Carrier AquaEdge 19XR series Start-Up, Operation And Maintenance Instructions Manual page 103

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
G. NORMAL RUN WITH OVERRIDES
ICVC
FAULT PRIMARY MESSAGE
STATE
RUN CAPACITY
120
LIMITED
RUN CAPACITY
121
LIMITED
RUN CAPACITY
122
LIMITED
RUN CAPACITY
123
LIMITED
RUN CAPACITY
124
LIMITED
RUN CAPACITY
125
LIMITED
*[LIMIT] is shown on the ICVC 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 has recorded at the time of the fault condition.
"Exceeded Limit" in Alarm or Alert messages may mean the value is above or below a threshold.
Table 16 — ICVC Primary and Secondary Messages and
SECONDARY MESSAGE
HIGH CONDENSER
PRESSURE
HIGH MOTOR TEMPERA-
TURE
LOW EVAP REFRIG TEMP 122->Evaporator Refrig Temp
HIGH COMPRESSOR LIFT 123->Surge Prevention Over-
MANUAL GUIDE VANE
TARGET
LOW DISCHARGE
SUPERHEAT
PRIMARY CAUSE
120->Condenser Pressure
[VALUE] exceeded limit of
[LIMIT]*.
121->Comp Motor Winding
Temp [VALUE] exceeded limit
of [LIMIT]*.
[VALUE] exceeded limit of
[LIMIT]*.
ride: Lift Too High For Com-
pressor
124->Run Capacity Limited:
Manual Guide Vane Target.
No Alert message
103
ADDITIONAL
CAUSE/REMEDY
Check condenser water pump operation.
Check for high condenser water temperatures
or low flow rate.
Check cooling tower bypass valves and con-
denser water strainers. Verify that chiller isola-
tion valves are open.
Check COND PRESS OVERRIDE setting in
SETUP1 screen.
Check for closed valves or restrictions in
motor cooling lines.
Check for closed refrigerant isolation valves.
Check COMP MOTOR TEMP OVERRIDE
setting in SETUP1.
Check refrigerant filter drier.
Check refrigerant charge.
Check that optional cooler liquid line isolation
valve is fully open.
Check for excessive condenser flow or low
chilled water flow.
Check for low entering cooler water tempera-
ture.
Check that condenser inlet and outlet water
nozzles are piped correctly.
Check for waterbox division plate gasket
bypass.
Check REFRIG OVERRIDE DELTA T setting
in SETUP1 screen.
Check for high condenser water temperature
or low evaporator refrigerant temperature.
Check for high EVAPORATOR APPROACH
or CONDENSER APPROACH.
Check SURGE/HOT GAS BYPASS parame-
ters in OPTIONS screen.
TARGET GUIDE VANE POSITION has been
forced in the COMPRESS screen. Select and
RELEASE force to return to normal (auto-
matic) operation.
Check for oil loss from compressor or excess
oil charge.
Check for excess refrigerant charge. Verify
that the valves in the oil reclaim lines are
open.
Check oil reclaim strainers.
Check ACTUAL SUPERHEAT in OVERRIDE
screen.