02Fault

Felicity inverter error 02 (F02)

Over current happen at PV port

Also displayed as F02 on some models.

Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.

Severity differs by model — check your model below.

The exact meaning depends on your model:

T-REX-3KLP1G01

InverterFault

Also applies to:T-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01T-REX-10KHP3G01T-REX-10KLP3G01

What it means

Over current happen at PV port

Cause: Current from the PV array exceeded the input stage's protection limit, so the inverter shut the PV input down.

How to fix it

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-10KHP3G01-Inverter-User-Guide.pdf, p.28 · T-REX-10KLP3G01-Inverter-User-Guide.pdf, p.27

IVEM 6048

InverterFault

Also applies to:IVEM6048

What it means

Bus voltage is too low

Cause: Internal components failed (inferred from similar fault classes).

How to fix it

Restart the unit, if the error persists, contact the repair center.

Source: felicitysolar IVEM 6048 Solar Inverter User Guide.pdf, p.36

IVEM8048-II

InverterFault

Also applies to:IVEM12048-IIIVEM 8K-12K Series II

What it means

Bus voltage is too low

Cause: Internal bus voltage abnormally low.

How to fix it

Restart the unit, if the error persists, contact the repair center.

Source: IVEM8K-12K-II_compressed.pdf, p.43

IVEM8048-LV

InverterFault

Also applies to:IVEM8048

What it means

Bus voltage is too low

Cause: The internal DC bus voltage fell below its operating range while running. The bus is regulated entirely inside the unit, so a persistent low reading points to an internal conversion-stage fault rather than external wiring.

How to fix it

Restart the unit, if the error persists, contact the repair center.

Source: FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf, p.37

T-REX-50KHP3G01

InverterFault

What it means

PV2 overvoltage fault — The voltage of the PV2 is too high, check the voltage of the string.

Cause: The open-circuit voltage of the PV2 string is above the inverter's permitted DC input range — typically a string configured with too many modules in series.

How to fix it

  1. Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
  2. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: T-REX-50KHP3G01-user-manual-.pdf, p.45

Apollo-5KLP1G01-MX

Energy storage systemFault

Also applies to:Apollo-5KLP1G01-M1Apollo-5KLP1G01-M2Apollo-4K6LP1G01-MXApollo-4K6LP1G01-M1Apollo-4K6LP1G01-M2

What it means

Over current happen at PV port — Over current detected at PV port.

Cause: Over current happen at PV port.

How to fix it

Restart the unit, if the error persists, contact the repair center.

Source: Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.42

LUX-X-96050HG01

BatteryWarning

Also applies to:LUX-X-96050HMG01LUX-X-96050HCG01

What it means

Low Battery Voltage — Battery pack voltage below the lower threshold.

Cause: Battery pack overall voltage too low (over-discharge condition).

How to fix it

  1. Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
  2. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: LUX-X-96050HG01-Lithium-Battery-User-Guide.pdf, p.21

LUX-Y-48100HG01

BatteryWarning

Also applies to:LUX-Y-48100HCG01LUX-Y-48100HMG01LUX-Y-48100HR13G01LUX-Y-48100HR9G01

What it means

Low Battery Voltage — Battery pack voltage fell below the lower threshold.

Cause: Battery pack overall voltage too low — an over-discharge condition.

How to fix it

  1. Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
  2. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: LUX-Y-48100HG01-Lithium-Battery-User-Guide.pdf, p.20

LUX-Y-48100HG01MN

BatteryFault

What it means

Low Battery Voltage

Cause: Battery pack overall voltage too low — an over-discharge condition.

How to fix it

  1. Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
  2. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: LUX-Y-48100HG01MN User manual 358-S010025-03 0325(V2.0).pdf, p.27

SCCM3024-III

Charge controllerCritical

Also applies to:SCCM4524-IIISCCM4548-IIISCCM6048-IIISCCM8048-IIISCCM10048-IIISCCM12048-III

What it means

Over temperature — The charge controller's internal temperature has exceeded its safe operating range.

Cause: Controller is operating in a hot environment or has insufficient airflow/ventilation, causing the heatsink temperature to exceed safe limits.

How to fix it

  1. Keep the charger in the cool environment
  2. If the problem remains, please contact your installer.

Source: felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf, p.18

LUX-S-1600LG01

BatteryFault

What it means

Battery voltage is too low — Fault event: battery pack voltage below the lower threshold. Inverter cuts off output and fault LED solid on.

Cause: Battery pack voltage fell below the lower protection threshold — an over-discharge condition.

How to fix it

  1. Restart the unit.
  2. If the error persists, contact the repair center.

Source: LUX-S-1600LG01.pdf, p.22

Frequently asked questions

What does error 02 mean on a Felicity inverter?
It depends on the model — 13 devices use code 02. On the T-REX-3KLP1G01 it means: Over current happen at PV port. The card for each model on this page gives its exact meaning and fix.
Is error 02 a fault or a warning?
It depends on the model: on some models 02 is a fault (output cut, red LED solid), on others a warning (red LED flashing, unit keeps running). Check the card for your model on this page.
How do I clear or fix error 02?
Restart the unit, if the error persists, contact the repair center. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the T-REX-3KLP1G01

All T-REX-3KLP1G01 codes All T-REX-10KHP3G01 codes All T-REX-10KLP3G01 codes

Other codes on the IVEM 6048

All IVEM 6048 codes

Other codes on the IVEM8048-II

All IVEM8048-II codes

Other codes on the IVEM8048-LV

All IVEM8048-LV codes

Other codes on the T-REX-50KHP3G01

All T-REX-50KHP3G01 codes

Other codes on the Apollo-5KLP1G01-MX

All Apollo-5KLP1G01-MX 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.