- Pump on demand: Activates when the pressure is below the cut-in set-point on an automatic pressure actuated
controller.
- Controller Trouble: Important: this relay is normally energized when controller is in normal condition. The relay is
de-energized when controller trouble is detected (fail safe). The controller trouble common alarm is active when one
or more of these conditions are active:
• Phase Loss N1
• Phase Loss N2
• Phase Loss N3
• Phase Unbalanced
• Normal Phase Reversal
• High Ambient Temperature
• Low Ambient Temperature
• High Water Level
• Low Water Level
• Water Reservoir Empty
• Low Suction Pressure
• Faulty Pressure Transducer
• Fail to Start
• Soft Start Fault
• Motor Trouble
• Pump Room Alarm
• Ground Fault
• Control Voltage not Healthy
• Power Loss
• Overcurrent
• Over Voltage
• Undercurrent
• Under Voltage
• IO Electric Communication Loss
• Weekly Test Check solenoid valve
• Main Contactor Module Failure
• Bypass Contactor Module failure
• Transfer Switch Trouble
• Alternate Circuit Breaker Tripped
• Alternate Isolating Switch Opened
• Alternate Phase Reversal
• IO Transfer Switch Communication Loss
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