Table 12 Ð LID Primary and Secondary Messages and Custom Alarm/Alert Messages

with Troubleshooting Guides (cont)

G. START-UP FAILURES: This is an alarm condition. A manual reset is required to clear.

PRIMARY MESSAGE

SECONDARY MESSAGE

 

 

 

 

 

 

ALARM MESSAGE/PRIMARY CAUSE

ADDITIONAL CAUSE/REMEDY

FAILURE TO START

LOW OIL PRESSURE

OILPD [VALUE] exceeded limit of [LIMIT]*. Check

Check for closed oil supply valves. Check oil ®lter.

 

 

oil pump system.

Check for low oil temperature. Check transducer

 

 

 

 

 

 

 

 

 

 

 

 

accuracy.

FAILURE TO START

OIL PRESS SENSOR FAULT

OILPD [VALUE] exceeded limit of [LIMIT]*. Check

Check for excessive refrigerant in oil sump. Run oil

 

 

oil pressure sensor.

pump manually for 5 minutes. Check calibration of

 

 

 

 

 

 

 

 

 

 

 

 

oil pressure differential ampli®er modules. Check wir-

 

 

 

 

 

 

 

 

 

 

 

 

ing. Replace transducers if necessary.

FAILURE TO START

LOW CHILLED WATER FLOW

EVFL Evap Flow Fault: Check water pump/¯ow

Check wiring to ¯ow switch. Check through CON-

 

 

switch.

TROL TEST for proper switch operation.

FAILURE TO START

LOW CONDENSER

CDFL Cond. Flow Fault: Check water pump/¯ow

Check wiring to ¯ow switch. Check through CON-

 

WATER FLOW

switch.

TROL TEST for proper switch operation.

FAILURE TO START

STARTER FAULT

STR

 

 

 

 

FLT Starter Fault: Check Starter for Fault

A starter protective device has faulted. Check starter

 

 

Source.

for ground fault, voltage trip, temperature trip, etc.

FAILURE TO START

STARTER OVERLOAD TRIP

STR

 

 

 

 

FLT Starter Overload Trip: Check amps

Reset overloads, check ICR relay before restarting

 

 

calibration/reset overload.

chiller.

FAILURE TO START

LINE VOLTAGE DROPOUT

V

 

 

 

P Single-Cycle Dropout Detected: Check volt-

Check voltage supply. Check transformers for sup-

 

 

age supply.

ply. Check with utility if voltage supply is erratic. Moni-

 

 

 

 

 

 

 

 

 

 

 

 

tor must be installed to con®rm consistent, single-

 

 

 

 

 

 

 

 

 

 

 

 

cycle dropouts. Check low oil pressure switch.

FAILURE TO START

HIGH CONDENSER

High Condenser Pressure [LIMIT]:* Check switch

Check for proper design condenser ¯ow and tem-

 

PRESSURE

2C aux, and water temperature/¯ow.

perature. Check condenser approach. Check 2C aux-

 

 

 

 

 

 

 

 

 

 

 

 

iliary contacts on oil sump starter. Check high pres-

 

 

 

 

 

 

 

 

 

 

 

 

sure switch.

FAILURE TO START

EXCESS ACCELERATION

CA

 

 

 

 

P Excess Acceleration: Check guide vane clo-

Check that guide vanes are closed at start-up. Check

 

TIME

sure at start-up.

starter for proper operation. Reduce unit pressure

 

 

 

 

 

 

 

 

 

 

 

 

if possible.

FAILURE TO START

STARTER TRANSITION

RUN

 

 

 

AUX Starter Transition Fault: Check 1CR/

Check starter for proper operation.

 

FAULT

1M/Interlock mechanism.

Run contact failed to close.

FAILURE TO START

1CR AUX CONTACT FAULT

1CR

 

 

 

 

AUX Starter Contact Fault: Check 1CR/1M

Check starter for proper operation.

 

 

aux. contacts.

Start contact failed to close.

FAILURE TO START

MOTOR AMPS NOT SENSED

CA

 

 

P Motor Amps Not Sensed: Check motor load

Check for proper motor amps signal to SMM. Check

 

 

signal.

wiring from SMM to current transformer. Check main

 

 

 

 

 

 

 

 

 

 

 

 

motor circuit breaker for trip.

