Introduction
Purpose
This field service bulletin explains that the dip switches on the new control board must be set the same way as the
control board that is being replaced. If the dip switches on the new control board are not set correctly the system will
not function correctly.
228337 Kit contents
Part number Description Quantity
041993 PCB: HPR control board 1
DANGER
ELECTRICAL SHOCK CAN KILL
The line disconnect switch must be in the OFF position before making the power cable connections. In the U.S.,
use a “lock-out/tag-out” procedure until installation or repair is complete. In other countries, follow appropriate
national or local safety procedures. See the Safety Section of the system Manual for more safety
precautions.
Field Service Bulletin 1
HPR CONTROL BOARD REPLACEMENT