In Blog, Inverters, Micro Inverters & Optimisers

ABB inverter logoABB is attempting a comeback to the residential solar market with the release of their new ABB inverter. The inverter manufacturer gained an unfavourable reputation in recent years with a problem they inherited – the Aurora. However, ABB has rebuilt their new inverter from the ground up. In this post, I’ll first discuss the impressive history behind the engineering conglomerate called ABB. Next, I’ll look at the build of the ABB inverter, pointing out what it has and what it hasn’t included. Following this, I’ll look into the operation of the ABB inverter discussing temperature and heat, and its flexibility in solar design. Finally, I’ll give my view on what ABB is now infamous for – their warranty.

Joseph from ABB

For this post, I went overboard to get the full story. I didn’t just test the ABB UNO 5kW inverter in my office for a few months. It wasn’t enough just to meet with Joseph and Adrian from ABB Australia to fact check my blog. This time I also flew to Germany and shared lunch with a team of ABB engineers as we discussed the new UNO – as you do.

A little bit of history

ABB historyABB ‘s history goes back to two companies that both began in the late 1800’s. We’re talking around the time that Thomas Edison said: “We will make electricity so cheap that only the rich will burn candles.”

After about a century of trading, the two companies Allmänna Svenska Elektriska Aktiebolaget and Brown Boveri merged. In the 30 years since they have become one of the biggest conglomerates in the world. On 1st of May 2014, ABB completed their acquisition of a little solar company called Power-One. At the time, that “little company” manufactured what many considered the worlds best residential solar inverter. Power-One had named their baby the Aurora. When ABB took over, they ditched the Power-One and Aurora branding, and it became known just as the ABB PVI inverter.

ABB eo31That’s where it all went pear-shaped. The glorious Aurora / ABB inverter started falling like flies – the EO31 fault being the main culprit. This is where I should be telling the heroic story of how ABB honoured their 130-year-old reputation and repaired or replaced every inverter within a miraculous 24 hours. It didn’t happen like that. I’ll tell that story at the end of this post. For now, let’s accentuate the positive.

As simple as ABB.

The Power-One Aurora seemed like a well-designed inverter, but it had internal components that let it down. What does a company with a 130-year history do to re-enter a rapidly developing market?

The clever people from ABB met (as history will embellish it) at a little sidewalk cafe over Campari and Gin, and penned the following on a napkin.

abb spreadsheetRumor has it that at that French cafe the phrase was coined:

“A little bit from column A and a two bits from column B.”

Bring it on, ABB

So let’s have a look at what ABB have done. Is it really two parts Fronius with all the goodness of the Aurora?

The ABB inverter build

Ford falconWhen I was a whipper snapper, my dad had a 1961 Ford Falcon. When I first “popped the bonnet” on the new ABB inverter, happy memories came flooding back of my days climbing in the engine bay of the Falcon to change the spark plugs.

ABB built their new inverter old school strong. That’s not surprising considering the engineering giant manufacturers the UNO in Italy. The “engine bay” is spacious, the heat sink is oversized, and the filters for the AC and DC are huge.

ABB inverter internals

It’s got a screen!

Hallelujah! It seems inverter manufacturers are moving away from screens because of high failure rates, and forcing us to rely on wireless monitoring. However many inverters will not be connected to WiFi for their lifetime, and “directly connecting” to an app isn’t everyone’s forte, so a simple screen is a necessary backup.

Plug it in

ABB chose to keep with “plug in” connectors. They claim this makes the install quicker – I’m not sure about that – but it reduces the chance of water entering via damaged conduits or condensation entering through inadequate seals.

It’s Light

The 5kw ABB inverter inverter is 15kG. That’s heaps lighter than it’s 26kG predecessor and just lighter than new SMA 5kW (16kG).Weight matters when the installer is trying to hang it on the wall, and it’s good to know that inverters are being manufactured with fewer natural resources than before.

