Specifications

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
with Troubleshooting Guides (cont)
E. NORMAL OR AUTO.-RESTART
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
STARTUP IN PROGRESS OCCUPIED MODE Machine starting. Time schedule is occupied.
STARTUP IN PROGRESS REMOTE CONTACT CLOSED Machine starting. Remote contacts are closed.
STARTUP IN PROGRESS START COMMAND IN EFFECT
Machine starting. Chiller START/STOP on Status01 manually forced
to start.
AUTORESTART IN PROGRESS OCCUPIED MODE Machine starting. Time schedule is occupied.
AUTORESTART IN PROGRESS REMOTE CONTACT CLOSED Machine starting. Remote contacts are closed.
AUTORESTART IN PROGRESS START COMMAND IN EFFECT
Machine starting. Chiller START/STOP on Status01 manually forced
to start.
F. 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
oil pump system.
Check for closed oil supply valves. Check oil filter.
Check for low oil temperature. Check transducer ac-
curacy.
FAILURE TO START OIL PRESS SENSOR FAULT OILPD [VALUE] exceeded limit of [LIMIT]*. Check
oil pressure sensor.
Check for excessive refrigerant in oil sump. Run oil
pump manually for 5 minutes. Check transducer cali-
bration. Check cooler pressure transducer calibra-
tion. Check wiring. Replace transducer if necessary.
FAILURE TO START LOW CHILLED WATER FLOW EVFL Evap Flow Fault: Check water pump/flow
switch.
Check wiring to flow switch. Check through Control
Test for proper switch operation.
FAILURE TO START LOW CONDENSER
WATER FLOW
CDFL Cond. Flow Fault: Check water pump/
flow switch.
Check wiring to flow switch. Check through Control
Test for proper switch operation.
FAILURE TO START STARTER FAULT STR FLT Starter Fault: Check Starter for Fault
Source.
Astarter protective device has faulted. Check starter
for ground fault, voltage trip, temperature trip, etc.
FAILURE TO START STARTER OVERLOAD TRIP STR FLT Starter Overload Trip: Check amps
calibration/reset overload.
Reset overloads before restart.
FAILURE TO START LINE VOLTAGE DROPOUT V P Single-Cycle Dropout Detected: Check volt-
age supply.
Check voltage supply. Check transformers for sup-
ply. Check with utility if voltage supply is erratic. Moni-
tor must be installed to confirm consistent, single-
cycle dropouts. Check low oil pressure switch. Check
under/over voltage fault relay.
FAILURE TO START HIGH CONDENSER
PRESSURE
High Condenser Pressure [LIMIT]: Check switch
2C aux, and water temperature/flow.
Check for proper design condenser flow and tem-
perature. Check condenser approach. Check 2C aux-
iliary contacts on oil sump starter. Check high pres-
sure switch.
FAILURE TO START EXCESS ACCELERATION
TIME
CA P Excess Acceleration: Check guide vane
closure at start-up.
Check that guide vanes are closed at start-up. Check
starter for proper operation. Reduce unit pressure
if possible.
FAILURE TO START STARTER TRANSITION
FAULT
RUN AUX Starter Transition Fault: Check 1CR/
1M/Interlock mechanism.
Check starter for proper operation.
Run contact failed to close.
FAILURE TO START 1CR AUX CONTACT FAULT 1CR AUXStarter Contact Fault: Check 1CR/1M
aux. contacts.
Check starter for proper operation.
Start contact failed to close.
FAILURE TO START MOTOR AMPS NOT SENSED CA P Motor Amps Not Sensed: Check motor
load signal.
Check for proper motor amps signal to SMM. Check
wiring from SMM to current transformer. Check main
motor circuit breaker for trip.
FAILURE TO START LOW OIL PRESSURE Low Oil Pressure [LIMIT]: Check oil pressure
switch/pump and 2C aux.
The oil pressure differential switch is open when the
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 con-
denser pressure switch.
*[LIMIT] is shown on the LID 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.
G. COMPRESSOR JUMPSTART AND REFRIGERANT PROTECTION
PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE/PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
UNAUTHORIZED
OPERATION
UNIT SHOULD BE
STOPPED
CA P Emergency: Compressor
running without control authorization.
Compressor is running with more than 10% RLA
and control is trying to shut it down. Turn power
off to compressor if unable to stop. Determine cause
before repowering.
POTENTIAL FREEZE-UP EVAP PRESS/TEMP
TOO LOW
ERT Emergency: Freeze-up
prevention.
Determine cause. If pumping refrigerant out of ma-
chine, stop operation and go over pumpout pro-
cedures.
FAILURE TO STOP DISCONNECT POWER RUN AUX Emergency: DISCONNECT
POWER.
Starter run or start contacts are closed while con-
trol tried to shut down. Disconnect power to starter.
LOSS OF
COMMUNCIATION
WITH STARTER Loss of Communication with Starter: Check
machine.
Check wiring from PSIO to SMM. Check SMM mod-
ule troubleshooting procedures.
STARTER CONTACT
FAULT
ABNORMAL 1CR OR
RUN AUX
1CR AUX Starter Contact Fault: Check
1CR/1M aux. contacts.
Starter run and start contacts energized while ma-
chine was off. Disconnect power.
POTENTIAL FREEZE UP COND PRESS/TEMP
TOO LOW
CRT [VALUE] exceeded limit of [LIMIT]*
Emergency: Freeze-up prevention.
The condenser pressure transducer is reading a
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 ALARM
if vessel is evacuated.
*[LIMIT] is shown on the LID 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.
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