Delta solar inverters reviews

Based on 71 ratings Aus Ranking

  • 5 star 26
  • 4 star 38
  • 3 star 2
  • 2 star 4
  • 1 star 1

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About Delta, Solar Inverters

Delta solar inverters review

Delta Customer Service: 1300 335 823

Delta Energy Systems is a a subsiduary of multi-billion dollar global company Delta Electronics Group. It makes all sorts of industrial, medical and consumer electronics as well as solar inverters.

The company commenced operation in 1971 and has been producing solar inverters since 1999. For the residential market, Delta's H series (Home Series) is the current line, available in capacities from 2.5kW to 5kW. The company also offers the E5 that can be paired with its Bx6.0 battery.

Back in the day, when I worked as a control engineer in a nuclear power station, we used Delta power supplies for reactor control systems. In my experience, they know how to make reliable electronics!

One of the strengths of Delta inverters is that they can get jolly hot (65 degrees celsius) without derating. So they are a good pick in the hotter parts of Australia.

Delta Inverter Warranty Notes

A 5 year warranty is offered on Delta Home Series solar inverters (and its Hybrid E5).

The company's Australian office is located in Notting Hill, Victoria, so local warranty support should not be a problem. However, the first point of contact for warranty issues should be the business that installed your Delta solar inverter, as they bear the responsibility for warranty work.

In the scenario the installer/company is no longer around or otherwise uncontactable, Delta advise that Australian should contact their warranty department on the number listed above.

Delta will then email the customer a warranty claim form, which needs to be filled in and returned. Delta will then arrange for the repair/replacement of the inverter.

Delta Solar Inverter Reviews

Bought From: Marriott Pacific Electrical Show additional information
Bought From: Supercharged Solar Show additional information
Bought From: Green Wiring Show additional information
Bought From: Supercharged Energy Show additional information
Bought From: ShineHub Show additional information
Bought From: Your Choice Solar Show additional information
Bought From: Sunstainable Victoria Show additional information
In twelve months it dropped off the internet twice and was easily reconnected , so no real issues
Bought From: United Solar Energy
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My Delta Inverter , Solivia 5.0. Was Installed on or about 3rd Dec 1912, supllied by Origin, in Victoria, since it was installed , the inverter used to drop out on its own accord 4 to times a year,then i restart the unit by the following the closure and start up of the inverter, this was reported to Origin, nothing was done.Now it drops out constantly, I have taken pictures and videos of it. When it drops out on the screen it reads.' SYCHRONIZE TO AC'.. It takes on or about 1 minute and sometimes just less for restarting. I have taken pictures of it and also videos, videos just tells the whole story, I have reported back to Origin, the INVERTER, is under warranty, a technician has been arranged to come out and inspect it. Would it be possible if some info was emailed to me, whats causing this problem.
Bought From: Origin Energy
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Spoke to the company, great service.. Australian Company.
Bought From: Arise Solar
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Bought From: United Solar Energy Show additional information
Inverter seems extremely reliable - no moving parts, screens, obvious points for failure.
Setting up the app to monitor production isn't super straightforward, but we figured it out. Once set up, it does exactly what you need it to do and nothing more.
Has a 10 year warranty through installer, rather than the usual 5.
Bought From: Advanced Solar Technology Geraldton
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Bought From: Supercharged Energy Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Works like a charm
Bought From: United Solar Energy
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Bought From: Advanced Solar Technology (North) Show additional information
I was excited to have an app to view the production however the app is not user friendly and cumbersome so it is not worth the bother of logging on, changing to the different wifi and waiting for app to start up. The idea is good but needs some consumer input to improve the ease of use
Bought From: Advanced Solar Technology (North)
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Bought From: Advanced Solar Technology (North) Show additional information
