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Outback fm80 not charging occasionally

PostPosted: Fri Feb 01, 2019 8:53 pm
by angusjones8
I’ve got a fm80 charger controller charging 16x Winston 200ah cells.
It has been running amazingly for almost 2 years with only needing the generator twice.
I got home from work today and the battery was on 50%!
The CC showed CHARGED where is normally says bulk or float and 0amps going to the battery.
It was overcast and about 6:30 pm but I selected restart on the CC and it went into BULK charge and was putting out 10a.
I believe it did this once before in 2 years.
Does anyone know why it would not recharge the battery once it is drained to say 98%?
Thanks

Re: Outback fm80 not charging occasionally

PostPosted: Wed Feb 06, 2019 6:39 pm
by davidg
Have you checked the Outback site for a firmware update? There might be one.......

Re: Outback fm80 not charging occasionally

PostPosted: Wed Feb 06, 2019 7:31 pm
by angusjones8
Too easy I’ll look into that.

Re: Outback fm80 not charging occasionally

PostPosted: Thu Feb 07, 2019 1:30 pm
by australsolarier
i don't know about fm80, but i have midnite classics, that sometimes play up. can you factory reset them?

Re: Outback fm80 not charging occasionally

PostPosted: Thu Feb 07, 2019 5:25 pm
by Gordon-Loomberah
Run through the menu and set it to restart every 90 mins, I think it is restart mode2, without checking the user manual. That way if it does go into weird mode and stop charging, it should re-start in less than 90 mins.

Re: Outback fm80 not charging occasionally

PostPosted: Thu Feb 07, 2019 7:45 pm
by angusjones8
Gordon-Loomberah wrote:Run through the menu and set it to restart every 90 mins, I think it is restart mode2, without checking the user manual. That way if it does go into weird mode and stop charging, it should re-start in less than 90 mins.


Perfect,
The 2 times I’ve caught it doing something stupid I have manually restarted it and it has come good.
Thanks very much for that.

Re: Outback fm80 not charging occasionally

PostPosted: Mon Feb 11, 2019 10:30 am
by SandyP
angusjones8 wrote:...
It has been running amazingly for almost 2 years with only needing the generator twice.
.../...
Does anyone know why it would not recharge the battery once it is drained to say 98%?
Thanks


Maybe also check the internal wire (battery / array) connections on the FM80 to ensure they are still done up tight?

Re: Outback fm80 not charging occasionally

PostPosted: Mon Feb 11, 2019 8:35 pm
by angusjones8
SandyP wrote:
angusjones8 wrote:...
It has been running amazingly for almost 2 years with only needing the generator twice.
.../...
Does anyone know why it would not recharge the battery once it is drained to say 98%?
Thanks


Maybe also check the internal wire (battery / array) connections on the FM80 to ensure they are still done up tight?


Not a bad idea.
I ran a thermal imaging camera over the whole thing a few weeks back and I did find a loose connection in my combiner box for one of my strings of panels. (5 were about 60* and 1 was 85*!)
Everything else seemed not too bad.