PROT-INV-EXT-SHORTCritical

Felicity battery error PROT-INV-EXT-SHORT

External Short Circuit protection

Critical — the battery shuts down and latches a protection fault. Don't keep restarting it — the cause needs checking first.

LPBA48100-OL

BatteryCritical

What it means

External Short Circuit protection — Listed under 7.1 Battery System Features as part of the inverter-interface protection set: protects against external short circuits on the inverter/output side.

Cause: A short circuit on the inverter/output side — in the DC cabling or the connected equipment — pulled a fault-level current, tripping the external short-circuit protection.

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: felicity-5.1-kwh-user-manual.pdf, p.4

Frequently asked questions

What does error PROT-INV-EXT-SHORT mean on a Felicity battery?
PROT-INV-EXT-SHORT means: External Short Circuit protection. A short circuit on the inverter/output side — in the DC cabling or the connected equipment — pulled a fault-level current, tripping the external short-circuit protection.
Is error PROT-INV-EXT-SHORT a fault or a warning?
PROT-INV-EXT-SHORT is a fault code: the battery enters protection and stops normal operation until it is cleared.
How do I clear or fix error PROT-INV-EXT-SHORT?
Power down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Related error codes

Other codes on the LPBA48100-OL

All LPBA48100-OL 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.