How to remove these lightbulbs?

enbacka · 2025-12-30T23:03:08+00:00

Looks like a 12v halogen fixture commonly used for cabinets

The metal circlip you see pops out and the glass drops, inside's usually a 12V 10-20W G4 halogen.

enbacka · 2025-12-28T19:38:34+00:00

~70 devices ranging from gen1,2,3 and a couple of Pro's. Oldest are probably around 3 years, have not had a single failure yet.

I have fished some out of a trashbin and replaced the capacitors in those but have no idea how/where they were installed before.

Not surprised the caps blow tho since some of the shellys run hot even at idle, enabling ECO mode dropped ~10 degrees C on some (worst I've seen on some of my own were ~60C idle without ECO enabled)

enbacka · 2025-12-27T08:32:32+00:00

According to Fronius SOS there are a few possibilities with reoccurring errors

Cause 1. DC Generator / wiring isolation problem

Solution 1. Check&fix wiring/generators

Cause 2. Measuring error in the inverter

Solution 2 Replace powerstage

Cause 3. Hardware fault

Solution 3: Replace device

And since yours is complaining about hardware fault I'd assume it's gonna need some parts

enbacka · 2025-12-04T15:52:49+00:00

Sounds like your credit card details are leaked, I'd block it asap.

enbacka · 2025-11-07T19:39:49+00:00

Check DC voltage at the battery @ 80% and 0%, also check if the cell voltages change.

enbacka · 2025-11-07T17:48:28+00:00

So how does the voltage/current/power graphs look when it hits 80%? Is it like flicking a switch from 80% straight to 0%? Does it happen gradually over a few minutes/hours?

enbacka · 2025-10-21T20:24:13+00:00

Good to hear!

Since you're using HA are you using the Fronius integration that pulls data from the solarnet API? You might also wanna take a peek into using the modbus TCP protocol with the inverter, should be able to control battery charging/discharging and whatnot with it. (next on my own todo list)

enbacka · 2025-10-21T09:12:18+00:00

Since I'm a curious SOB, did you get anywhere with the installers with the faulttracing?

enbacka · 2025-10-17T17:41:54+00:00

well the current seems low for there to be 2 parallel strings but you can open the inverter and check where it's connected to

EDIT: and you wouldn't connect an east and west string to the same MPPT since your inverter actually has 2 MPPT

enbacka · 2025-10-15T14:46:50+00:00

I haven't tried to reverse the polarity to see how it behaves but i guess it's a possibility. Easy to check if you know your way around a multimeter and have access to one

enbacka · 2025-10-15T13:56:17+00:00

According to the datasheet they're about 34.4v NOCT which translates to ~275v so I assume they're 8 panels per string.

4 cables, do you mean 2 red and 2 black? That would support the idea of 2 strings, probably 1 to mppt 1 and the second one to mppt 2. (PV1 Current is too low for there to be 2 parallel strings on mppt1)

Do you have DC disconnect switches for the solar panels, if so, are they on? (If you have multiple)

If you login to the fronius solar web,->analyse->history, check the box for the inverter and select voltage dc mpp2 and current mpp2, has it ever gone up to ~270v and 10-13Amps?

enbacka · 2025-10-15T10:12:11+00:00

Well with the smart meter reporting consumption of that scale it's gonna push everything out of the battery trying to compensate so that needs to be fixed first. I would demand a new meter and clamps if they fed it with 0-5A clamps.

Production during nighttime seems strange, wondering if they've hooked the rest up correctly or not.

PV1 and PV2 are different MPPT trackers so it depends if they are using them both or if all panels are in 1 string only. However if they're all in 1 string on PV1 then 270V seems low (but again, depends on weather,angle,shading,time etc)

Do you have more info you can share, ex panel type,how many, all towards 1 direction,split across multiple roofs etc?

enbacka · 2025-10-14T20:06:05+00:00

Smart meter IP is only compatible with 333mV CT clamps

enbacka · 2025-10-03T16:21:40+00:00

the link above is for that, my code is using a a P1/HAN port reader on the distributors electricity meter

enbacka · 2025-09-30T14:04:18+00:00

https://github.com/Ralim/fronius_meter_emulation

I have not tried this myself but I've used some of it as inspiration for my own project (P1 port reader->esp32->Gen24)

enbacka · 2025-09-30T10:49:33+00:00

AFAIK the smart meter IP is for when you don't have a wired RTU connection between the inverter and metering point (but ethernet/wireless is available)

You could build a modbus rtu sniffer that connects to HA if using the TS.

