Tag: danfoss

All the articles with the tag "danfoss".

• Danfoss FC302 VFD Alarm 80 - Causes & Fix

  5 Jun, 2026

  Alarm 80 means the Danfoss FC302 drive has been initialized to default values. Clear the alarm by resetting the unit, then reload your saved parameter set.

• Danfoss FC302 VFD ALARM 57 - Causes & Fix

  5 Jun, 2026

  ALARM 57 means AMA internal fault on Danfoss FC302. Restart the Automatic Motor Adaptation procedure and verify motor wiring and parameters.

• Danfoss FC302 VFD ALARM 56 - Causes & Fix

  5 Jun, 2026

  ALARM 56 on Danfoss FC302 means 'AMA interrupted by user.' The fix is to restart Automatic Motor Adaptation and let it finish uninterrupted.

• Danfoss VLT AL 4 Fault - Causes & Fix

  4 Jun, 2026

  AL 4 on a Danfoss VLT drive means Mains phase loss. Check for a missing or imbalanced incoming supply phase at the drive input terminals.

• Danfoss FC302 Alarm 58 - Causes & Fix

  4 Jun, 2026

  Alarm 58 on a Danfoss FC302 VFD means AMA internal fault. The drive's Automatic Motor Adaptation failed internally. Contact Danfoss support.

• Danfoss FC302 Alarm 54 - Causes & Fix

  4 Jun, 2026

  Alarm 54 on Danfoss FC302 means 'AMA motor too small.' Usually fixed by correcting motor data parameters or using a properly sized motor.

• Danfoss FC302 ALARM 53 - Causes & Fix

  4 Jun, 2026

  ALARM 53 on Danfoss FC302 means AMA motor too big: the motor is too large for Automatic Motor Adaptation. Verify motor size and parameters.

• Danfoss FC302 Alarm 52 - AMA Low Inom Causes & Fix

  4 Jun, 2026

  Alarm 52 means motor current is too low during Automatic Motor Adaptation. Check parameter 1-24 Motor Current against nameplate data.

• Danfoss FC302 Alarm 51 - Causes & Fix

  4 Jun, 2026

  Alarm 51 on Danfoss FC302 means AMA motor data check failed. Fix: verify motor voltage, current, power in parameters 1-20 to 1-25.

• Danfoss FC302 Alarm 50 - Causes & Fix

  4 Jun, 2026

  Alarm 50 on a Danfoss FC302 VFD means AMA calibration failed. Usually caused by incorrect motor data or wiring problems.

• Danfoss FC302 Alarm 49 - Causes & Fix

  4 Jun, 2026

  Alarm 49 on a Danfoss FC302 VFD means the motor speed is outside configured limits. Adjust parameters 4-11 and 4-13 to fix it.

• Danfoss FC302 Alarm 36 - Causes & Fix

  4 Jun, 2026

  Alarm 36 on a Danfoss FC302 VFD means mains failure or loss of supply voltage. Check input fuses and incoming power connections first.

• Danfoss FC302 ALARM 35 - Causes & Fix

  4 Jun, 2026

  ALARM 35 on a Danfoss FC302 VFD signals an option module fault. Most often fixed by reseating or replacing the option card.

• Danfoss FC302 Alarm 32 - Causes & Fix

  4 Jun, 2026

  Alarm 32 on the Danfoss FC302 VFD means motor phase W is missing. Check wiring and connections on the W output phase first.

• Danfoss FC302 VFD Alarm 29 - Causes & Fix

  4 Jun, 2026

  Alarm 29 means heatsink over-temperature. Most common fix: clean blocked air vents, replace failed cooling fans, or clear dust from fins.

• Danfoss FC302 VFD Alarm 28 - Causes & Fix

  4 Jun, 2026

  Alarm 28 means brake resistor not connected or failed. Check parameter 2-15, inspect wiring, and test resistor continuity.

• Danfoss FC302 Alarm 27 - Causes & Fix

  4 Jun, 2026

  Alarm 27 on Danfoss FC302 VFD signals a brake chopper or brake IGBT fault. Check brake resistor wiring and replace if shorted.

• Danfoss FC302 ALARM 24 - Causes & Fix

  4 Jun, 2026

  ALARM 24 on a Danfoss FC302 VFD means external fan fault. The drive detected the cooling fan stopped, is wired wrong, or airflow is blocked.

• Danfoss FC302 Alarm 48 - Causes & Fix

  3 Jun, 2026

  Alarm 48 on Danfoss FC302 means the 1.8 V control-card supply is out of spec. Most often a defective control card is the fix.

• Danfoss FC302 Alarm 47 - Causes & Fix

  3 Jun, 2026

  Alarm 47 on Danfoss FC302 VFD means 24V control supply is low. Most often caused by overloaded or shorted control wiring on terminal 50.

• Danfoss FC302 VFD Alarm 46 - Causes & Fix

  3 Jun, 2026

  Alarm 46 means power card supply voltage is out of range. Most often caused by a defective heat sink fan or clogged filters.

• Danfoss FC302 ALARM 45 - Causes & Fix

  3 Jun, 2026

  ALARM 45 on Danfoss FC302 VFD means Earth fault 2/Ground fault detected. Most often caused by motor cable insulation breakdown.

• Danfoss FC302 VFD Alarm 44 - Causes & Fix

  3 Jun, 2026

  Alarm 44 on a Danfoss FC302 VFD means earth (ground) fault. The drive detected leakage current to ground. Usually the motor or cable.

• Danfoss FC302 Alarm 43 - Causes & Fix

  3 Jun, 2026

  Alarm 43 means an external fault or interlock signal is active. Check E-stop, safety contacts, and control wiring first.