Carrier 17EX Start-Up, Operation And Maintenance Instructions Manual page 90

Table 12 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
L. CHILLER PROTECT LIMIT FAULTS
Excessive numbers of the same fault can lead to severe chiller
damage. Seek service expertise.
PRIMARY MESSAGE SECONDARY MESSAGE
PROTECTIVE LIMIT HIGH DISCHARGE TEMP
PROTECTIVE LIMIT LOW REFRIGERANT TEMP
PROTECTIVE LIMIT HIGH MOTOR TEMPERATURE
PROTECTIVE LIMIT HIGH BEARING 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
PROTECTIVE LIMIT LOW CHILLED WATER FLOW
PROTECTIVE LIMIT LOW CONDENSER WATER FLOW
PROTECTIVE LIMIT HIGH CONDENSER PRESSURE
PROTECTIVE LIMIT HIGH CONDENSER PRESSURE
PROTECTIVE LIMIT 1CR AUX CONTACT FAULT
PROTECTIVE LIMIT RUN AUX CONTACT FAULT
PROTECTIVE LIMIT CCN OVERRIDE STOP
PROTECTIVE LIMIT SPARE SAFETY DEVICE
PROTECTIVE LIMIT EXCESSIVE MOTOR AMPS
PROTECTIVE LIMIT EXCESSIVE COMPR SURGE
PROTECTIVE LIMIT STARTER FAULT
PROTECTIVE LIMIT STARTER OVERLOAD TRIP
*[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.
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 condenser 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.
High Cond Pressure [VALUE]*: Check switch,
water flow, and transducer.
CR 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 wa-
ter temp and flow.
STR FLT Starter Fault: Check starter for
fault source.
STR FLT Starter Overload Trip: Check
amps calibration/reset overload.
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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 sen-
sor 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 ex-
pansion valve. Check sensor accuracy. Check jour-
nal and thrust bearings. Check refrigerant filter. Check
for excessive oil sump level.
Check power to oil pump and oil level. Check for dirty
filters or oil foaming at start-up. Check for thermal over-
load 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 ex-
cessive refrigerant in oil system.
Check wiring: Check torque setting on solid-state starter.
Check for main circuit breaker trip. Check power sup-
ply to PSIO module.
Check 24-vac input on the SMM (terminals 23 and
24). Check transformers to SMM. Check power to PSIO
module. Check distribution bus. Consult power
company.
Perform pumps control test (from CONTROL TEST
table) 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 water flow. 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.
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 run-
ning. 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 cur-
rent calibration or overload calibration (do not field-
calibrate overloads).