Most common solar panel problems and how to solve them

common solar panel problems

While quality solar panels are built to guarantee power output for 20-25 years, you can still encounter common solar panel problems brought by other system components. Being aware of these common issues is vital so you can anticipate the steps to fixing them when the need arises. 

The most common solar panel problems are either caused by a dysfunctional inverter or the charge controller. You might encounter (1) an absence of power output or (2) a low voltage issue. 

Absence of power output

The absence of power output is one of the most common solar panel problems, affecting nine out of ten home or building owners. The most probable causes of this issue are either you have a faulty charge controller or one or more of the solar panels in the array is malfunctioning.  

If your charge controller stops working, it is likely caused by either a battery issue, faulty system wiring, or a problem with the solar charge controller settings. If the voltage cannot be measured, it may be a problem with the solar panel or rectifier diode.

Low voltage issue

If your system is not giving you the power it is calibrated to provide, you can attribute it to various possibilities, such as shading, temperature, or even faulty connection. 

Ensure that there are no trees and other objects around the panels, including shadows at certain periods of the day. If you have installed your solar panels years back, remember that trees grow or birds can put up nests over time. It is always best to conduct a quarterly survey of your area of installation. 

If you are sure that there are no objects hindering sunlight, proceed to check the operating temperature of your solar panels. Tendencies of voltage produced by your solar panels dropping with the rise of temperature may happen. Extreme heat may affect your solar system performance. Adding more modules to increase the string voltage usually does the trick. Also, ensure that there is sufficient air circulation under your panels. 

If the vicinity is clear and the temperature is not rising as per usual, the next thing to check is the connection. There could be problems with the wiring. A faulty or loose connection could result in low power output. A multi-meter is usually used to check voltage levels at different points to determine which area of issue. 

Solve common solar panel problems by seeking help

After checking these probable issues and performing these basic troubleshooting steps and you still cannot pinpoint what’s causing the problem, it is best to seek help from a certified specialist on solar panels. Evergreen Solar is Puget Sound’s has a team of trusted solar energy specialists who are experienced and capable of bringing your system back to peak performance. Contact us today for a free consultation. 


Signed by Wisam Hakim