12 English• A continuous flow “Shah” sound is heardwhen the system is in COOLING OPERATIONor at a stop.The noise is heard when the drain pump is inoperation.Moisture removed from the indoor air during theCOOLING OPERATION is drained. (The drain-ing device is provided as an optional part.)• A “Pishi-pishi” squeaking sound is heardwhen the system is in operation or after thestop of operation.Expansion and contraction of plastic partscaused by temperature change makes thisnoise.VIII.DUST FROM THE UNITS• Dust may blow out from the unit after startingoperation from long resting time.Dust absorbed by the unit blows out.IX. THE UNITS GIVE OFF ODORS• During operationThe unit absorbs the smell of rooms, furniture,cigarettes, etc., and then emits them.If odor is a concern, you can set to zero airflowrate when the indoor temperature reaches theset temperature.For details, contact your Daikin dealer.X. THE UNIT DOES NOT COOL EFFECTIVELY.• The unit is operating in program dry mode.This is because program dry mode operates sothat the indoor temperature decreases as littleas possible.Lower the indoor temperature using COOLINGOPERATION, and then use PROGRAM DRYOPERATION.(Refer to “CHARACTERISTICS OF THE PRO-GRAM DRY OPERATION” on page 6.)• Read through characteristics of the COOLINGOPERATION, characteristics of the HEATINGOPERATION, and characteristics of the PRO-GRAM DRY OPERATION on page 5, 6.Please check before requesting a service call.1. If the system does not operate at all.• Check if no fuse has blown.Turn off the power supply.• Check if the power circuit breaker is blown.Turn the power on with the power circuitbreaker switch in the off position.Do not turn the power on with the power circuit10. TROUBLE SHOOTINGbreaker switch in the trip position.(Contact your dealer.)• Check if there is a power failure.Wait until power is restored. If power failureoccurs during operation, the system automati-cally restarts immediately after the power sup-ply recovers.2. If the system stops operating after operationis complete.• Check if the air inlet or outlet of outdoor orindoor unit is blocked by obstacles.Remove the obstacle and make it well-venti-lated.• Check if the air filter is clogged.Ask a qualified service person to clean the airfilters.(Refer to “MAINTENANCE” on page 8.)If the air filter is clogged, the airflow rate willdrop and as a result the performance will alsodrop.In addition, this may cause dew condensationat the air outlet.(Refer to “MAINTENANCE” on page 8.)3. The system operates but it does not suffi-ciently cool or heat.• If the air inlet or outlet of the indoor or the out-door unit is blocked with obstacles.Remove the obstacle and make it well-venti-lated.Obstacles decrease the airflow rate, andcause performance decrease and breakagewhen discharged air is suctioned.They cause a waste of electricity, and that maystop the devices.• If the air filter is clogged.Ask a qualified service person to clean the airfilters.(Refer to “MAINTENANCE” on page 8.)A decrease in the airflow volume of the air con-ditioner will result and the performance of theair conditioner will be degraded if the air filter isclogged with dust or dirt.In addition, this may cause dew condensationat the air outlet.(Refer to “MAINTENANCE” page 8.)• If the set temperature is not proper (Set to anappropriate temperature, airflow rate, and dis-charge direction.).TabTrip positionPower circuit breaker(earth leakage breaker)ONOFF