Have had the SolarX 4K for a few months. Set it up with extensions and an extension on the communication cable into an outside cabinet, so it makes noise outside with its own cooling system, etc. Works fine, but every now and then I notice it is sunny (I am in California here in thee Spring of 2026) and I walk out into my patio where it is and no noise. This means it has not come on. I have two separate Bluetti set-ups with an inverter and stacks of batteries. My AC500 and batteries always comes on in the back of my house and runs. For some reason, the one with the SolarX 4K, which used to always run off of rooftop solar panels, will not turn on in the morning from time to time. There will be 2K worth of PV power being sent into it, and nothing. I have to turn off all the breakers coming and going from it, make sure my Apex 300 and 6 B300K batteries are all off, then cut everything on and it starts. This could be a problem if I left home for a few days and all my food went bad. Right now, it has not done so for about 10 days, which is good, but I would like to know if anyone else has this problem?
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I have had this same issue. Usually it happens when the batteries get fully topped off and still have lots of solar coming in. Thought it was maybe and over voltage due to solar x turning off and not
liking the open circuit voltage, but I don’t think I’m that close to the max. Solar x did an update no issues since will see if that fixed it.