Faults for over charging current of built-in MPPT
Also displayed as F83 on some models.
Warning — the red LED flashes and the inverter keeps running. Deal with it before it escalates.
Severity differs by model — check your model below.
The exact meaning depends on your model:
Also applies to:IVPS2512IVPS2524IVPS3524IVPS5024IVPS5048IVPS7548IVPS-7548IVPS10048+3
Faults for over charging current of built-in MPPT — The built-in MPPT charge controller reports charging over current.
Cause: The charging current of the built-in MPPT charge controller is too high.
Source: IVPS-IVPM User Guide.pdf, p.18
Also applies to:IVGM6KL-P1G1IVGM7K6L-P1G1IVGM8KL-P1G1
Radiator over-temperature derating alarm — The inverter will reduce power if the heat sink temperature is too high.
Cause: The heat-sink temperature has climbed to the derating threshold, so the inverter reduces output power to hold it there — poor ventilation or high ambient temperature is the usual reason.
Improve ventilation; reduce ambient temperature.
Source: Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf, p.52
Inverter relay open circuit fault — Inverter relay not closing properly causing open circuit, shutdown and restart.
Cause: A safety relay inside the inverter has failed self-test or is stuck. The inverter is designed to refuse grid connection in this state, so this is not an issue you can clear with restart cycles.
Source: T-REX-50KHP3G01-user-manual-.pdf, p.48
Prefer the full written guide? Read the complete Felicity inverter error-code guide
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.