Where can I find the official Felicity T-REX-10KHP3G01 error code manual?

Each code on this page lists the official source manual filename and page number at the bottom. The manuals are published by Felicity on their website; we compile the codes here so you can search across all of them at once instead of opening each PDF.

Is the T-REX-10KHP3G01 the same as other Felicity models?

Some Felicity units share firmware across a family of variants — the same fault codes apply to multiple model numbers. Look at the "also covers" chips below the title to see which other model numbers this page applies to.

What's the most critical code on a Felicity T-REX-10KHP3G01?

Critical-severity codes (red dot) are the ones that trip the unit offline immediately — typically short-circuit, IGBT, or BMS hardware failures. These are listed first when you filter by severity. Do not bypass them; they indicate a hardware or safety condition that requires service.

What does F01 mean on T-REX-10KHP3G01?

PV input voltage exceeds permitted range. Cause: Too many PV modules connected in series. Fix: Reduce the number of PV modules in series.

What does F02 mean on T-REX-10KHP3G01?

Over current detected at the PV port. Fix: Restart the unit, if the error persists, contact the repair center.

What does F04 mean on T-REX-10KHP3G01?

Short circuit at the PV port. Fix: Check if wiring is connected well.

What does F06 mean on T-REX-10KHP3G01?

PV current sensor failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F07 mean on T-REX-10KHP3G01?

Battery voltage exceeds the permitted range. Fix: Check if spec and quantity of batteries are meet requirements.

What does F11 mean on T-REX-10KHP3G01?

Over current detected at Buckboost stage. Fix: Restart the unit, if the error persists, contact the repair center.

What does F15 mean on T-REX-10KHP3G01?

Buckboost current sensor failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F17 mean on T-REX-10KHP3G01?

Overload condition has timed out. Fix: Reduce the connected load by switching off some equipment.

What does F19 mean on T-REX-10KHP3G01?

Short circuit on the inverter output. Fix: Check if wiring is connected well and remove abnormal load.

What does F20 mean on T-REX-10KHP3G01?

Input and output wiring is reversed. Fix: Confirm that the input and output wiring is correct.

What does F21 mean on T-REX-10KHP3G01?

Output current sensor failed. Fix: Output current sensor failed.

What does F22 mean on T-REX-10KHP3G01?

Output voltage is below permitted level. Fix: Reduce the connected load.

What does F23 mean on T-REX-10KHP3G01?

Output voltage exceeds permitted level. Fix: Restart the unit, if the error persists, contact the repair center.

What does F24 mean on T-REX-10KHP3G01?

Over current or surge detected by software protection. Fix: Restart the unit, if the error persists, contact the repair center.

What does F25 mean on T-REX-10KHP3G01?

Hardware-level over current detection at inverter port. Fix: Restart the unit, if the error persists, contact the repair center.

What does F26 mean on T-REX-10KHP3G01?

Inverter soft start procedure failed. Cause: Internal components failed. Fix: Restart the unit, if the error persists, contact the repair center.

What does F28 mean on T-REX-10KHP3G01?

Abnormal DC component detected in inverter current. Fix: Restart the unit, if the error persists, contact the repair center.

What does F29 mean on T-REX-10KHP3G01?

Inverter current sensor failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F30 mean on T-REX-10KHP3G01?

DC bus voltage below permitted level. Fix: Restart the unit, if the error persists, contact the repair center.

What does F31 mean on T-REX-10KHP3G01?

DC bus voltage exceeds permitted level. Cause: AC Surge or internal components failed. Fix: Restart the unit, if the error persists, contact the repair center.

What does F32 mean on T-REX-10KHP3G01?

DC bus voltage unbalance detected. Fix: Restart the unit, if the error persists, contact the repair center.

What does F33 mean on T-REX-10KHP3G01?

DC bus soft start procedure failed. Cause: Internal components failed. Fix: Restart the unit, if the error persists, contact the repair center.

What does F34 mean on T-REX-10KHP3G01?

Heat sink over temperature. Fix: Check whether the ambient temperature is too high.

What does F35 mean on T-REX-10KHP3G01?

Inner / internal temperature too high. Fix: Check whether the ambient temperature is too high.

What does F38 mean on T-REX-10KHP3G01?

Ground leakage current fault. Fix: Restart the unit, if the error persists, contact the repair center.

What does F39 mean on T-REX-10KHP3G01?

Leakage current sensor failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F40 mean on T-REX-10KHP3G01?

PV string isolation resistance to ground below permitted threshold. Fix: Restart the unit, if the error persists, contact the repair center.

What does F42 mean on T-REX-10KHP3G01?

Relay self-check failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F48 mean on T-REX-10KHP3G01?

Parallel installation abnormality detected. Fix: Contact after-sales service for installation technical guidance.

What does F49 mean on T-REX-10KHP3G01?

Negative power protection triggered in parallel system. Fix: Restart the unit, if the error persists, contact the repair center.

What does F50 mean on T-REX-10KHP3G01?

