A2 card is the lift frequency convertor.

There should be a green led on top of it, what colour boxes have you got?

White or the later grey / black ones?

Also check the multi plug electrical connection to A2.

Swop it with the A1 card & see if the fault then moves to the traction side of the truck.

Its extremely rare for a frequency convertor to go down on a Reflex, I've only seen one fail in 8 years plus another one that the apprentice blew up changing the maxi fuse - he dropped his spanner across all 5 terminal studs & the capacitors discharged with an almighty flash & BANG.