Off Grid Inverter

How to upgrade SPF 3500 ES, 5000 ES, SPF 6000ES PLUS Attention, Please! Before you upgrade inverter, please make sure that you have checked current firmware version of inverter and it matches same series of firmware verson. Because of serveral kind of control boards, different series of control boards can’t be flashed each other, or …

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How to Disassemble SPF 3500-5000ES Google Video Link: https://drive.google.com/file/d/1PFtuti12q0WWNIGP92LTGV9pGLyWjUGL/view?usp=sharing

SPF 3500-5000ES AC Output Priority SOL : Solar energy will supply power for load for first priority If Solar energy is not sufficient, battery will supply power for the load at the same time. Utility input will supply power for load , only when one of conditions below triggers Solar energy is not availabe that …

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Case 1: Testing Method: Please Just connect battery system into the inverter Try to restart the inverter. If still abnormal, try to recover the factory set. Recover factory set procedure: a. Please kindly press UP and Down at the same time. b. Then type the password: 305 c. Thirdly, find 34th option and press Enter …

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SPF 3500-5000ES 62fault 62fault means Internal communication error Triggering condition:  It has exceeded 10s（20ms*500）since control board can’t receive the data from other chips like M3 chip on control board, Driving chip from MPPT board, mainboard etc. Testing Method: Restart the inverter, check if 62fault will disappear After restarting it, if it is still not …

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Triggering Condition: When AC output voltage reaches 280V and lasts for 200ms. It will have the error Testing Method: Please just connect the inverter to battery system, Switch on the inverter, if 06 still occurs, it means DC-ACcircuit has the trouble Malfunction Position: Repairing Method: a. please kindly turn to diode position on multimeter. b. …

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