你说的Diagnose灯是否为"ERR", 根据你提供的信息， 可能需要overreset:
手动总清，可如下操作，不妨一试，但必须注意程序备份：
With a manual reset, the complete data in both subunits is deleted.
To perform a manual reset, you should observe the following
Set both RUN/STOP switches to the STOP position
Set both ON/OFF switches to "0"
Remove batteries from both basic units
Set both ON/OFF switches to "I"
Insert the batteries in both basic units
Switch system to RUN mode