Hi Stephen Thank you ,thanks to your video my Inverter is now working Mine lasted a little over 10 years ,being tight i have used the ordinal Chinese relays ,but have added sockets so next time it will be a quick fix🙂
Hi Stephen, thanks so much for this video. I ordered the parts from Farnell, sockets turned up but they put the relays on back order till February, so I went on to ebay and picked two up from Germany, they took a month to get here, I'll use the Farnell relays for spares. Before I checked your video out I'd spoke to a solar company, they wanted £700 to exchange the inverter, once again thanks.
Yes, the relays are getting more difficult to source. Glad you found some and that the repair worked for you. Great to keep another inverter from the scrap heap.
I got nine years out of my original relays , now replaced using the same relays as Stephen, thanks to this helpful video - I also took Ezra's tip of removing the extra pins in the socket
Servus und vielen Dank für die ausführliche Beschreibung. My Name is John and i'm from Bavaria / Deutschland. Dank Deiner Anleitung habe ich das gleiche Model repariert. Materialkosten waren bei mir ca. 30€. Vielen Dank und mach bitte weiter so. You did a great Job. Thank You very much.
Hi Stephen, totally love the idea of adding the relay bases! Instead of cutting the 2 extra pins, I pulled the base casings apart and just removed the extra pins. Thanks heaps!!
Outstanding Video, easy to follow. Thank you for taking the time to do this. I was trying to find sockets with six pins but then saw your video. I opened the sockets up carefully and removed two pins. Again renewed thanks.
Hi Stephen. I'm from Australia and have the TL1500AS model and noticed the "relay check fail" error yesterday. No idea how long it's been like that either as I never really paid any attention to the inverter since it was installed 7 years ago. Was installing a workbench below the inverter yesterday and only then noticed the error when I got curious about the constant clicking sounds the inverter was making. After doing some research online and thinking I would have to buy a new inverter as my unit is out of warranty, I found this video. I can't thank you enough Stephen. I purchased the mount relay bases(sockets) and the finder relays and had it all up and running again. Took me about two hours all up. Your step by step video made it so easy to follow. Looking at some Aussie forums I found this problem is very common with these eversolar inverters and can't believe they aren't being recalled and replaced with better relays, or at least have the sockets installed free of charge so the relays can be easily changed out. Cheers. Adam
John Spartan That's great. Really glad the video helped you. So unecessary to throw these inverters out when the fix is relatively simple. It would have been so much easier if the manufacturer had fitted the relay sockets in the first place though! Thanks for taking the time to give feedback. Stephen.
Thank god, someone who knows what they're on about! Not enough info out there and trying to get it sorted by a technician is hard enough. I'm giving them one more try then if nothing, I will try this out
Great job and delivered in a nice calm manner, also liked how you added the socket bases for future should it need worked on again!! Just a word of caution guys, those boards house a couple of large capacitors capable of storing around 400v DC and will give a really nasty or even lethal electric shock. Be sure to exercise extreme caution working on these things. If possible, allow to sit powered down for 24 hours to dissipate the stored energy before opening the case. And if you can, discharge the caps with a suitable resistor and prove the terminals are dead with a multimeter on DC volts before handling the PCB.
Thanks Stephen. I got a SMA Sunny Boy SB1700, with the same sort of problem. I will definitely give it a try to repair it base on your video and keep you posted...
FOR THOSE WHO MAY ASK : here is a link to compatible relays fr.aliexpress.com/item/32276641879.html ; a link to compatible supports (2 pins to remove before assembly) fr.aliexpress.com/item/1005002530931323.html Hope it helps. Remember : high voltage = high danger. Process only if you have been trained to soldering / desoldering and if you know exactly how to manage working safely on high voltage devices.
Excellent job. I have the big brothers of this inverter. A 3200tl, a 4000tl and a 4400tl. Unfortunately the 4000tl has some blown 3120 gate drive so will have to replace the mosfet on the underside too. Thanks for the clear disassembly instructions. Nice idea about the replacable relays. I think my one has bigger relays so it would be interesting if i could find the equivalent finder socket and relay for them.
Hi Stephen, Thanks to this excellent video, I was able to repair my Omniksol-2k-TL inverter today. Technically it is very similar to your Eversolar. As capacity is a bit bigger (it heId 849H-2AH2-F-C relays), I chose to install Finder relays 40.62.9.012.4000. Thank you for sharing!
