700 StarCool Alarm Codes And Actions

700 FC missing
Description FC Missing
Cause Indication of defective FC, lack of or improper connection
Trouble
shooting		 Possible causes:
  • Communication with FC broken.
  • Power voltage to the FC not applied (wired for emergency operation?).
  • Defective FC.
  • X8 cable is defective.
  • Main controller defective.
Accompanied alarms:
  • AL 306 or one or more AL 5XX may also be active.
Trouble shooting:
  1. Verify that cable FC-com is mounted correctly according to wiring diagram inside the controller cabinet and not being damaged.
  2. Check that power to the FC is not wired for emergency operation.
  3. Verify that there are correct voltages on all 3 phases for the FC.
  4. Measure with a multimeter that there is a small DC signal on the connector PCB for cable FC-com.
a) If there is no signal: The main controller is defective. Replace the main controller.
b) If there is signal: The FC is defective and must be replaced. If there is no FC replacement available, the unit can be rewired for emergency operation: See “Emergency Operation” p. 50
Criteria Communication with FC not possible

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