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pmfy-nbmu-a service manual

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2. Tooo 1 E Rt 6exp 3390 _ 273 t 32 1 8 273 30 F 6 3kO 50 F 9 70 F 2 5 80 F 2 0kQ EEEN E 90 F 1 6kQ _ No E 100 F 1 3kQ e 140 F 0 6 20 40 60 80 100 120 140 170 Linear expansion valve Operation summary of the linear expansion valve Linear expansion valves open close through the use of a stepping motor after receiving the pulse signal from the indoor controller board Valve position can be changed in proportion to the number of pulse signals Connection between the indoor controller board and the linear expansion valve Controller board Linear expansion valve 1 000 000 White Red Orange White Connector CN60 Note Since the number of the connector at the controller board side and the relay connector are different follow the color of the lead wire 21 Output pulse signal and the valve operation gt pero On Closing a valve 1 gt 2 gt 3 4 1 4 a become OFF Valve position capacity Extra tightening 80 100pulse 3 Trouble shooting Pulse number 5 AN tion 5 oN i 2000 pulse expansion valve Opening a valve all the way
3. 0 028 Polyethylene sheet PP honey comb fabric 33 35 37 39 Note 1 Rating conditions Cooling Indoor D B 80 F W B 67 F outdoor D B 95 F W B 75 F Heating Indoor D B 70 F outdoor D B 47 F W B 43 F Note 2 The number indicated in lt gt is just for the grille 3 Air flow and the noise level are indicated as Low Medium2 Medium1 High x C ZI 3 2 Electrical parts specifications Symbol PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A Parts name Room temperature thermistor TH21 Resistance 30 F 15 8kQ 50 F 9 6kQ 70 F 6 0kQ 80 F 4 8kQ 90 F 3 9kO 100 F 3 2kQ Liquid pipe thermistor TH22 Resistance 30 F 15 8kQ 50 F 9 6kQ 70 F 6 0kQ 80 F 4 8kQ 90 F 3 9kQ 100 F 3 2kQ Gas pipe thermistor TH23 Resistance 30 F 15 8kQ 50 F 9 6kQ 70 F 6 0kO 80 F 4 8kQ 90 F 3 9kQ 100 F 3 2kQ Fuse Indoor controller board FUSE 250V 6 3A DC Brushless Motor Fan motor MF 8 pole OUTPUT 28W PNOH28 MB MSFJC 20M23 PJV 1063 Thermistor resistance 30 F 6 3kQ 50 F 3 9kQ 70 F 2 5kQ 80 F 2 0kQ 90 F 1 6kQ 100 F 1 3kQ DC12V Stepping motor drive port Linear expansion valve LEV 0 2000pulse EDM 40YGME Power supply Lt L2 GR Rated to 330V 30A terminal block Transmission M1 M2 S Rated to 250V 20A terminal block MA remote controller 1 2 Rated to 250V 10A x terminal block Note Refer to WIRING DIAGRAM for the supplied voltage 3 3 A
4. 24 TW7EO1105 RUBBERMOUNT 1 X 25 1 00 Sz DRANPIPEASSY 3 7 cONTROLBOXCOVER _ 1 1 gjmowEWem scnwasY 13 x C ZI ELECTRICAL PARTS PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A 4 LOHr6016 S9qd MEY S sd Remarks 41709 fecon Part Name Specification 12 16 Drawing No SU bon Uni Amount CONTROLBOX 1 RG02B3376 2 T7W E11 716 TERMNALBLOCK Pazo 1 TB 3 T7W E17 716 TERMNALBLOCK 1 556 246 TERMINALBLOCK 1 _ TB5 ADDRESSBOARD 00 300 CABLEASSY Jo 1 7 TW 410 239 FUSE 1 8 T7W E37 310 INDOOR CONTROLLER BOARD whPOWERBOND 1 MB EX E met coo aor ADDRESS BOARD ____ 31 48 Ed Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jul 2004 No OC312 PDF 9 New publication effective Jul 2004 Made in Japan Specifications subject to change without notice
