Control Modules; Red Led (Labeled As Stat); Notes On Module Operation; Chiller Control Module (Ccm) - Carrier AquaEdge 19XRV series Operation, Maintenance And Installation Manual

Control Modules

CAUTION
Turn controller power off before servicing controls. This
ensures safety and prevents damage to the controller.
The ICVC and CCM modules perform continuous diagnos-
tic evaluations of the hardware to determine its condition.
Proper operation of all modules is indicated by LEDs
(light-emitting diodes) located on the circuit board of the ICVC
and CCM.
There is one green LED located on the CCM board, and one
red LED located on the ICVC and CCM boards respectively.
RED LED (LABELED AS STAT) — If the red LED:
• Blinks continuously at a 2-second interval, the module is
operating properly
• Is lit continuously, there is most likely a hardware fault that
requires replacing the module
• Is off continuously, the power should be checked
• Blinks 3 times per second, a software error has been discov-
ered and the module must be replaced
If there is no input power, check the fuses and circuit breaker.
If the fuse is good, check for a shorted secondary of the trans-
former or, if power is present to the module, replace the module.
GREED LED (LABELED AS COM) — These LEDs indi-
cate the communication status between different parts of the
controller and the network modules and should blink continu-
ously.

Notes on Module Operation

1. The chiller operator monitors and modifies configura-
tions in the microprocessor by using the 4 softkeys and
CONTRAST
ADJUSTMENT
BACK OF ICVC
MODULE PART NUMBER
SOFTWARE PART NUMBER
ICVC
J7 SIO J1 POWER/ J8 SERVICE
CCN
Fig. 55 — Rear of ICVC (International Chiller Visual Controller)
the ICVC. Communications between the ICVC and the
CCM is accomplished through the SIO (Sensor Input/
Output) bus, which is a phone cable. The communication
between the CCM and VFD is accomplished through the
sensor bus, which is a 3-wire cable.
2. If a green LED is on continuously, check the communica-
tion wiring. If a green LED is off, check the red LED
operation. If the red LED is normal, check the module
address switches (SW1). See Fig. 55 and 56. Confirm all
switches are in OFF position.
All system operating intelligence resides in the ICVC.
Some safety shutdown logic resides in the Gateway in
case communications are lost between the VFD and
ICVC. Outputs are controlled by the CCM and VFD as
well.
3. Power is supplied to the modules within the control panel
via the 24-vac T1 and T2 transformers. The transformers
are located within the power panel.
In the power panel, T1 supplies power to the compressor
oil heater, and optional hot gas bypass, and T2 supplies
power to both the ICVC and CCM.
T3 provides 24-v power to the optional DataPort™ or
DataLINK™ modules.
Power is connected to Plug J1 on each module.
Chiller Control Module (CCM) (Fig. 56)
INPUTS — Each input channel has 2 or 3 terminals. Refer to
individual chiller wiring diagrams for the correct terminal
numbers for a specific application.
OUTPUTS — Output is 24 vac. There are 2 terminals per
output. Refer to the chiller wiring diagram for a specific
application for the correct terminal numbers.
CCN INTERFACE
CONNECTION
113
DATALINK OR
DATAPORT MODULE (OPTION)
SW1
a19-1633