Where can I find the official Felicity T-REX-3KLP1G01 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-3KLP1G01 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-3KLP1G01?

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 01 mean on T-REX-3KLP1G01?

PV voltage is too high. Fix: Reduce the number of PV modules in series.

What does 02 mean on T-REX-3KLP1G01?

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

What does 04 mean on T-REX-3KLP1G01?

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

What does 07 mean on T-REX-3KLP1G01?

The battery voltage is too low, it should be charging. Fix: Check if spec and quantity of batteries are meet requirements.

What does 09 mean on T-REX-3KLP1G01?

Overload. Fix: Reduce the loads.

What does 11 mean on T-REX-3KLP1G01?

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

What does 14 mean on T-REX-3KLP1G01?

BuckBoost is out of balance. Fix: Restart the unit, if the error persists, contact the repair center.

What does 15 mean on T-REX-3KLP1G01?

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

What does 16 mean on T-REX-3KLP1G01?

NO.2 Buckboost current sensor failed. Fix: Restart the unit, if the error persists, contact the repair center.

What does 17 mean on T-REX-3KLP1G01?

Overload time out. Fix: Reduce the connected load by switching off some equipment.

What does 19 mean on T-REX-3KLP1G01?

Output short circuited. Fix: Check if wiring is connected well and remove abnormal load.

What does 20 mean on T-REX-3KLP1G01?

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

What does 21 mean on T-REX-3KLP1G01?

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

What does 22 mean on T-REX-3KLP1G01?

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

What does 23 mean on T-REX-3KLP1G01?

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

What does 24 mean on T-REX-3KLP1G01?

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

What does 25 mean on T-REX-3KLP1G01?

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

What does 26 mean on T-REX-3KLP1G01?

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

What does 28 mean on T-REX-3KLP1G01?

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

What does 29 mean on T-REX-3KLP1G01?

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

What does 30 mean on T-REX-3KLP1G01?

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

What does 31 mean on T-REX-3KLP1G01?

AC Surge or internal components failed. Bus voltage is too high. Fix: Restart the unit, if the error persists, contact the repair center.

What does 33 mean on T-REX-3KLP1G01?

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

What does 34 mean on T-REX-3KLP1G01?

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

What does 35 mean on T-REX-3KLP1G01?

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

What does 36 mean on T-REX-3KLP1G01?

Internal fan locking fault. Fix: Restart the unit, if the error persists, contact the repair center.

What does 38 mean on T-REX-3KLP1G01?

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

What does 39 mean on T-REX-3KLP1G01?

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

What does 40 mean on T-REX-3KLP1G01?

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 47 mean on T-REX-3KLP1G01?

Inconsistent parallel settings. Fix: Single-phase parallel system and group three-phase system setup error.

What does 48 mean on T-REX-3KLP1G01?

Failure of the parallel system as a whole. Fix: Specific faults in other machines in the parallel system.

What does 49 mean on T-REX-3KLP1G01?

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

What does 51 mean on T-REX-3KLP1G01?

BMS doesn't allow inverter to discharge battery. Fix: Restart the unit, if the error persists, contact the repair center.

What does 52 mean on T-REX-3KLP1G01?

BMS require inverter to charge battery. Fix: Restart the unit, if the error persists, contact the repair center.

What does 54 mean on T-REX-3KLP1G01?

Temperature sensor disconnected. Fix: Restart the unit, if the error persists, contact the repair center.

What does 60 mean on T-REX-3KLP1G01?

BMS firmware version is not matched. Fix: Upgrade the firmware of BMS.

What does 87 mean on T-REX-3KLP1G01?

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

What does b50 mean on T-REX-3KLP1G01?

BMS doesn't allow inverter to charge battery (LCD information code shown during BMS communication). Fix: Informational; inverter follows BMS instruction.

T-REX-3KLP1G01

Q: What does 06 mean on T-REX-3KLP1G01?

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

Q: What does 10 mean on T-REX-3KLP1G01?

Abnormal LLC. Fix: Restart the unit, if the error persists, contact the repair center.

Inverter47 codes

also coversT-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01

47 Fault

About the Felicity T-REX-3KLP1G01

The Felicity T-REX-3KLP1G01 is a Inverter unit covered by a shared firmware family that includes 6 variants. The error codes listed below apply to every variant in this family — T-REX-3KLP1G01, T-REX-3K6LP1G01, T-REX-4KLP1G01, T-REX-4K6LP1G01 and 2 others. If your unit's exact model number isn't shown in the title but is listed in the "also covers" tags, this is the correct reference page.

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.

01PV voltage is too high.Fault

Description

PV voltage is too high.

Recommended fix

Reduce the number of PV modules in series.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

02Over 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

04Short circuit happen at PV port.Fault

Description

Short circuit happen at PV port.

Recommended fix

Check if wiring is connect well.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

06PV current sensor failed.Fault

Description

PV current sensor failed.

Recommended fix

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 · page 37

07Battery voltage is too high.Fault

Description

The battery voltage is too low, it should be charging.