5. 8 Removing the thermistor lt Liquid pipe temperature detection gt lt Gas pipe temperature detection gt 1 Remove the panel Remove the address board cover Remove the electrical parts cover Remove the drain pan Remove the thermistor lt Gas pipe temperature detection gt lt Liquid pipe temperature detection gt 6 Disconnect the lead wire from the cord clamp 7 Disconnect the connector CN21 CN29 on the indoor controller board 3 PANEL PARTS 11 12 11 PMP 16BMU N Q ty set Wiring Recom Part Name Specification Diagram mended PMP 16BMU Drawing symbol 1 TZW E11 003 AIR OUTLET GRILLE 1 o 2 01 E00 055 LATCH 2 J 3 2 4 E00099 PANELHOOK 2 5 E01 054 GRILLE CATCH 2 o o 6 R01 E01 500 LLFILTER 7 R01 E02 500 L L FILTER 1 8 TW7 E01 691 INTAKE GRILLE 1 9 R01 E00 054 GRILLE CATCH 2 10 R01 E00 648 RECEIVER COVER 1 11 R01 00 044 MAGNET 2 12 E00 096 SCREWCAP _ 1 O 13 REMOTECONTROLER PAR20MAU 1 This REMOTE CONTROLLER is made by AIR CONDITIONING amp REFRIGERATION SYSTEMS WORKS MITSUBISHI ELECTRIC CORPORATION 30 FUNCTIONAL PARTS PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A
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7. Opening a valve 4 3 2 1 The output pulse shifts in above order 1 When linear expansion valve operation stops all output phase 2 At phase interruption or when phase does not shift in order motor does not rotate smoothly and motor will locks and vibrates When the switch is turned on 2200 pulse closing valve signal will be send till it goes to point amp in order to define the valve posi When the valve moves smoothly there is no noise or vibration occurring from the linear expansion valves however when the pulse number moves from to or when the valve is locked more noise can be heard than in a normal situation Noise can be detected by placing the ear against the screw driver handle while putting the screw driver tip to the linear Symptom Operation circuit fail ure of the micro processor Linear expansion valve mechanism is locked Short or breakage of the motor coil of the linear expansion valve Valve doesn t close completely Wrong connection of the connector or contact failure Check points Disconnect the connector on the controller board then con nect LED for checking G O1 O gt 1 LED When power is turned on pulse signals will send for 10 seconds If the LED does not light or keeps lighting even after the signals stop that means some failures in the operation circuit Motor will idle and make a ticking noise when the motor is operated while
8. Part number that is circled is not shown in the figure Qtyiset Wiring Recom Price Part Name Specification PMFY NBMU A died Diagram mended Drawing symbol Q ty 08 10 uas _____ 1 DAD ADDRESS BOARD COVER 1 fror 22 102 BEARINGMOUNT 1 005 103 SLEEVEBEARING 1 RO1 E02 114 LINEFLOWFAN 3 1 E00 O79 STABLIZERASSY E00 092 VANE SLEEVE 1 1 pwemee peream 1 E E T7WE49 480HEATEXCHANGER 3 E10 529 DRAINPANASSY 1 j 10 RO1 Eoo 202 THERMISTOR ROOM 1 1 Eoo 1 12 RO1 E01 202 THERMSTOR 1 ma 13 RO1 Eos 202 THERMISTOR GaAS 1 3 TH3 1 1 15 ROi EGG AOi INEAREPANSONVADE 3 3 _____ 3 5 HzRO E01 223 VANEMOTOR 3 3 M E00 sO caSNGASSY 1 1 19 RO1 241 SENSORHOLDER Ja 20 RO1 E01 266 DRAINSENSOR 1 9PS giTTWEOTSS DRANPUMP Joa 9P 22 R01 E00 130 MOTORSUPPORT 1 23 T7WE22762FANMOTOR 3 5
9. no controller 3 Restriction of the downward vane setting When setting the downward vane B or C in Medium1 Medium2 or Low of the fan speed notch the vane changes to horizontal position after 1 hour has passed 13 x C SN 7 2 DRY operation lt How to operate gt Press POWER ON OFF button 2 Press the operation MODE button to display DRY Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the v5or Cz button is pressed one time Dry 67 to 87 F A MITSUBISHI ELECTRIC DRY CooL CENTRALLY CONTROLLED AUTO FAN CHECK an mi opp REGE Em RP Cv Vex es 25 N FF SPEED C OO DIRECTION 65 gt LOUVER o c u gt SENSOR INSIDE Control modes Control details 1 1 Dry mode temperature is controlled by TH21 E Ne Dry mode ON Room temperature desired temperature 2 F y p Dry mode OFF Room temperature desired temperature Room 3 min passed since starting operation Dry mode Dry mode ON OFF tpe atte Room temperature Ta time min time min Ta 82 82 F gt Ta 79 F Over 64 F 79 F gt Ta 75 F 75 F gt Ta Less than 64 F Dry mode OFF 1 2 Frozen prevention control No control function Indoor fan operation control depends on the compressor conditions Dry mode Fan speed notch ON Note Remote controller
