Proteco Q60A n2 error code

[Horace]

Hi Following a major storm of wind and rain which resulted in a power supply failure my Aster gates have failed to function and go from -- (stand by ) to error code n2 when activated. There was no evidence of water ingress into the control housing and although the earth trip triggered it has reset without problem.
If I reset the parameters to P5 (only one motor) and then successively plug in motor 1 then motor 2,into motor 1 terminals 13,14,15 they both work normally suggesting the motors themselves are OK and the problem lies in the control panel. Both motor fuses are OK.

Any advice welcome