This is a document about ProStar troubleshooting guide. It introduces troubleshooting methods for ProStar overcharge, ProStar does not charge battery, LVD does not work, battery type selection does not work, controller goes into LVD when battery voltage is much greater than 11.6V, meter does not work, controller does not start.
This document serves as a troubleshooting guide for the Morningstar ProStar charge controller, published by Morningstar Corporation in April 2000. It assumes basic circuit knowledge and safety precautions when working with live circuits in solar energy systems. The guide outlines necessary equipment, including multimeters, adjustable power supplies, and specific tools for soldering and component replacement.
Required equipment includes a multimeter, an adjustable power supply capable of supplying 2A at 15V, a small lead acid battery (7aHr), a load of approximately 2A, screwdrivers, a soldering iron, wire cutters, and needle nose pliers.
If the voltage at TP10 is greater than 10V when the battery voltage is measured at the PV input terminals, the input MOSFETs are damaged and need to be replaced.
If the meter shows garbage or erratic readings, the meter driver chip is bad and requires the meter to be replaced with a working meter board.