ALARM 38 Internal Fault fault in Danfoss FC301 drive
Cause: When an internal fault occurs, a code number defined in below table.
Troubleshooting:
– Cycle power.
– Check that the option is properly installed.
– Check for loose or missing wiring.
– It may be necessary to contact the Danfoss supplier or service department. Note the code number for further troubleshooting directions.
– 0: The serial port cannot be initialized. Contact the Danfoss supplier or Danfoss service department.
– 256–258: The power EEPROM data is defective or too old. Replace the power card.
– 512–519: Internal fault. Contact the Danfoss supplier or Danfoss service department.
– 783: Parameter value outside of minimum/maximum limits.
– 1024–1284: Internal fault. Contact the Danfoss supplier or Danfoss service department.
– 1299: The option software in slot A is too old.
– 1300: The option software in slot B is too old.
– 1302: The option software in slot C1 is too old.
– 1315: The option software in slot A is not supported/allowed.
– 1316: The option software in slot B is not supported/ allowed.
– 1318: The option software in slot C1 is not supported/ allowed.
– 1379–2819: Internal fault. Contact the Danfoss supplier or Danfoss service department.
– 1792: Hardware reset of digital signal processor.
– 1793: Motor-derived parameters not transferred correctly to the digital signal processor.
– 1794: Power data not transferred correctly at power-up to the digital signal processor.
– 1795: The digital signal processor has received too many unknown SPI telegrams. The AC drive also uses this fault code if
– the: MCO does not power up correctly. This situation can occur due to poor EMC protection or improper grounding.
– 1796: RAM copy error.
– 2561: Replace the control card.
– 2820: LCP stack overflow.
– 2821: Serial port overflow.
– 2822: USB port overflow.
– 3072–5122: Parameter value is outside its limits.
– 5123: Option in slot A: Hardware incompatible with the control board hardware.
– 5124: Option in slot B: Hardware incompatible with the control board hardware.
– 5125: Option in slot C0: Hardware incompatible with the control board hardware.
– 5126: Option in slot C1: Hardware incompatible with the control board hardware.
– 5376– 6231: Internal fault. Contact the Danfoss supplier or Danfoss service department.