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Old 11-05-2016, 04:34 AM   #41
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Controller is too hot on the data sheet I looked at max temp for full load is 40

Panel output is not an issue. Its not how it works
Data sheet:-
to +60C (full rated output up to 40C)
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Old 11-05-2016, 06:42 AM   #42
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stone beach:


That 40 deg C spec for full rated output is ambient temperature, not the controller case temperature. But you may have a point. Even though Hickers reports 30 deg C ambient, that may be too hot for full output so the unit cycles.


How about directing a fan on the controller and see if that stops the cycling?


David
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Old 11-05-2016, 11:30 AM   #43
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Quote:
Originally Posted by djmarchand View Post
stone beach:

How about directing a fan on the controller and see if that stops the cycling?


David

Great idea, and very easy test to try.
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Old 11-05-2016, 03:42 PM   #44
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In addition to the fan can you prop open a door or locker? If the cavity the controller is in is too small or to tightly closed then the outdoor ambient may be fine but the cavity ambient may not by the heat the controller generates. Even with a fan it may need to have that heat forcibly exited, not just circulated.
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Old 11-07-2016, 09:32 AM   #45
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Been searching for panel info. covering your panels.
For what may be a similar sunpower panel voc is 68.2 ?? Which is way more than your controller can support with 2 panels in series so maybe I am looking at the wrong data....or maybe you have unmatched system components??

Presume your 2 panels are connected in series?

There is usually a big label on the back of the panel with tech data. If you post a photo of that you might get better comment !!

Also, I dont understand how your vsr's are wired....What are these doing when trip cycling is occurring?

If they are as you describe and if sensing house bank then I cant imagine how the controller (or the vsr's) can deal with that situation???
Finally, you didnt answer my set up or battery voltage question ??
Cant help much with only part info.
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Old 11-09-2016, 06:52 PM   #46
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Hi everyone, problem solved, nothing to do with the controller, the installer fitted an auto reset breaker in the wires to the house battery from the controller, this was overheating, tripping and then resetting in anything much over 35 amps although it was rated to 50 amps. Taking it out of the system saw the cycling problem disappear and the controller happily deliver 50 amps per hour and the house bank showing steadily increasing voltages over the day. The electrician is sending me a larger capacity breaker.
Thank you all for your contributions, this problem was very frustrating and I'm glad that in the end the fix was/will be easy.

Now on to sorting the low voltage at the fridge.

Boats, don't we love them!
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Old 11-09-2016, 06:57 PM   #47
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Nice work to get it sorted, and thanks for telling us about it.
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Old 11-09-2016, 07:15 PM   #48
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Hickers,great you solved the problem.
What was the intended function for the breaker? I have an inline fuse fitted close to the battery in my much lower output array, pretty sure I saw it on a schematic published online, as a safety thing.
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Old 11-09-2016, 07:18 PM   #49
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Jim said It's there to protect the circuit in case there is a short in the charging cables, it was fitted into the red wire just prior to the battery terminal.
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