APC ACECFR20200SE4 Installation Manual download pdf (Page 49)

43EcoBreeze System Operation and Maintenance

Supply Temperature Sensor

Fault

Critical • Check the wiring.

• Check and clean the sensor.

• Check the sensor calibration.

• Replace the sensor.

WATER SYSTEM ALARMS

IEC Temperature Sensor Fault Warning • Check the wiring.

• Check and clean the sensor.

• Check the sensor calibration.

• Replace the sensor.

IEC Performance Degradation Warning • Check the strainers for obstruction.

• Check the outdoor air openings for obstructions.

• Check for adequate supply water.

• Check the spray nozzle for an obstruction.

• Check the IEC for cleanliness.

• Check the condenser coil for obstructions.

Loss of IEC Spray Water Critical • Check the IEC water spray nozzles for blockage. Clear

blockage.

• Check the water strainer basket (clean if needed).

• Check the water pressure switch (replace if needed).

• Check the valve actuator (replace if needed).

• Check the Module to Frame water connection.

• Check for leaks in the water system piping.

Dirty Filter Warning Replace the filter.

VARIABLE FREQUENCY DRIVE (VFD) ALARMS

DC Bus Overvolt or Compressor

Phase Loss

Critical Check Alarm Code at the VFD Display:

ObF = DC bus over voltage - Check the drive configuration.

OPF = Compressor phase loss - Check the compressor

wiring. Check the drive configuration. Replace the

compressor if necessary.

VFD Overheating Critical • Check the drive configuration.

• Check the VFD for proper air circulation.

• Replace the drive if necessary.

VFD EEPROM Memory Fault Critical Replace the drive.

VFD Internal Fault Critical Replace the drive.

Invalid VFD Configuration Critical Check the drive configuration.

VFD External Fault Critical Check the compressor and control wiring to the drive.

VFD Auto-tuning Fault Warning Check the drive configuration.

VFD Brake Control Fault Warning • Check the compressor wiring and windings.

• Check the drive configuration.

VFD Communication Fault Critical Check the communications cabling and power to the device.

Frequent VFD Faults Critical Check alarm log for VFD faults and take action based on

those faults.

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APC ACECFR20200SE4 Installation Manual Page 49

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