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Download 810900B_March_Operating and service manual.indd
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Item No. 810900B Operating and service manual 524 FC current limit Description Cause FC Current Limit Fault Warning Indication of problems with compressor. Error may be seen during pulldown Possible causes: Trouble shooting (A12) Warning • The compressor motor draws too much current. • Defect FC. Accompanied alarms: • One or more AL 5XX may also be active. Check these alarms also before replacing anything. Trouble shooting: 1) The compressor motor draws too much current from the FC. The motor may be jammed or defect. 2) Turn off unit and wait 10 min. before turning the unit on again. 3) When the unit starts up again, verify that the compressor starts again and is running. 4) If the compressor cannot run or runs very shortly before this alarm appears again, the compressor is defective and must be replaced. 5) If the compressor can run several min. without alarm, the FC may be defective and must be replaced if the alarm appears again. If no FC replacement is available, the unit can be rewired for emergency operation: See Emergency Operations p.50 Criteria Controller action Motor current above 24 Amp for approx. 10 sec None Log X Alarm X Alarm light Consequence If not solved, this problem can cause FC to stop due to alarm 511 Elimination Warning will be marked as inactive in alarm list when reset by FC. Alarm may then be deleted. Log data Parm 1 Parm 2 Active/Inactive Freq FC Parm 3 Parm 4 Parm 5 I FC Psuc Pdis 525 FC overload Description Cause FC Overload Warning Indication of problems with compressor Off Warning 133 of 221 pages