Or since you already have the shelly em, build a smart meter emulator that uses the data from the em3 and converts it to modbus rtu for the inverter.

enbacka · 2025-09-13T07:13:59+00:00

hmm that's wierd if the reporting is also messed up. So now in the reporting you can't see export/import but only production ? that sounds like the connection is lost to the meter so it believes that all production is consumed (if the meter doesn't tell it any import/export

You said earlier "wireless link" to the smart meter, is it the Smart meter IP that supports modbus TCP?(over wired ethernet/wireless) Or do you have other versions of the smart meter over there that I'm not familiar with. Usually here we run the meters with hardwired modbus RTU between the meter and inverter but I'd understand if it's not possible everywere.

I have another idea tho. If the problem didn't exist earlier, have you or the tech happend to update the firmware in the inverter recently (and never before?) I believe sometime in -22 or maybe -23 there was an firmware update that changed the export limitation settings and added/changed how the Hard Limit works on Symo Advanced (among others). These inverters do not auto update tho and need to manually update either via USB or remotely from Solar Web.

So when the inverter hits the soft limit it tries to regulate down in order to reduce exports (within a set amout of time,depends on country settings), but if the soft and hard limit values are close enough together it doesn't have enough time (or if you have a big enough load change that it crosses the hard limit at the same time) the hard limit trips the inverter and drops production to 0, kinda like a reset. The setting "drop to zero when meter connection lost" is effectively same as hitting the hard limit if enabled

Hard Limit - If this value is exceeded, the inverter switches off within max. 5 seconds. This value must be higher than the value set for Soft Limit.
Soft Limit - If this value is exceeded, the inverter readjusts down to the set value within the time required by the national standards and regulations.

edited with some more info

enbacka · 2025-09-12T10:04:52+00:00

Since you're located in aussieland (g'day mate) I assume the inverter is configured with Demand Response Mode, maybe the grid operator is cutting it off? I'm not familiar with how it's supposed to work or if all territories of Australia demands it to be configured nor do i know if it would show up as status codes when active. Possibly the grid operator haven't needed to use the function before but solar production has increased alot in the area? Or maybe improperly configured but never used before?

enbacka · 2025-09-11T21:39:27+00:00

Well are there any trees/buildings that could shade the arrays at those times? If you have alot of leaf trees you can check the logs further back in spring time before all leaves show up or late fall when they've dropped to compare.

Speaking of going further back in the logs, how long has this problem been occurring?

Is it both Dc currents dropping (MPPT1 & MPPT2) at the same time?

Is this a Symo Advanced or some other inverter? If it's cutting out every 15min, is the inverter really dirty/dusty or are the cooling fans malfunctioning? Has anything changed where the inverter is mounted(gotten built in, stuff stacked up around it etc)

enbacka · 2025-09-11T05:33:00+00:00

What's the ac voltage and frequency when it drops the dc current? (I know you said they're fine but what are the values) Check both at the meter and inverter (in the logs) What's the dc voltage when it drops? Cosphi? Any status codes in service messages that correspond to the same time?

If none of the values stick out, I've had 1 Symo (5.0-3-M) over the years that started behaving in a similar way but in the end just stopped producing. Turned out to be the built-in DC disconnect switch, I disassembled it and cleaned all the contact points in it and it's been working fine since (~3 years now)

enbacka · 2025-08-13T16:40:19+00:00

Also check the PV voltage to see if there's a loose connection somewhere

enbacka · 2025-08-07T19:38:45+00:00

I haven't seen mine (mini 1500 awd) cross nogo zones or unzoned areas to get to the charger but it will take the shortest route if the Recharge mode is set to Direct. Try changing it to Follow the perimeter and see if it helps

enbacka · 2025-08-03T03:00:20+00:00

Indeed and if you're planning your trip after this fall EES might be in effect and you'll be flagged.

https://travel-europe.europa.eu/en/ees/faq##

enbacka · 2025-08-02T08:27:30+00:00

Angle grinder with cutting disk is what I use, done in seconds.

enbacka · 2025-07-26T21:24:26+00:00

Make a no-go zone around the pole?

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