46Fault

Felicity inverter error 46 (F46)

AC output mode setting is different

Also displayed as F46 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

AC output mode setting is different — The AC output mode (LCD setting #28) is not set consistently across the parallel system.

Cause: LCD program #28 is set to different output modes on the paralleled inverters.

How to fix it

  1. Switch off the inverter and check LCD setting #28.
  2. For a parallel system in single phase, make sure no 3P1, 3P2, 3P3, 2P1 or 2P2 is set on #28.
  3. For supporting three-phase systems, make sure no PAL, 2P1 or 2P2 is set on #28.
  4. For supporting split-phase systems, make sure no PAL, 3P1, 3P2 or 3P3 is set on #28.
  5. If the problem remains, contact your installer.

Source: IVPS3524P1G1-LV IVPS5048P1G1-LV IVPS7548P2G1 IVPS10048P2G1 User Guide - EN.pdf, p.25

T-REX-3KLP1G01

InverterFault

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

What it means

Inconsistency in parallel versions

Cause: The paralleled inverters are running different firmware versions; every unit on the link must match before the group will run.

How to fix it

  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, p.39

IVEM 6048

InverterFault

Also applies to:IVEM6048

What it means

AC output mode setting is different

Cause: Inconsistent AC output mode (program 28) settings across paralleled inverters.

How to fix it

  1. Switch off the inverter and check LCD setting program 28
  2. For parallel system in single phase, make sure no 3P1, 3P2 or 3P3 is set on program 28. For supporting three-phase system, make sure no "PAL" is set on program 28
  3. If the problem remains, please contact your installer.

Source: felicitysolar IVEM 6048 Solar Inverter User Guide.pdf, p.39

IVEM8048-II

InverterFault

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

What it means

AC output mode setting is different

Cause: AC output mode setting (LCD program 28) does not match across parallel units.

How to fix it

  1. Switch off the inverter and check LCD setting program 28
  2. For parallel system in single phase, make sure no 3P1, 3P2 or 3P3 is set on program 28. For supporting three-phase system, make sure no 'PAL' is set on program 28
  3. If the problem remains, please contact your installer.

Source: IVEM8K-12K-II_compressed.pdf, p.45

IVEM8048-LV

InverterFault

Also applies to:IVEM8048

What it means

AC output mode setting is different

Cause: Inconsistent AC output mode (program 28) settings across inverters.

How to fix it

  1. Switch off the inverter and check LCD setting program 28
  2. For parallel system in single phase, make sure no 3P1, 3P2 or 3P3 is set on program 28. For supporting three-phase system, make sure no "PAL" is set on program 28
  3. If the problem remains, please contact your installer.

Source: FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf, p.39

T-REX-10KHP3G01

InverterFault

What it means

The firmware version of each inverter is not the same — Inverters in parallel have different firmware versions.

Cause: Inverter firmware versions are mismatched across parallel units.

How to fix it

  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.
  3. If not, please contact your installer to provide the firmware to update.
  4. After updating, if the problem still remains, please contact your installer.

Source: T-REX-10KHP3G01-Inverter-User-Guide.pdf, p.29

T-REX-10KLP3G01

InverterFault

What it means

The firmware version of each inverter is not the same

Cause: Inverter firmware versions are mismatched across parallel units.

How to fix it

  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, p.29

T-REX-50KHP3G01

InverterFault

What it means

Inverter software overcurrent fault — Inverter current is too high, check the given power and load size.

Cause: The control firmware measured inverter output current above its protection limit — the commanded power or the connected load is beyond what the unit can deliver.

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.47

Apollo-5KLP1G01-MX

Energy storage systemFault

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

What it means

Inconsistency in parallel versions — Inconsistency in firmware versions across paralleled inverters.

Cause: Inconsistency in parallel versions.

How to fix it

  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: Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf, p.44

Frequently asked questions

What does error 46 mean on a Felicity inverter?
It depends on the model — 9 devices use code 46. On the IVPS3524P1G1-LV it means: AC output mode setting is different. The card for each model on this page gives its exact meaning and fix.
Is error 46 a fault or a warning?
46 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 46?
Switch off the inverter and check LCD setting #28. For a parallel system in single phase, make sure no 3P1, 3P2, 3P3, 2P1 or 2P2 is set on #28. 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 T-REX-3KLP1G01

All T-REX-3KLP1G01 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-10KHP3G01

All T-REX-10KHP3G01 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.