Solar charging controller is broken

‌The Solar Charge controller is a key component in the solar system. It is responsible for managing the electricity generated by the solar panels and storing it in the battery, while controlling the power supply of the load equipment. When the solar charge controller fails, the following phenomena will occur:

‌Unable to charge‌: If there is voltage on the solar panel but it cannot be charged, it may be that the solar panel interface of the controller is in poor contact or the battery connection is unreliable. In addition, the reverse polarity of the solar panel will also cause the failure to charge. ‌

‌Abnormal charging indicator‌: The rapid flashing of the charging indicator may indicate that the system voltage is overvoltage. It is necessary to check whether the battery is open-circuited or unreliably connected, or the charging circuit is damaged. ‌

‌Load does not work‌: The load indicator is on but the load does not work, which may be unreliable wiring at the load end. The load indicator flashes quickly and the load does not work, which may be a short circuit on the load; the load indicator flashes slowly and the load does not work, which may be excessive load power.

‌Battery problem‌: The battery cannot be charged, which may be due to battery depletion or serious reduction in storage capacity. The battery is out of power after a short period of use, which may be due to very small battery capacity or wiring problems.

‌ Short lighting time ‌: The lighting time is short on rainy days, which usually means that the battery's storage capacity has decreased and a reasonable battery needs to be replaced.

‌ Abnormal indicator light ‌: If the controller is damaged and the indicator light is not working properly, the LED may not light up or the indicator light may display abnormally. ‌

‌ Overcharge or over discharge ‌: Overcharge or over discharge failures can damage the battery and affect system performance. Overcharge may be caused by the controller's inability to correctly judge the battery's charging status, resulting in continuous current flowing into the battery, exceeding the safe voltage; over discharge will cause the battery to run out of power, affecting its service life. ‌

Solving these problems usually requires overhauling the controller, checking whether the wiring is correct, replacing damaged parts, adjusting the load, etc. If the problem persists, the entire controller may need to be replaced. ‌