device to them. They offered, that i do not have to pay the fees, if they can keep the device. I was not very satisfied with the repair service, but thats not the point.
The Battery Protection Shutoff Feature could be easily replaced with a Battery Protect 200.
So is there any way to deactivate this internal Battery Protection Shutoff Feature completely?
or does somebody here know, where too look after on the circuit boards, to fix this?
It would break my heart to throw this device away...