Carrier 19XRV Specifications download pdf (Page 112)

112

Table 17 — ICVC Primary and Secondary Messages and

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)

K. ISM ALARMS

*[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

200 PROTECTIVE LIMIT

1M CONTACT FAULT 200->1M Aux Contact Fault; Check 1M

Contactor and Aux

1M aux contact is open when it should be closed

during start or run mode. Confirm starter 1M aux

contact closes when ISM 1CR contact closes and

terminal J9-2 is energized with 115V. Check wiring

leading to ISM J2-9 and J2-10. Check MOTOR

RATED LOAD AMPS in ISM_CONF screen. Wye-

Delta Starters: Check for failed or incomplete tran-

sition. Check S-2M mechanical interlock operation.

201 PROTECTIVE LIMIT

2M CONTACT FAULT 201->2M Aux Contact Fault; Check 2M

Contactor and Aux

2M aux contact closure was delayed after 1M has

closed. Confirm starter 2M aux contact closes fol-

lowing the 1M aux contact closure and the starter

energizes the motor. Check wiring leading to ISM

J2-11 and J2-12. Check MOTOR RATED LOAD

AMPS and confirm that the correct STARTER

TYPE has been selected in the ISM_CONF

screen. Wye Delta Starters Only: Check wiring

from ISM J9-4 to transition contactor.

202 PROTECTIVE LIMIT

MOTOR AMPS NOT SENSED 202->Motor Amps Not Sensed — Aver-

age Line Current [VALUE]

The ISM has not sensed sufficient current for an

excessive delay after 1M has closed. Check the

MOTOR CURRENT CT RATIO and the MOTOR

RATED LOAD AMPS in the ISM_CONF screen.

Check VFD OPTION in SETUP 2 screen. Check

for wiring of current transformers to the J4 ISM ter-

minals. Check if main circuit breaker has tripped.

Check ISM_HIST screen

203 FAILURE TO START

EXCESS ACCELERATION TIME 203->Motor Acceleration Fault - Average

Line Current [VALUE]

Any line current remains high for an excessive time

duration following 1M aux and either 2M aux or

transition contact closure. Check that inlet guide

vanes are fully closed at start up. Check

ISM_HIST screen.

Check Motor Rated Load Amps in ISM_CONF

screen. Reduce condenser pressure if possible.

204 FAILURE TO STOP

1M/2M CONTACT FAULT 204->1M/2M Aux Contact Stop Fault;

Check 1M/2M Contactors and Aux

The 1M aux or 2M aux contacts are closed during

power up or the 1M aux or 2M aux contacts remain

closed for an excessive delay following a STOP

command. Check wiring and dry contacts leading

to ISM J2-9 and J2-10 and J2-11 and J2-12.

205 FAILURE TO STOP

MOTOR AMPS WHEN

STOPPED

205->Motor Amps When Stopped -

Average Line Current [VALUE]

High line current measured on any phase after

power up or STOP command. Check the MOTOR

CURRENT CT RATIO and the MOTOR RATED

LOAD AMPS in the ISM_CONF screen. Check

VFD OPTION in SETUP 2 screen. Check

ISM_HIST screen. Check for high inrush current

during power-up. Confirm that the starter de-ener-

gizes the motor when the ISM removes 115V from

ISM J9-2. Confirm that the correct STARTER

TYPE has been selected in the ISM_CONF

screen.

206 PROTECTIVE LIMIT

STARTER FAULT 206->Starter Fault Cutout; Check

Optional Starter Contacts

The ISM has received a start command and the

starter has declared a Fault. The dry contacts con-

nected to ISM J2-7 and J2-8 are open. See starter

display for starter Fault Code. For Benshaw Inc.

RediStart starters, view RediStart MICRO display.

For VFD, check VFD display Fault History. Clear

VFD faults with VFD keypad. For Allen-Bradley

wye delta starters with RLA >

718 A, the TR3 timer

may have expired as a result of a delayed transi-

tion.

207 PROTECTIVE LIMIT

HIGH CONDENSER PRESSURE 207->High Cond Pressure Cutout.

[VALUE] exceeded limit of [LIMIT]*

Check Compressor Discharge High Pressure

switch wiring and accuracy. Check for high con-

denser water temperatures, low water flow, fouled

tubes. Check for division plate/gasket bypass.

Check for noncondensables in refrigerant. If

[Value] is less that [Limit], the 1M aux contact was

open for an excessive time following a start com-

mand. Check High Pressure Relay contacts and

115 V wiring leading to ISM J9-1. Verify that 115

VAC is present on J9-1 with oil pump on. Check

115 V wiring leading from ISM J9-2 to the 1M aux

coil and base. Check for 115 VAC at 1M coil during

a startup attempt. Check the 24V circuit leading

from power panel terminal 50 to the 2C aux con-

tact and High Pressure Switch. Check the 24V cir-

cuit leading from power panel terminals 17 and 43

leading to the High Pressure Relay coil and base.

208 PROTECTIVE LIMIT

EXCESSIVE MOTOR AMPS 208->Average Line Current [VALUE]

exceeded limit of [LIMIT]*.

AVERAGE LINE CURRENT > 110% for an exces-

sive amount of time. Check MOTOR RATED LOAD

AMPS and MOTOR CURRENT CT RATIO in

ISM_CONF time. Check ISM_HIST screen. Check

for conditions that cause excessive lift. Check

guide vane actuator for proper operation. Confirm

that guide vanes will fully close prior to start-up.

1 2 ... 107 108 109 110 111 112 113 114 115 116 117 ... 205 206

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