@@bartpieters7683 Hallo Bart (je was de @ vergeten, daarom een laat antwoord). De relais hebben het drie jaar prima gedaan, maar nu is er blijkbaar weer een kapot. Ik ga nieuwe bestellen.
Many thanks Stephen ,my unit having shown 'Relay Check Fail' is now working normally for a cost of about £40 !! Probably the worst problem fixing it was removing one of the DC plugs ,the side clips did not squeeze in enough to release but other than that it all went as per your video.Once again thank you .
That's great John. Thanks for the encouraging feedback. I have just fixed another one myself - it went much faster the second time around! I find the most difficult bit is de-soldering the old relays. But having the sockets in there now means I should never have to do that again!
Hi Stephen,my unit has stopped working again ,showing relay check fail again ! The contacts look clean and operate top 'in' then bottom 'in' but then they both click 'out' .Any ideas?
That's disappointing that it has failed again so quickly John. I'm not too sure of the answer. I believe there is another relay on the circuit board (at the end of the board near the ethernet connection module) so I suppose it could be that one which has failed, but I'm not sure whether that would give the same fault or not.
Hello, very good video, thank you. These days I received an inverter just like the one you disarmed, with the same fault. I unsoldered and changed the relays but when I plug it back in it doesn't do anything, it doesn't turn on the panel or anything. When I desoldered I didn't disconnect the wires. Maybe that caused the error. The other thing is that to test the relays I measured continuity by energizing the coil with a 12 Volt battery without removing the relays. Playing with the battery on the relay coil pins. Attentive to your comments, greetings from Chile.
Hi. It's difficult to diagnose your problem from here, but I suspect that unfortunately you have caused a fault in one or more of the sensitive components by working on it without unplugging, or by testing with a 12V battery.
Hey Stephen! Great video! I do not have an EverSolar unit. I have an SMA unit with similar problem. Your video is the first I found (after a watching many others) that addresses that problem. It seems manufacturers don't want to release any type of technical information about these units at all. You have encouraged me to try to repair my out of warranty unit which otherwise would have to be trashed. Congratulation on a well done video and have a happy new year! Rafael
Hi Stephen. This has been a brilliant video and I have fixed my inverter. I chose not to use the socket as I was told it Derates the relay by 2 A. There is a new finder relay 40.62 available which has a 10A rating but I couldn’t get that easily so went to your choice. EBay is a good place to get them and only £10 each from Little Diode.The comment about the contact spacing is erroneous I believe. The existing relay has a 1.5 mm contact gap which is replicated on the Finder relay. Thanks again
Thanks just repaired mine I have a: (MNIY) Omnikol-1. 5k-TL Looks different on the outside but same display and exact same motherboard. Bought everything from Conrad.com👌🏼
Check at 1 min 20 secs in - you have to squeeze the sides of the connector together to release the plug. You may have to pull fairly hard if they've been in place a long time.
I unfortunately have a different fault. Yesterday 07/10/2020 we had three power cuts in quick succession and I think my TL4000 has been spiked, it's now showing VAC Failure. I powered it off overnight and have measured the AC on the motherboard this morning which is presently 237v That matches the voltage on the display so afaik it's within UK range, what I can't do is check the inverter settings. I bet the configs been screwed and its reverted to a non UK setting or a non UK compatible default :( The manual suggest there is a application called 'Easy Config' that can be used to configure these via the USB port, googling such a common term as 'Easy Config' is a hopeless task though The manufacturer has long since disappeared so it looks like I will be buying a replacement Inverter now. I wonder if there is a way via the screen to check if it set to UK G83 or whatever its called?
Hi all mother in law said meter reading is the same for a few week now...no power from unit..had a look (I’m electrician) relay failure...model using 2500tl will be having a go at replacing both once I know ratings of relays....thanks for this video....could save a £1000
This is the worst time of year for having zero output. All this lovely sunshine and no FIT :(. Go for it, should be straightforward for an electrician :)
Stephen Brown ..tapped on the two relays and worked a few days...got board out and on bench ...got relays on order...the two came out have seen better days....warning to others capacitors holding charge....discharge but shorting out..then proceed to carry out repairs.
Hi Stephen Really helpful video. Unfortunately after installation the relay fault still showed. On checking it appears my circuit board has a connection fails. Does anyone know how to get a replacement board?