Load Control

While the ABB 5kW inverter does not come standard with the ability to heat a hot water system with excess solar power, you can purchase an additional communications card for that purpose. This card is also required for export control. As we’ll discuss later, this feature is not fully ready.

DC Isolator

The version shipped to Australia at the moment does not have a DC isolator inbuilt. That’s because we have a stupid regulation about inbuilt DC isolators that will hopefully be overturned soon. If the standard does get changed, the UNO will be modified to include a DC isolator. This will reduce installation cost and increase reliability.

The “NO FAN” fallacy

SMA fan

I recently wrote an article on the new SMA inverter declaring it “fanless” because:

i) I couldn’t see it

ii) I was lead to believe this by SMA and,

ii) the spec sheet says it is cooled by “convection”, rather than by “fan”.

It turns out the term “convection” is ambiguous, I was misguided, and the SMA does have a fan. Just a teeny-weeny one.

 ABB Au Naturel

ABB fan

ABB state their inverter has “natural cooling”. I wondered what they mean by “natural cooling”. Does it mean:

A) “Don’t worry, we don’t use fans like Fronius, so we are super reliable”?  Or…
B) “We used No artificial colours or flavours in the Chinese manufacture of our cooling fans”?

I found a fan in the ABB inverter. I can therefore only conclude the fan has no artificial colours or flavours.
My point is, the ABB inverter has an internal fan – just in case, like me, you would presume otherwise.

The operation of the ABB inverter

I didn’t do extensive testing of the ABB inverter because its claims were not extraordinary. It’s just a robust inverter that inverters DC power.


The weighted efficiency of the ABB inverter is 97 %  which is 0.6% better than the Aurora and the Fronius Primo.
Baby steps in the right direction. With the price of panels today, inverter efficiency has become less of a talking point. However higher efficiency means less heat, and less heat means longevity.


ABB inverter temperature testing

I tested the temperature of both the ABB inverter and the Fronius inverters when they were running at 2500W in an air-conditioned room using probe thermometers. I left the lid on the Inverters, and took the temperatures over three days. I took the measurements at various locations, and the Fronius always ran cooler. I took these measurements at the top of the capacitors. In other locations, the variation was much larger.

ABB inverter thermal image

This thermal image shows why the Fronius (left) runs cooler. It relies on three fans and a small heat sink to pump the heat out of the top of the small heat sink.

The ABB inverter (right) relies on natural cooling, which is referring to the huge heat sink on the back – and an internal fan with no artificial flavours or colours.

Design flexibility

ABB UNO Specification Datasheet

The input parameters on the 5kW ABB inverter are similar to the good old Aurora. Let have a look at some of the key specs:

  • 5000W nominal
  • 5150 max
  • 3500W max per MPPT (the Aurora was 4kW)
  • 600V max open-circuit,
  • 90V min operational.

Say Whaaat?

5150W max? 3500W each MPPT?  Seriously? If you took the ABB inverter spec at face value, you’d never buy one.
The good news is ABB was just joking. What the spec means is the maximum that each MPPT will convert is 3500W per phase or 5150W in total.

But if our job was inspected by the CER, they could fault us for being non-compliant with the specification!!

They could, but then you reply to the CER with an email from ABB like this:

ABB inverter email

In short, the ABB inverter is an extremely design friendly inverter. If we needed to, we could put four panels facing north on MPPT1, ten panels east and ten panels west on MPPT2. (Some installers will say you can’t split east and west on 1 MPPT, but you can. I’ll cover that in another post soon.)

