Eddi issues

cobham

Anyone here expert on finer points of Eddi? Ours seems to have a life of its own, comes on randomly. Still trying to sort other problems like a battery that does not discharge and the Myenergi App that will not open up/register. But thought if we could sort out Eddi that would be one problem less!

slave1

Have you tried phoning them in the UK on 0333300 1303, their phone support knowledge is excellent

cobham

Thks for that Slave1.... is that a phone no for Eddi? I think other half has been onto the Myenergi crowd and the installer is trying to sort via phone with us but very unsatisfactory. Only learnt yesterday that both blue boost lights on at same time meant max temp reached. We ;thought they lit up when charging eg one light for first element and two for second. We have a 'new' Eddi installed in Sept so the hub is built in to device unlike earlier models. The inverter is offline at the moment (maintenance??) so dont have benefit of the data display on that right now.

TerraSolis

https://www.boards.ie/discussion/2058274138/eddi-issues

Hi cobham,

I'm reasonably well versed in the MyEnergi kit. The first thing I'd say is at least 50% of people with issues with any of the kit have a CT clamp on the wrong wire. Do you have more details as to your problem? For example, when it comes on randomly, have you checked what the EDDI's readings are (what it thinks your exporting, importing, generating etc.).

cobham

I must start taking better notes of problem, have been hoping it would be sorted by others by now! I need to take a full day to make obs. Thanks TerraSolis.

silver_sky

It sounds like a signal issue. May not necessarily be the WiFi, but the other RF signal that Eddi uses to communicate with the Zappi or Harvi. Do you have any other Myenergi devices? Where is the Eddi located?

cobham

The Eddi is located beside the water cylinder upstairs. We dont have a Zappi. The Solarman App for the inverter is offline now also a couple of days. Is this a maintenance issue?

silver_sky

https://www.boards.ie/discussion/comment/119949658#Comment_119949658

Have you changed your WiFi network or password on that? if both Eddi and inverter are having issues then that would be my best guess

cobham

Yes there was a bit of a change from initial registration to wifi extension in house... we lent it but it is back now. I suspect something odd about wiring as guy was back to add extra fuse and had all wiring out at back of fuse box .... trouble ever since but also day there was a general power cut of an hour earlier in the area.

stickman1019

https://www.boards.ie/discussion/comment/119945164#Comment_119945164

Sorry to hijack this but I have a similiar issue. I found the Eddi not reading correctly.

SoI have arrowed it down a bit that this issue appears to be happening when the battery is not 100% charged.

Would you happen to know the reason for this ?

TerraSolis

https://www.boards.ie/discussion/comment/119950667#Comment_119950667

Can you expand on this? Is the eddi reading higher or lower / and importing or exporting when the battery isn't charged. Is the battery charging at that moment in time?

If the battery isn't charging or discharging it's state of charge should make no difference to the Eddi's operation. The Eddi can only see current flowing. It doesn't know your batteries status outside of charge or discharge level.

cobham

Feel free to jump on with all Eddi queries! Now the Myenergi App is working! = 3 mths on. ... and we just got the inverter back on line. So we make progress but something is fundamentally wrong. We can now see the overview of data for the month except for the days the inverter was offline so huge increase in consumption in past 10 days coinciding with day work was done on fusebox. Now is showing the Eddi boosting away all by itself. It is set on timer to boost short spell c 8 am and 6 pm but not middle of the day.

pgalea

Interesting I've been having a bit of a similar issue for about a week.

My Eddi is scheduled to boost at 3:30-4:30, however I've discovered it's been coming on when it feels like it even when I am not exporting energy.

Today I tried to control the Eddi from the app and it was pretty unresponsive all day. Then I noticed the time was correct but the date was completely wrong.

The Eddi and Zappi are both V2 and connected via hardwired ethernet, the Zappi is acting at the hub.

Cannot figure out why has changed all of a sudden but it's a pain has its depleting my powerwall. I have a CT hooked up to the supply, gen and battery to the Zappi and a temperature sensor on the cylinder hooked up to Eddi.