10. 4 Vane control Up down vane change Control details Remarks 2 3 Thermostat OFF mode When the thermoregulating function changes to OFF the indoor fan operates in Extra low 2 4 Heat defrosting mode The indoor fan stops No drain pump operation However when the control changes from COOL or DRY operation the drain pump operates for 3 minutes 1 Initial setting OFF HEAT last setting When changing the mode from exception of HEAT to HEAT operation Downward C 2 Vane position Horizontal Downward Downward Downward C Swing 3 Restriction of vane position D The vane is horizontally fixed for the following modes The control by the remote controller is temporally invalidated and controlled by the unit Thermostat OFF Stand by hot adjuster Extra low mode Heat defrost mode 17 x C ZI 7 5 AUTO operation Automatic COOL HEAT change over operation lt How to operate gt Press POWER ON OFF button 2 Press the operation MODE button to display AUTO Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the Cor button is pressed one time Automatic 67 to 83 F When in AUTO mode the unit will switch from either heat or cool automatically to maintain the set temperature SM MITSUBISHI ELECTRIC DRY CENTRALLY CONTROLLED die EN GE na crock VELATON gel 82
11. 92 26 1 1 66 8 6 youd 1 18 9 1 6 1 18 921 91 91 9 20 8 7 11 _ 666 91 6 01 P 2 2 9 qo 057 9 L S L 94 ell epis 096 91 81 15 epis 0001 8 6 0 52 WIRING DIAGRAM PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A NO 0 LAS noez due SMS FLAS OMS LIMS ZLMS 01681997551 151 L910 LISIA ON NOILOANNOO N NO A Z O o LLI e e lt HOOQNI LXAN OL m O 1 ees 28 01 TING Es D ER L z q3u 2 4 dau E LHM KEN ro 5 por ZENO 2 q V 5 9 M lt gt o JiOWdH 7 55154 m T L HM 5 ph ii UHM EH 3 em ZH09 055 805 N ig ae o AlddNS H3MOd S e 2 FIS Gay SHS 5 A0 729 GNO LSNO Wann S LN HJTIOHINOO 1 m OSN H3TIOHLNOO 29 Hy L8N _ JIOW3H ATIVHIN3 WH 2191 cg 918 aa RERUM Eu 2 1HM LHM 039 ur 22 LL s Es iL Jg 89 Br 09NO I2NO 6
12. 80 SET TEMP IUE i 189 SENSOR INSIDE Ses Control modes Control details 1 Initial value of HEAT mode for room temperature lt Desired temperature operation mode COOL mode for room temperature Desired temperature 2 Mode change 1 HEAT mode gt COOL mode Room temperature Desired temperature 4 F or 15 min has passed 2 COOL mode HEAT mode Room temperature Desired temperature 4 F or 15 min has passed 3 COOL mode Same control as cool operation MEN 4 HEAT mode Same control as heat operation I 7 6 When unit is stopped Control mode Control modes Control details Remarks 1 Drain pump 1 1 Drain pump control The drain pump turns ON for the specified amount of time when any of the following conditions are met regardless of whether the compressor is ON or OFF ON for 3 minutes after the operation mode is switched from COOL or DRY to another operation mode HEAT mode 2 ON for 6 minutes after the drain sensor is determined to be submerged using the liquid level detection method given below ON for 6 minutes after indoor piping liquid piping temperature indoor room temperature 3 18 F AND the drain sensor input is at the short or open level If condition or G is still being met after the drain pump has been turned ON for 6 minutes the drain pump is kept ON for a further 6 minutes Liquid level detection met