ABB inverter Online monitoring

Earlier this year I met for lunch with a team of ABB engineers at Intersolar in Germany to try to gain a better understanding of their upcoming product. I was thrown so much information about the online capabilities, and I left the meeting feeling extremely optimistic about their new product. This new platform would give us as the installer the ability to:

  • Monitor self-consumption and export power
  • Identify shading issues by scanning the inverters MPPT
  • Remotely adjust hot water relay parameters
  • Remotely adjust grid parameters
  • Allow for automatic microprocessor updates

This all sounds great. However, none of it is available yet. The ABB inverter still runs on the old “Auroravision” platform which was great a few years ago when we were installing Aurora inverters, but the bar has been lifted. Most notably is the need for consumption monitoring and the ability to adjust the hot water relay parameters. ABB didn’t give me a clear indication of when they would release their new monitoring platform, but the vibe was “next year”. When it is fully released, It will become a serious competitor to the Fronius Primo.

ABB inverter Warranty

Currently, ABB has not released their new inverter terms and conditions. That’s uncool. However, what we do know is it has a 10-year full warranty until the end of 2017. I’m looking forward to dissecting the new T’s & C’s.

We can’t ignored that ABB’s warranty process in recent years has been pathetic. It’s not that they didn’t honour their warranty, but ABB’s supply of warranty replacements just did not keep up with the demand. To make it worse, it felt like communication was poor during the warranty process. To be fair, how many times can ABB Australia call to say “we still don’t have your replacement inverter”. The warranty process left the solar industry jaded with ABB – many installers will never trust ABB again.

It would be easy to point the finger and say that ABB should have been more like Fronius when they suffered through their IG15 disaster. However, the number of Fronius IG15’s installed in the Solar industry’s infancy is dwarfed by the number of Aurora inverters installed at the height of the solar industry.

I’m inclined to see the positive. Although there were long delays, ABB generally honoured their warranty. They hopefully learned from their mistakes and spent years designing what will most likely be a reliable inverter. However, they will need to pull a rabbit out of a hat to convince other installers. A good start would be a guaranteed inverter replacement time with compensation carrot if the timeframe is not met. It would be even better if ABB stated that clearly on the yet to be released terms and conditions.


The new ABB inverter looks strong. It’s got a screen, plug in connectors, it’s light, and it has the option for hot water load control. Unfortunately, it doesn’t have a DC isolator, but that may change. The ABB inverter’s massive heat sink does a good job at “natural cooling”, but don’t be fooled by the term, because it still has an internal fan. ABB have made their new inverter super flexible with its design parameters, however, they are yet to release the updated online monitoring. If ABB fully implemented a new online monitoring platform, it may be a contender to Fronius. While installers and customers are jaded with ABB because of their warranty experience, I think ABB has the ability to pull off a ‘Lazarus” and get it right this time. It may just need a rabbit and a hat, or a carrot.

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46 Comments on The new ABB uno inverter review (2017)

Devina Rogers said :Guest Report 9 months ago

Hi Mack, we recommend Fronius and here's a video explaining why:

    David G said :Guest Report 2 years ago

    FIMER now offers a full 10 year replacement warranty. My brand new ABB-UNO-DM-4.6TL-Plus B was installed July 31 2019. (I believe my warranty runs out in 2028) Now the LCD won't display and the unit is not supplying power to the grid. I was told at the time these UNO Italian units were a market leader. My last inverter (can't remember the brand) lasted 5 years. My previous supplier and electrical solar installer now is much more interested in installing (warranty work) rather than fixing and gives unreasonable time frames like 3 weeks to ensure he doesn't ever get the job.

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    Mark C said :administrator Report 3 years ago

    Hi William, I don't like your chances of getting it under warranty. If it was 5 years and 2 months, they would honour it. The relay can be replaced if you can find someone who is into fiddling around with things like that.

      William Beattie said :Guest Report 3 years ago

      Great article Mark; very clear. My friend and I inherited a solar system on our house when purchased in JuLY 2021 with an ABB UNO Selectronic PVI-3.6-TL-OUTD inverter with a faulty relay (INT E031 error code). It’s around 7 years old (week 1442 (year/weeks of year). Fimer have taken over all ABB inverters but I can’t get them on the phone. I believe that it should have a warranty honoured under Australian consumer law as 5 years jurist isn’t ‘merchantable’ for this device. One would expect more life expectancy under the law so I’m pushing for a replacement. Best wishes, thanks for your article

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      Elliot said :Guest Report 3 years ago

      Hi Michael. Both ABB and SMA are decent inverters. Our recommendation is always going to be Fronius though. The Fronius Gen24 is the inverter with the power point that comes online in the event of a blackout during the day.

