GP-MPPT-60-Pro Trouble Shooting Steps
Controller not putting current to the battery.
Problem Description:
Controller does not charge batteries/Controller shows "0.0" amps charging
Explanation:
Possible issues could be a controller not putting current to the battery or a solar panel outputting voltage but not current or a full battery and the controller not putting current to the battery because it is full. Could be a wiring issue between the solar panel on the roof and the controller.
Troubleshooting steps:
- Ensure batteries are not full, charging amps will drop to near zero if batteries are full (meter the batteries, do not trust the display from the controller). In other words, if the battery is full the controller will not put current to them.
- Ensure solar panel is clean and is in direct sunlight. An obstructed/dirty panel will yield poor results
- Check input voltage at controller from solar panel (~16V-23V based on solar panel rating and sun conditions)
- 4. Use a multimeter to measure output current at each panel. (Note meter must be fused to 10 amps) It is possible the panel outputs current but not voltage. If either voltage or current output is low replace panel.
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- Check wiring from solar panel to controller and controller to the batteries
- Check for any fuse in-line in the system
- Perform a hard reset on device. Disconnect all four wires from the back of the device and let sit for 15 minutes - reconnect all four wires and recheck. If current is getting to the controller and the controller is still not putting it to the battery after a hard reset, the problem may be with the controller.
Problem, Low solar voltage, or current getting to controller.
Problem Description:
Explanation:
If there is a low solar voltage appearing on the controller, then the controller is not seeing voltage coming from the solar panel or panels. When the controller sees no light on the solar panel, it thinks it is night-time and shows low voltage. The first step is to determine how the panels are wired, series, or parallel. This will indicate how much voltage one should expect. Parallel would be 16-23 vdc while series could be 20-80 volts depending on how many panels are installed.
Trouble shooting
- 1. Check the input voltage coming from each solar panel on the back of the solar controller with a multimeter. It should be between 16-23 Volts if in parallel (this number may be lower on cloudy days) depending on sun conditions. If it is 13 volts or lower, then this is the reason the display shows low solar voltage.
- If it is 12-13 volts or lower, remove the wires from the solar panel on the back of the solar controller and measure across the raw leads (wires). If the voltage remainslow, there may be a connection issue between the solar panel and the solar controller or a problem with the output of the solar panel. If the voltage goes up, then there may be a problem with the current output of the solar panel or a connection issue causing a current drop.
- Next check both the voltage and current output at the solar panel or if multiple panels are installed at each panel individually. You should still see the 16-23 VDC depending on the sun conditions.
- If possible, take a current reading of the panel as well. If the panel produces voltage but not DC power as soon as it is connected to the solar controller, the voltage will drop. The current should be between 2-9 amps depending on sun conditions and the size of the solar panel. If one panel is lower than the others, then there is an issue with just this panel. If all are the same, then trace the wires back to the controller with the meter and determine if there is a connection issue. If there is a current or voltage issue from the panel, the panel will need to be replaced. Or a connection issue between the controller and the solar panel was repaired.
- If voltage and current are getting to the solar controller from the panel and the moon symbol is still visible, try a hard reset on the solar controller. Remove all 4 wires from the back of the controller for 30 minutes, then reconnect the wires. Battery first then solar
To Change the charge profile
Error Codes on controller