Anyone else having similar issues with app and Eddi ?

con747

https://www.boards.ie/discussion/comment/119953966#Comment_119953966

My Eddi was using battery power and this stopped it if any use to you. https://veepenergy.ie/how-to-prevent-the-myenergi-eddi-to-drain-your-battery/

cobham

Well the oddities of the battery are a whole other story... since lads fiddled with electrics three weeks ago, it is no long 'feeding' the house at night and is showing full in the morning. Comment above about crossed wires seems a likely suspect. Thanks Con. How to get them to come back? registered installer etc and still no BER done or grant application made.

I am at stage of getting rid of Eddi and putting back my immersion timer only replaced last year ... pity it was removed. We dont have night rate yet but if and when we do, the timer could heat water at night for following day and if loads of sun in summer we can just put energy into water by turning it on immersion directly.

irewestlad

Hey all, I’m seeing an issue with my dad’s Eddi where it is reporting excess supply (and sending to immersion) even though the panels are producing very little currently these days. I’ve checked and there is no timer set up either. Anyone else see this? Any thoughts on how to resolve? Thanks

slave1

How long is the EDDI installed? I assume you tried an off/on cycle

cobham

I had some sort of problem similar ... it seems it was some default system to power up whenever it felt like it. The inverter was tweaked by installer and seems to have stopped. Meanwhile with what seems wrongly configured CT Clamps the Apps x 2 and the inverter screen still contradict each other. So that might be a data issue but the hot water when not scheduled and on a dull day was very obvious...and the blue lights '0n'

silver_sky

https://www.boards.ie/discussion/comment/119955381#Comment_119955381

Sounds like they setup timed charging overnight. If its set to charge (even if full), it won't discharge.

TerraSolis

Main grid CT clamp is backwards - if I had a penny 🙃

It's an easy fix if you aren't put off by opening up your consumer unit/fusebox.

cobham

Heading into to brighter days so look forward to getting good feed off solar. We have a battery so when that is full, excess goes to the water via the Eddi. Does the energy continue until the full tank is heated to a certain temperature before the excess goes to the grid? We have the Eddi set up to charge up from the grid with one immersion element morning and evening. This is just the top of the tank. Does the solar continue to the rest of the tank? Or does the second element have to be selected as a setting on the Eddi?

slave1

IF you have both immersions connected to the EDDI then you decide which one is priority (usually the top/traditionally called "sink") and once that immersion senses (it has a temperature stat) water has reached desired level it will move to priority two (usually the bottom/traditionally called "bath).

Once priority two reached desired temp then your cylinder is "full" and excess will be exported (assuming no battery/EV).

EDDI will check is the water still hot every 10minutes or so, or will automatically kick in if you run the hot water off with washing dishes/hands/shower etc etc

cobham

Ah that checking back every 10 mins explains why the blue light comes on at odd times. I must check the settings. It would be nice to have most of excess into hotwater and not going off to grid when a pitiful return. For the moment we have the winding back meter!

cobham

We have selected the Eddi to boost Tank One twice a day. (aka top immersion). The solar when it has excess seems to top up the temperature on the early morning boost and then exports the rest? or maybe it is doing both at the same time? Will it go on to power up the second immersion (tank 2) if the first tank is at full heat?

Not so relevant at this time of year but we look forward to better production over summer. If we are away for more than a few days should we turn off the Eddi or just 'zero' the settings?

jkforde

https://www.myenergi.com/wiki/eddi/operation-4/

when Heater1 (bottom emersion?) is at max temp (immersion stat) then Heater2 (top?, if it exists) will take any surplus.

slave1

most folk have Sink/Top as 1 and Bath/bottom as 2 and to answer @cobham it should move from 1 to 2 after 1 has reached max temperature and it should do so automatically

graememk

Do you have 2 completely separate immersions or a combined sink/bath one?

if it's a 2 in 1 immersion (2 elements 1 immersion, usually from the top of the cyclinder) they share the same thermostat.

