I've been working for this schindler unit for a week already. my problem is the RLAB-A "out of service" relay is activated causing the elevator not to operate even in inspection mode. I've already check all the wiring coming from the relay and seems that all are in good condition.I checked the error log for the Main board display and here are some of the errors Error MCR 713 "Current Diff", Perm Drive 11 " FC Block" and Error Drive 83 "No Supply 24v".

Anyone could give me a tips.

Thanks