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Just checking: your PV panel frames/rails are grounded to earth, yes? You shouldn't have regular arc faults in a normal installation which has all good connections etc.

My father last afternoon: "Where did I put my sunglasses?" ...searching his pockets... "They are on your nose." Jeebus....

Related question: what is the bookkeeping write off period on the solar equipment? 5 years? 10 years?

Connect the inverter to the grid via a fuse. Install the CT correctly on that LIVE input wire. Turn off (If you want to) the grid by turning off the fuse. When you need the grid, just turn on the fuse. No need to bond anything unless you have special conditions/regulations in your country that...

But again...WHY? As Steve mentions the power use is MINIMAL. And if you consider a BT module as a security risk with its max 5-10m range...well, there are other stuff to worry about.

Running only the Chargeverter to maintain your batteries and not connecting the inverter to the grid gives you much cleaner power if your grid has noise. I do this here due to a noisy grid. See the link to my battery build thread in my signature.

Was there a temp sensor lead in the kit that you forgot to install? Aka it howls because of no signal back from said missing lead?

Its always on. There is no setting.

Minimum 50cm / 2 feet (ish) space all around the inverter and a meter (3 feet) in front.

Did you remember the B+ cable (I think thats what its called in the manual) also to the last cell (16) and not just the sensor? That one is the last on the number 2 connector (the long one).

Your climate is something like England so I figure producing much solar will be an uphill battle, yes? Especially companies would like their power to be up and running every day. As mentioned above ^^ ask a local sparkie for rules and regs in your local market for resellers.

Not much. Here the dust is around max. 5-10% less production. I let the local rain flush mine off, ca. 30 degrees roof mounted. If you have big amounts of calc in your water, do not use a hose. There will be calcium spots when they dry. Aka better with natural rain - no calc.

Qisocell was at 30-60 Euro/cell EVE 280K the other day. Depending on volume. Plus freight.

Btw. the dongle: does EG4 require a 2.4ghz SSID to connect to as many other brands or will it work with 5ghz? Could this be the issue?

This ^^. Remove 2 of your 18 panels from the string and all is good. Run single string with 16 only OR do 8+8 2p.

Turn OFF Activate battery. Only for damaged or extremely low batteries and not to be active in normal use.

Well, it's percentage wise 8 times more likely to fail than just the one unit... Just sayin' ...

I would set it up to Load first, then the PV surplus would charge the batteries and then the leftover should be sold to the grid if you have an export agreement with your PoCo.

After almost 2 months now running the EG4 Chargeverters in a vertical position to let the hot air escape easier works very well. The surface temp on the top part (or right side if horizontally - exit) of the EG4 has lowered by over 20-25 degrees C. So absolutely worth it to mount them vertically...

Roughly the same here. 3.55V charge and 3.45V float per cell. Works very well. Btw. the only time your SOC will be correct is every time your batteries are really full/100% and the SOC resets itself ^^. I just look at the voltage of each cell and just ignore the listed SOC...3 different BMSs and...

All the above plus: are you sure the panel string is connected in SERIES and not parallel? With parallel you will never reach the minimum voltage.

I would go down to 8 in series. 9 are too much IMO.

I actually thought of rotating the screen after I posted the photo above. When I get some free time and everything else on the list has been done (yeah that will happen)... Low, low, low prio ^^ :)

Vertical is the only way to go @timselectric ^^ ;) And yeah they stay cooler than horisontal...

I'm glad I needed 2 last year but bought 3 pcs. just to have an extra spare. The yellow color is a but much though...thinking maybe I should paint them white...hm... ;)

Or it might have finished the main bulk/absorb charge and changed to the float balancing.

Turn on WiFi hotspot on your mobile phone and link the inverter to that...

Ye they are Smokin'! :cool: :LOL: ;)

Click on my battery build thread in my signature below to see how I solved my ventilation for the battery box. In short holes and mosquito netting.

My hobbies include managing a sizeable property with all its upkeep inc. water, electrical etc. In addition to interest in cars, built my own 73m2 Home Cinema, building amplifiers, Computers/networks as both work and hobby, field competitions with handguns, woodworking and everything else...

Growatt has NO follow up of any repair/warranty issues. Experienced this myself. Stay clear of the brand if you want the security of a warranty.

76% is way over a normal indoor room. Those are around 30-40%. Install a dehumidifier which should be run at all times and emptied.

I am installing phase 2 of panels this spring. Foresee another battery this fall ^^ :) Will it stop? Nah...I'm having fun...

Nvm. :LOL:

Same. ^^ Changes mine with the summer and wintertime changes spring and fall.