Is error PROT-BAT-OVERTEMP a fault or a warning?

PROT-BAT-OVERTEMP is a fault code: the battery enters protection and stops normal operation until it is cleared.

How do I clear or fix error PROT-BAT-OVERTEMP?

Power down the inverter and let it cool. Inspect cooling vents and fan inlets for dust, leaves, or insect nests — clean with compressed air.

PROT-BAT-OVERTEMP

Felicity battery error PROT-BAT-OVERTEMP

Battery Over Temperature protection

Fault — the battery enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.

LPBA48100-OL

BatteryFault

What it means

Battery Over Temperature protection — Listed under 7.1 Battery System Features 'Battery Protection': protects against over-temperature at the battery side (working temp -10 to +50 C per spec).

Cause: Inverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.

How to fix it

Power down the inverter and let it cool.
Inspect cooling vents and fan inlets for dust, leaves, or insect nests — clean with compressed air.
Confirm the inverter is installed in a shaded, ventilated location with the manufacturer's required clearances on all sides.
If the fan does not spin on restart, fan replacement is required.

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

Frequently asked questions

What does error PROT-BAT-OVERTEMP mean on a Felicity battery?: PROT-BAT-OVERTEMP means: Battery Over Temperature protection. Inverter internal temperature has exceeded the safe operating threshold. Causes include high ambient temperature, blocked cooling vents, failed cooling fan, or installation in direct sunlight.
Is error PROT-BAT-OVERTEMP a fault or a warning?: PROT-BAT-OVERTEMP is a fault code: the battery enters protection and stops normal operation until it is cleared.
How do I clear or fix error PROT-BAT-OVERTEMP?: Power down the inverter and let it cool. Inspect cooling vents and fan inlets for dust, leaves, or insect nests — clean with compressed air.

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.