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Post by Curt05 on Aug 25, 2017 17:05:28 GMT -8
I have a 200 watt setup with Commander 20a mppt and MT -5 Tracer charging 12V AGM battery. Recently the PV indicator on the commander has been off during daylight hours. I've checked all fuses and connections and everything seems to be fine. On the MT5 unit the display shows the panels are still putting out a charge of ~4.2V, but they would normally put out around ~16.4V during daylight hours. Has anyone else had this issue? Could this be a bad panel?
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Post by Curt05 on Aug 25, 2017 19:27:54 GMT -8
Never mind my dudes. Was a blown MC4 inline fuse from the panels. Any suggestions on why a fuse would blow directly from panels?
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Post by rabird on Aug 26, 2017 4:50:08 GMT -8
not sure of a need for a fuse between panel and controller with 2 panels.
With an open circuit how do ya get 4v?
paralleled, 200 watts would be 10A or so, series would be 5A.
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Post by tattoo on Aug 26, 2017 4:54:35 GMT -8
Never mind my dudes. Was a blown MC4 inline fuse from the panels. Any suggestions on why a fuse would blow directly from panels? What size is the fuse?  |
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Post by Curt05 on Aug 26, 2017 7:15:48 GMT -8
Fuse was a 10a. Failed after about 5 months of use
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Post by tattoo on Aug 26, 2017 7:59:51 GMT -8
Fuse was a 10a. Failed after about 5 months of use There is your problem..... Why would you put a 10a fuse on a 20a system in the first place??? |
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