Solar PV Inverter Faults

 

 

Solar PV inverters can experience a number of faults, some more common than others. Here are a few of the most frequent issues:

Overheating: Like most electronics, inverters are sensitive to heat. If the inverter gets too hot, it may reduce power production or shut down completely. This can be caused by poor ventilation, dust buildup, or high ambient temperatures.

Isolation Fault: This occurs due to a short circuit between different parts of the DC circuit. It’s often caused by moisture, damaged cabling, loose connections, or faulty installation. The inverter will usually stop working or severely limit function to prevent safety hazards.

MPPT Issues: The Maximum Power Point Tracking (MPPT) system ensures optimal power output from the solar panels. If the MPPT malfunctions, the inverter won’t be able to efficiently convert DC power to AC power.

General Inverter Faults: Other problems can arise from electronic component failures within the inverter itself. These can be more difficult to diagnose and may require a qualified technician.

Here are some things you can do to troubleshoot potential inverter faults:

Consult the inverter manual: Most inverters will have a display or error code system that can provide clues about the problem. The manual will explain what the codes mean and may suggest troubleshooting steps. We have trouble codes for SMA Sunnyboy, Solar River, Fronius and Power One in all models.

Check for obvious issues: Look for signs of overheating, loose connections, or damage to the inverter or cabling.

Verify proper operation: Make sure the inverter is receiving power from the grid and that the DC disconnect switch is turned on.

If you are unable to diagnose the fault yourself, it’s best to contact a Mr solar technician for further assistance. They will have the expertise and tools to safely troubleshoot and repair the inverter, Costs start at £99.

Call Mr Solar Now 01603 394104 or Contact us here