FAILURE TO START

CHECK REFRIGERANT TYPE

Current Refrigerant Properties Abnormal Ð Check

Pressures at transducers indicate another refriger-

 

 

Selection of refrigerant type.

ant type in control test. Make sure to access the AT-

 

 

 

 

 

 

 

 

 

 

 

 

TACH TO NETWORK DEVICE screen after speci-

 

 

 

 

 

 

 

 

 

 

 

 

fying HFC-134a refrigerant type.

FAILURE TO START

LOW OIL PRESSURE

Low Oil Pressure [LIMIT]:* Check oil pressure switch/

The oil pressure differential switch is open when the

 

 

pump and 2C aux.

compressor tried to start. Check the switch for proper

 

 

 

 

 

 

 

 

 

 

 

 

operation. Also, check the oil pump interlock (2C aux)

 

 

 

 

 

 

 

 

 

 

 

 

in the power panel and the high condenser pres-

 

 

 

 

 

 

 

 

 

 

 

 

sure switch.

FAILURE TO START

LOW GEAR OIL PRESSURE

GEAROILP [VALUE] exceeded limit of [LIMIT].*

Check for closed oil supply valves. Check oil ®lter.

 

 

Check gear oil pump/®lter.

Check transducer accuracy.

FAILURE TO START

GEAR OIL PRESSURE SENSOR

Gear Oil Pressure Transducer Out of Range [VALUE].

Check calibration of transducer. Replace if

 

 

 

 

 

 

 

 

 

 

 

 

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

*[LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point prede®ned 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.

H. COMPRESSOR JUMPSTART AND REFRIGERANT PROTECTION

PRIMARY MESSAGE

SECONDARY MESSAGE

ALARM MESSAGE/PRIMARY CAUSE

ADDITIONAL CAUSE/REMEDY

UNAUTHORIZED

UNIT SHOULD BE

CA

 

 

 

P Emergency: Compressor

Compressor is running with more than 10% RLA

OPERATION

STOPPED

running without control authorization.

and control is trying to shut it down. Turn power

 

 

 

 

 

 

 

 

 

off to compressor if unable to stop. Determine cause

 

 

 

 

 

 

 

 

 

before re-powering.

POTENTIAL FREEZE-UP

EVAP PRESS/TEMP

ERT Emergency: Freeze-up

Determine cause. If pumping refrigerant out of

 

TOO LOW

prevention.

chiller, stop operation and go over pumpout

 

 

 

 

 

 

 

 

 

procedures.

FAILURE TO STOP

DISCONNECT POWER

RUN

 

 

 

AUX Emergency: DISCONNECT

Starter run and start contacts are energized while

 

 

POWER.

control tried to shut down. Disconnect power to

 

 

 

 

 

 

 

 

 

starter.

LOSS OF

WITH STARTER

Loss of Communication with Starter: Check

Check wiring from PSIO to SMM. Check SMM mod-

COMMUNICATION

 

chiller.

ule troubleshooting procedures.

STARTER CONTACT

ABNORMAL 1CR OR

1CR

 

 

AUX Starter Contact Fault: Check

Starter run and start contacts energized while chiller

FAULT

RUN AUX

1CR/1M aux. contacts.

was off. Disconnect power.

POTENTIAL FREEZE UP

COND PRESS/TEMP

CRT [VALUE] exceeded limit of [LIMIT]*

The condenser pressure transducer is reading a

 

TOO LOW

Emergency: Freeze-up prevention.

pressure that could freeze the water in the con-

 

 

 

 

 

 

 

 

 

denser tubes. Check for condenser refrigerant leaks,

 

 

 

 

 

 

 

 

 

bad transducers, or transferred refrigerant. Place

 

 

 

 

 

 

 

 

 

the unit in PUMPDOWN mode to eliminate the

 

 

 

 

 

 

 

 

 

alarm if vessel is evacuated.

*[LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point prede®ned 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.

88

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Carrier 17EX specifications Operation, Potential FREEZE-UP, Failure to Stop, Loss, Communication, Starter Contact, Fault

17EX specifications

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