Carrier 19XL Start-Up, Operation And Maintenance Instructions Manual page 73

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
K. CHILLER PROTECT LIMIT FAULTS
Excessive numbers of the same fault can lead to severe
chiller damage. Seek service expertise.
PRIMARY MESSAGE SECONDARY MESSAGE
HIGH DISCHARGE
PROTECTIVE LIMIT
TEMP
LOW REFRIGERANT
PROTECTIVE LIMIT
TEMP
HIGH MOTOR
PROTECTIVE LIMIT
TEMPERATURE
HIGH BEARING
PROTECTIVE LIMIT
TEMPERATURE
PROTECTIVE LIMIT LOW OIL PRESSURE
PROTECTIVE LIMIT NO MOTOR CURRENT
PROTECTIVE LIMIT POWER LOSS
PROTECTIVE LIMIT LOW LINE VOLTAGE
PROTECTIVE LIMIT HIGH LINE VOLTAGE
LOW CHILLED
PROTECTIVE LIMIT
WATER FLOW
LOW CONDENSER
PROTECTIVE LIMIT
WATER FLOW
HIGH CONDENSER
PROTECTIVE LIMIT
PRESSURE
1CR AUX CONTACT
PROTECTIVE LIMIT
FAULT
RUN AUX CONTACT
PROTECTIVE LIMIT
FAULT
PROTECTIVE LIMIT CCN OVERRIDE STOP
SPARE SAFETY
PROTECTIVE LIMIT
DEVICE
EXCESSIVE MOTOR
PROTECTIVE LIMIT
AMPS
EXCESSIVE COMPR
PROTECTIVE LIMIT
SURGE
PROTECTIVE LIMIT STARTER FAULT
STARTER OVERLOAD
PROTECTIVE LIMIT
TRIP
TRANSDUCER
PROTECTIVE LIMIT
VOLTAGE FAULT
*[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 temperature, pressure, voltage, etc., at which the control tripped. [OPEN] indicates that an input circuit is open.
NOTE: See Legend on page 68.
with Troubleshooting Guides (cont)
ALARM MESSAGE/PRIMARY CAUSE
CMPD [VALUE] exceeded limit of
[LIMIT]*. Check discharge temperature.
ERT [VALUE] exceeded limit of [LIMIT]*.
Check evap pump and flow switch.
MTRW [VALUE] exceeded limit of
[LIMIT]*. Check motor cooling and
solenoid.
MTRB [VALUE] exceeded limit of
[LIMIT]*. Check oil cooling control.
OILPD [VALUE] exceeded limit of
[LIMIT]*. Check oil pump and
transducer.
Low Oil Pressure [OPEN]*. Check oil
pressure switch/pump and 2C aux.
CA P Loss of Motor Current: Check
sensor.
V P Power Loss: Check voltage
supply.
V P [VALUE] exceeded limit of
[LIMIT]*. Check voltage supply.
V P [VALUE] exceeded limit of
[LIMIT]*. Check voltage supply.
EVFL Flow Fault: Check evap pump/flow
switch.
CDFL Flow Fault: Check cond pump/
flow switch.
High Cond Pressure [OPEN]*. Check
switch, oil pressure contact, and water
temp/flow.
High Cond Pressure [VALUE]: Check
switch, water flow, and transducer.
1CR AUX Starter Contact Fault: Check
1CR/1M aux contacts.
RUN AUX Starter Contact Fault Check
1CR/1M aux contacts.
CHIL S S CCN Override Stop while
in LOCAL run mode.
SRP PL Spare Safety Fault: Check
contacts.
CA P [VALUE] exceeded limit of
[LIMIT]*. High Amps; Check guide vane
drive.
Compressor Surge: Check condenser
water temp and flow.
STR FLT Starter Fault: Check starter
for fault source.
STR FLT Starter Overload Trip: Check
amps calibration/reset overload.
V REF [VALUE] exceeded limit of
[LIMIT]*. Check transducer power
supply.
73
ADDITIONAL CAUSE/REMEDY
Check discharge temperature immediately. Check sen-
sor for accuracy; check for proper condenser flow and
temperature; check oil reservoir temperature. Check
condenser for fouled tubes or air in chiller. Check for
proper guide vane actuator operation.
Check for proper amount of refrigerant charge; check
for proper water flow and temperatures. Check for
proper guide vane actuator operation.
Check motor temperature immediately. Check sensor
for accuracy. Check for proper condenser flow and
temperature. Check motor cooling system for restric-
tions. Check motor cooling solenoid for proper opera-
tion. Check refrigerant filter.
Check for throttled oil supply isolation valves. Valves
should be wide open. Check oil cooler thermal expan-
sion valve. Check sensor accuracy. Check journal and
thrust bearings. Check refrigerant filter. Check for ex-
cessive oil sump level.
Check power to oil pump and oil level. Check for dirty
filters or oil foaming at start-up. Check for thermal
overload cutout. Reduce ramp load rate if foaming
noted.
NOTE: This alarm is not related to pressure switch
problems.
Check the oil pressure switch for proper operation.
Check oil pump for proper pressure. Check for exces-
sive refrigerant in oil system.
Check wiring: Check torque setting on solid-state
starter. Check for main circuit breaker trip. Check
power supply to PSIO module.
Check 24-vdc input sensor on the SMM; adjust potenti-
ometer if necessary. Check transformers to SMM.
Check power to PSIO module. Check distribution bus.
Consult power company.
Perform pumps Control Test and verify proper switch
operation. Check all water valves and pump operation.
Check the high-pressure switch. Check for proper con-
denser pressures and condenser waterflow. Check for
fouled tubes. Check the 2C aux. contact and the oil
pressure switch in the power panel. This alarm is not
caused by the transducer.
Check water flow in condenser. Check for fouled
tubes. Transducer should be checked for accuracy.
This alarm is not caused by the high pressure switch.
1CR auxiliary contact opened while chiller was run-
ning. Check starter for proper operation.
Run auxiliary contact opened while chiller was running.
Check starter for proper operation.
CCN has signaled chiller to stop. Reset and restart
when ready. If the signal was sent by the LID, release
the Stop signal on STATUS01 table.
Spare safety input has tripped or factory-installed
jumper not present.
Check motor current for proper calibration. Check
guide vane drive and actuator for proper operation.
Check condenser flow and temperatures. Check con-
figuration of surge protection.
Check starter for possible ground fault, reverse rota-
tion, voltage trip, etc.
Reset overloads and reset alarm. Check motor current
calibration or overload calibration (do not field-calibrate
overloads).
Check transformer power (5 vdc) supply to trans-
ducers. Power must be 4.5 to 5.5 vdc.