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oli-shelley avatar image
oli-shelley asked

Easysolar 48v / 5000/ 70 Charge problems

I have a 3 year old Easysolar 48v 5000/ 70a system with 3 Pylontech US2000C batteries and a backup generator as a full off grid system.


i have a fault where the batteries would get stuck charging at 88% and then clear after a few hours and charge fully, this problem has now got worse and they get stuck in the 60s and and around 73%, if they clear that they get stuck a 88%and will not pass this level


i know there is more solar available as when i put load on the system the pv charger increases dramatically .


the system also shows a constant charging of 439w regardless and this does not change.

i have added 2 photos one with load and no load to show the differences.

299608036-1107590036509923-1484783672846663858-n.png 300503850-466401565349752-8300643876800106288-n.png


i would be very greatful for and help or ideas

fault
300503850-466401565349752-8300643876800106288-n.png (114.9 KiB)
299608036-1107590036509923-1484783672846663858-n.png (115.3 KiB)
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6 Answers
Alexandra avatar image
Alexandra answered ·

@oli-shelley

What us the CCL and DCL shown on the GX and VRM. If they are controlling the system, then that is the place to start looking.

What is their SOH shown as?

Is the pylontec the battery monitor for the system.on the GX? That will be the one reporting to the VRM

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oli-shelley avatar image
oli-shelley answered ·

@Alexandra

Thanks very much for your reply.


I have had a look on the system.

DCL 75AMPS

CCL 75AMPS

CVL 53.2V


SOH 96%


I am pretty sure that the pylon tech is the battery monitor but I couldn’t see where that would be on the gx

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Alexandra avatar image Alexandra ♦ commented ·
@oli-shelley

Battery monitor can be found under settings - system setup

How else is the system programmed?

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oli-shelley avatar image oli-shelley Alexandra ♦ commented ·
Yes it says pylontech on can bus.


Until now the system has been monitered by the installer so I am just getting up to speed with how it all operates.


What do you mean by how else is the system programmed?

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Alexandra avatar image
Alexandra answered ·

@oli-shelley

The mppts under external control is correct. It means they are being controlled by the Pylontec.

Absorption should be set ro 52V, Float 51v on both the mppts amd the inverter.

DVCC on the gx must be on SVS is odd and STS off. Sometimes you have to limit the charge current to 52.4v especially when the batteries have not been kept 100% charged for a while to help with balancing.

It may be worth updating all the components of your system and resetting up. What firmware are you running?

Vrm can tell you all in one place under devices.

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oli-shelley avatar image
oli-shelley answered ·

@Alexandra .

Apologies I have been away for a while.

I have made sure everything is running the most up-to-date firmware. I think I may have found something. After updating. The generator wouldn't change properly so I downloaded the setting to v configure. The charge limit for AC input was at 50a which I changed to 15 which resolved that I looked on all the settings on an old file I had downloaded at there are some major differences. The old settings are on the right in the images before I had any problems. I haven't changed anything so I don't know how the changes have occurred. Can I put all these back to the old settings?


img-20220910-205642-775.jpg


img-20220910-205642-775.jpg (3.2 MiB)
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oli-shelley avatar image oli-shelley commented ·

Image 2

img-20220910-205707-203.jpg

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oli-shelley avatar image oli-shelley commented ·

Absorbsion is set at 8hours? and charge current limited to 52a? Also battery is set at storage mode not lithium


img-20220910-205724-594.jpg

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oli-shelley avatar image oli-shelley commented ·

Image 4img-20220910-205740-296.jpg

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kevgermany avatar image
kevgermany answered ·

Part of the software/firmware update on the easy solar is to restore old settings. Yes, do it manually.

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Alexandra avatar image
Alexandra answered ·

@oli-shelley

@kevgermany is correct.

The settings are reset when a firmware update is made, it is mentioned in the manual. You have to reprogram.

Here are the pylontech victron recommend setup instructions.


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