@@sab478 yea absolutely mate. I am an auto electrician, and deal with burnt out relays all the time. I can't believe that companies would charge a customer for a whole new invertor for a part that probably cost 15 cent to manufacture
HI Stephen, Have you had any dealings with the relay check fail fault on Trannergy inverters?. I've had one replaced by the company under warranty, however the latest one is surprise surprise out of warranty. I have stripped it down and its slightly different inside. I think I have identified the two suspect relays,(Song Chuan SCL-1-H-DPNO-1 12Vdc) however they are quite a bit bigger in size to the ones in your video. The contacts look rather worn out and burnt. Gonna change them anyway to see if they are the cause of the fault. Have you stripped one of these types down before? Regards John
No, sorry John, not worked on Trannergy inverters. Sounds like it's a similar problem though so replacing the inverters seems a good place to start. Good luck!
hi Stephen, I got relay failed problem for my TL1500, my is already a replacement one by Eversolar, they said they changed to a better relay. They uses the same brand but bigger 16A 210H-2AH-F-C, but did lasted long at all. I got a question about the types of relay you picked. how did know the 2 Finder relays you got, which one is better? Both is only 8A, could it be bigger as the original one is 12A? Also some metioned we should try to match the resistance to be same as the original, is it matters? I was very hard to remove the motherboard, it still stuck, any suggestions? Thanks
Hi Richard, it is difficult to find relays with the correct form factor (size and number / spacing of pins) so there is not a lot of choice. I went for the Finder 50.12.9.012.5000 (RS Stock No. 733-5104) which is 15A with force guided gold and silver alloy contacts. I think the good quality contacts are worth the extra money. So far I've converted two TL2000 inverters with these and both working fine. Not sure about the resistance, but these seem to work well for me. It can be very difficult to get the motherboard out. Make sure you have removed all of the screws (some are well hidden!) and then keep working around the edges with your fingers slightly flexing the board. It is the heat sinks that stick, which are all in one corner of the board as I'm sure you realise. So concentrate in this area. You will find it suddenly lifts and once one or two sinks have lifted the rest come easily. Use thin gloves or a rag or you will cut your fingers on the edge of the motherboard as you flex it. It's quite a robust board but try not to crack it! Good luck!
fantastic video! i am considering getting one of these but thought i would check its common faults first. if all it is, is the relays i am laughing! i am not sure with the KMH brand capacitors however. i have plenty spare if they ever start to bulge. i am interested to know what kind of PVs you have.. whats the specs of your panels? i have 6x 263watt 36v panels. all were scrapped at the scrap yard i work at due to fire damage. some are scorched and some got hot enough to actually bend the aluminium frame slightly but i did a quick dead short of each panel and everyone produced about 9 amps @ 36v in full sunshine. i will be doing a nice video log on the build i do too :D
Sounds like you got a bargain finding usable panels at a dump! I look forward to seeing your video - let me know on here when you've posted it. I have 8 x Sharp NU250J5 panels linked to each inverter. Not sure of the exact spec but think they are 250W 36V.
Hi Stephen, great video. I applied this fix to a unit here recently as the manufacturer is not responding to warranty requests here in New Zealand. Worked for a few days but then brought up the same fault message. On inspection contacts are welded closed on one of the new relays, though there are no visible signs of overheating. Wondering how long the fix worked for you? It could well be another fault causing my issue, perhaps some suppression components somewhere no longer doing what they should be.
...have read more comments here now, I'll do a bit more research on different relays, but I appreciate already it's not going to be easy finding anything better in the same footprint
@@brentbrown4067 Sorry to hear it hasn't worked for you. I fixed two units as per the video and both have been successful. I've not had to change the relays again (yet!). But then we may get less sunshine than you and so the units are more 'oversized' than yours!
@@sab478 Got it sorted now, thanks. I have reason to believe the mains supply had tripped, due to an unrelated earth-leakage fault, which just happened to occur around mid-day in full summer sun. The inverter would have been running near maximum power output when it was suddenly required to disconnect ~ putting maximum stress on the relay contacts as they began to open, and as a result one set of relay contacts were found to be stuck in the closed position. On removing the relays I managed to free the stuck contacts fairly easily by applying 12VDC to the coil... so they must have been only "very lightly spot-welded", but still decided to replace both relays. The original relays were Song Chuan 894H-2AH1-F-C 12VDC, the first replacements I put in were Finder 50.12.9.012.5000 which failed, and I have now fitted the "upgraded" Song Chuan 210H-2AH1-F-C 12VDC relays (mentioned in other comments here) which I found in stock at Mouser.com.
