Replacing Defective Icvc Modules - Carrier AquaEdge 23XRV Start-Up, Operation And Maintenance Instructions Manual

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CONFIGURATION
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Replacing Defective ICVC Modules —
ule replacement part number is printed on a small label on the
rear of the ICVC module. The chiller model and serial num-
bers are printed on the chiller nameplate located on the right
side of the control center. The proper software is factory-
installed by Carrier in the replacement module. When ordering
a replacement international chiller visual controller (ICVC)
module, specify the complete replacement part number, full
chiller model number, and chiller serial number. The installer
must configure the new module to the original chiller data.
Follow the procedures described in the Software Configuration
section on page 75.
CAUTION
Electrical shock can cause personal injury. Disconnect all
electrical power before servicing.
INSTALLATION
1. Verify the existing ICVC module is defective by using the
procedure described in the Troubleshooting Guide sec-
tion, page 96, and the Control Modules section, on this
page. Do not select the ATTACH TO NETWORK
DEVICE table if the ICVC indicates a CCN communica-
tion failure. Doing so will probably lock up the ICVC
because it will not be able to communicate with the CCN.
2. Any communication wires from other chillers or CCN
modules should be disconnected prior to installation of a
new module to prevent the new ICVC from uploading
incorrect run hours into memory. Data regarding the
ICVC configuration should have been recorded and
saved. This data must be reconfigured into the new
ICVC. If this data is not available, follow the procedures
described in the Software Configuration section. If the
module to be replaced is functional, configurations may
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COMM THERMISTORS
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Fig. 61 — Chiller Control Module (CCM)
The mod-
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also be copied manually. The data sheets on pages CL-4
through CL-10 are provided for this purpose. Default
values are shown so that only deviations from these need
to be recorded.
If a CCN Building Supervisor or Service Tool is avail-
able, the module configuration should have already been
uploaded into memory. When the new module is
installed, the configuration can be downloaded from the
computer.
3. To install this module, record values for the TOTAL
COMPRESSOR STARTS, SERVICE ONTIME, and the
COMPRESSOR ONTIME from the MAINSTAT screen
on the ICVC.
4. Power off the controls.
5. Remove the old ICVC.
6. Install the new ICVC module. Turn the control power
back on.
7. The ICVC now automatically attaches to the local net-
work device.
8. Set the current time and date in the SERVICE / TIME
AND DATE screen. Set the CCN Bus and Address in the
SERVICE / ICVC CONFIGURATION screen. Press the
alarm RESET soft key (from the default screen). Upload
via Service Tool or manually reenter all non-default con-
figuration values. (Refer to pages CL-4 through CL-10).
If the correct VFD_CONF values are displayed when that
table is viewed, simply press EXIT then SAVE to reload
all of them. Using Service Tool or manually reenter
TOTAL COMPRESSOR STARTS, COMPRESSOR
ONTIME, and SERVICE ONTIME. If forced using
Service Tool, release the force on SERVICE ONTIME
after the desired value has been set. TOTAL COMPRES-
SOR STARTS and TOTAL COMPRESSOR ONTIME can
only be changed prior to the first completed start. If a start
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