Filter
Top Products
Table 9 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
with Troubleshooting Guides (cont)
I. NORMAL RUN OVERRIDES ACTIVE (ALERTS)
PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE/PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
RUN CAPACITY
LIMITED
HIGH CONDENSER PRESSURE
CRP [VALUE]* exceeded limit of
[LIMIT]*. Condenser pressure override.
See Capacity Overrides, Table 4.
Correct operating condition, modify
setpoint, or release override.
RUN CAPACITY
LIMITED
HIGH MOTOR TEMPERATURE
MTRW [VALUE]* exceeded limit of
[LIMIT]*. Motor temperature override.
RUN CAPACITY
LIMITED
LOW EVAP REFRIG TEMP
ERT [VALUE]* exceeded limit of
[LIMIT]*. Check refrigerant charge level.
RUN CAPACITY
LIMITED
HIGH COMPRESSOR LIFT
Surge Prevention Override; lift too high
for compressor.
RUN CAPACITY
LIMITED
MANUAL GUIDE VANE TARGET
GV TRG Run Capacity Limited:
Manual guide vane target.
*[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.
J. OUT-OF-RANGE SENSOR FAILURES
PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE/PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
SENSOR FAULT LEAVING CHW TEMPERATURE
Sensor Fault: Check leaving CHW
sensor.
See sensor test procedure and
check sensors for proper operation
and wiring.
SENSOR FAULT ENTERING CHW TEMPERATURE
Sensor Fault: Check entering CHW
sensor.
SENSOR FAULT CONDENSER PRESSURE
Sensor Fault: Check condenser
pressure transducer.
SENSOR FAULT EVAPORATOR PRESSURE
Sensor Fault: Check evaporator
pressure transducer.
SENSOR FAULT BEARING TEMPERATURE
Sensor Fault: Check bearing
temperature sensor.
SENSOR FAULT MOTOR WINDING TEMP
Sensor Fault: Check motor temperature
sensor.
SENSOR FAULT DISCHARGE TEMPERATURE
Sensor Fault: Check discharge
temperature sensor.
SENSOR FAULT OIL SUMP TEMPERATURE
Sensor Fault: Check oil sump
temperature sensor.
SENSOR FAULT OIL PRESSURE TRANSDUCER
Sensor Fault: Check oil pressure
transducer.
NOTE: See Legend on page 68.
72