SolaX
IE 111

Arc Hardware Fault (X3)

AFCI hardware fault. No field fix.

Common causes
AFCI module hardware failure
What to check
STEP 1
Record inverter SN and firmware version from the About menu.
Escalate if
Always -- AFCI hardware fault
Need full interactive diagnosis?
Faultpath walks you through decision trees, fault codes, and commissioning — built for solar & battery engineers.
Open Faultpath

More SolaX fault codes

SPI Fault
SPI Comms Fault
SCI Fault
SCI Comms Fault
CAN1 Fault
CAN Bus Comms Fault
PV Config. Fault
PV Array Config Error
Inv. EEPROM
Internal Memory Failure (IE 26)
Faultpath — Solar & Battery Field Intelligence for Engineers