Black & Decker MUZ-FD12NA- U1, MUZ-FD09NA- U1 service manual New publication, effective Jan

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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	New publication, effective Jan. 2008
Distributed in Jan. 2008. No. OBH498 7	New publication, effective Jan. 2008
Made in Japan	Specifications subject to change without notice.

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Contents MUZ-FD09NA MUZ-FD09NA- U1 MUZ-FD12NA MUZ-FD12NA- U1 Page Technical Changes Part Names and FunctionsSpecification MUZ-FD09NA MUZ-FD12NATest condition Operating RangeOutlines and Dimensions Required SpaceWiring Diagram Refrigerant System Diagram MAX. Refrigerant Piping Length and MAX. Height DifferenceData Performance Curve Cooling MUZ-FD09NA MUZ-FD12NAHeating MUZ-FD09NACondensing Pressure Cooling Condensing pressure65 70F Standard Operation Data MSZ-FD09NA MSZ-FD12NATest RUN Operation How to operate fixed-frequency operation Correction of Heating capacityActuator Control Outdoor FAN Motor ControlR.V. Coil Control Relation Between Main Sensor and ActuatorService Functions TroubleshootingChange in Defrost Setting PRE-HEAT Control SettingFailure Mode Recall Function OFFOperational procedure Outdoor unit failure mode table Troubleshooting Check Table Page Trouble Criterion of Main Parts MUZ-FD09NAMUZ-FD12NA WHT REDHow to check inverter/ compressor Check of open phaseTroubleshooting Flow Check of compressorCheck of compressor winding Check of compressor operation timeCheck of compressor start failure Unit operates Cool mode even if it is set to Heat mode Unit operates Heat mode even if it is set to Cool modeCheck of outdoor thermistors Check of R.V. coilCheck of power supply Check of outdoor fan motorCheck of LEV Expansion valve Check of inverter P.C. board Emergency OperationPage Electromagnetic noise enters into TV sets or radios Outdoor unitTest Point Diagram and Voltage Inverter P.C. boardDisassembly Instructions Removing the cabinet PhotoRemoving the inverter assembly, inverter P.C. board Photo Photo 4 inverter assemblyPhoto Removing the discharge temperature thermistor Removing R.V. coilRemoving outdoor fan motor Photo Removing the compressor and 4-way valvePage New publication, effective Jan