Hi, All!

I'm having trouble finding wiring diagrams for the smart load function on these Deye inverters.  So far as I can tell for two in parallel your battery runs common between them, the AC runs common between them, the outputs run common between them.

Is this now the same for smart load?  Because I've got the one inverter going to one set of geysers and the other inverter going to another set of geysers.  It works but I'm getting some really weird numbers and strange grid draws close to 3kW depending on which ones are active at the time.

SMART LOAD, not the non-essential load before someone asks about my CTs  HAHA!

Aux port does not work in parallel and should be left unconnected.

Doesn't work at all?!

My geysers are warm though so can you tell me more?  I'm not sure I understand what you mean by it "does not work".

Edited June 1, 20233 yr by Charl Joubert

From an installer manual:

Ah I see.  I only have a user manual.

But there's no frequencies to be in conflict.  It's not being used as a Gen port.  Would you mind sending me that manual so I can read further please?

I've found the manual with some Google-Fu!  HAHA.

It's a bit ambiguous.  I'm sort of reading between the lines where it says you can't paralell it, but it doesn't say you can't connect it to just one of the inverters.  Do they mean to say you can't use it at all when the system is in parallel?  That the ports cannot themselves be connected in parallel but one can be used?

My installer is also roping in an expert because it is behaving strangely.  Just to give you an idea I have one set of geysers connected to slave and another set to master:

• When the Smart Master breakers are on, it draws from grid.
• When the Smart Slave breakers are on, it does NOT draw from grid.
• When BOTH the Smart Slave and Master breakers are on, it still doesn't draw from grid.

I have a very large house and I was excited about being able to manage which geysers are being used from one point and stopping them from draining my battery at night.

For now it "works" but I don't think it's "correct".

Yeah, I think basically it does not work as intended/expected. So don't use it, or things might break.

I took a drive to Sunsynk SA.  Funny they're about 5 minutes from my house.

I spoke with one of their experts.  The guy tells me that if I'm going to use the aux port then everything must be paralelled INCLUDING the aux port.  So my installer is going to come back at some point and we're going to bridge them and see what happens.

I'll report back when the smoke clears 

Nothing blew up!

I can confirm that on this software version you can in fact bridge the two Smart Loads:

For a fuller story see this post.

The more I thought about it the more it made logical sense.  You bridge everything else and the two inverters basically "share" everything, why not the Smart Load as well.

1 hour ago, Charl Joubert said:

Nothing blew up!

I can confirm that on this software version you can in fact bridge the two Smart Loads:

For a fuller story see this post.

The more I thought about it the more it made logical sense.  You bridge everything else and the two inverters basically "share" everything, why not the Smart Load as well.

Is it documented that you can bridge the 2 x smart load connections? 

On the Single phase inverters the AUX and LOAD is on the same busbar. Keith explained it in one of his videos. 

Load is already connected in parrallel, so I guess it would make sense to connect AUX too

1 hour ago, Scorp007 said:

Is it documented that you can bridge the 2 x smart load connections? 

I can't find anywhere that says you can, or even should.  My only source is talking to someone from Sunsynk by Malibongwe.  As for anything that says you shouldn't the only thing I've found is what @P1000 pointed out, and the only reason for it is that the generator and grid could have a frequency conflict which doesn't seem to apply in the case of using it as Aux.

My other source is that mine has been fine since Friday (that's four days as of the date of posting).  It's actually behaving correctly and nothing out of the ordinary is happening.

I promise that if anything DOES explode or go wrong I'll post it here.

46 minutes ago, iiznh said:

On the Single phase inverters the AUX and LOAD is on the same busbar. Keith explained it in one of his videos. 

Load is already connected in parrallel, so I guess it would make sense to connect AUX too

Ja that makes sense to me too.  But as I said, if anything goes wrong I'll post here.  It's been fine so far.