Hello,
It appears my Multiplus 3000/24 has stopped working. It will not turn on and the Cerbo shows it as disconnected. This happened after I powered off my system today (by disconnecting the battery). When I reconnected, it would no longer show any signs of life. Shore power was disconnected at the time. No AC loads were connected.
Things I have tried:
1) Measured the voltage at the terminals inside the multiplus - 26.4v
2) Replace the fuse in the Lynx distributor just in case
3) Try with shore power plugged in
4) Try with the communication cable disconnected from the Cerbo
5) Measure the voltage during power up - it starts at around 1v (whatever is left in the capacitors, very slowly discharging). I can see the voltage ramp up over a few seconds as my BMS's (REC BMS) pre charge is activated, and then go up to 26.4 when the main contractor is switched on. I also tried without the precharge.
No LEDs turn on at any point. Everything else appears to be working fine (MPPT, DC loads, Cerbo).
What are my next steps?
Thank you!