I have a sharp inverter manual that states the opposite and a reply from SMA. Stating the opposite .some American u tubers stating the opposite. Connecting high d/c first to inverter does not seam correct.to me . Thanks mike
Yes, has separate generation meter. It will depend where you are in the world what the local requirements are for metering I guess. This one was also installed when the UK paid a 'feed in tariff', which I don't think exists any more.
The relays that you used are the wrong type , They need a large gap type , the solar inverter is now not compliant You need to use large gap type relays with a gap of over 4mm You are supplying bad advice and non compliance
Hi Chris. I took this advice from other forums and they've been working fine. However, I'm always open to correction, so are you able to give the details of the correct replacement relays which will fit these units please?
Hi Stephen
Thank you ,thanks to your video my Inverter is now working
Mine lasted a little over 10 years ,being tight i have used the ordinal Chinese relays ,but have added sockets so next time it will be a quick fix🙂
Hi Stephen, thanks so much for this video. I ordered the parts from Farnell, sockets turned up but they put the relays on back order till February, so I went on to ebay and picked two up from Germany, they took a month to get here, I'll use the Farnell relays for spares. Before I checked your video out I'd spoke to a solar company, they wanted £700 to exchange the inverter, once again thanks.
Yes, the relays are getting more difficult to source. Glad you found some and that the repair worked for you. Great to keep another inverter from the scrap heap.
I got nine years out of my original relays , now replaced using the same relays as Stephen, thanks to this helpful video - I also took Ezra's tip of removing the extra pins in the socket
Servus und vielen Dank für die ausführliche Beschreibung. My Name is John and i'm from Bavaria / Deutschland. Dank Deiner Anleitung habe ich das gleiche Model repariert. Materialkosten waren bei mir ca. 30€.
Vielen Dank und mach bitte weiter so.
You did a great Job. Thank You very much.
Hi Stephen, totally love the idea of adding the relay bases! Instead of cutting the 2 extra pins, I pulled the base casings apart and just removed the extra pins. Thanks heaps!!
Outstanding Video, easy to follow. Thank you for taking the time to do this. I was trying to find sockets with six pins but then saw your video. I opened the sockets up carefully and removed two pins. Again renewed thanks.
Hi Stephen. I'm from Australia and have the TL1500AS model and noticed the "relay check fail" error yesterday. No idea how long it's been like that either as I never really paid any attention to the inverter since it was installed 7 years ago. Was installing a workbench below the inverter yesterday and only then noticed the error when I got curious about the constant clicking sounds the inverter was making.
After doing some research online and thinking I would have to buy a new inverter as my unit is out of warranty, I found this video. I can't thank you enough Stephen.
I purchased the mount relay bases(sockets) and the finder relays and had it all up and running again. Took me about two hours all up. Your step by step video made it so easy to follow. Looking at some Aussie forums I found this problem is very common with these eversolar inverters and can't believe they aren't being recalled and replaced with better relays, or at least have the sockets installed free of charge so the relays can be easily changed out. Cheers. Adam
John Spartan That's great. Really glad the video helped you. So unecessary to throw these inverters out when the fix is relatively simple. It would have been so much easier if the manufacturer had fitted the relay sockets in the first place though! Thanks for taking the time to give feedback. Stephen.
Hi John, where in Australia did you get the spares as I need to do this fix. Thanks.
Thank god, someone who knows what they're on about! Not enough info out there and trying to get it sorted by a technician is hard enough. I'm giving them one more try then if nothing, I will try this out
Great job and delivered in a nice calm manner, also liked how you added the socket bases for future should it need worked on again!!
Just a word of caution guys, those boards house a couple of large capacitors capable of storing around 400v DC and will give a really nasty or even lethal electric shock. Be sure to exercise extreme caution working on these things.
If possible, allow to sit powered down for 24 hours to dissipate the stored energy before opening the case. And if you can, discharge the caps with a suitable resistor and prove the terminals are dead with a multimeter on DC volts before handling the PCB.
Thanks Stephen. I got a SMA Sunny Boy SB1700, with the same sort of problem. I will definitely give it a try to repair it base on your video and keep you posted...
SMA offered me a refurbished model for 400 euro and one year warranty. Lets see how repair is going to help...
