Replacing defective processor modules – Carrier 19XL User Manual
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Terminal block connections are provided on the options modules. All sensor inputs are field
wired and installed. Options module number 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 (
) 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
section.
Click here for Figure 45 — Options Module
CAUTION
CAUTION
!
Electrical shock can cause personal injury. Disconnect all electrical power
before servicing.