Carrier 19XL Start-Up, Operation And Maintenance Instructions Manual page 70

Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
F. START-UP FAILURES: This is an alarm condition. A manual reset is required to clear.
PRIMARY MESSAGE SECONDARY MESSAGE
FAILURE TO START LOW OIL PRESSURE
FAILURE TO START OIL PRESS SENSOR FAULT
LOW CHILLED WATER
FAILURE TO START
FLOW
LOW CONDENSER
FAILURE TO START
WATER FLOW
FAILURE TO START STARTER FAULT
FAILURE TO START STARTER OVERLOAD TRIP
FAILURE TO START LINE VOLTAGE DROPOUT
HIGH CONDENSER
FAILURE TO START
PRESSURE
EXCESS ACCELERATION
FAILURE TO START
TIME
STARTER TRANSITION
FAILURE TO START
FAULT
FAILURE TO START 1CR AUX CONTACT FAULT
MOTOR AMPS NOT SENSED CA
FAILURE TO START
CHECK REFRIGERANT
FAILURE TO START
TYPE
FAILURE TO START LOW OIL PRESSURE
*[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. [OPEN] indicates that an input circuit is
open.
NOTE: See Legend on page 68.
with Troubleshooting Guides (cont)
ALARM MESSAGE/PRIMARY CAUSE
OILPD [VALUE] exceeded limit of
[LIMIT]*. Check oil pump system.
OILPD [VALUE] exceeded limit of
[LIMIT]*. Check oil pressure sensor.
EVFL Evap Flow Fault: Check water
pump/flow switch.
CDFL Cond. Flow Fault: Check water
pump/flow switch.
STR FLT Starter Fault: Check Starter
for Fault Source.
STR FLT Starter Overload Trip:
Check amps calibration/reset overload.
V P Single-Cycle Dropout Detected:
Check voltage supply.
High Condenser Pressure [OPEN]*:
Check switch, oil pressure contact, and
water temperature/flow.
High Condenser Pressure [VALUE]*:
Check switch, water flow, and
transducer.
CA P Excess Acceleration:
Check guide vane closure at start-up.
RUN AUX Starter Transition Fault:
Check 1CR/1M/Interlock mechanism.
1CR AUX Starter Contact Fault:
Check 1CR/1M aux. contacts.
P Motor Amps Not Sensed:
Check motor load signal.
Current Refrigerant Properties
Abnormal —
Check Selection of refrigerant type
Low Oil Pressure [LIMIT]*:
Check oil pressure switch/pump
and 2C aux.
70
ADDITIONAL CAUSE/REMEDY
Check for closed oil supply valves. Check
oil filter. Check for low oil temperature.
Check transducer accuracy.
Check for excessive refrigerant in oil sump.
Run oil pump manually for 5 minutes.
Check transducer calibration. Check cooler
pressure transducer calibration. Check
wiring. Replace transducer if necessary.
Check wiring to flow switch. Check through
Control Test for proper switch operation.
Check wiring to flow switch. Check through
Control Test for proper switch operation.
A starter protective device has faulted.
Check starter for ground fault, voltage trip,
temperature trip, etc.
Reset overloads before restart.
Check voltage supply. Check transformers
for supply. Check with utility if voltage
supply is erratic. Monitor must be installed
to confirm consistent, single-cycle drop-
outs. Check low oil pressure switch.
Check the high-pressure switch. Check for
proper condenser pressures and con-
denser 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.
Check that guide vanes are closed at
start-up. Check starter for proper operation.
Reduce unit pressure if possible.
Check starter for proper operation.
Run contact failed to close.
Check starter for proper operation.
Start contact failed to close.
Check for proper motor amps signal to
SMM. Check wiring from SMM to current
transformer. Check main motor circuit
breaker for trip.
Pressures at transducers indicate another
refrigerant type in Control Test. Make sure
to access the ATTACH TO NETWORK
DEVICE table after changing refrigerant
type.
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 condenser
pressure switch.