mirceacra

Hello, I feel I owe an explanation, I managed to repair my MPP SOLAR PIP4048MS inverter, the problem was with one of the fuse terminals in the inverter (I think it's 150A), where the contact was imperfect, I cleaned the fuse well with fine sandpaper as well as the terminal, I tightened everything back and now the inverter works normally, without any smell of burning or overheating!!

I know that this coil heats up in operation and has no dust on it to burn, the smell is intense and every time I exceed 2.5kwh as a consumer. I know, it's complicated to repair something that works, but that burning smell bothers me and more than that, I don't think it's normal for it to appear. I repeat, it worked without problems for me for more than 1 year

Hello dear fellow forum members, I have for about 1 year an older mpp solar inverter 4048ms, 4kw with low voltage (max. 145v) of the mppt, which, for about 1 month, emits a burning smell (strong heating) from the inside when at the output there is a load greater than 2.5Kwh I think the cause is the filter coil on the AC output, I looked with a thermal camera and it is the hottest part on the inverter board. I don't understand what's happening, the inverter still works perfectly but I'm afraid to let it work like this.... Can you help me with a diagnosis? (I mention that the sinusoid on the output is perfect even at high loads) and that there are no imperfect contacts at the springs and screws. I am at your disposal with images and any data you need, thank you!