964 StarCool Alarm Codes And Actions

964 Psuc sens sup HI
Description Controller Internal Voltage Reference Fault
Cause Indication of controller internal voltage reference fault
Trouble
shooting		 Possible causes:
  • Defective power supply for main controller.
  • Defective main controller.
Accompanied alarms:
  • There may be sensor alarms.
  • AL 801 will be activated during FT- or PTI test.
Trouble shooting:
  1. See “Trouble shooting” for AL 963
Criteria Reference voltage Psuc above 5.20V DC

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