EEPROM read/write failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F51 mean on T-REX-10KHP3G01?

DSP1 communication failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F52 mean on T-REX-10KHP3G01?

DSP2 communication failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F54 mean on T-REX-10KHP3G01?

Temperature sensor disconnected or not detected. Fix: Restart the unit, if the error persists, contact the repair center.

What does F87 mean on T-REX-10KHP3G01?

Battery input circuit failure. Fix: Restart the unit, if the error persists, contact the repair center.

What does F91 mean on T-REX-10KHP3G01?

Number of battery packs in series has not been set. Fix: Please set it correctly according to the number of battery packs used by the inverter.

What does W09 mean on T-REX-10KHP3G01?

Overload warning. Audible alarm: beep twice every second. Fix: Reduce the loads.

What does W41 mean on T-REX-10KHP3G01?

Fault information warning. Fix: Can restart through 'Fsolar app'.

What does W51 mean on T-REX-10KHP3G01?

BMS does not permit the inverter to discharge the battery. Fix: Inverter will stop discharging battery automatically.

What does W52 mean on T-REX-10KHP3G01?

BMS requires the inverter to charge the battery. Fix: Inverter will charge battery automatically.

T-REX-10KHP3G01

Inverter50 codes

6 Critical 36 Fault 8 Warning

About the Felicity T-REX-10KHP3G01

The Felicity T-REX-10KHP3G01 is a Inverter unit. The 50 error codes listed below are the complete fault catalog for this device, compiled from the official Felicity user manual.

How to use this page

Each row below shows an error code, its severity, and a brief description. Click any row to expand the full cause and the recommended fix. The severity dot tells you whether the unit will keep operating (warning), derate (fault), or trip offline (critical). For codes that require an authorized service partner, the recommended-fix block says so explicitly.

F01PV voltage is too high.Fault

Description

PV input voltage exceeds permitted range.

Cause

Too many PV modules connected in series.

Recommended fix

Reduce the number of PV modules in series.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F02Over current happen at PV port.Fault

Description

Over current detected at the PV port.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F04Short circuit happen at PV port.Critical

Description

Short circuit at the PV port.

Recommended fix

Check if wiring is connected well.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F06PV current sensor failed.Fault

Description

PV current sensor failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F07Battery voltage is too high.Fault

Description

Battery voltage exceeds the permitted range.

Recommended fix

Check if spec and quantity of batteries are meet requirements.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F11Over current happen at Buckboost.Fault

Description

Over current detected at Buckboost stage.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F15Buckboost current sensor failed.Fault

Description

Buckboost current sensor failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F17Overload time out.Fault

Description

Overload condition has timed out.

Recommended fix

Reduce the connected load by switching off some equipment.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F19Output short circuited.Critical

Description

Short circuit on the inverter output.

Recommended fix

Check if wiring is connected well and remove abnormal load.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F20Input output reverse.Critical

Description

Input and output wiring is reversed.

Recommended fix

Confirm that the input and output wiring is correct.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F21OP current sensor failed.Fault

Description

Output current sensor failed.

Recommended fix

Output current sensor failed.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F22Output voltage is too low.Fault

Description

Output voltage is below permitted level.

Recommended fix

Reduce the connected load.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F23Output voltage is too high.Fault

Description

Output voltage exceeds permitted level.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F24Over current or surge detected by Software.Fault

Description

Over current or surge detected by software protection.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F25Hardware detect over current at inverter port.Critical

Description

Hardware-level over current detection at inverter port.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F26Invert soft start failed.Fault

Description

Inverter soft start procedure failed.

Cause

Internal components failed.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F28The DC component of the inverter current is abnormal.Fault

Description

Abnormal DC component detected in inverter current.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F29Inverter current sensor failed.Fault

Description

Inverter current sensor failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F30Bus voltage is too low.Fault

Description

DC bus voltage below permitted level.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 28

F31Bus voltage is too high.Fault

Description

DC bus voltage exceeds permitted level.

Cause

AC Surge or internal components failed.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F32Bus voltage unbalance.Fault

Description

DC bus voltage unbalance detected.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F33Bus soft start failed.Fault

Description

DC bus soft start procedure failed.

Cause

Internal components failed.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F34Over temperature happen at heat sink.Fault

Description

Heat sink over temperature.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F35The inner temperature over.Fault

Description

Inner / internal temperature too high.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F38Leakage current fault.Critical

Description

Ground leakage current fault.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F39Leakage current sensor failed.Fault

Description

Leakage current sensor failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F40Isolation resistance to ground of the PV string is too low.Critical

Description

PV string isolation resistance to ground below permitted threshold.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F42Relay check failure.Fault

Description

Relay self-check failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F43CAN data loss.Fault

Description

Loss of CAN bus communication data.

Recommended fix

Check if communication cables are connected well and restart the inverter. if the problem remains, please contact your installer.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F44Host data loss.Fault

Description

Host data loss.

Recommended fix

Check if communication cables are connected well and restart the inverter. if the problem remains, please contact your installer.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F45Synchronization data loss.Fault

Description

Synchronization data loss between paralleled units.

