Critical

PROT_INV_REVERSE_POLARITY_GND

Reverse Polarity Ground Fault.

1 Devices that report this code

What does the PROT_INV_REVERSE_POLARITY_GND error code mean?

PROT_INV_REVERSE_POLARITY_GND on a Felicity unit indicates: Reverse Polarity Ground Fault.. It is a critical-severity event that can appear on 1 device 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 critical-severity code

Critical codes trip the unit offline immediately. They typically indicate hardware failure (short-circuit, IGBT, BMS) or an unsafe operating condition. Do not bypass the fault — note the code and contact authorized service.

What triggers this code

PROT_INV_REVERSE_POLARITY_GND 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.

LUX-X-96050HG01Battery↗ view on device
PROT_INV_REVERSE_POLARITY_GNDReverse Polarity Ground Fault.Critical
Description

Reverse polarity / ground fault detected on the inverter interface.

Cause

Battery (+) and (-) cables connected with reversed polarity to the inverter, or ground fault.

Recommended fix

Power off and verify polarity of DC cabling between battery and inverter; correct wiring before re-energising.

Source:LUX-X-96050HG01-Lithium-Battery-User-Guide.pdf · page 7

Frequently asked about PROT_INV_REVERSE_POLARITY_GND

What is the PROT_INV_REVERSE_POLARITY_GND error on Felicity?
PROT_INV_REVERSE_POLARITY_GND on a Felicity unit means: Reverse Polarity Ground Fault.. It can appear on 1 device in the Felicity catalog. The cause and recommended fix are listed for each device on this page.
Can I clear the PROT_INV_REVERSE_POLARITY_GND 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 PROT_INV_REVERSE_POLARITY_GND 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.