Panasonic CU-E15FKR Operating Instructions Manual page 11

NON SERVICEABLE CRITERIAS
TURN OFF POWER SUPPLY and CALL Authorized Distributor under the following conditions:
• Abnormal noise during operation
• Water/foreign particles have entered the Remote Control
• Water leak from Indoor unit
• Circuit breaker switches off frequently
• Power cord becomes unnaturally warm
• Switches or buttons are not functioning properly
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