I'm having dramas with this Kleemann hydraulic, all safety circuits are good, but after running up roughly 1 or 2 floors, I get a 'safty' fault on the display.

The fault manual says the reason is;
Hardware fault on the LiSA-Card
OR
Safety relays do not work in the prescribed sequence or are defective.

The k7 k6 and k5 relays seem to look okay, k5 is not on at all however.

I'm still investigating this, but if anyone with a lot of experience on these could offer some tips, I'd be greatly appreciated.

Thanks guys