Recommended fix

Check if spec and quantity of batteries are meet requirements.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

09Overload.Fault

Description

Overload.

Recommended fix

Reduce the loads.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

10Abnormal LLC.Fault

Description

Abnormal LLC.

Recommended fix

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 · page 37

11Over 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

14BuckBoost is out of balance.Fault

Description

BuckBoost is out of balance.

Recommended fix

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 · page 37

15Buckboost 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

16NO.2 Buckboost current sensor failed.Fault

Description

NO.2 Buckboost current sensor failed.

Recommended fix

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 · page 37

17Overload time out.Fault

Description

Overload time out.

Recommended fix

Reduce the connected load by switching off some equipment.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

19Output short circuited.Fault

Description

Output short circuited.

Recommended fix

Check if wiring is connected well and remove abnormal load.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

20Input output reverse.Fault

Description

Input output reverse.

Recommended fix

Confirm that the input and output wiring is correct.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

21OP current sensor failed.Fault

Description

Output current sensor failed.

Recommended fix

Output current sensor failed.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

22Output voltage is too low.Fault

Description

Output voltage is too low.

Recommended fix

Reduce the connected load.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

23Output 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

24Over 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

25Hardware 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

26Invert soft start failed.Fault

Description

Internal components failed. Invert soft start failed.

Recommended fix

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 · page 38

28The 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

29Inverter 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

30Bus 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

31Bus voltage is too high.Fault

Description

AC Surge or internal components failed. Bus voltage is too high.

Recommended fix

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 · page 38

33Bus soft start failed.Fault

Description

Internal components failed. Bus soft start failed.

Recommended fix

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 · page 38

34Over temperature happen at heat sink.Fault

Description

Over temperature happen at heat sink.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

35The inner temperature over.Fault

Description

The inner temperature over.

Recommended fix

Check whether the ambient temperature is too high.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

36Internal fan locking fault.Fault

Description

Internal fan locking fault.

Recommended fix

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 · page 38

38Leakage current fault.Fault

Description

Leakage current fault.

Recommended fix

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 · page 38

39Leakage 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

40Isolation resistance to ground of the PV string is too low.Fault

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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 38

42Relay check failure.Fault

Description

Relay check failure.

Recommended fix

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 · page 38

43Parallel CAN COMM abnormality.Fault

Description

Parallel CAN COMM abnormality.

Recommended fix

Test the parallel communication line, restart still have problems please contact the after-sales service.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

44Loss of parallel hosts.Fault

Description

Loss of parallel hosts.

Recommended fix

Test the parallel communication line, restart still have problems please contact the after-sales service.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

45Parallel Synchronisation Signal Abnormal.Fault

Description

Parallel Synchronisation Signal Abnormal.

Recommended fix

Test the parallel communication line, restart still have problems please contact the after-sales service.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

46Inconsistency in parallel versions.Fault

Description

Inconsistency in parallel versions.

Recommended fix

1. Update all inverter firmware to the same version. 2. Check the version of each inverter via the LCD settings to ensure that the CPU versions are the same. if it is not the same, please contact after-sales personnel to update the firmware. 3. After updating, if the problem still exists, please contact after-sales.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

47Inconsistent parallel settings.Fault

Description

Inconsistent parallel settings.

Recommended fix

Single-phase parallel system and group three-phase system setup error.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

48Failure of the parallel system as a whole.Fault

Description

Failure of the parallel system as a whole.

Recommended fix

Specific faults in other machines in the parallel system.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

49Parallel 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

50EEPROM failure.Fault

Description

EEPROM failure.

Recommended fix

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 · page 39

51BMS doesn't allow inverter to discharge battery.Fault

Description

BMS doesn't allow inverter to discharge battery.

Recommended fix

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 · page 37T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

52BMS require inverter to charge battery.Fault

Description

BMS require inverter to charge battery.

Recommended fix

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 · page 37T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

53PV parallel failure.Fault

Description

PV parallel 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

54Temperature sensor disconnected.Fault

Description

Temperature sensor disconnected.

Recommended fix

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 · page 39

60BMS firmware version is not matched.Fault

Description

BMS firmware version is not matched.

Recommended fix

Upgrade the firmware of BMS.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37

87Battery 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-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

b50BMS doesn't allow inverter to charge battery.Fault

Description

BMS doesn't allow inverter to charge battery (LCD information code shown during BMS communication).

Recommended fix

Informational; inverter follows BMS instruction.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 17

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-3KLP1G01 error codes

Where can I find the official Felicity T-REX-3KLP1G01 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-3KLP1G01 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-3KLP1G01?: 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.

Common codes on this device

Over current happen at Buckboost.

Short circuit happen at PV port.

PV current sensor failed.

Battery voltage is too high.

Abnormal LLC.

NO.2 Buckboost current sensor failed.

Overload time out.

PV voltage is too high.

Over current happen at PV port.

Overload.

BuckBoost is out of balance.

Buckboost current sensor failed.

Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.