Inverter hardware current too large
Also displayed as F25 on some models.
Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.
The exact meaning depends on your model:
Also applies to:IVCM2024 PROIVCM3024 PRO
Inverter hardware current too large — The inverter hardware current is too large.
Cause: The hardware over-current protection on the inverter stage tripped: a sudden current spike beyond the hardware limit, typically a load surge or an output fault.
Reduce the connected load by switching off some equipment.
Source: ICM.pdf, p.14
Also applies to:IVGM6KL-P1G1IVGM7K6L-P1G1IVGM8KL-P1G1
Battery over voltage fault — Battery voltage exceeds specification.
Cause: The voltage at the battery terminals exceeds the inverter's specified battery range — usually a pack whose configuration or specification does not match the inverter, or a charge source pushing the pack too high.
Source: Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf, p.53
Also applies to:T-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01T-REX-10KLP3G01
Hardware detect over current at inverter port
Cause: A hardware protection circuit tripped on overcurrent at the inverter port. It acts independently of the firmware and reacts to fast transients such as load inrush or a surge.
Restart the unit, if the error persists, contact the repair center.
Source: T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf, p.37 · T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf, p.38 · T-REX-10KLP3G01-Inverter-User-Guide.pdf, p.28
Also applies to:IVEM6048
OP current sensor failed
Cause: Output current sensor hardware failure.
Restart the unit, if the error persists, contact the repair center.
Source: felicitysolar IVEM 6048 Solar Inverter User Guide.pdf, p.37
Also applies to:IVEM12048-IIIVEM 8K-12K Series II
OP current sensor failed
Cause: Output current sensor failure.
Restart the unit, if the error persists, contact the repair center.
Source: IVEM8K-12K-II_compressed.pdf, p.44
Also applies to:IVEM8048
OP current sensor failed
Cause: The output current sensor returned an out-of-range or implausible reading, so the control board can no longer trust its output-current measurement.
Restart the unit, if the error persists, contact the repair center.
Source: FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf, p.38
Hardware detect over current at inverter port — Hardware-level over current detection at inverter port.
Cause: A hardware protection circuit tripped on overcurrent at the inverter port. It acts independently of the firmware and reacts to fast transients such as load inrush or a surge.
Restart the unit, if the error persists, contact the repair center.
Source: T-REX-10KHP3G01-Inverter-User-Guide.pdf, p.28
Battery 2 reverse connection fault — Battery 2 positive and negative poles is reversed, check the battery wiring.
Cause: Battery 2 is connected with positive and negative poles reversed, so the battery stage blocks it until the wiring is corrected.
Source: T-REX-50KHP3G01-user-manual-.pdf, p.46
Also applies to:Apollo-5KLP1G01-M1Apollo-5KLP1G01-M2Apollo-4K6LP1G01-MXApollo-4K6LP1G01-M1Apollo-4K6LP1G01-M2
Hardware detect over current at inverter port — Hardware detected over current at inverter port.
Cause: Hardware detect over current at inverter port.
Restart the unit, if the error persists, contact the repair center.
Source: Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.43
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.