Inverter current sensor faulty
Also displayed as F29 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 current sensor faulty — The inverter current sensor is faulty.
Cause: The inverter-stage current sensor is faulty and its readings can no longer be trusted. This is an internal component failure.
Contact the repair center.
Source: ICM.pdf, p.14
Also applies to:T-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01T-REX-10KHP3G01T-REX-10KLP3G01
Inverter current sensor failed
Cause: The inverter-stage current sensor returned an out-of-range or implausible reading, so the control board can no longer trust its inverter current measurement.
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.38 · T-REX-10KHP3G01-Inverter-User-Guide.pdf, p.28 · T-REX-10KLP3G01-Inverter-User-Guide.pdf, p.28
Also applies to:IVEM6048
DC/DC soft start fail
Cause: Internal failure during DC/DC soft start.
Restart the unit, if the error persists, contact the repair center.
Source: felicitysolar IVEM 6048 Solar Inverter User Guide.pdf, p.38
Also applies to:IVEM12048-IIIVEM 8K-12K Series II
DC/DC soft start fail
Cause: DC/DC converter soft start failure.
Restart the unit, if the error persists, contact the repair center.
Source: IVEM8K-12K-II_compressed.pdf, p.44
Also applies to:IVEM8048
DC/DC soft start fail
Cause: The DC/DC converter failed to ramp up to its working voltage during soft start, which indicates an internal component fault rather than a wiring problem.
Restart the unit, if the error persists, contact the repair center.
Source: FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf, p.39
Battery 2 relay short circuit fault — Battery 2 relay not properly disconnected causing short 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.46
Also applies to:Apollo-5KLP1G01-M1Apollo-5KLP1G01-M2Apollo-4K6LP1G01-MXApollo-4K6LP1G01-M1Apollo-4K6LP1G01-M2
Inverter current sensor failed
Cause: Inverter current sensor failed.
Restart the unit, if the error persists, contact the repair center.
Source: Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.43
All T-REX-3KLP1G01 codes All T-REX-10KHP3G01 codes All T-REX-10KLP3G01 codes
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.