Hitachi OH Fin fault code meaning
Hitachi / OH Fin
Series: HFC-VWS
Fin overheat temperature rise
AC drive
Meaning: Heat-sink temperature sensing: displayed when the fan-cooled heat sink becomes abnormally warm (failed cooling fan or air-flow obstruction). | Replace the cooling fan; do not block the inlet and outlet; reduce the ambient temperature.
Possible causes
Source: Hitachi HFC-VWS Instruction Manual P52