CH1500, CH2000 & CH3000 Chiller Operator’s & Installation Manual
© 2010-2014, Cornelius Inc. - 13 - Publication Number: 621055837OPR
High pressure alarm light “ON”.
(Low pressure alarm light cycles
ON/OFF).
A. Restricted condenser airflow.
B. Defective condenser fan and/or
motor.
C. Defective expansion valve.
D. Low or no condenser water flow.
A. Clean the fins of the condenser and
ensure that the air flow is not
restricted.
B. Check to ensure that the fan blade is
not blocked. Replace the fan motor, if
necessary.
C. Replace the expansion valve.
D. Ensure that there is adequate flow
through piping to condenser.
High pressure alarm light is
“ON”.
A. Restricted condenser airflow.
B. Defective condenser fan and/or
motor.
C. Defective expansion valve.
D. Low or no condenser water flow.
A. Clean the fins of the condenser and
ensure that the air flow is not
restricted.
B. Check to ensure that the fan blade is
not blocked. Replace the fan motor, if
necessary.
C. Replace the expansion valve.
D. Ensure that there is adequate flow
through piping to condenser.
Low temperature alarm.
A. Low or no process liquid flow.
B. Defective thermostat.
C. Process water too cold, below 35
° F
A. Ensure that there is adequate flow
through the process piping.
B. Replace the thermostat.
C. Increase the thermostat setting.
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