I am having an issue with enabling the SMART LOAD feature of my system. I have 2 - 6000XPs in parallel sharing 2 - 280Ah EG4 batteries in operation for over a year. I have recently updated the firmware to the latest version. The system works great until I enable SMART LOAD. If I enable smart load, some appliances in my home start to hum. Specifically, the control transformer in my HVAC system will immediately hum and my kitchen microwave is extremely loud when in operation. When I disable smart load, both the HVAC transformer and microwave act normally (after about 30 seconds). The HVAC transformer will gradually reduce its hum to none after disabling smart load (after about 30 - 45 seconds). As a test, I rewired the 6000XPs by disconnecting them from my house wiring and connected one small transformer to the LOAD terminals. The same thing happens. It is repeatable and will start and stop the humming exactly with the enabling and disabling of the smart load feature. I am looking for some help with this problem. Thanks,
