Where can I find the official Felicity T-REX-10KLP3G01 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-10KLP3G01 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-10KLP3G01?

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 F02 mean on T-REX-10KLP3G01?

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

What does F04 mean on T-REX-10KLP3G01?

Short circuit happen at PV port. Fix: Check if wiring is connect well.

What does F07 mean on T-REX-10KLP3G01?

Battery voltage is too high. Cause: Battery specification or quantity does not meet requirements. Fix: Check if spec and quantity of batteries are meet requirements.

What does F08 mean on T-REX-10KLP3G01?

Over current happen at Battery. Fix: Restart the unit, if the error persists, contact the repair center.

What does F11 mean on T-REX-10KLP3G01?

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

What does F13 mean on T-REX-10KLP3G01?

Buckboost soft start failed. Fix: Restart the unit, if the error persists, contact the repair center.

What does F15 mean on T-REX-10KLP3G01?

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

What does F17 mean on T-REX-10KLP3G01?

Overload time out. Cause: Connected load is too high. Fix: Reduce the connected load by switching off some equipment.

What does F18 mean on T-REX-10KLP3G01?

The output overcurrent is abnormal. Fix: Restart the unit, if the error persists, contact the repair center.

What does F19 mean on T-REX-10KLP3G01?

Output short circuited. Cause: Wiring fault or abnormal load on the output. Fix: Check if wiring is connected well and remove abnormal load.

What does F21 mean on T-REX-10KLP3G01?

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

What does F22 mean on T-REX-10KLP3G01?

Output voltage is too low. Cause: Connected load is too high. Fix: Reduce the connected load.

What does F23 mean on T-REX-10KLP3G01?

Output voltage is too high. Fix: Restart the unit, if the error persists, contact the repair center.

What does F24 mean on T-REX-10KLP3G01?

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

What does F25 mean on T-REX-10KLP3G01?

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

What does F26 mean on T-REX-10KLP3G01?

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

What does F28 mean on T-REX-10KLP3G01?

The DC component of the inverter current is abnormal. Fix: Restart the unit, if the error persists, contact the repair center.

What does F29 mean on T-REX-10KLP3G01?

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

What does F30 mean on T-REX-10KLP3G01?

Bus voltage is too low. Fix: Restart the unit, if the error persists, contact the repair center.

What does F31 mean on T-REX-10KLP3G01?

Bus voltage is too high. 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-10KLP3G01?

Bus voltage unbalance. Fix: Restart the unit, if the error persists, contact the repair center.

What does F33 mean on T-REX-10KLP3G01?

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

What does F34 mean on T-REX-10KLP3G01?

Over temperature happen at heat sink. Cause: Ambient temperature is too high. Fix: Check whether the ambient temperature is too high.

What does F35 mean on T-REX-10KLP3G01?

The inner temperature is too high. Cause: Ambient temperature is too high. Fix: Check whether the ambient temperature is too high.

What does F38 mean on T-REX-10KLP3G01?

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

What does F39 mean on T-REX-10KLP3G01?

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

What does F40 mean on T-REX-10KLP3G01?

Isolation resistance to ground of the PV string is too low. Fix: Restart the unit, if the error persists, contact the repair center.

What does F48 mean on T-REX-10KLP3G01?

Parallel installation is abnormal. Fix: Contact after-sales service for installation technical guidance.

What does F49 mean on T-REX-10KLP3G01?

Parallel negative power protection. Fix: Restart the unit, if the error persists, contact the repair center.

What does F51 mean on T-REX-10KLP3G01?

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

What does F52 mean on T-REX-10KLP3G01?

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

What does F87 mean on T-REX-10KLP3G01?

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

What does F91 mean on T-REX-10KLP3G01?

The number of battery packs in series has not been set. Cause: The 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-10KLP3G01?

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

What does W91 mean on T-REX-10KLP3G01?

The number of battery packs in series has not been set. Cause: The 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.

T-REX-10KLP3G01

Q: What does F01 mean on T-REX-10KLP3G01?

PV voltage is too high. Cause: PV input voltage exceeds inverter limits (too many PV modules in series). Fix: Reduce the number of PV modules in series.

Inverter48 codes

10 Critical 32 Fault 6 Warning

About the Felicity T-REX-10KLP3G01

The Felicity T-REX-10KLP3G01 is a Inverter unit. The 48 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 voltage is too high.

Cause

PV input voltage exceeds inverter limits (too many PV modules in series).

Recommended fix

Reduce the number of PV modules in series.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F02Over current happen at PV port.Fault

Description

Over current happen at PV port.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F04Short circuit happen at PV port.Critical

Description

Short circuit happen at PV port.

Recommended fix

Check if wiring is connect well.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F07Battery voltage is too high.Fault

Description

Battery voltage is too high.

Cause

Battery specification or quantity does not meet requirements.

Recommended fix

Check if spec and quantity of batteries are meet requirements.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F08Over current happen at Battery.Fault

Description

Over current happen at Battery.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F11Over current happen at Buckboost.Fault

Description

Over current happen at Buckboost.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F13Buckboost soft start failed.Fault

Description

Buckboost soft start failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F15Buckboost current sensor failed.Fault

Description

Buckboost current sensor failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

F17Overload time out.Fault

Description

Overload time out.

