Danfoss Turbocor TT-300, Руководство по обслуживанию

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M-SV-001-EN Rev.E
Table 22 - Compressor Faults
(Continued)
Compressor Fault
Description
Trigger
Method
Troubleshooting
Sensor Fault RFT
Review fault log for indication of values out of specified ranges recorded at time of fault. Verify the questionable
sensor and related connections for failure.
Inverter temperature: The sensor embedded in the Inverter requires a replacement of the Inverter if determined
faulty.
Cavity Temperature: Verify cavity temperature sensor. See Section 3.19.3.
Suction Temperature: Verify suction pressure/temperature sensor. See Section 3.20.3.
Discharge Temperature: Verify discharge pressure/temperature sensor. See Section 3.20.3.
Leaving Water Temperature: Verify LEAVE jumper is installed on I/O board.
Suction Pressure: Review fault log for recorded value.
Discharge Pressure: Review fault log for recorded value.
High SCR Temperature
Fault
AFT
Indicates the SCR cooling is insufficient.
If this fault occurs three times within a 30-minute period, a Lock-Out Fault will occur.
Ensure the liquid motor-cooling line has sufficient liquid supply and is not blocked.
Prevent prolonged operation at a pressure ratio less than 1.5.
Verify the solenoids are operational and not blocked See Section 3.12.3.
Verify the solenoid actuators. See Section 3.12.3.
Verify the Serial Driver. See Section 3.11.3.
Verify SCR temperature sensor. See Section 3.5.3.3.
Verify SCRs. See Section 3.5.3.
Lock Out Fault INS
If any (or a combination of) the faults listed below occurs more than 3 times within 30 minutes, a Lock-Out fault
occurs:
Inverter Temperature
SCR Temperature
Motor High Current
Inverter Error
Rotor may Be Locked
Back EMF is low
Review fault log for indication of faults recorded at time of lock out fault. Determine cause of the faults and repair
as necessary.
Cycle power to clear Lock-Out Fault. Active alarm/Fault Viewer in SMT allows the Lock Out counter to be
monitored
High Winding
Temperature Fault
AFT
Indicates the Raw Motor Thermal Readout in the Compressor Monitor Tool has exceeded the maximum limit.
Ensure the liquid motor-cooling line has sufficient liquid supply and is not blocked.
Prevent prolonged operation at a pressure ratio less than 1.5.
Verify the solenoids are operational and not blocked. See Section 3.12.3.
Verify the solenoid actuators. See Section 3.12.3.
Verify the Serial Driver. See Section 3.5.3.
Verify the motor thermistor.
High Suction
Superheat Fault
AFT
Based on the compressor suction pressure and temperature values.
Suggests high evaporator temperature combined with low evaporator pressure, insufficient refrigerant charge,
check valve has failed to open or the compressor has been running in surge condition for an extended period of
time.
Check the charge, system load and entering air/water conditions.
Verify check valve opens during compressor operation.
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.
Verify suction pressure/temperature sensor. See Section 3.20.3.
Suction Pressure
Sensor Fault
RFT Indicates the Suction Pressure Sensor is out of range. >1200 or < -30 kPa abs
Discharge Pressure
Sensor Fault
RFT Indicates the Discharge Pressure Sensor is out of range. >3500 or < -30 kPa abs
Suction Temperature
Sensor Fault
RFT Indicates the Suction Temperature Sensor is out of range. >100 or < -30 °C
Discharge Temperature
Sensor Fault
RFT Indicates the Discharge Temperature Sensor is out of range. >110 or < -30 °C
Inverter Temperature
Sensor Fault
RFT Indicates the Inverter Temperature Sensor is out of range >100 or < 0 °C
Cavity Temperature
Sensor Fault
RFT Indicates the Cavity Temperature Sensor is out of range >100 or < -20 °C
Troubleshooting