631 StarCool Alarm Codes And Actions

631 Fuse blown
Description Blown Fuse for fan motors and heaters
Cause Indication of blown fuse
Trouble
shooting		 Possible causes:
  • A 10 A fuse is blown.
  • Unit has used too much power.
  • There is a short-circuit in the power cables used in the unit.
Accompanied alarms:
  • There may be other alarms.
Trouble shooting:
  1. Check the defective fuse in the control cabinet. Replace a defective fuse but only once! If it blows again, there is a short circuit!
  2. Remove short circuits in the power supply or cables before applying power again.
Criteria Supply voltages U1-2, U2-3, U1-3 are OK. Power consumption too high! The averagecurrent of the 2 highest currents is more than the double of the lowest current of I1, I2or I3. Not checked during defrost. The evaporator motors must run.

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