        Michael Kelly said :Guest Report 3 years ago

        First, Thank You for putting out this info. My solar company wants to replace an SMA inverter which has lasted me 10 years. They want to replace it with an ABB 5.0 inverter. Has the situation with ABB changed since you wrote this story? Is this something you think I should use or stick with an SMA inverter? I saw one that has an outlet to use during blackouts. Thanks for any advice you can give me.

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        aran mounce electric said :Guest Report 3 years ago

        looking for the warranty form for abb micro inverters please advise thanks

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        Mack Carson said :Guest Report 4 years ago

        Hi I have a 2010 Aurora 3kw with German Bosch panels 3.2kw 12 yrs into the 15yr Extended Aurora wty. NEVER missed a beat so far. Roof being replaced (Hail damage). System probably being replaced Will this new company (ABB) Inv be same as .same as?., I AM more than happy with the original Inv. Or should I be going for a Fronius/ Sunny Boy unit, with LG Panels?.

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        kyle clark said :Guest Report 4 years ago

        Amazing how things work for different people. I'm no expert but I believe in solar and have 12.5 kw on my roof. Installer used 30 enphase and then I got a great buy, at the time, on another set of 20 sanyo/panasonic HIT panels so this time my installer used the Aurora microinverters. Started installing in 2012. I'm not sure the enphase all worked for even a year. There's always 6 or 7 down at any given time and I had to threaten to sue enphase to get them to do anything at all about it. I still have 6 down now. The Auroras? Have worked since day one with not one hour of down time. All I get from Enphase is wanting to ignore their warranty and sell me new and improved units. Appears it will be easier to just sue enphase one inverter at a time in small claims court. On top of everything else they've pulled Enphase reps lied to those of us with problems. That's about everyone. Anyone who doesn't believe me can contact me for the info to see the Enphase control site for my panels. Enphase sucks.

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        Mark C said :administrator Report 4 years ago

        Wow, nice story Michael!

          Michael Muller said :Guest Report 4 years ago

          Good morni g. I had a PV system installed about 9 years or so ago. It came with an ABB Aurora and worked well for over 9 years. I was asked to provide my new FIT reading and the reading seemed familiar. On checking it was the same reading meaning, inverter no workee. I looked for replacements but did not know which one I had so I called ABB/ Powerone and was told hang on we need some info . I was asked for the WK number,serial number and Wk number. I gave this and was told much to my amazement it still had 4 years of warranty left. The guy I was speaking to said whilst I was on the phone he had arranged a new unit to be dispatched to my nearest ABB approved installer. Within 10 days the new unit was installed by Solar Services and the installer was a gentleman. He made a great and tidy job and was brilliant. I was told I still have 4 plus years of warranty. The new inverter is working much better than the original as over the past 5 to 6 weeks we have been getting up to 12pounds daily and this is only April for goodness sake. I am so glad I paid a little extra to get a German Inverter instead of some Chinese or Philipean thing. I cannot speak highly enough of ABB inverters as they were known but now owned by FIMER I believe. Thanks so much. More then satisfied customer. Michael Muller New Byth Scotland.

          • Ab535pd
          Mark C said :administrator Report 4 years ago

          Hi JP. Interesting review. ABB has sold to Fimir who will apparently cover any warranty. Is it still in warranty?

