Cheap China Solar Controller Failure
For a couple days been noticing higher than the 14.6 voltage,.....going to 15, and even 15.5,....I knew something was not right. The next day it was showing 16, then quickly went to 17+.......I quickl...
Forum Discussion
smkettner wrote:
Backup PWM is easy at $8 a pop. What about all the other stuff that goes down with 17+ volts.
RJ is lucky it happened while on watch.
Couldn't the buck converter fail in an MPPT controller and then it would pass through 30+ volts? Most controllers have all sorts of "protection" shut-offs.
My old ASC controller fried while I was doing some rewiring (I am a spaz) The trouble shooting using the manual showed that the blocking diode (for night time) was still working ok, but
- the loss of controlling at the high set-point so the battery voltage went higher (16-20v) was due to an "open FET"
-if the voltage remained low (2-5v) that would have been a "shorted FET"
