Post by Admin on Oct 27, 2018 0:07:13 GMT
Jun 10, 2016 18:23:03 GMT Guest said:
I left the diodes on my 100W plastic panel out in the rain. I'm assuming that's bad.
What are the specs so I can replace them?
Dear Customer,
If the Diode was left out in the rain and it is best to replace it. Depending on the intensity and lenght of the downpour it could have retained some water. The Diode model is 10ASQ050. Do not hesitate to contact us for any additional help.
Jun 11, 2016 13:01:47 GMT @wmac62 said:
There easy to test with a multi-meter, I had the same issue with the two diodes in the panel box on a 100 watt panel. They both tested bad as a result of a reverse polarity issue mistake on my part. I ordered new ones from ebay and waiting for their arrival. I removed both diodes, checked the panel and voltage out put was good. Are your diodes still in the panel connected? I posted an earlier question needing a picture or a wiring diagram of the diodes with no response from anyone?
Jun 16, 2016 14:56:34 GMT Guest said:
Okay, before I replace the diodes, if the panel has a voltage of 17-18 volts across the leads, it's still good and the diodes are okay, right?
Jun 17, 2016 1:47:52 GMT Guest said:
Apparently, the Vmp voltage on the panel spec sheet should be roughly the same as the PV voltage on the controller. Well, if my Vmp spec is 17.7, and my PV voltage is 11.90, then I have a dead controller?
Jun 17, 2016 18:23:50 GMT @wmac62 said:
I would again say yes, the diodes are fine if you are getting the nominal output voltage from the panel. If you are outputting say 18.6 volts from the panel and only getting 11.9 out of the controller I would assume the controller is set up not to create an over voltage for the load terminals or battery connection terminals but 11.9 vdc seems too low to provide any type of charge to the battery. Are you measuring out put voltage on the load terminals? Maybe a question for a renogy subject matter expert?
Jun 20, 2016 13:32:37 GMT Guest said:
VP, voltage on the controller where the panel is connected, is 11.90, but is supposed to be within 10% of VMP, the panel's rating, which is 17.7. I got this from the renogy youtube video.
Thanks for your help!
Jul 20, 2016 20:16:58 GMT Guest said:
Okay, turns out that, although I get a nominal 17-18 open circuit volts from the panel, the panel is broken, and I would assume it's the diodes that are the problem, because my battery and charge controller are both new.