5kW Delta Inverter. The Delta software shows the inverter producing a maximum of 5kW. However we have two separate Engage monitors independently monitoring our solar output and electrical consumption. These show the inverter producing a maximum of 4kW. For example; today the Delta shows we were producing 5kW between 11:55 and 14:50 whereas the Engage monitor shows 4.41kW at 11:55 and 1.74kW at 14:50. The Engage graph is sawtooth whilst the Delta is almost flat line.
Bought From: Advanced Solar Technology (North)
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Bought From: Advanced Solar Technology (North) Show additional information
Cuts out many times per day (usually several times per hour) due to high voltage. Battery rarely charges, on standby. When the inverter is working, it usually feeds into the grid not battery. Occasionally battery charges, may go to full charge but this is rare. Installers blame SA Power networks but when I contacted them they did several readings at night and during day which were ok.
Installers had me sending photos of my inverter to them but I did not get a response from them. After several months they said it was fault of power network and I should phone them. Installers have checked the installation and say it is ok. They have sent data to the delta people.
Currently a stand off. I do not have a reliable properly functioning system.
I have been promised internet connection by salesman and current person I am dealing with but this seems to have lapsed. I would not need to send photos and the problems could be more easily checked.
I would like a system that functions in my situation.
Bought From: NRG Solar - National Renewable Group
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hi
I had to get the first inverter replaced as it had wifi issues but all is great now I would recommend energy assist to any one thanks to George and all his staff when the price of batteries come down down in price I will defiantly be upgrading with them but as i am getting 71,3 c per kwl I will just wait a while and thank you finn for recommending them
ian
Bought From: Energy Assist Group
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Bought From: Advanced Solar Technology (North) Show additional information
No problems - just works.
Bought From: Advanced Solar Technology (North)
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All working well so far, no complaints.
Bought From: Advanced Solar Technology (North)
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Bought 3kw system from Clean NRG in Dec2017. Summer through winter, on bright days, it clocks above 2.5k kWh and occasionally beyond 3k kWh. Satisfied with its performance and no problems so far.
Bought From: Clean NRG
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Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
My system was installed over 1 year ago a 5kw.2MPPT & there have been no problems with the inverter.
Bought From: Heinz Solar Co
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Two inverters were installed 5 years by a company called a Woman Spark based in Malaga WA who provided the worst service I have ever come across, they provide no backup whatsoever, will not return phone calls or emails, I'm currently waiting for two panels & a Delta inverter to be replaced which I reported Dec 6th & still waiting, there must be loads of people in WA having the same problems with this company.
This is the 3rd time my Delta inverters have failed after being convinced by A Woman's Spark sales person that the Delta inverter is the best on the market, bullet proof, be very care full if you have any dealings with this company.
Bought From: A Womans Spark
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We are now on our second inverter. The first one had to have adjustments very early on & was then found to be faulty later on & only producing 800Wh from 17 panels. I contacted the installer & he contacted Delta with an open ended promise of rectification with no time frame. I contacted Delta myself & made my concerns known to them. I received a call from Delta later in the day & their people were at my home the next afternoon with a new inverter which appears to be functioning correctly. I have created a spread sheet & am now tracking output on a daily basis at 8pm each evening when the charge rate drops as the sun goes down.
Bought From: Geelong Solar Energy
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Bought From: Advanced Solar Technology (North) Show additional information
I have tried contacting supplier on several occasions but have never had a response back!

