fmeili1
Solar Enthusiast
I had bad flickering LED's on one of the two phases.
After a couple of days/weeks searching the cause of the problem, I finally found it.
Environment: 6x EG4-6500 in split phase, batteries only (no solar so far)
I've checked/tried everything like
The problem was just one specific load in the house which causes interference with the inverters PWM control electronic - it is an 20 year old slot machine which causes the problem and is usually always on and runs on a small UPS (slots should not be switched on/off too often - they are designed for 24/7 runtime). Now I will try to find one of these "Dirty Electricity Filter" plugs to be able to use the slot without interfering with the inverter.
Thanks to @Adam De Lay's hint in one of his videos about his Apple notebook power supply which causes his flickering problems!
Here is a SolarAssistant picture which shows my AC-out voltage with the slot running and at about 18:42 I pulled the plug from the UPS so the slot was not longer connected to power (only driven by the small UPS) and the problem was not longer existing. The output voltage is now much more stable (now on both phases).
My guess is that many (for sure not all) of the reported LED flickering problems have the same cause!
I've isolated the problem by watching one of these flickering LED's and switching off one by one breakers in the house main breaker panel to identify the room which causes the problem. If the problematic load is isolated to a room it's pretty simple to find the load which causes the problem.
After a couple of days/weeks searching the cause of the problem, I finally found it.
Environment: 6x EG4-6500 in split phase, batteries only (no solar so far)
I've checked/tried everything like
- checking for N-G-bonding problems
- parallel communication and current sharing wiring problems
- firmware updates
- program 42 settings
- bonding screws first out now back in (and program 42 set to enabled)
- try to use just one inverter on the problematic phase instead of all 3 in parallel
- ...
The problem was just one specific load in the house which causes interference with the inverters PWM control electronic - it is an 20 year old slot machine which causes the problem and is usually always on and runs on a small UPS (slots should not be switched on/off too often - they are designed for 24/7 runtime). Now I will try to find one of these "Dirty Electricity Filter" plugs to be able to use the slot without interfering with the inverter.
Thanks to @Adam De Lay's hint in one of his videos about his Apple notebook power supply which causes his flickering problems!
Here is a SolarAssistant picture which shows my AC-out voltage with the slot running and at about 18:42 I pulled the plug from the UPS so the slot was not longer connected to power (only driven by the small UPS) and the problem was not longer existing. The output voltage is now much more stable (now on both phases).
My guess is that many (for sure not all) of the reported LED flickering problems have the same cause!
I've isolated the problem by watching one of these flickering LED's and switching off one by one breakers in the house main breaker panel to identify the room which causes the problem. If the problematic load is isolated to a room it's pretty simple to find the load which causes the problem.
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