            JP rodrigues said :Guest Report 4 years ago

            I have an abb 3kw inverter and of course it has died. Working in electronics and knowing abb exited the market I decided to try to fix myself. I see why they exited the market. The actual inverter electronics are pathetic. Most of the electronics in the inverter is for switching and monitoring. The actual inverter is so small I cant believe its rated 3kw. I have cheap plug in car inverters practically with more inverter section electronics. This thing is so pathetic its not even worth rebuilding. Unfortunately they are already out of business so I cant protect others from making the same mistake. Evidently I need to pull apart my next inverter to make sure they arent just as cheaply made.

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            Mark C said :administrator Report 4 years ago

            It probably is time for an update, especially now that they are sold to FIMIR. However I have talked to ABB a fair bit in 2019 and to be honest, nothing is impressing me enough to go to the effort of reviewing the inverter again. I'll wait until I hear more. If the new company FIMIR bring out something new, it would be interesting.

              Moh said :Guest Report 4 years ago

              Hey Mark, thanks for the great review... i think and after almost 3 years the review need to be updated to reflect the results the ABB inverter is achieving and any setbacks. thanks

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              Mark C said :administrator Report 4 years ago

              Hi Sriram, apologies for the delayed reply. Call us on 32683836 and we'll help you out.

                Sriram Rangarajalu said :Guest Report 4 years ago

                Hi, I bought solar system from mcelectriclas by the end of 2014 or early 2015. The system has been effectively functioning since installed. I found an error yesterday which says E031 referring to “Output relay damaged”. Could you pls suggest me the way forward. I have left the pv system isolated from the pv array and the grid. Thanks Sriram R

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                Steven said :Guest Report 5 years ago

                Hey Mark, Thanks again for the witty and informative posts. Keep up the great work legend, looking forward to meeting you soon :)

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                Steve P. said :Guest Report 5 years ago

                I have two ABB solar inverters that were installed in 2015. Inverter 2 began making a clicking sound in August 2019 and shut down. My original electrician contacted ABB and they refused to honor the warranty and replace inverter 2! They sai that there was “moisture” in it and it void the warranty!! How could moisture get in it? I live in southern New Mexico and both inverters are protected from rain with a cover! I will never do business with this unethical company again. By the way, the replacement inverter cost me $1,200.00!! All my solar energy savings gone!!

                • Review of ABB Uno inverter
                Mark C said :administrator Report 5 years ago

                Hi Stephen, E031 is a circuit board failure. I have heard some people repair them, but most commonly replaced. As far as I know, no inverter manufacturer resets the warranty when you get a replacement.

                  Stephen Bland said :Guest Report 5 years ago

                  I have an Aurora pvi5000 OUTD. The original inverter was replaced under warrant in 2015 the Fault was EO31. The replacement inverter now has the same fault ABB have informed me this inverter is not covered by a warrant. I thought under consumer law that there would be a manufacturers warranty on the replacement inverter. Is this not the case. What is EO31 and can it be repaired. Cheers. Stephen

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                  Grant said :Guest Report 5 years ago

                  Had a Aurora PVI 3.0 installed in June 2011 , it failed the same day , replaced a further two times 2013 and 2015 till October 2017 at which time it was out of warranty. Went ahead and purchased a UNO-DM-3.3-TL Plus. It has 20 x 245kw Q Cell plus panels - which have also been replaced under warranty due to water ingress . Providing the warranty is there ( 10 year ) I am happy with its wifi monitoring and general performance - have a Fronius inverter also and regard the Uno as superior in its monitoring.

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                  Jen said :Guest Report 5 years ago

                  It took months to get my inverter changed. all that power wasted I wouldnt go with abb again.

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                  Mark C said :administrator Report 5 years ago

                  Hi Stephen, That's a worry! Was it the new model ABB I mentioned in my review or the old ABB/Aurora? (the new one was released in 2017).

