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The air conditioner does not operate (Operation lamp is not lit).

Check the following:

  • Make sure the circuit breaker is not turned off and the fuse is not blown. 
  • Make sure the power cord plug is connected securely to the service outlet. 
  • Make sure there is no power outage. 
  • Make sure the remote controller has new batteries. 
  • Make sure the timer is not programmed mistakenly.