Danfoss Turbocor TT Series Service Manual page 259

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