Sunna Solar Inverter Repair

The Sunna Grid Connect Solar Inverter

sunna inverter repairThere is no manufacturers support available for the Sunna Solar inverter, however most problems can be repaired.There are two options if your Sunna solar inverter has stopped working.


  • Option 1: Purchase a new Inverter.
  • Option 2: Get the Inverter Repaired.

Option 1: Purchasing a new Inverter to replace the Sunna.

If you decide you want to purchase a new inverter, then we suggest the following inverter choices. We base this on knowing the inverters below will just plug straight into your existing Sunna installation, which means your electrician will easily do the swap over for you.

Solis 1.5kW Grid Tie Inverter

JSI-2000, JSI-2500
Solis 2.0kW Grid Connect Inverter

JSI-3000, Suntwins 3300TL, Sunseed-3000TL, Sunleaf-3000TL
Solis 3kW Grid Connect Inverter

Suntwins 4000TL, Sunseed-4000TL
Solis 4.0kW Grid Connect Inverter

JSI-5000,Suntree-5000TL, Sunseed-5000TL
Solis 5.0kW Grid Connect Inverter

Option 2: Get the JFY Solar Inverter Repaired

This is where we can help.. the process is straight forward. You will need to arrange for an electrician to get the inverter off the wall and into a box; once done we will arrange a courier to pick it up and send it to us, we will fix it, and have it sent back to you – the whole process takes about 14 days from pickup to drop off.
Below are some of the most common JFY inverter faults we find:

Output Relay Fault

The output relay fault is a very common problem; sometimes it means the relays need to be replaced, sometimes it will be the output filter capacitors collapsing; either way the inverter will need to be sent to us for repair. When we repair the relays we use OMRON relays, there are a robust industry leading relay and will give much better service life.

There is no life in the inverter
By this I mean there is nothing on the screen, no lights are on. This will be the internal power supply on the inverter; the power supply is famous for collapsing prematurely. The good news is we can refurbish the power supply and get it working properly, while we are fixing the power supply we will also make a few minor modifications to it so it will last longer

Send your Inverter for Repair