If this is happening at any floor, I'd check the following;
Make sure the door close limit is breaking (snapping open) at full close
Check relay CL. Actually, good idea to walk in with a couple good relays, just replace it. 110VDC 4 pole. If you've got an ERM, chances are most relays are original, and the job is just about worn out.
Pull those plastic ice cube covers off and gently tug on each white shunt wire. You just might find a broken one right at the solder joint.
I think (that's think) the relay SE pilots the bigger relays OAC/ODC