                    Steven Branch said :Guest Report 5 years ago

                    After much deliberation finally had solar installed, unfortunately the ABB inverter failed, no alarms just no output one week later they changed the inverter and guess what it also failed. not the sales or installers fault but bloody frustrating having a huge paper weight sitting on my roof doing nothing while I still pay for it, sales suggested swapping inverter for a Fronius

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                    Iris Black said :Guest Report 5 years ago

                    Had installed solar panels installed with Aurora inverter in April 2012 with Solargain. Error E031 appeared on 22/12/2013 replaced 9/1/2014. E031 appeared in March 2014 once again replaced. Error E031 appeared 22/4/2019 will not replace as out off warranty, as warranty starts from when first installed. They wanted us to buy another five year warranty when they replaced it in 2014. They stay inverter has 5 year warranty, not one off our replaced inverters lasted more than 3 years.

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                    Andrew Aitken said :Guest Report 5 years ago

                    I have a UNO DM 5.0 TL PLUS which was installed a little over a year ago. It's 23 Jan now and even with cloudless conditions the inverter maxes out at 4.62 kW. Grrrrr! The output curve plateau's out at 4.62 kW. Most annoying that I will have to follow up on warranty issue with ABB. There at no error warnings on the unit at all.

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                    ken anderson said :Guest Report 5 years ago

                    After waiting for 4 months I finally had my failed inverter swapped out. I do hope it does not present error 031 like the last ones have. ABB are a disaster with customer care. I have 2 inverters fail in 5 years. ABB informed me that my warranty was 1 month past the original installation date and therefore would not replavreplace it, wanted me to buy a new one. The only reason why they came to the party is because I got Consumer affairs involved on the point of implied fit for purpose and warranty. Consumer affairs acted very quickly, thank you! Never will I buy ABB again.

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                    chris said :Guest Report 5 years ago

                    The new abb inverters are still failing with the same issues error 31. Current inverter is nearly three years old and failed in the same fashion Aurora inverter did. The inverter does live in a open very covered area. Customer service is horrible with ABB

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                    Mark C said :administrator Report 6 years ago

                    Hi Raphael, Have you contacted ABB. They recently told me they don't hold the 5-year warranty timeframe strictly, and I think especially in this case.

                      Raphael Dingli said :Guest Report 6 years ago

                      My Third ABB 5 kw inverter in under 6 years just died again. It’s is eight months old. ABB Advise that the warranty is only for six months. Has anyone sucessfully utilised Australian Comsumer Law and won under the reasonable expectation clause?

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                      Mark C said :administrator Report 6 years ago

                      Sure Andrew, I'll copy you into an Email to ABB. I think we'll find Australian Consumer Law is better than that. I'm due to speak with ABB about an update on this blog, so thanks for your comments - disappointingly interesting.

                        Andrew said :Guest Report 6 years ago

                        I got an ABB inverter, the company i got it from has stopped running and i got the E031error. I tried to go to abb about this and they said its 15 days out of warranty and wont help me. I called again and they said sure we will help you and then get an email 5 minutes later saying our mistake we wont help as its out of date i saw the picture wrong. This has been horrible. Even if it is 15 days out of warranty you think they could help some how

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                        Mark C said :administrator Report 6 years ago

                        Hi Kerry, If I were you, I'd get a Fronius Primo inverter (around $2400 installed). Make sure they connect it to monitoring and consider getting a smart meter for consumption monitoring (around $330).

                          Kerry Bucknall said :Guest Report 6 years ago

                          We had an 3.6kw Aurora Inverter installed in June 2012 which was replaced under warranty several years later because of multiple errors. That Aurora inverter has just broken down with an E031 problem which I believe is a regular problem. Of course warranty, (and I believe this is an Australian standard), is from the original installation date so we are not covered this time. So, not happy, looking at a third inverter in just over a 6 year period. I am at the moment waiting on a price from ABB.

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                          Mark C said :administrator Report 6 years ago

                          Hi Stephen, My first guess would be it is winter, so production is low. I just looked up a new 6.6kW system we installed last year. It's facing west-north-west. It is maxing about 4.2kW this time of year. ... ... ... ... The maximum panels you can install on that inverter is 6.6kW (unless you have a battery installed) so installing 1 more panels is not realistic. ... ... ... ... Re: "Drops out an inverter during the day" that could be it going offline due to high grid voltage, IS your system monitored online? I'm curious Steve, who did you buy the system off? Being a 5kW uno, it must have been recent. Are they not interested in helping?

