Zappi 2 issues

DrPhilG

My Zappi has taken to conking out overnight. First off had an over voltage error, then it's been tripping the fuse in the garage every other night.

I'm currently sat in Derry paying 92c a feckin unit because the charger crapped out again overnight.

olympicweights

Quick question in relation to charging with zappi and heating with eddi on night EV rate over 4 hours. Is the combined power available for zappi and eddi limited to 7kW as I notice that my zappi reduces power (say 5kW) when the eddi starts heating at 2kW?

slave1

Depends on what you (or installer) have set the grid limit at (in terms of Amps). Official MyEnergi installers are supposed to set far below the usual limit at 50amps IIRC

creedp

https://www.boards.ie/discussion/comment/121605382#Comment_121605382

Just reading this thread now and wondering if you got sorted or did you take up the offer of a reconditioned unit?

My ver 1, which worked flawlessly for 5 year until the day I connected it to the solar, is giving ongoing bother in that every time I unplug the car I get a 'Power failure !' message. I have to turn it on/off at the breaker and it normally sorts itself out but sometimes it takes 2 or 3 goes to sort it.

I don't have an Eddie and the Zappi is connected remotely to CT clamp in main consumer box in house (zappi is installed via a sub board in garage).

I spoke with ME and sent on details and images of screen, but they said as its out of warranty aI would have to get a local electrician to check it out which I have found almost impossible. So basically for the last year or so each time I unplug I have to switch on/off at the breaker which is a bit of a pain but it does the job. If ME would supply a reconditioned unit for €350 I'd give it a go for the convenience and on the assumption my current charger has a limited lifespan

CivilEx

https://www.boards.ie/discussion/comment/122725571#Comment_122725571

Both my Zappi (7kW) and my solar battery (2.5kW) are timed to charge between 2am and 5am each night, where the total power draw from the grid is around 9.5kW. It's not quite the same as your Eddi issue, but the Zappi is not limited in power. Normal setup with a CT clamp / harvi monitoring power draw at the ESB cabinet.

DrPhilG

https://www.boards.ie/discussion/comment/122726963#Comment_122726963

Spoke to a more intelligent support person at Myenergi and eventually got it sorted. Can't actually recall what he did mind you!

olympicweights

https://www.boards.ie/discussion/comment/122726658#Comment_122726658

Just to clarify I'm also charging a 15.5kWh battery at 70A so that draws circa 4kW. Total power draw from the grid can be 11-11.7kW. It just seems that the Zappi reduces once the eddi starts to heat.

So possibly increasing the Device Limit would keep the Zappi charging at the full 6.9-7kW?

Jonathan

https://www.boards.ie/discussion/comment/122728178#Comment_122728178

It seems to be working as intended? You're hitting the 12kW Max Grid Limit (4kW battery + 7kW Zappi + 3kW Eddi + ??kW house load) you have configured and the Zappi is throttling to stay under it.

zg3409

https://www.boards.ie/discussion/comment/122729027#Comment_122729027

Agreed. The zappi is probably set to 12kW/50 amps and it is reducing power to prevent main fuse from blowing or something overheating. As it's probably the only device in the house that can vary it's power it's doing what it can. If you want to give zappi more power to play with you need to reduce overall load by heating water less or charging house battery less.

olympicweights

https://www.boards.ie/discussion/comment/122729084#Comment_122729084

Yes that makes sense. It's just that last month I had the battery charging at approx. 3.6kW and there were times that I though everything was only pulling 10-11kW. That made me think that maybe there was a combined limit on Zappi & Eddi of 7kW. I'll keep an eye on it and adjust to suit my needs. Thanks