Recommended fix

Check if communication cables are connected well and restart the inverter. if the problem remains, please contact your installer.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F46The firmware version of each inverter is not the same.Fault

Description

Inverters in parallel have different firmware versions.

Recommended fix

Update all inverter firmware to the same version. Check the version of each inverter via LCD setting and make sure the CPU versions are same. if not, please contact your installer to provide the firmware to update. After updating, if the problem still remains, please contact your installer.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F47The inverter Settings are inconsistent.Fault

Description

Inverter settings differ between parallel units.

Recommended fix

Through the LCD control button on the inverter, the parameters of the machine are set to the same as those of other machines. if the problem persists, contact the after-sales service.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F48Parallel installation is abnormal.Fault

Description

Parallel installation abnormality detected.

Recommended fix

Contact after-sales service for installation technical guidance.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F49Parallel negative power protection.Fault

Description

Negative power protection triggered in parallel system.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F50EEPROM failure.Fault

Description

EEPROM read/write failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F51DSP1 communication failure.Fault

Description

DSP1 communication failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F52DSP2 communication failure.Fault

Description

DSP2 communication failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F53PV parallel failure.Fault

Description

PV parallel mode operation failure.

Recommended fix

Please confirm whether PV1 and PV2 need to be set to parallel mode. if not, please turn off this function in APP. if necessary, please confirm whether the wiring of PV1 and PV2 is connected to parallel mode.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F54Temperature sensor disconnected.Fault

Description

Temperature sensor disconnected or not detected.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F87Battery input circuit failure.Fault

Description

Battery input circuit failure.

Recommended fix

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

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

F91The number of battery packs in series has not been set.Fault

Description

Number of battery packs in series has not been set.

Recommended fix

Please set it correctly according to the number of battery packs used by the inverter.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 29

W07Low battery.Warning

Description

Low battery warning indicated on LCD with flashing fault LED.

Cause

The battery voltage is too low.

Recommended fix

Battery should be charging.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W09Overload.Warning

Description

Overload warning. Audible alarm: beep twice every second.

Recommended fix

Reduce the loads.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W25Phase sequence error.Warning

Description

Phase sequence error warning.

Recommended fix

Please check the phase sequence to ensure that the line sequence is correct.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W41Fault information.Warning

Description

Fault information warning.

Recommended fix

Can restart through 'Fsolar app'.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W51BMS doesn't allow inverter to discharge battery.Warning

Description

BMS does not permit the inverter to discharge the battery.

Recommended fix

Inverter will stop discharging battery automatically.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W52BMS require inverter to charge battery.Warning

Description

BMS requires the inverter to charge the battery.

Recommended fix

Inverter will charge battery automatically.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W60BMS firmware version is not matched.Warning

Description

BMS firmware version mismatch.

Recommended fix

Upgrade the firmware of BMS.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

W91The number of battery packs in series has not been set.Warning

Description

Number of battery packs in series has not been set.

Recommended fix

Please set it correctly according to the number of battery packs used by the inverter.

Source:T-REX-10KHP3G01-Inverter-User-Guide.pdf · page 27

Step-by-step troubleshooting checklist

1.Note the exact code and timing
Write down the exact code shown on the display, what the unit was doing when it appeared (charging, discharging, idle, grid-tied), and any LEDs or audible alarms. The same code can have different fixes depending on context.
2.Check the recommended fix on this page
Find the code in the list below and read the cause + recommended fix. Most warning-level codes can be cleared by following the listed action — usually reducing load, checking wiring, or restarting the unit.
3.Verify the source manual page
Each code shows the source manual filename and page number. Open that exact page in the official manual to verify model-specific notes (firmware version, parallel-config notes, regional variants) before acting.
4.Disconnect AC, DC, and battery before opening
If a fix requires opening the enclosure or accessing terminals, disconnect AC input, DC PV, and battery in that order. Wait at least 60 seconds for capacitors to discharge before touching any conductors.
5.Escalate critical codes to authorized service
Critical codes (short-circuit, IGBT failure, BMS hardware error) should not be cleared by end users. Note the code, model number, and source manual page, then contact an authorized service partner.

Common questions about T-REX-10KHP3G01 error codes

Where can I find the official Felicity T-REX-10KHP3G01 error code manual?: Each code on this page lists the official source manual filename and page number at the bottom. The manuals are published by Felicity on their website; we compile the codes here so you can search across all of them at once instead of opening each PDF.
Is the T-REX-10KHP3G01 the same as other Felicity models?: Some Felicity units share firmware across a family of variants — the same fault codes apply to multiple model numbers. Look at the "also covers" chips below the title to see which other model numbers this page applies to.
What's the most critical code on a Felicity T-REX-10KHP3G01?: Critical-severity codes (red dot) are the ones that trip the unit offline immediately — typically short-circuit, IGBT, or BMS hardware failures. These are listed first when you filter by severity. Do not bypass them; they indicate a hardware or safety condition that requires service.