What does the F.AL fault code mean and how do I fix it?

The F.AL fault occurs when the Assertion Level switch (ALsw) physical position does not match the P120 parameter setting, provided that P100 or any digital input (P121–P124) is set to a value other than 0. To resolve this fault, ensure both the Assertion Level switch and P120 are set to the same value — either both High (+) or both Low (–). If wiring with dry contacts or PNP solid state switches, set both to High; for NPN devices, set both to Low. (Page 22)