Thanks for the video! I changed the relays and found supports for next change
FOR THOSE WHO MAY ASK : here is a link to compatible relays fr.aliexpress.com/item/32276641879.html ; a link to compatible supports (2 pins to remove before assembly) fr.aliexpress.com/item/1005002530931323.html Hope it helps. Remember : high voltage = high danger. Process only if you have been trained to soldering / desoldering and if you know exactly how to manage working safely on high voltage devices.
Excellent job. I have the big brothers of this inverter. A 3200tl, a 4000tl and a 4400tl. Unfortunately the 4000tl has some blown 3120 gate drive so will have to replace the mosfet on the underside too. Thanks for the clear disassembly instructions. Nice idea about the replacable relays. I think my one has bigger relays so it would be interesting if i could find the equivalent finder socket and relay for them.
Hi Stephen,
Thanks to this excellent video, I was able to repair my Omniksol-2k-TL inverter today. Technically it is very similar to your Eversolar. As capacity is a bit bigger (it heId 849H-2AH2-F-C relays), I chose to install Finder relays 40.62.9.012.4000. Thank you for sharing!
Hallo Ron, werkt dit nog steeds naar behoren? Ik heb dezelfde omvormer en ben aan 't kijken voor geschikte relais
@@bartpieters7683 Hallo Bart (je was de @ vergeten, daarom een laat antwoord). De relais hebben het drie jaar prima gedaan, maar nu is er blijkbaar weer een kapot. Ik ga nieuwe bestellen.
Thanks a lot. I bought the parts for £15 from Farnells. Your tip has saved me a packet
Hi Stephen, Thanks for your video. Just changed the relays in my inverter and it worked. Great, thanks a lot.
Great. Keeps another inverter out of landfill ! Glad this video is still proving useful.
Spot on. Just repaired mine. Thank you for the detailed video.
Thanks for the vid it helped me fix mine.
Many thanks Stephen ,my unit having shown 'Relay Check Fail' is now working normally for a cost of about £40 !!
Probably the worst problem fixing it was removing one of the DC plugs ,the side clips did not squeeze in enough to release but other than that it all went as per your video.Once again thank you .
That's great John. Thanks for the encouraging feedback. I have just fixed another one myself - it went much faster the second time around! I find the most difficult bit is de-soldering the old relays. But having the sockets in there now means I should never have to do that again!
Hi Stephen,my unit has stopped working again ,showing relay check fail again ! The contacts look clean and operate top 'in' then bottom 'in' but then they both click 'out' .Any ideas?
That's disappointing that it has failed again so quickly John. I'm not too sure of the answer. I believe there is another relay on the circuit board (at the end of the board near the ethernet connection module) so I suppose it could be that one which has failed, but I'm not sure whether that would give the same fault or not.
Amazing video, thank you
Hello, very good video, thank you. These days I received an inverter just like the one you disarmed, with the same fault. I unsoldered and changed the relays but when I plug it back in it doesn't do anything, it doesn't turn on the panel or anything. When I desoldered I didn't disconnect the wires. Maybe that caused the error. The other thing is that to test the relays I measured continuity by energizing the coil with a 12 Volt battery without removing the relays. Playing with the battery on the relay coil pins. Attentive to your comments, greetings from Chile.
Hi. It's difficult to diagnose your problem from here, but I suspect that unfortunately you have caused a fault in one or more of the sensitive components by working on it without unplugging, or by testing with a 12V battery.
Hey Stephen! Great video! I do not have an EverSolar unit. I have an SMA unit with similar problem.
Your video is the first I found (after a watching many others) that addresses that problem. It seems manufacturers don't want to release any type of technical information about these units at all. You have encouraged me to try to repair my out of warranty unit which otherwise would have to be trashed.
Congratulation on a well done video and have a happy new year!
Rafael
I hope you manage to repair it OK. Anything that keeps more stuff out of landfill and saves you money has to be worth a try! Thanks for your feedback.
Hi Stephen. This has been a brilliant video and I have fixed my inverter. I chose not to use the socket as I was told it Derates the relay by 2 A. There is a new finder relay 40.62 available which has a 10A rating but I couldn’t get that easily so went to your choice. EBay is a good place to get them and only £10 each from Little Diode.The comment about the contact spacing is erroneous I believe. The existing relay has a 1.5 mm contact gap which is replicated on the Finder relay. Thanks again
Glad we've kept another inverter out of landfill ! Good extra info too. Thanks.
