60Fault

Felicity inverter error 60 (F60)

Current feedback into the inverter is detected

Also displayed as F60 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:

IVPS3524P1G1-LV

InverterFault

Also applies to:IVPS5048P1G1-LVIVPS7548P2G1IVPS10048P2G1IVPS3.5~10kVA-USIVPS3-5-10KVA

What it means

Current feedback into the inverter is detected — Power is feeding back into the inverter output.

Cause: L and N cables are connected reversely, or sharing cables are wired between inverters on different phases.

How to fix it

  1. Restart the inverter.
  2. Check if the L and N cables are not connected reversely in all inverters.
  3. For a parallel system in single phase, make sure the sharing cables are connected in all inverters; for three-phase or split-phase systems, make sure the sharing cables are connected in the inverters on the same phase and disconnected in the inverters on different phases.
  4. If the problem remains, contact your installer.

Source: IVPS3524P1G1-LV IVPS5048P1G1-LV IVPS7548P2G1 IVPS10048P2G1 User Guide - EN.pdf, p.26

IVGM5KL-P1G1

InverterFault

Also applies to:IVGM6KL-P1G1IVGM7K6L-P1G1IVGM8KL-P1G1

What it means

Gen Under Frequency Alarm — Generator frequency is too low, check whether the generator frequency is within the normal range.

Cause: The frequency measured at the generator input is below the permitted operating window, so the inverter alarms and will not qualify the generator until its frequency recovers.

How to fix it

Check generator output frequency.

Source: Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf, p.52

T-REX-3KLP1G01

InverterFault

Also applies to:T-REX-3K6LP1G01T-REX-4KLP1G01T-REX-4K6LP1G01T-REX-5KLP1G01T-REX-6KLP1G01

What it means

BMS firmware version is not matched

Cause: The BMS firmware version does not match what the inverter's protocol expects, so battery communication cannot run reliably until the BMS is updated.

How to fix it

Upgrade the firmware of BMS.

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

T-REX-50KHP3G01

InverterFault

What it means

Load overload 125% Fault — The load exceeds 125%, the load should be reduced.

Cause: The connected load has exceeded 125% of the inverter's rated output — a deeper overload tier that trips faster than the 110% level; the load must be reduced.

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.48

Frequently asked questions

What does error 60 mean on a Felicity inverter?
It depends on the model — 4 devices use code 60. On the IVPS3524P1G1-LV it means: Current feedback into the inverter is detected. The card for each model on this page gives its exact meaning and fix.
Is error 60 a fault or a warning?
60 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error 60?
Restart the inverter. Check if the L and N cables are not connected reversely in all inverters. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the IVPS3524P1G1-LV

All IVPS3524P1G1-LV codes

Other codes on the IVGM5KL-P1G1

All IVGM5KL-P1G1 codes

Other codes on the T-REX-3KLP1G01

All T-REX-3KLP1G01 codes

Other codes on the T-REX-50KHP3G01

All T-REX-50KHP3G01 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.