Because they share the same thermostat the second element won't kick in as it would appear the tank is "hot"

If it's combined immersion, the sink one is usually a lower power one. If you boost each immersion the lower power one is the sink.

cobham

It is a combined tank with two elements for sink or full tank. I am still a bit confused. Power is going to the grid as well. Does that mean that only so much can go to the Eddi and some excess will also go to grid at same time? At some stage middle of the day both blue lights are 'on' on the Eddi which I believe means that the thermostat temperature is reached. For the moment with limited sun it is hard to imagine the full tank is fully heated. It is so well insulated it is impossible to feel the bottom of the tank. I would like to think in midsummer that we might get a full tank of hotwater as well as run the house and charge battery on a good day. For the moment no EV to complicate matters!

con747

https://www.boards.ie/discussion/comment/120245738#Comment_120245738

If you look at what power the Eddi is using on the screen it should show about 1.5kw for the old sink top element and about 3kw for the old bottom bath element when heating the water. It should be well capable of heating the hot water tank and filling the battery and covering the base load of the house during the good months unless it's a small system.

Redlim

https://www.boards.ie/discussion/comment/120245025#Comment_120245025

Sorry to hijack but @graememk I think what you described above in relation to the 2 in 1 top immersion is exactly what I have. My Eddi is only heating the top half of the tank as when "Tank 1" (sink) gets up to temp it just shuts off and starts exporting excess solar instead of moving onto "Tank 2" (bath). Similar to what you described, they must both be using the same thermostat.

Is there any way to get it heating the full tank? I think I tried changing the priority to tank 2 but it still seemed to only heat the top half before switching to export.

con747

https://www.boards.ie/discussion/comment/120246246#Comment_120246246

It's possible it was wired up wrong or the element is faulty.

graememk

https://www.boards.ie/discussion/comment/120246246#Comment_120246246

The immersion likely only goes down half the tank

Either get a longer immersion or an external one

Redlim

https://www.boards.ie/discussion/comment/120246497#Comment_120246497

Ah ok cheers, was hoping there might be something simple that I was missing that could help sort it but that makes sense.

I presume the old sink/bath switch prior to getting the solar and Eddi installed had the exact same issue but it wasn't something I ever checked as we didn't use the immersion much before solar.

Redlim

https://www.boards.ie/discussion/comment/120246404#Comment_120246404

Sorry only saw this post after replying to graememk. Would be great if it was just a wiring issue but what graememk said about the element only going down halfway makes sense.

graememk

https://www.boards.ie/discussion/comment/120246587#Comment_120246587

If you boost tank 1 how much power does it use?

If you boost tank 2 how much power does it use?

The higher one is the "bath" element.

My immersion gave up, and I got it replaced with one about 9" longer... And it's still not long enough!

If I ever get the tank replaced it will have separate immersions

cobham

Now I am more confused! I think I need an electrician to explain how a water storage tank with two heating elements and one thermostat works when heat rises to the top and that is where the thermostat is located. I know I can set up the bigger immersion heater to come on whereby power might come from the grid when not enough solar available. But this defeats the purpose of the Eddi using the water to store excess solar. Lashings of hot water was one of the attractions of getting the solar installed. A full tank of hot water on a sunny day would help out with the following day if cloudy with just the back up boost of the smaller element for short times for essential hot water.

con747

https://www.boards.ie/discussion/comment/120246752#Comment_120246752

When you look at the Eddi screen when there is excess it will show how much power it is using, then you know which part of the element is heating the water if you have a a twin element. What @graememk means is the higher power it is using is the bath element and the lower power one is the sink element. So if it is using about 1.5kw it is heating the sink element, if using about 3kw it is heating the bath element. Check the Eddi screen to see what is being used.

Redlim

I've just tested the readings on my own Eddi using the manual boost function.

Tank 1 gets up to 2.8kW

Tank 2 gets up to 2.0kW

So it looks like mine is wired where Tank 1 is bath and Tank 2 is sink.

I assume I should just leave the priority at Tank 1 (bath) so that it can heat at a higher rate if there is enough surplus solar. It also potentially heats a bit lower into the tank if the bath element is bit longer?

And I guess the only way to start getting a full tank of hot water is to get a full length element. Is it possible to add a separate external stat to the lower part of the tank or could this be dangerous as the bath element might never be able to heat down that low?

slave1

Photos, we can't assume element power here, my elements are identical power top and bottom. There should be a metal surround on each element that you can screw off via small nut and that MAY show element power. If your bottom element is turning off quickly (thinking max temp reached) then you will only have half a tank of hot water. It could be nothing to do with the EDDI, your bottom element could require a new temp stat or even a simple reset (should be a tiny white/black button to depress when you screw off the metal surround, if it clicks when depressed then it's reset) due to high voltage incident in the past.

