Carrier 19XRV Specifications download pdf (Page 118)

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• is lit continuously, there is a problem that requires

replacing the module

• is off continuously, the power should be checked

• blinks 3 times per second, a software error has been dis-

covered and the module must be replaced

If there is no input power, check the fuses and circuit break-

er. If the fuse is good, check for a shorted secondary of the

transformer or, if power is present to the module, replace the

module.

GREEN LED (Labeled as COM) — These LEDs indicate

the communication status between different parts of the con-

troller and the network modules and should blink continuously.

Notes on Module Operation

1. The chiller operator monitors and modifies configura-

tions in the microprocessor by using the 4 softkeys and

the ICVC. Communications between the ICVC and the

CCM is accomplished through the SIO (Sensor Input/

Output) bus, which is a phone cable.

2. If a green LED is on continuously, check the communica-

tion wiring. If a green LED is off, check the red LED op-

eration. If the red LED is normal, check the module ad-

dress switches (SW1) (Fig. 52 and 53). Confirm all

switches are in OFF position.

All system operating intelligence resides in the ICVC.

Outputs are controlled by the CCM as well.

3. Power is supplied to the modules within the control panel

via 24-vac power sources.

The transformers are located within the power panels.

In the power panel, T1 supplies power to the compressor

oil heater, oil pump, and optional hot gas bypass, and T2

supplies power to both the ICVC and CCM.

T3 provides 24-v power to the optional modules.

Power is connected to Plug J1 on each module.

Chiller Control Module (CCM) (Fig. 53)

INPUTS — Each input channel has 2 or 3 terminals. Refer to

individual chiller wiring diagrams for the correct terminal

numbers for your application.

OUTPUTS — Output is 24 vac. There are 2 terminals per out-

put. Refer to the chiller wiring diagram for your specific appli-

cation for the correct terminal numbers.

Integrated Starter Module (Fig. 54)

INPUTS — Inputs on strips J3 through J6 are analog inputs

and J2 is discrete (on/off) input. The specific application of the

chiller determines which terminals are used. Refer to the indi-

vidual chiller wiring diagram for the correct terminal numbers

for your application.

OUTPUTS — Outputs are rated for 115-277 vac and wired to

strip J9. There are 2 terminals per output.

CCN INTERFACE

CONNECTION

SW1BACK OF CVC

MODULE PART NUMBER

SOFTWARE PART NUMBER

J7 SIO J1 POWER/

CCN

J8 SERVICE

ICVC

Fig. 52 — Rear of ICVC (International Chiller Visual Controller)

a19-1868

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Carrier 19XRV Specifications Page 118

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