can anyone shed any light on this for me,i have two hitachi cass model RCi-3HZ and RCi-3HZ outdoors working of one remote as a maters and slave that so iam told work "every now and then" i keep getting an 03 fault comms checked the norm wiring ect but cant even run them one to one as serperate uint so kinda cant see two indoor/outsdoors pcb's being down as the fault suggests any veiws?? have a new remote coming from a mate(god bless his van its a gold mine of old kit)

paul