Good jobs 👍I'm have 2000w and the no't work no more power thanks you
Thanks just repaired mine
I have a: (MNIY) Omnikol-1. 5k-TL
Looks different on the outside but same display and exact same motherboard. Bought everything from Conrad.com👌🏼
Thanks well produced video.. am having problems unpluging the DC connectors , is there a trick to how to release them on unplug them off the panel?
Check at 1 min 20 secs in - you have to squeeze the sides of the connector together to release the plug. You may have to pull fairly hard if they've been in place a long time.
Hi Stephen,
Have you had a isolator fault on the unit after fixing the relays? Any idea what to check if you get a isolator fault
Great idea for the sockets, the relays used in this are 8 amp but the relays on the inverter are 10-12 amps....
I unfortunately have a different fault.
Yesterday 07/10/2020 we had three power cuts in quick succession and I think my TL4000 has been spiked, it's now showing VAC Failure.
I powered it off overnight and have measured the AC on the motherboard this morning which is presently 237v
That matches the voltage on the display so afaik it's within UK range, what I can't do is check the inverter settings.
I bet the configs been screwed and its reverted to a non UK setting or a non UK compatible default :(
The manual suggest there is a application called 'Easy Config' that can be used to configure these via the USB port, googling such a common term as 'Easy Config' is a hopeless task though
The manufacturer has long since disappeared so it looks like I will be buying a replacement Inverter now.
I wonder if there is a way via the screen to check if it set to UK G83 or whatever its called?
Hi all mother in law said meter reading is the same for a few week now...no power from unit..had a look (I’m electrician) relay failure...model using 2500tl will be having a go at replacing both once I know ratings of relays....thanks for this video....could save a £1000
This is the worst time of year for having zero output. All this lovely sunshine and no FIT :(. Go for it, should be straightforward for an electrician :)
Stephen Brown ..tapped on the two relays and worked a few days...got board out and on bench ...got relays on order...the two came out have seen better days....warning to others capacitors holding charge....discharge but shorting out..then proceed to carry out repairs.
Update....repaired and working again....£11.00 for 2 relays and 1/2 hour labour.
Hi Stephen
Really helpful video. Unfortunately after installation the relay fault still showed. On checking it appears my circuit board has a connection fails. Does anyone know how to get a replacement board?
I have a goodwe invertor with the same fault, any experience with repairing a goodwe?
I haven't I'm afraid, but suspect the basic principles are similar. Worth giving it a go, and if successful, post a video for others!
@@sab478 yea absolutely mate. I am an auto electrician, and deal with burnt out relays all the time. I can't believe that companies would charge a customer for a whole new invertor for a part that probably cost 15 cent to manufacture
HI Stephen,
Have you had any dealings with the relay check fail fault on Trannergy inverters?. I've had one replaced by the company under warranty, however the latest one is surprise surprise out of warranty. I have stripped it down and its slightly different inside. I think I have identified the two suspect relays,(Song Chuan SCL-1-H-DPNO-1 12Vdc) however they are quite a bit bigger in size to the ones in your video. The contacts look rather worn out and burnt. Gonna change them anyway to see if they are the cause of the fault. Have you stripped one of these types down before?
Regards John
No, sorry John, not worked on Trannergy inverters. Sounds like it's a similar problem though so replacing the inverters seems a good place to start. Good luck!
hi, great work there. do you have an idea how to fix the DC Inj High fault?
Sorry, I'm not sure about that one.
Thanx!!! i fixt my inverter
hi Stephen, I got relay failed problem for my TL1500, my is already a replacement one by Eversolar, they said they changed to a better relay. They uses the same brand but bigger 16A 210H-2AH-F-C, but did lasted long at all.
I got a question about the types of relay you picked. how did know the 2 Finder relays you got, which one is better? Both is only 8A, could it be bigger as the original one is 12A?
Also some metioned we should try to match the resistance to be same as the original, is it matters?
I was very hard to remove the motherboard, it still stuck, any suggestions?
Thanks
Hi Richard, it is difficult to find relays with the correct form factor (size and number / spacing of pins) so there is not a lot of choice. I went for the Finder 50.12.9.012.5000 (RS Stock No. 733-5104) which is 15A with force guided gold and silver alloy contacts. I think the good quality contacts are worth the extra money. So far I've converted two TL2000 inverters with these and both working fine. Not sure about the resistance, but these seem to work well for me.
