HighJingo
New Member
Any response on this? I have four EG4-6500EXs with 79.71 and the bonding screws present. LEDs flicker like crazy. Level 1 tech support keeps throwing things at the wall hoping something sticks, but nothing fixes it. The latest was that since my load across the four inverters varies, that is likely the cause and I need to move circuits around to better balance the load. Inverters are normally running at 5-7% load unless I fire up the clothes dryer, air fryer, curling iron etc. I'm doubtful moving circuits will fix it. I see voltage output variations frequently and randomly and think this is the cause. Any thoughts or suggestions?Hello James,
are there any plans to release an additional EG4-6500EX firmware update to try to improve the LED pulsing (flickering) problems which still exists with the current firmware version 79.71? My whole house runs on LED and about 1/4 of them are flickering at about 5 Hz?
The load of the inverters does not play a big role in the LED flickering effect. It's nearly the same if the inverters (six inverters in split phase setup) drive only 500W or 25kW - it may be a little bit better under high load... The flickering happens even when running the inverters only from battery (no PV).
If flickering LED's are switched on and flickering occur, the inverters output voltage also starts fluctuating between 118V to 120V. Without using the flickering LED's the output is stable at 120V.
For me it looks like the PID controller to regulate the PWD inside the inverter gets "irritated" with some sort of LED lights and their driver electronic and interfere with them and starts oscillating. I suppose, the PID controller in the EG4-6500EX is implemented in software to be able to improve the situation with a firmware update.
I think about doing a quick test and wrap the phase wire of one of the flickering LED with some windings around a ferrite core. I guess there are high frequency distortions between the inverter PID controller and the LED's electronic which causes the oscillation. With the ferrite core I want to give this idea a try to damp this distortions.