What does the PROT-INV-OVERVOLT error code mean?
PROT-INV-OVERVOLT on a Felicity unit indicates: Inverter interface Over Voltage protection.. It is a fault-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.