13. DS LED2 CN3A CN2M Power supply R B Connect to the terminal block TB15 Connect to the terminal block TB5 MA Remote controller connecting wire M NET transmission connecting wire Between D to 8 7 13V DC 24 30V DC non polar 26 9 DISASSEMBLY PROCEDURE PMFY 08NBMU A PMFY 10NBMU A Be careful when removing heavy parts PMFY 12NBMU A PMFY 16NBMU A OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS Photo 1 1 Removing the intake grille Opening the air intake grille 1 Press the PusH Jof the air intake grille See figure 1 2 Put your fingers on both ends of the air intake grille and let it down after the grille clicks Removing the air intake grille n 1 Press the PusH Jof air intake grille and pull down both Wu ends with your fingers after the grille clicks Me ly I moo an _ ur A J See figure 1 2 Pull out the handle of air intake grille toward you Air filter See figure 2 Fi 1 3 Unhook the string which secures air intake grille igure See figure 3 Figure 2 Figure 3 27 x C O OPERATING PROCEDURE PHOTOS amp ILLUSTRATIONS 2 Removing the electrical parts box Claw in middle Nozzle Electrical parts 1 Remove the panel of nozzle 2 Remove the address board cover 3 Remove the electrical parts cover OW LIN LAE A G 4 Disconnect the
14. minutes regulated by e Room temperature desired temperature 2 F Thermostat ON temperature e Room temperature desired temperature Thermostat OFF Controlled by the remote controller 4 speed Give priority to under mentioned controlled mode 2 1 Stand by hot adjuster mode 2 2 Preheating exclusion mode 2 3 Thermostat OFF mode When the compressor off by the thermoregulating 2 4 Cool air prevention mode Defrosting mode 2 1 Stand by hot adjuster mode The fan controller becomes the stand by hot adjuster mode for the following conditions When starting the HEAT operation When the thermoregulating function changes from OFF to ON When release the HEAT defrosting operation Hot adjuster mode 1 1 STAND BY will be displayed Set fan speed by the remote controller during the stand by hot adjuster mode Extra Low A B C A Stand by hot adjuster mode start B 5 minutes have passed since the condition A or the indoor liquid pipe temperature turned 65 F or more C 2 minutes have passed since the condition A Terminating the stand by hot adjuster mode 2 2 Preheating exclusion mode 1 This control is same for the model When the condition changes the auxiliary heater ON to OFF without auxiliary heater thermoregulating or operation stop etc the indoor fan operates in Low mode for 1 minute To be continued on the next page 16 From the preceding page Control modes 2 Fan 3 Drain pump
15. setting is not acceptable 3 Drain pump Same control as COOL operation 4 Vane Same control as COOL operation up down vane change 14 7 3 FAN operation lt How to operate gt Press POWER ON OFF button Press the operation MODE button to display FAN a MITSUBISHI ELECTRIC DRY cooL CENTRALLY CONTROLLED um GE no aoc OF B VENTILATION U CTEST RUN 888 F lange AVAILABLE SET TEMP BE Soe gt INSIDE GERI veTUATON smD Br RR Control modes Control details Remarks Set by remote controller Type Fan speed notch 4 speeds type Low Medium2 Medium1 High 2 Drain pump 2 1 Drain pump control The drain pump turns ON for the specified amount of time when any of the following conditions are met ON for 3 minutes after the operation mode is switched from COOL or DRY to another operation mode FAN 2 ON for 6 minutes after the drain sensor is determined to be submerged using the liquid level detection method given below ON for 6 minutes after indoor piping liquid piping temperature indoor room temperature 18 F AND the drain sensor input is at the short or open level If condition or is still being met after the drain pump has been turned ON for 6 minutes the drain pump is kept ON for a further 6 minutes Liquid level detection method The liquid level is detected by de
