609 StarCool Alarm Codes And Actions

609 Defrost Trouble
Description Defrost is running
Cause Defrost terminated on Tsuc
Trouble
shooting		 Possible causes:
  • Hot gas valve not working probably.
  • Defective Psuc.
  • Defective Tevap.
Accompanied alarms:
  • Maybe AL 207
  • Maybe AL 12
  • Maybe AL 610
Trouble shooting:
  1. If companied alarms AL 207 or AL 123 run troubleshooting for these alarms first.
  2. Hot gas valve is not working probably. Let the compressor run by 35 Hz in manual. Open hot gas valve 50% and control the valve function. Is the sound as usual? If not control with a permanent magnet and test coil function. 
  3. If it looks like the hot gas valve is working as usual run function test step compressor. If alarms, look for troubleshooting for these alarms.
  4. If no alarms, run a manual activated defrost and follow the behavior of Tevap, Tsuc, Tret, and Psuc
Criteria Defrost terminated on Tsuc above 30°C (86°F)

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