Daikin FFA50A2VEB9 Installer And User Reference Manual

15 Energy saving and optimum operationInstaller and user reference guide25FFA25~60A2VEB(9)Split system air conditioners4P550955-4 – 2018.08Heating operationFan only operation2 Press the ON/OFF button on the user interface.Result: The operation lamp lights up and the system startsoperating.14.3 Using the dry program14.3.1 About the dry program▪ The function of this program is to decrease the humidity in yourroom with minimal temperature decrease (minimal room cooling).▪ The micro computer automatically determines temperature andfan speed (cannot be set by the user interface).▪ The system does not go into operation if the room temperature islow (<20°C).14.3.2 To use the dry programTo start1 Press the operation mode selector button on the user interfaceseveral times and select (program dry operation).2 Press the ON/OFF button of the user interface.Result: The operation lamp lights up and the system startsoperating.To stop3 Press the ON/OFF button on the user interface once again.Result: The operation lamp goes out and the system stopsoperating.NOTICEDo not turn off power immediately after the unit stops, butwait for at least 5 minutes.14.4 Adjusting the air flow directionRefer to the operation manual of the user interface.14.4.1 About the air flow flapDouble flow+multi-flow unitsFor the following conditions, a micro computer controls the air flowdirection which may be different from the display.Cooling Heating▪ When the room temperature islower than the settemperature.▪ When starting operation.▪ When the room temperature ishigher than the settemperature.▪ At defrost operation.▪ When operating continuously at horizontal air flow direction.▪ When continuous operation with downward air flow is performedat the time of cooling with a ceiling-suspended or a wall-mountedunit, the micro computer may control the flow direction, and thenthe user interface indication will also change.The air flow direction can be adjusted in one of the following ways:▪ The air flow flap itself adjusts its position.▪ The air flow direction can be fixed by the user.▪ Automatic and desired position .WARNINGNever touch the air outlet or the horizontal blades while theswing flap is in operation. Fingers may become caught orthe unit may break down.NOTICE▪ The movable limit of the flap is changeable. Contactyour dealer for details. (only for double-flow, multi-flow,corner, ceiling-suspended and wall-mounted).▪ Avoid operating in the horizontal direction . It maycause dew or dust to settle on the ceiling or flap.15 Energy saving and optimumoperationObserve the following precautions to ensure the system operatesproperly.▪ Adjust the air outlet properly and avoid direct air flow to roominhabitants.▪ Adjust the room temperature properly for a comfortableenvironment. Avoid excessive heating or cooling.▪ Prevent direct sunlight from entering a room during coolingoperation by using curtains or blinds.▪ Ventilate often. Extended use requires special attention toventilation.▪ Keep doors and windows closed. If the doors and windows remainopen, air will flow out of your room causing a decrease in thecooling or heating effect.▪ Be careful NOT to cool or heat too much. To save energy, keepthe temperature setting at a moderate level.▪ NEVER place objects near the air inlet or the air outlet of the unit.Doing so may cause a reduced heating/cooling effect or stopoperation.▪ Turn off the main power supply switch to the unit when the unit isNOT used for longer periods of time. If the main power supplyswitch is on, the unit consumes electricity. Before restarting theunit, turn on the main power supply switch 6 hours beforeoperation to ensure smooth running.▪ When the display shows (time to clean the air filter), clean thefilters (see "16.1.1 To clean the air filter" on page 26).▪ Keep the indoor unit and user interface at least 1 m away fromtelevisions, radios, stereos, and other similar equipment. Failing todo so may cause static or distorted pictures.▪ Do NOT place items under the indoor unit, as they may bedamaged by water.▪ Condensation may form if the humidity is above 80% or if thedrain outlet gets blocked.16 Maintenance and serviceNOTICENever inspect or service the unit by yourself. Ask aqualified service person to perform this work. However, asend user, you may clean the air filter, suction grille, airoutlet and outside panels.WARNINGNever replace a fuse with a fuse of a wrong ampere ratingsor other wires when a fuse blows out. Use of wire orcopper wire may cause the unit to break down or cause afire.