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Terminal block connections are provided on the options modules. All sensor inputs are field
wired and installed. Options module 1 can be factory or field-installed. Options module 2 is
shipped separately and must be field installed. For installation, refer to the unit or field wiring
diagrams. Be sure to address the module for the proper module number (Figure 53) and to
configure the chiller for each feature being used.
Replacing Defective Processor Modules
The replacement part number is printed in a small label on front of the PSIO module. The
model and serial numbers are printed on the unit nameplate located on an exterior corner post.
The proper software is factory-installed by Carrier in the replacement module. When ordering a
replacement processor module (PSIO), specify complete replacement part number, full unit
model number, and serial number. This new unit requires reconfiguration to the original
machine data by the installer. Follow the procedures described in the Set Up Machine Control
Configuration section.
Click here for Figure 53 — Options Module
CAUTION
CAUTION
!
Electrical shock can cause personal injury. Disconnect all electrical power
before servicing.