It can be very difficult to get the motherboard out. Make sure you have removed all of the screws (some are well hidden!) and then keep working around the edges with your fingers slightly flexing the board. It is the heat sinks that stick, which are all in one corner of the board as I'm sure you realise. So concentrate in this area. You will find it suddenly lifts and once one or two sinks have lifted the rest come easily. Use thin gloves or a rag or you will cut your fingers on the edge of the motherboard as you flex it. It's quite a robust board but try not to crack it!
Good luck!
fantastic video! i am considering getting one of these but thought i would check its common faults first. if all it is, is the relays i am laughing! i am not sure with the KMH brand capacitors however. i have plenty spare if they ever start to bulge.
i am interested to know what kind of PVs you have.. whats the specs of your panels?
i have 6x 263watt 36v panels. all were scrapped at the scrap yard i work at due to fire damage. some are scorched and some got hot enough to actually bend the aluminium frame slightly but i did a quick dead short of each panel and everyone produced about 9 amps @ 36v in full sunshine. i will be doing a nice video log on the build i do too :D
Sounds like you got a bargain finding usable panels at a dump! I look forward to seeing your video - let me know on here when you've posted it. I have 8 x Sharp NU250J5 panels linked to each inverter. Not sure of the exact spec but think they are 250W 36V.
Hi Stephen, great video. I applied this fix to a unit here recently as the manufacturer is not responding to warranty requests here in New Zealand. Worked for a few days but then brought up the same fault message. On inspection contacts are welded closed on one of the new relays, though there are no visible signs of overheating. Wondering how long the fix worked for you? It could well be another fault causing my issue, perhaps some suppression components somewhere no longer doing what they should be.
...have read more comments here now, I'll do a bit more research on different relays, but I appreciate already it's not going to be easy finding anything better in the same footprint
@@brentbrown4067 Sorry to hear it hasn't worked for you. I fixed two units as per the video and both have been successful. I've not had to change the relays again (yet!). But then we may get less sunshine than you and so the units are more 'oversized' than yours!
@@sab478 Got it sorted now, thanks. I have reason to believe the mains supply had tripped, due to an unrelated earth-leakage fault, which just happened to occur around mid-day in full summer sun. The inverter would have been running near maximum power output when it was suddenly required to disconnect ~ putting maximum stress on the relay contacts as they began to open, and as a result one set of relay contacts were found to be stuck in the closed position. On removing the relays I managed to free the stuck contacts fairly easily by applying 12VDC to the coil... so they must have been only "very lightly spot-welded", but still decided to replace both relays. The original relays were Song Chuan 894H-2AH1-F-C 12VDC, the first replacements I put in were Finder 50.12.9.012.5000 which failed, and I have now fitted the "upgraded" Song Chuan 210H-2AH1-F-C 12VDC relays (mentioned in other comments here) which I found in stock at Mouser.com.
I reckon the wrong shut down and start up sequence is burning out relay. But I don’t now the answer mike as to correct sequence?
When turning off it's AC off first, then DC. Turning on, switch on DC first, then AC.
I have a sharp inverter manual that states the opposite and a reply from SMA. Stating the opposite .some American u tubers stating the opposite. Connecting high d/c first to inverter does not seam correct.to me . Thanks mike
@@margarethobbs2471 I'm going on the instructions given by the installer. Perhaps the answer is to always restart at night?!
Hi Stephen is this grid tie inverter .plz reply
Hi Muhammad, yes it is. It feeds any excess power produced by the panels into the grid.
@@sab478is this use without bidirectional meter in our home
Yes, has separate generation meter. It will depend where you are in the world what the local requirements are for metering I guess. This one was also installed when the UK paid a 'feed in tariff', which I don't think exists any more.
A/c first D/C. Second mike
Hi y have a sunnyboy 1700 and y have a error k1 open
The relays that you used are the wrong type , They need a large gap type , the solar inverter is now not compliant
You need to use large gap type relays with a gap of over 4mm
You are supplying bad advice and non compliance
Hi Chris. I took this advice from other forums and they've been working fine. However, I'm always open to correction, so are you able to give the details of the correct replacement relays which will fit these units please?
Hello Chris,
Can you advise what sort of relay is required for these converters? Where can you get these relays?