                            Steven Jesshope said :Guest Report 6 years ago

                            On a 5 kW abb uno inverter can you have more than 3500w on each string, have a 6.3kw system with 10 panels on one and 14 on other, Lucky to produce 4kw max peak and drops out on inverter during the Day at time more than not. Any ideas would be handy.

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                            Mark C said :administrator Report 6 years ago

                            Hi Mark. Yes, you can monitor the production via the screen. ABB inverters generally have a helpful display screen. I'm not sure about downloading data from an inverter from 2011!

                              Mark Taylor said :Guest Report 6 years ago

                              We put a 2.5Kw solar panel array up in 2011 and paid an additional $1000 for the 'better' inverter which was the Aurora. We have had no problems whatsoever. It is inside our garage though. We were told you could download the data to monitor it but the twits who installed it never showed us how to do that. Anyway you can see it on the LCD panel.

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                              Rowan Walk said :Guest Report 6 years ago

                              Still remember my first introduction to the Power-One PVI Aurora, 2010 when there was ridiculous uptake of PV in Europe and America so Australians were left with the industry scraps. "Multiple MPPT!!!" Extremely beneficial when the common module is 170w and requires x 12 to achieve 2kw. They need a ridiculously good monitoring solution as the new series are notfinished as well as others on the market. Apart from that, time will tell.

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                              Atoshipping said :Guest Report 6 years ago

                              Informative Post

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                              futureservices said :Guest Report 7 years ago

                              I’ll be sure to bookmark this in case anyone in my network needs it. Thanks. Electrician Sydney

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                              Peter Fagan said :Guest Report 7 years ago

                              Hi Mark By highlighting the initial capital letters in "Brown Boveri", you make clear the origin of the "BB" in ABB. With Allmänna Svenska Elektriska Aktiebolaget you highlighted the initial capital in the first word "Allmanna" - to show where the "A" in ABB comes from. Looking at all initial caps in this name, it becomes apparent that Allmänna Svenska Elektriska Aktiebolaget abbreviates to ASEA. From Wikipedia: Allmänna Svenska Elektriska Aktiebolaget (English translation: General Swedish Electric Company; Swedish abbreviation: ASEA) was a Swedish industrial company. In 1988 it merged with the Swiss company Brown, Boveri & Cie (BBC) to form ABB Group. ASEA still exists, but only as a holding company owning 50% of the ABB Group. Just a bit of history :-)

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                              Ian G said :Guest Report 7 years ago

                              Thanks for the review of the new ABB inverter. I'm on my third "Aurora" style inverter in 5 years. They seem to get the dreaded E031 fault like clockwork after 2 years. In my experience the ABB warranty service has been good. The first replacement came in a few days, while the second took a bit over a week. The worst part is that if (or more likely when) this one fails it will be out of the 5-year manufacturer's warranty period and the installer is no longer in business (no prizes for guessing who!) This one is a bit different to the others, so perhaps there was an interim fix - let's face it, they had to have worked out where the weakness was with all that experience.

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                              Mark C said :administrator Report 7 years ago

                              Thank's Steve! A quote left out of my post was from a large electrical wholesaler. A while ago I said to him "I'm surprised such a huge company like ABB have been so bad with their inverter warranty procedure. His reply with long experience in ABB product warranty (switchgear etc) was telling ... "I'm not".

                                Steve bourke said :Guest Report 7 years ago

                                I am an electrical engineer in the industrial area. I would not touch abb products with a 40ft barge pole. Crappy products made in china and high cost and incompetent unreliable after sales service. This opinion is based on 25 years across all abb products from lv and hv switchgear and instruments. Stay clear and tell your customers to be very wary.

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