If you're not comfortable taking the element cover off then don't, up to you

graememk

https://www.boards.ie/discussion/comment/120247264#Comment_120247264

Yeah leave priority at 1, the higher power one is the longer one.

Theres a few options

A longer immersion,

An external immersion, a Willis immersion will heat the whole tank.

Or a de stratification pump, this can mix up the tank allowing all of it to be heated, if you get a relay board for the eddi, it can be controlled from the eddi.

https://www.boards.ie/discussion/comment/120249286#Comment_120249286

It's one of these immersions, that go in from the top, that share a thermostat

https://www.heatmerchants.ie/heat-merchants-36-dual-immersion-element-immersion-u47239

not 2 separate immersions. That usually come in new tanks.

Redlim

Thanks @graememk ,a few options for me to consider there. You are correct that my immersion is at the top and pointing down into the tank. I have added a picture below.

@slave1 mentioned the metal cover. Is there usually a temperature dial under the cover that allows adjusting the cut-off? If I was able to raise this a few degrees then I'd have more useable hot water perhaps.

Hellrazer

In my case the immersion was tripping the rcds and it was kind of a rush to get the immersion fitted - It had been in the tank for probably 40 years.

I couldnt find a 36" one anywhere and ended up with a 30".

My installer said it was better to only connect one element of the Immersion - the long one as my water was supplemented with gas heating.

This means it heats from the bottom but like @Redlim mine was only heating the top 2 thirds of the tank as the element was slightly shorter than the one that came out of the tank - So what I did was limit the Eddi to 1.0kw - 1.5kw as recommended on the Eddi forums.

Its heats slower but theres a lot less stratification and Im getting almost a full tank now before the max temp on the eddi kicks in. What I reckon is happening is that with the slower heating the colder water has more time to drop to the bottom of the tank as its denser and is getting heated so Im getting a better volume of hot water.

https://myenergi.info/eddi-disable-tank-1-t6705.html

Im going to experiment with this and see how it goes over Summer. I might need to increase the thermostat on the immersion as at the minute the gas heating is also contributing to the hot water tank heating.

But for a couple of days last week without the heating on the eddi supplied enough hot water without gas top ups and we had a full tank of hot water.

Im considering fitting a new tank next year but this seems to be working for the minute.

Redlim

That's interesting, thanks @Hellrazer. I guess at this time of year that concept should get tested automatically as the Eddi isn't normally diverting at full power anyway. Definitely something I'll keep an eye on though.

You mentioned you might adjust the thermostat in the immersion. Is that thermostat under the metal cover like the one in my picture earlier?

Hellrazer

https://www.boards.ie/discussion/comment/120258561#Comment_120258561

Yep its under the cover - probably a small philips screw or flat head.

cobham

Trouble tonight with cold water from tank despite morning and evening boost set by timer and a day of good sun. No one was using hot water during the day but tonight it is virtually stone cold. During the day the Eddi was displaying two blue lights on and 'maximum temperature reached'. Something very wrong but where to start?

It would not let me do a manual boost as it said 'max temp reached'.

I think problem is with the MyEnergi app which is displaying some yellow warning triangle.

graememk

https://www.boards.ie/discussion/comment/120267193#Comment_120267193

check the thermal button on the immersion, it might have got too hot. (and appear as max temp reached to the eddi)

cobham

Where is that located? maybe should turn off the Eddi? and reset??

graememk

https://www.boards.ie/discussion/comment/120267341#Comment_120267341

take a pic of the immersion thats in your hot water tank and we'll go from there.

cobham

immersion.jpg

Is this enough?

graememk

https://www.boards.ie/discussion/comment/120267624#Comment_120267624

Not quite look at the very top looking down there possibly is a little red button, that you can push in with a pen

cobham

Right I have done that and the Eddi lights have turned off. I had a duvet over the top of the immersion ....wrong?