16. 240V If the unit is used at the 208V set the voltage to 208V 25 x C O 8 4 TEST POINT DIAGRAM PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A CN32 T me i Capacity setting Function setting Model selection S O OG Wl Damper _ i A CN25 CAS CMS 9 97 Drain pump output Connecter m Aa Humidifier 5 i is st amp DP Between to N s N r 220 240V AC RI lt p j j j jJ CND Connect to the C C C ESO WISI _ 051 terminal block 2 3 m 8 p z Power supply for lt H 4 indoor controller CN6V O 8 5 63 board connecting Vane motor output T 254 wire MV Between O to fc 208 230V AC CN52 Remote indication FUSE 6 3A 250V 5 CN51 Centrally control L JL jll A BRO L RG00B426 FAN CN41 Fan motor output HA terminal A MF 6794 w CN60 Linear expansion valve output LEV LE Y Q SIE EL CN20 Room temperature thermistor TH21 r4 a42t 042062 CN21 Pipe temperature thermistor Liquid m ud CN29 Pipe temperature gt thermistor Gas m TH23 2 Oo roe 500 LED1 Power supply 1 Indoor unit CN31 208 230V Drain sensor
17. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS No OC312 TECHNICAL amp SERVICE MANUAL Series PMFY Ceiling Cassettes Models P M rFY 08 N B M U A QQ p M FY 1 0 N 8 U A PUHY 80TMU or PUHY 100TMU PMF Y 12NBMU A PMF Y 16NBMU A CONTENTS 1 FEATURES 2 2 PART NAMES AND FUNCTIONS 3 3 SPECIFICATION 5 4 OUTLINES AND DIMENSIONS 9 5 WIRING DIAGRAM 10 6 REFRIGERANT SYSTEM DIAGRAM 11 7 MICROPROCESSOR CONTROL 12 8 TROUBLESHOOTING 20 9 DISASSEMBLY PROCEDURE 27 10 PARTS 30 INDOOR UNIT D CITY MULT a AM MITSUBISHI ELECTRIC Y CONTROLLED AUTO ae Be CHECK TIMER decks P Mid nad CTEST RUN mer G88 82 88 SET TEMP Indoor Unit Microprocessor Remote controller Models Cooling capacity Heating capacity PMFY 08NBMU A 8 000 9 000 Btu h PMFY 10NBMU A 10 000 11 000 Btu h PMFY 12NBMU A 12 000 13 500 Btu h PMFY 16NBMU A 16 000 17 000 Btu h 1 1 Fresh Air Intake Air recycled indefinitely can become stale and stagnant with air quality suffering significantly Fresh air is the answer and it is for this reason that the PMFY series takes in air directly from outdoors This fresh air intake allows you to enjoy the
18. D 4 At cooling mode each Vane cooling limit angle setting X4 Horizontal angle angle can be used only 1 hour SWS 7 siparsionvavewhen the Effective Not effective Function thermostat is ORE X5 SW 3 9 setting setting 8 Heating 4deg up Not effective Effective PMFY 08 10NBMU A ON PMFY 12 16NBMU A OFF 9 Target superheat setting 5 9deg 5deg 6 6deg 2deg 6 SW 3 10 setting PMFY 08 10NBMU A ON Target sub cool setting 5 15deg 10deg PMFY 12 16NBMU A OFF X6 The numerical valve in the parentheses shows the case which the R22 outdoor unit is connected N 2 In case replacing the indoor controller board make sure to set the switch to the factory preset status which is shown below Before Setting 1 5 ON power for OFF supply 123 4 5 Indoor controller board series 24 Effective SW11 Address board 1st digit Address can be set while the address unit is stopped setting SW12 SWi1 Address setting should be done when lt At delivery gt remote controller is being used Swit TEE T TN 9 TN Rotary switch Address board This is the switch to be used when the indoor Before At delivery unit is operated with R2 series outdoor unit S as a set up y Rotary switch Address board 220V 240V 208V 230V If the unit is used at the 230V area At delivery set the voltage to 230V 220V
