Something sounds and looks completely wrong here or I am misreading- You also dont mention if there are batteries and panels connectedOriginally Posted by Andrew_van_Zyl
Asked to attend to LED lights that would glow when not switched on.
On the DB there are 2 Neutral bars. They were not connected. After connecting them the glowing issue went away.
The DB wasn't partitioned for AC and DC but the sytove circuit breaker was powered directly from the Main Isolator (bypassing the earth leakage)
After sorting the neutrals out the inverter throws an error and alarm when coming out of loadshedding. When only on AC or only on DC the thing is fine. It's when crossing over.
Error code is F18 - AC overrun
Checking the manual there is a L, N and a "PE" cable.
Existing wiring is L and N from the Main switch to the Inverter, and then a blue and yellow connected to the power in on the Earth leakage - Blue to N and Yellow to Live.
I'm sure this is incorrect but don't know enough about inverters.
Can anyone assist?
There should be a supply going to the inverter on terminal marked - Grid
The inverter essential load output ( Load) should then go to an isolator/D/pole CB and feed it's own neutral bar and live
The Deye has 2 outputs - one that is essential load and a 2nd that can be programmed for part essential with load control or genset input.
The essential output of the Deye needs to have an earth neutral bridge contactor when it runs in grid loss - This contactor coil is feed from terminal ATS which energizes the contactor in grid loss -
Looking at your pic it would appear that grid in and essential out is on the same live and neutral point
Sounds like the client got taken by a so called installer that has no idea
Don't get confused - it is the same as connecting any UPS into an installation just a couple of extra settings and then some panels
On the Deye and Sunsync there is a 2nd output which could be like 2 UPS's connected into an installation
After all that - If everything does appear to have been correct before you got there - The glow is because the earth neutral bridge was missing.
You don't mention if it is all the time or just during grid loss .
If it was just grid loss then you will need to insert a bridge contactor operated by terminal ATS
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