Carrier 19XRV Specifications download pdf (Page 113)

113

Table 17 — ICVC Primary and Secondary Messages and

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)

K. ISM ALARMS (cont)

*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or alarm condition.

[VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped. "Exceeded Limit" in Alarm or Alert messages may mean the value is above or

below a threshold

ICVC

FAULT

STATE

PRIMARY MESSAGE SECONDARY MESSAGE PRIMARY CAUSE

ADDITIONAL

CAUSE/REMEDY

209 PROTECTIVE LIMIT

LINE PHASE LOSS 209->Line Phase Loss; Check ISM Fault

History to Identify Phase

Any LINE VOLTAGE < 50% MOTOR RATED LINE

VOLTAGE or there is an excessive difference

between the smallest LINE CURRENT and the

largest LINE CURRENT. Check the ISM_HIST

screen. Check MOTOR RATED LINE VOLTAGE in

ISM_CONF screen. Check phase to phase and

phase to ground power distribution bus voltage.

Check current transformer wiring leading to ISM

terminal block J4 and line voltage wiring leading to

ISM terminal block J3. Check wiring and hardware

between building power supply and motor. Current

imbalance may improve if power or motor leads

are rotated in the same phase sequence. Consult

power company. Medium voltage applications

only: Check voltage potential transformers and

VOLT TRANSFORMER RATIO in ISM_CONF

screen.

210 PROTECTIVE LIMIT

LINE VOLTAGE DROPOUT 210->Single Cycle Line Voltage Dropout Temporary loss of voltage. SINGLE CYCLE

DROPOUT in the ISM_CONF screen is Enabled

and two LINE VOLTAGES < 50% MOTOR RATED

LINE VOLTAGE. Check ISM_HIST screen. Disable

Single Cycle Dropout in ISM_CONF screen.

211 PROTECTIVE LIMIT

HIGH LINE VOLTAGE 211->High Average Line Voltage

[VALUE]

High LINE VOLTAGE for an excessive amount of

time. Check LINE VOLTAGE in ISM_HIST screen.

Check MOTOR RATED LINE VOLTAGE and

OVERVOLTAGE THRESHOLD in ISM_CONF

screen. Check phase to phase and phase to

ground distribution bus voltage. Consult power

company. Medium voltage applications only:

Check voltage potential transformers and VOLT

TRANSFORMER RATIO in ISM_CONF screen.

Check wiring to ISM J3-VL1, J3-VL2 and J3-VL3.

212 PROTECTIVE LIMIT

LOW LINE VOLTAGE 212->Low Average Line Voltage

[VALUE]

Low LINE VOLTAGE for an excessive amount of

time. Check LINE VOLTAGE in ISM_HIST screen.

Check MOTOR RATED LINE VOLTAGE and

UNDERVOLTAGE THRESHOLD in ISM_CONF

screen. Check phase to phase and phase to

ground distribution bus voltage. Check connec-

tions to ISM terminal block J3. Consult power com-

pany. Medium voltage applications only: Check

voltage potential transformers and VOLT TRANS-

FORMER RATIO in ISM_CONF screen. Check

wiring to ISM J3-VL1, J3-VL2 and J3-VL3.

213 PROTECTIVE LIMIT

STARTER MODULE RESET 213->Starter Module Power-On Reset

When Running

AUTO RESTART OPTION in OPTIONS screen is

disabled and there was a temporary loss of 115 V

ISM control voltage supply. Check ISM_HIST

screen. Check wiring leading to ISM terminals J1-

LL1 and J1-LL2. Check control power circuit

breaker, control power transformer and control

power circuit fuses. Monitor chiller utility power for

disruptions. Improve ISM ground connection,

apply measures to reduce electrical noise to ISM.

Consult power company.

214 PROTECTIVE LIMIT

POWER LOSS 214->Control Power - Loss When Run-

ning

AUTO RESTART OPTION in OPTIONS screen is

disabled and there was a temporary loss of 24

VAC power to the ICVC. Check 115 VAC control

power transformer. Check 24 VAC T2 transformer

and wiring leading to ICVC terminals J1-4 and J1-

5 . Check CB1 circuit breaker in the control panel.

Check phase to phase and phase to ground distri-

bution bus voltage. Monitor chiller utility power for

disruptions. Consult power company.

215 PROTECTIVE LIMIT

LINE CURRENT IMBALANCE 215->Line Current Imbalance;Check

ISM Fault History to Identify Phase

Current imbalance > CURRENT % IMBALANCE

for greater than the CURRENT IMBALANCE

TIME. Check settings in ISM_CONF screen.

Check ISM_HIST screen. Check current trans-

former wiring leading to ISM terminal block J4.

Verify phase to phase and phase to ground line

voltage. Check wiring and hardware between

building power supply and motor. Current imbal-

ance may improve if power or motor leads are

rotated in the same phase sequence.

216 PROTECTIVE LIMIT

LINE VOLTAGE IMBALANCE 216->Line Voltage Imbalance; Check

ISM Fault History to Identify Phase.

Voltage Imbalance > VOLTAGE % IMBALANCE for

greater than the VOLTAGE IMBALANCE TIME.

Check settings in ISM_CONF screen. Check

ISM_HIST screen. Check line voltage wiring lead-

ing to ISM terminal block J3. Verify phase to phase

and phase to ground line voltage. Check wiring

and hardware between building power supply and

motor.

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Carrier 19XRV Specifications Page 113

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