19. DC and 15V DC SMS Replace the fan motor JV Yes Replace the indoor controller board 23 x C O 8 3 FUNCTION OF DIP SWITCH Operation by switch Switch Function Effective Remarks ming Buln remote controller Address board Filter clogging detection Not provided At delivery Filter cleaning sign 2 500hr 100hr 4 Fresh air intake Effective Not effective 5 Switching remote Indicating if the Indicating fan operation controller display thermostat is ON ON OFF Humidifier control Always operated while the heat in ON 1 Operated depends on the condition 22 ON OFF 12345678910 X1 Fan operation at Heating mode X2 Heater thermstat ON is operating X3 SW 1 7 OFF SW 1 8 Setting air flow SW 1 7 OFF SW 1 8 ON Indoor fan stop 7 2 Extra low 8 Heat thermostat OFF S Autores tuoton SW 2 Indoor controller board PMFY 08NBMU A O ggg OY MM Before eum ON 123456 123456 pomi At delivery supply Mg anam ON Set for each capacity 123456 123456 1 Heat pump Cool only Cooling only Heat pump Indoor controller board Available Not available Set while the unit is off Available Not available At delivery setting ON 4 Vane swing function Available Not available o an 12345678910 5 Vane horizontal angle Second setting First setting ME
20. ER display This indicates when a malfunction has occurred in the unit which should ba checked This displays the selected set This lamp lights when electricity is temperature supplied to the unit Caution Only the Power display lights when the unit is stopped and power supplied to the unit When the central control remote control unit which is sold separately is used the ON OFF button operation switch button and TEMP adjustment button do not operate NOT AVAILABLE is displayed when the Air speed button is pressed This indicates that this room unit is not equipped with the fan direction adjustment function and the louver function When power is turned ON for the first time it is normal that HO is displayed on the room temperature indication For max 2minutes Please wait until this HO indication disappear then start the operation 3 SPECIFICATION 3 1 Specification PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A Electric characteristic Exterior munsell symbol Unit Galvanized sheets Standard grills ABS resin acrylic coating Munsell 0 98Y 8 99 0 63 gt 9 1 16 lt 1 3 16 gt Dimensions 31 31 32 lt 39 3 8 gt 15 9 16 lt 18 1 2 gt Line flow fan X 1 CEM 250 280 300 320 270 300 340 370 in WG Fan motor output k Pipe din 1 2 dimensions PN 1 4 1 1 0 PVC pipe VP 20 connectable Product weight Ib 31 lt 7 gt
21. ature The This sets the current time start time This sets the ventilation fan speed temperature setting can be performed and stop time in 2 F units Setting range COOLING 67 F to 87 F HEATING 63 F to 83 F ON OFF button This switches between the operation and stop modes each time it is pressed The lamp on this button lights during TIMER button operation ws lt This switches between continuous ge operation and the timer operation NI J p p F AIR DIRECTION button This adjusts the vertical angle of the ventilation TIMER OPERATION SWITCH button OO emas Press this button to switch between C CO om FILTER button cool dry automatic and heat modes This resets the filter service indication display LOUVER button CHECK TEST RUN button To switch the horizontal fan motion Only press this button to perform an ON and OFF inspection check or test operation Do not use it for normal operation Not available for this model Display rdi CLOCK display iom let a condition where all CONTROLLED display The current time start time and stop play lamps light is shown for expla This indicates when the unit is con time can be displayed in ten second nation purposes although this differs trolled by optional features such as intervals by pressing the time switch from actual operation central control type remote button The start time or s
