607 StarCool Alarm Codes And Actions

607 AirEx open
Description Air exchange valve open in conflict with settings
Cause Indication of user having left air exchange open
Trouble
shooting		 Possible causes:
  • Air exchange valve open in freeze mode or AV+ mode
  • Air exchange open in 50% - 60% RH.
  • Cable or air exchange sensor defective or not calibrated correctly
Accompanied alarms:
  • Possibly AL 305.
Trouble shooting:
Calibrate the air exchange sensor (see Controller System Menu decal for air
exchange sensor calibration)
  1. See and clear error for alarm AL 305.
  2. Close air exchange. If air exchange is closed, cable for air exchange sensor or sensor is defective see AL 305 for trouble shooting.
Criteria Air exchange is open while unit being in the frozen mode, dehumidification with set point
below 60%, and or with CA or AV+ running.

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