Cause

Connected load is too high.

Recommended fix

Reduce the connected load by switching off some equipment.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F18The output overcurrent is abnormal.Fault

Description

The output overcurrent is abnormal.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F19Output short circuited.Critical

Description

Output short circuited.

Cause

Wiring fault or abnormal load on the output.

Recommended fix

Check if wiring is connected well and remove abnormal load.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F21OP current sensor failed.Fault

Description

Output current sensor failed.

Cause

Output current sensor failed.

Recommended fix

Output current sensor failed.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F22Output voltage is too low.Fault

Description

Output voltage is too low.

Cause

Connected load is too high.

Recommended fix

Reduce the connected load.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F23Output voltage is too high.Fault

Description

Output voltage is too high.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F24Over current or surge detected by Software.Fault

Description

Over current or surge detected by Software.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F25Hardware detect over current at inverter port.Fault

Description

Hardware detect over current at inverter port.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F26Invert soft start failed.Critical

Description

Inverter soft start failed.

Cause

Internal components failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F28The DC component of the inverter current is abnormal.Fault

Description

The DC component of the inverter current is abnormal.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F29Inverter current sensor failed.Fault

Description

Inverter current sensor failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F30Bus voltage is too low.Fault

Description

Bus voltage is too low.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F31Bus voltage is too high.Critical

Description

Bus voltage is too high.

Cause

AC Surge or internal components failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F32Bus voltage unbalance.Fault

Description

Bus voltage unbalance.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F33Bus soft start failed.Critical

Description

Bus soft start failed.

Cause

Internal components failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F34Over temperature happen at heat sink.Fault

Description

Over temperature happen at heat sink.

Cause

Ambient temperature is too high.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F35The inner temperature over.Fault

Description

The inner temperature is too high.

Cause

Ambient temperature is too high.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F38Leakage current fault.Critical

Description

Leakage current fault.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F39Leakage current sensor failed.Fault

Description

Leakage current sensor failed.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

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

Description

Isolation resistance to ground of the PV string is too low.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 28

F41Grounding errors.Critical

Description

Grounding errors.

Cause

Improper grounding.

Recommended fix

1. Confirm correct grounding. 2. Restart the unit, if the error persists, contact the repair center.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F42Relay check failure.Fault

Description

Relay check failure.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F43CAN data loss.Fault

Description

CAN data loss.

Cause

Communication cables not connected well.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F44Host data loss.Fault

Description

Host data loss.

Cause

Communication cables not connected well.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F45Synchronization data loss.Fault

Description

Synchronization data loss.

Cause

Communication cables not connected well.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

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

Description

The firmware version of each inverter is not the same.

Cause

Inverter firmware versions are mismatched across parallel units.

Recommended fix

1. Update all inverter firmware to the same version. 2. 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. 3. After updating, if the problem still remains, please contact your installer.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F47The inverter Settings are inconsistent.Fault

Description

The inverter Settings are inconsistent.

Cause

Parallel inverter settings differ between units.

Recommended fix

1. Through the LCD control button on the inverter, the parameters of the machine are set to the same as those of other machines. 2. if the problem persists, contact the after-sales service.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F48Parallel installation is abnormal.Fault

Description

Parallel installation is abnormal.

Recommended fix

Contact after-sales service for installation technical guidance.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F49Parallel negative power protection.Fault

Description

Parallel negative power protection.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

F50EEPROM failure.Critical

Description

EEPROM failure.

Recommended fix

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

Source:T-REX-10KLP3G01-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-10KLP3G01-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-10KLP3G01-Inverter-User-Guide.pdf · page 29

F87Battery input circuit failure.Critical

Description

Battery input circuit failure.

Recommended fix

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

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 29

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

Description

The number of battery packs in series has not been set.

Cause

The 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-10KLP3G01-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-10KLP3G01-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-10KLP3G01-Inverter-User-Guide.pdf · page 27

W51BMS doesn't allow inverter to discharge battery.Warning

Description

BMS does not allow the inverter to discharge battery; inverter will stop discharging battery automatically.

Cause

BMS doesn't allow inverter to discharge battery.

Recommended fix

Inverter will stop discharging battery automatically.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

W52BMS require inverter to charge battery.Warning

Description

BMS requires inverter to charge battery; inverter will charge battery automatically.

Cause

BMS require inverter to charge battery.

Recommended fix

Inverter will charge battery automatically.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

W60BMS firmware version is not matched.Warning

Description

BMS firmware version is not matched.

Cause

BMS firmware version is not matched.

Recommended fix

Upgrade the firmware of BMS.

Source:T-REX-10KLP3G01-Inverter-User-Guide.pdf · page 27

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

Description

The number of battery packs in series has not been set.

Cause

The 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-10KLP3G01-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-10KLP3G01 error codes

Where can I find the official Felicity T-REX-10KLP3G01 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-10KLP3G01 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-10KLP3G01?: 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.