Danfoss Turbocor TT Series, Service Manual

Page: 259 / 294

Compressor Status
Description
Trigger Method Troubleshooting
l
Review the fault log for actual suction pressure and temperature, entering air/water
temperature (if available) and other conditions that are recorded at the time of fault.
l
Verify suction pressure/temperature sensor. Refer to Section 4.32.3
Pressure/Temperature Sensor Verification on page 246.
Table 5-7 Compressor Status 2 Faults
Compressor Status 2
Description Trigger
Method
Troubleshooting
Suction Pressure
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor
l
Verify the associated sensor and related connections
Discharge
Pressure Sensor
Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor
l
Verify the associated sensor and related connections
Suction
Temperature
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor
l
Verify the associated sensor and related connections
Discharge
Temperature
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor
l
Verify the associated sensor and related connections
Inverter
Temperature
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor
l
Verify the associated sensor and related connections
Cavity
Temperature
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor.
l
Verify the associated sensor and related connections
Soft Start
Temperature
Sensor Fault RFT
l
Sensor errors occur when the sensor is providing a reading that is outside the normal readable
temperature range and therefore must have an error in the reading or functional problem with the
sensor.
l
Verify the associated sensor and related connections
Invalid Bearing
Calibration Fault INS
l
If a bearing calibration is not saved in the EEPROM, this fault will be triggered, a valid calibration is
required prior to the compressor accepting demand.
l
Calibrate the compressor bearings using the Calibration Tool and save to EEPROM. Cycle power and
verify the calibration is retained in EEPROM.
Inverter Cooling
Control Fault AFT
l
Refer to Table 5-6 Compressor Status on page 255 regarding High Inverter Temperature Fault
Troubleshooting
Motor Cooling
Control Fault AFT
l
Refer to Table 5-6 Compressor Status on page 255 regarding High Cavity Temperature Fault
Troubleshooting
M-SV-001-EN Rev. H-1/23/2023 Page 259 of 294