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December 8, 2025 5:25 pm
Brought two new12000XP inverters in parallel with two EG4 280Ah wall mount batteries in parallel online 1 week ago. One of the 4 fans (2nd from top) on the Slave inverter continuously screams at high speed whereas that other 3 fans on that inverter and the 4 fans on the Master inverter remain off or at low speed. They are in a cool basement. Lowering fan speed remotely for Fans 1 and 2 had no affect. Anyone else have this issue and a fix?f
December 9, 2025 9:24 pm
Are you getting any error or warning codes on the inverter?
Also, is the inverter running the latest firmware?
This post was modified 5 hours ago by EG4 Eric
