Mitsubishi Electronics MSZ-FD09NA service manual Made in Japan

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TM

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Mar. 2008. No. OBH497 REVISED EDITION-A 7 Distributed in Jan. 2008. No. OBH497 7

Made in Japan

New publication, effective Mar. 2008 Specifications subject to change without notice.

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Contents MSZ-FD09NA MSZ-FD12NA Specification has been corrected New model Accessories Part Names and FunctionsPower supply Phase, Hz 208/230 Weight External ﬁnishRemote controller Indoor modelOperating Range Outlet AIR Speed and Coverage RangeOutlines and Dimensions Unit inchAir Air outWiring Diagram Unitinch Refrigerant System DiagramRefrigerant flow in cooling Refrigerant flow in heating Service Functions Timer Short ModeHow to modify the remote controller P.C. board P.C. Board Modification for Individual OperationAuto Restart Function How to release Auto Restart FunctionOperation Microprocessor Control Refer toLamp lights during operation Lamp blinks in abnormal conditionDRY Operation Cool OperationHeat Operation Auto Change Over ··· Auto Mode Operation Mode selectionAuto Vane Operation Outdoor Unit MXZ seriesDirection Feet, set the horizontalVertical vane Area Setting See Control OperationSee Sensor Enlarged view of i-see SensorNighttime Cold area DaytimeLighted Not lighted Operation and operating range Center ·····Program Timer Changing temperature indication F/C Minute Time Delay OperationEMERGENCY/TEST Operation Troubleshooting Before troubleshooting, check the followingLead wiring Housing point Troubleshooting procedure How to replace batteriesFailure Mode Recall Function OFFIndoor unit failure mode table PowerInstruction of Troubleshooting Troubleshooting Check Table Lighted BlinkingArea R Power Trouble Criterion of Main Parts MSZ-FD09NAMSZ-FD12NA Troubleshooting Flow Check of indoor fan motorPage Replace the horizontal vane motor, How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Indoor electronic control P.C. board Test Point Diagram and VoltageSW P.C. Board Power monitor receiver P.C. board Monitor P.C. board Disassembly Instructions Removing the panel Photo Operating Procedure Photos Open the rear cover of the power monitor receiver P.CRemoving the nozzle assembly Removing the electrical box PhotoPhoto Removing the vertical vane motor unit Correct positionRemoving the horizontal vane motor Photo Removing the indoor fan motor and the line flow fan PhotoMade in Japan