What does the PROT_INV_OVERVOLTAGE error code mean?
PROT_INV_OVERVOLTAGE on a Felicity unit indicates: Inverter Interface Over Voltage Protection.. 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.