Welcome to our troubleshooting guide for Solar Charge Controllers. We have provided universal steps for our customers to use and avoid contacting a technician unnecessarily. These steps will help determine if the controller or system configuration is causing any issues.
To begin, you will need a multimeter, the Charge Controller manual, and the Solar Panel spec sheet. First, ensure that all connections on the controller are tight and secure. Connect the controller to the battery bank and then to the solar array, tightening the controller terminal screws firmly for safe and secure connections. Check the controller's display or LED indicator behaviours against those listed in the manual to identify issues with incorrect behaviour or fault indicators.
If there are no fault indicators, we can move on to basic troubleshooting tests. Start by testing for DC voltage above 20V to confirm the battery connection at the Battery Bank and Charge Controller's Battery terminals. The voltage readings should be similar if the correct wire gauge is used. If not, there may be a problem with the Controller, and we suggest consulting a technician.
Next, we will check the PV connection by testing for DC voltage above 150V at the PV terminals on the Controller. This reading should be the solar array's operating voltage or VMP, which can be found on the solar panel's specification sheet. The reading should be within +/- 10% of the overall VMP reading. If not, there may be an issue with the solar panel connectivity or reverse polarity. If the voltage discrepancy persists, consult a technician.
Got more concerns or want to know more about our products? Visit our Customer Support Page, or call (02) 5761 0297 for quick assistance.
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