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R
Ross DaviesAug 9, 2025
What to do if my Axpert Inverter shows a 09 fault?
- EesalinasAug 9, 2025
If your Axpert Inverter displays a 09 fault, it indicates that the DC-DC module is damaged. You can repair the main board or replace it directly.
What to do if my Axpert Inverter shows a 09 fault?
If your Axpert Inverter displays a 09 fault, it indicates that the DC-DC module is damaged. You can repair the main board or replace it directly.
What to do if my Axpert Inverter shows a 56 fault?
If your Axpert Inverter displays a 56 fault, it means the wire connection or fuse was burnt. You can repair the main board or replace it directly.
Why is my Axpert Inverter not working and has no display?
If your Axpert Inverter is not working at all and there is no display, the SPS module is likely damaged. Replace the main board to resolve this issue.
Covers 'No display', '09 fault', '56 fault' with causes, checks, and solutions.
Checking DC/DC MOSFETs (e.g., Q13, Q18) for shorts or explosions.
Checking transistors like Q46, Q48 (NPN) and Q41, Q43 (NPN) for resistance and diode properties.
Checking transistors Q47, Q49, Q15, Q16, Q54, Q56, Q51, Q52, Q55, Q57, Q50, Q53.
Checking MOSFETs Q60/Q61 for resistor and diode properties.
Checking DC/DC IGBTs (Q30, Q29, Q27, Q28) for resistance and diode values.
Checking buck MOSFET (Q32) and diode (D13) for resistance and diode properties.
Checking INV/PFC IGBTs (QB2/QD2, QA1/QC1, QD4/QD3) for resistance and diode values.
Checking MPPT board power devices (Q2, Q3, etc.) for resistance and diode properties.
General
