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10 Replacement of the service PC board
In the case of replacing the PC board, also confirm the chapter “11 How to exchange main parts”.
1. Hydro unit
■Setting the DN code (MCC-1753)
In the memory of the Hydro unit Main PC board before replacement, the type and the capacity code of the model
have been stored at the factory, and the customer setup data have been stored after installation.
Set the DN code according to the “PC board replacement Procedure Manual” which included in the package of the
service PC board.
2. Outdoor unit
■Setting the jumper wires (MCC-1768, MCC-1675)
Since the service PC board is available for several models, cut the jumper wires according to the “PC board
replacement Procedure Manual” which included in the package of the service PC board.
If they are not cut correctly, a certain error code appears on the remote controller and the operation is disabled.
WARNING
Don't open the PC board cover before 1 minute after power has been turned off beacuse an electric shock may be occurred.
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