Daikin FAQ71CVEB Operation Manual

Also see for FAQ100CVEB: Installation manual Service manual Service manual

Contents

Daikin FAQ71CVEB Operation Manual Manual pdf 17 page image

English 13XI. 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 7.)• Read through characteristics of the COOLINGOPERATION, characteristics of the HEATINGOPERATION, and characteristics of the PRO-GRAM DRY OPERATION on page 6, 7.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 circuitbreaker 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 or indoorunit 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 condensation10. TROUBLE SHOOTINGTabTrip positionPower circuit breaker(earth leakage breaker)ONOFFat 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 outdoorunit is blocked with obstacles.Note: After a while, the vertical airflow adjust-ment flaps at the air outlet are closedwhile the unit stops.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” on page 8.)• If the set temperature is not proper (Set to anappropriate temperature, airflow rate, and dis-charge direction.).• If the FAN SPEED button is set to LOWSPEED (Set to an appropriate temperature,airflow rate, and discharge direction.).• If the airflow angle is not proper (Set to anappropriate temperature, airflow rate, and dis-charge direction.).• If the doors or the windows are open. Shut doorsor windows to prevent wind from coming in.• If direct sunlight enters the room (when cooling).Use curtains or blinds.• When there are too many inhabitants in theroom (when cooling).• If the heat source of the room is excessive(when cooling).4. Though the on/off button was not pressed,the unit started or stopped.• Are you sure that the ON/OFF timer operation isnot used?Turn off the ON/OFF timer.• Are you sure that a remote control device is notconnected?Contact the central control room that directedthe stop.• Are you sure that the display for centralizedcontrol is not lit?

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