Hello, I have a quick question about what to do regarding the high temperatures in the Multiplus 2, measured with an external temperature sensor that was supplied with the MP and mounted on the top of the housing of the MP II. Each of the 3 MPs is read out in Home Assistant (Cerbo GX) and the measurements are virtually identical. MP v560 Cebro v3.71
Mains connection 3 phase 25A, 3 Multiplus II 6K5, discharge approx. 16 kW per hour
Problem description:
During discharge approx. 110/120A per MP, the temperature is approx. 32/35 degrees and the cooling fans in the MP are running at full speed, which feels okay to me. However, after discharging, the charge/discharge current drops to approx. 1.5/-2.5A and the cooling fans in the MP stop, after which the temperature rises to 52/53 degrees. How can this be solved? I look forward to your responses.
Have you verified with a temp gun or flir that it is reading correctly?
It is likely that the inverter internal programming for this has decided its ok not to run them.
But if it is verified that it is not then something would have to be revisited
The interal fan is not controllable by the end user other than silent fans assistant. Which is stopping them not running them longer.
It’s possible that the system could run the fans for longer, as what you’re observing is likely heat dissipation after saturation. However, a temperature of 50 °C is not a concern. If the unit were operating at higher temperatures, the fans would automatically run as needed anyway. Since heavy charge is finished so the heat rising is no longer a concern.
I mounted 80mm silent temperature controlled 4-wire PC fans with zip ties to my MP2s. Model is Artitic P8 PWM PST. Controller is from AliExpress. Temperature sensor is mounted via Alu tape on the front of one MP2. They start at 24.8C and reach max rpm at 28C. Internal fan starts on continuous (>1hr) inverter power of 2kW per MP2 5K.
