Installation manual

Pumped Refrigerant System Operation and Maintenance38
Alarm messages and suggested actions
Alarm Message Severity Action Required
Bypass Valve Actuator Fault Warning • Verify the actuator is connected properly.
• Tighten the linkage screw on the actuator shaft.
• Confirm that the rotary switch is pointing toward the top of the cooling
unit when the valve in the fully closed position.
• For assistance, contact Technical Support.
CM Communication Fault Critical • Verify that the power is ON to the Cooling Module.
• Contact Technical Support.
Condenser Inlet
Temperature Sensor Fault
Warning • Make sure the temperature sensor entering the heat exchanger is
connected and placed properly.
• Make sure the Condenser Inlet temperature threshold is set correctly in
the Sensor Measurements screen.
• If the problem persists, contact Technical Support.
Condenser Outlet Pressure
Sensor Fault
Critical • Make sure the pressure sensor leaving the heat exchanger is connected
and placed properly.
• If the problem persists, contact Technical Support.
Condenser Outlet
Temperature Sensor Fault
Critical • Make sure the temperature sensor leaving the heat exchanger is
connected and placed properly.
• If the problem persists, contact Technical Support.
Condensing Temperature
High Violation
Warning • Verify that the chilled water temperature and flow is within
specifications.
• If the problem persists, contact Technical Support.
Condensing Temperature
Low Violation
Warning • Verify that the chilled water temperature and flow is within
specifications.
• If the problem persists, contact Technical Support.
CW Valve Actuator Fault Critical • Verify the actuator is connected properly.
• Tighten the linkage screw on the actuator shaft.
• Confirm that the rotary switch is pointing toward the top of the cooling
unit when the valve is in the fully closed position.
• For assistance, contact Technical Support.
DC Power Supply 1 Fault Critical • Contact Technical Support.
DC Power Supply 2 Fault Critical • Contact Technical Support.
Discrete Input Abnormal Warning • Contact Technical Support.
Entering Fluid Temperature
High Violation
Warning • Verify that the temperature sensor is properly installed.
• Make sure the chiller is operating properly.
• If the problem persists, contact Technical Support.
Inlet Water Temperature
Sensor Fault
Warning • Make sure the temperature sensor is connected and placed properly.
• If the problem persists, contact Technical Support.
Low Refrigerant Level Warning • Add necessary amount of refrigerant to maintain the minimum
refrigerant level in the receiver.
No Redundant Pump Warning • There are other Pump Faults that must be resolved.
• If the problem persists, contact Technical Support.
No Temperature/Humidity
Sensors Available
Critical • Make sure the sensors are connected and configured properly.
• Make sure the CAN terminators are installed
• Contact Technical Support.
Outlet Water Temperature
Sensor Fault
Warning • Make sure the sensor is connected properly.
• Make sure the Water Out temperature threshold is set correctly in the
Sensor Measurements screen.
• If the problem persists, contact Technical Support.
Persistent Pumps Vapor
Locked
Critical • Contact Technical Support