In desperation I have been talking to Western Power, who in fact have been very helpful in assisting.

Problem is the Delta unit which was manufactured in June 2015, and subsequently installed in my premises in January this year continually goes into condition E13, described as Slow Over voltage Rage, because the "grid" is at 258 volts or more. I have called Western Power who have then checked the grid and advised me that it was at acceptable limits so that my Inverter should be working. I have become so frustrated that recently I sat and observed the unit from 8:30am in the morning during the working week only to find that at approx 9:10am into went into E13 at a voltage of 252volts, then for the rest of the day until about 4:30pm it was in and out of E13 like a YoYo!

As a friend of mine commented, how come you have been supplied a unit in 2017 that was manufactured in June 2015? I was also told that the unit had had a software/firmware upgrade...really, doesn't mention that on the factory Test Reports about any software or firmware version!!!
From the time the installer commissioned the Delta Inverter it failed!! He then went to the electrical switchboard and changed a cable only to find that that didn't fix the E13 problem! He then told me to call Western Power to get them to "tap down the local grid" and that would do the trick. He then basically left it at that, other to suggest I call Alex.
I could have purchased a cheaper system as did my friend and saved myself $500 plus the grief that has gone with this whole episode.
I have two options, 1) go direct to Delta and request a replacement, or bite the bullet and buy a new Inverter that will do the job.
Bought From: Advanced Solar Technology (North)
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Bought From: Advanced Solar Technology (North) Show additional information
Very boring. It just works.
Bought From: Geelong Solar Energy
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No problems so far
Bought From: Geelong Solar Energy
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Bought From: Green Wiring Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
I have had no issues - everything running according to plan.
Bought From: Green Wiring
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Bought From: SolarEZE QLD Show additional information
No problems at all.
Bought From: Green Wiring
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The Delta invertor with the Phono panels seems to be a great combination.
No issues at all and the system is performing better than predicted expectations.
Bought From: Advanced Solar Technology (North)
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Convenient and easy to read output information which is useful when deciding whether there is enough power being generated at a particular time to commence use of appliances etc. throughout the day. This equipment is installed in a convenient location in the garage so is protected from the weather and easy to access at any time. Neat and tidy installation.
Bought From: Advanced Solar Technology (North)
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Bought From: Green Wiring Show additional information
Bought From: Green Wiring Show additional information
Bought 2 years ago. I just finished payments to this product. Now it is not working. 20 days ago I have requested a technical support. Thanks to grate service, I am still waiting. Very poor service.
Bought From: Origin Energy
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Bought From: Advanced Solar Technology (North) Show additional information
Bought From: Advanced Solar Technology (North) Show additional information
one year on- no problems with the two inverters that I have with my system
Bought From: Advanced Solar Technology (North)
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Bought From: Advanced Solar Technology (North) Show additional information
Our Delta Solivia Inverter was installed with the System in December 2012. Unfortunately, it failed sometime in early 2014. Because there is no monitoring, and it is down the side of the house where no one goes very often we did not notice until we received an electricity bill with zero solar input. Unfortunately, the company who installed the system was not around anymore, however we eventually found someone and the Inverter was replaced under warranty, no questions asked. The warranty is 10 years parts and labour at it appears to be working properly.
Bought From: Solar 2000
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Bought From: Green Wiring Show additional information
Bought From: Solar Energy Environment Show additional information
Bought From: Green Wiring Show additional information
The overall installation was good however some very unprofessional hand-written permanent marker pen was used both in the meter box and the inverter itself to show voltage and current measurements. A machine-made label or printing would easily take care of this ugly sight which is unfortunately there forever.
Bought From: Green Wiring
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Useful to be able to view daily, weekly etc. stats
Bought From: Green Wiring
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Bought From: Green Wiring Show additional information
Bought From: Green Wiring Show additional information
Bought From: Gryphon Solar Perth Show additional information
Bought From: Solar Energy Environment Show additional information
Bought From: Origin Energy Show additional information
Bought From: Green Wiring Show additional information
Bought From: Clean NRG Show additional information
Bought From: Green Wiring Show additional information
Quite easy to use in terms of data recall but I was a bit disappointed that it wasn't set up by the installers and I had to set the date, REBS buyback rate and other relevant data. I did mention this to the installer who said he would ensure this was done in future but when I checked this out on a friend's system that they installed (on my recommendation) the data on his inverter, also a Delta, was still on the factory settings. Its a very basic inverter but it is hardy and does the job very well. I concede that not many people actually check the data available on the inverter.
Bought From: Kdec Electrical and Solar Pty Ltd
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Bought From: Energy Assist Group Show additional information
Bought From: Sky Power Energy Show additional information
Bought From: Solar Dynamics Show additional information
seems fine to me. Don't REALLY know how it should rate, but I'm happy with it
Bought From: Solaworx
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Bought From: Sivcorp Solar Australia Pty Ltd Show additional information

Delta has 20 solar inverters in our database

Model DC Voltage AC Power Efficiency
DDP-260AB-1 A5926096.00
DDP-260AB-2 A5926095.00
DDP-260AB-2 B5926095.00
EOE45010272 (Solivia 2.5APG3)540 Max249096.00
EOE46010259 (Solivia 3.0APG3)540 Max300096.00
EOE46010260 (Solivia 3.3APG3)540 Max 3300 96.00
EOE46010301 (Solivia 5.0APG3)150-540 498095.60
RPI H3A_02X600V3000VA97.50
RPI H3A_12X600V3000VA97.50
RPI H4A_02X600V4000VA97.50
RPI H4A_12X600V4000VA97.50
RPI H5A 020600V5000VA97.50
RPI H5A_02X600V4000VA97.50
RPI H5A_12X600V5000VA97.50
RPI-H3550300097.00
RPI-M15A10001500098.30
RPI-M20A1000 2000098.30
RPI-M301000V30000VA98.20
SOLIVIA15EUG4TL/EOE4801036210001500098.00
SOLIVIA20EUG4TL/EOE480103641000Vdc2000098.00
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