Can I clear the F46 code myself?

It depends on the severity. Warning-level codes can usually be cleared by following the recommended fix. Fault and critical codes often require checking the source condition first; if the code returns immediately after restart, escalate to authorized service.

Is the F46 fix the same on every device?

The cause is consistent — it's the same protection logic. The exact fix wording can differ per device because each official manual addresses model-specific context (input ranges, parallel-config notes, firmware revisions). Use the per-device section that matches your unit.

Where does this information come from?

Every entry is sourced directly from the official Felicity user manual for the affected device. The "Source" line at the bottom of each device's section shows the manual filename and page number.

Fault

F46

Q: What does F46 mean on IVEM 6048?

Fault: AC output mode setting is different. Cause: Inconsistent AC output mode (program 28) settings across paralleled inverters. Recommended fix: 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.

Q: What does F46 mean on IVEM8048-II?

Fault: AC output mode setting is different. Cause: AC output mode setting (LCD program 28) does not match across parallel units. Recommended fix: 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.

Q: What does F46 mean on IVEM8048-LV?

AC output mode setting is different. Cause: Inconsistent AC output mode (program 28) settings across inverters. Recommended fix: 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.

Inconsistency in parallel versions.

7 Devices that report this code

What does the F46 error code mean?

F46 on a Felicity unit indicates: Inconsistency in parallel versions.. It is a fault-severity event that can appear on 7 different devices in the Felicity catalog. The same code may have slightly different recommended fixes depending on the device — the per-device sections below show the exact wording from each device's official manual.

This is a fault-severity code

Fault codes stop normal operation but the unit may attempt to recover. Common causes are out-of-range conditions (voltage, current, temperature) that require checking inputs and outputs before restart.

What triggers this code

F46 is triggered when the unit's protection or monitoring logic detects the specific condition described above. The exact trigger depends on the device — see the per-device sections for the official manual entry for each.

Apollo-5KLP1G01-MXEnergy storage system↗ view on device

F46Inconsistency in parallel versions.Fault

Description

Inconsistency in firmware versions across paralleled inverters.

Cause

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:Apollo-5KLP1G01-All-in-one-ESS-User-Guide.pdf · page 44

IVEM 6048Inverter↗ view on device

F46AC output mode setting is different.Fault

Description

Fault: AC output mode setting is different.

Cause

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

Recommended fix

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 · page 39

IVEM8048-IIInverter↗ view on device

F46AC output mode setting is different.Fault

Description

Fault: AC output mode setting is different.

Cause

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

Recommended fix

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 · page 45

IVEM8048-LVInverter↗ view on device

F46AC output mode setting is different.Fault

Description

AC output mode setting is different.

Cause

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

Recommended fix

Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39

T-REX-10KHP3G01Inverter↗ view on device

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

T-REX-10KLP3G01Inverter↗ view on device

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

T-REX-50KHP3G01Inverter↗ view on device

F46Inverter software overcurrent fault.Fault

Description

Inverter current is too high, check the given power and load size.

Source:T-REX-50KHP3G01-user-manual-.pdf · page 47

Frequently asked about F46

What is the F46 error on Felicity?: F46 on a Felicity unit means: Inconsistency in parallel versions.. It can appear on 7 different devices in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the F46 code myself?: It depends on the severity. Warning-level codes can usually be cleared by following the recommended fix. Fault and critical codes often require checking the source condition first; if the code returns immediately after restart, escalate to authorized service.
Is the F46 fix the same on every device?: The cause is consistent — it's the same protection logic. The exact fix wording can differ per device because each official manual addresses model-specific context (input ranges, parallel-config notes, firmware revisions). Use the per-device section that matches your unit.
Where does this information come from?: Every entry is sourced directly from the official Felicity user manual for the affected device. The "Source" line at the bottom of each device's section shows the manual filename and page number.

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