600 StarCool Alarm Codes And Actions

600	No control sensors
Description	Supply Air Sensor 1, Supply Air Sensor 2, Return Air Sensor and Evaporator Sensor are all malfunctioning.
Cause	Alarm indicates that all control-relevant sensors are defective or unreliable. See also “Temperature control” p. 19 and “Expansion valve control” p. 19
Trouble shooting	Possible causes: Supply Air Sensor 1, Supply Air Sensor 2, Return Air Sensor and Evaporator Sensor are all malfunctioning. X22, X23, X24 and X25 cable is defective. Main controller defective. Accompanied alarms: AL 100 to AL 108. Trouble shooting Verify all other sensor alarms AL 100 to AL 3XX and try to remove these alarms. If this alarm remains active, replace main controller.
Criteria	No valid control sensor values