22. comfort of crisp refreshing air in the confines of your living or working space 1 2 Light and Compact The main unit weighs a measly 31 lb and the panel a mere 7 Ib This makes the PMFY series one of the lightest in the industry The unit size is also quite small having been standardised to a strikingly compact 33 5 8 inch All of this make the chore of installation and maintenance that much simpler and easier 1 3 Aesthetically Pleasing Nothing ruins the look of a carefully decorated room more than a poorly designed bulky air conditioner With the PMFY series there is no need worry The unit mounts directly into the ceiling barely protruding into the living space for a pleasant stylish aesthetic PART NAMES AND FUNCTIONS e Indoor Unit Auto Air Swing Vane Disperses airflow up and down and adjusts the angle Air flow can be changed horizontally of airflow direction by moving the Guide vane to the left or right Horizontal Air Outlet M oum Dr lt x y 2 x Air intake Remove dust and pollutants Returns air from room from return air Remote controller Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button Operation buttons Note This figure is PAR 20MAU Refer to each remote controller manual for the details TEMP ADJUSTMENT button TIME SETTING button AIR SPEED button This sets the room temper
23. connectors of fan motor motor drain pump room temperature thermistor pipe temperature thermistor condenser evaporator temperature thermistor and drain sensor on the electrical controller board 5 Disconnect the lead wire and earth wire from terminal Drain pan block I Photo 3 Electrical parts 6 Remove the electrical parts box Sovet Address board 3 Removing the nozzle Note when the nozzle is removed The insulation material white which prevents water drop is mounted to the side of vane motor remove the insulation material before removing nozzle See figure 4 After completing the service re mount the insulation material as before as shown in right figure JS Mme E After service mount the double layer insulation is without fail The hard material side should be faced toward the nozzle See figure 4 Heat exchanger Room temperature thermistor 1 Remove the panel 2 Remove the room temperature thermistor Figure 4 3 Unhook the claw in the middle of nozzle and remove the drain pan 5 screws See photo 2 4 Remove the nozzle side of the heat exchanger 2 screws 5 Remove the address board cover 6 Remove the electrical parts cover 7 8 Insulation material Hard side of insulation Soft side of insulation Disconnect the connector of vane motor Remove the insulation material white on the right side of nozzle 9 Remove th
24. dnsTewog id3 dueg ZND mope dund Aejerxny X JeyipiuunH ________ 0 owen owen iOQUAS ON UOI 99UUO 10 Dulll9s sseJppy LNS 1101 15 SSeJppy 401199 9 GM Dunes uonoun4j YOUMS LMS E SS JDDV O8 7 4 08 O8 GL 3 0 secyuorejep duie edic 019 v 4 08 8 94 02 binbruonoejep due edic 10 6 REFRIGERANT SYSTEM DIAGRAM PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A Thermistor TH23 lt Gas pipe temperature Strainer 1 OOmesh detection gt F Gas pipe LK Thermistor TH22 Liquid pipe temperature detection Flare connection Heat exchanger Liquid pipe Strainer Linear expansion valve 50mesh Strainer 100mesh Strainer pipe 100mesh Thermistor TH21 lt Room temperature detection gt PMFY 08 10 12 16NBMU A Liquid pipe 1 4 6 35 555 PMFY 08 10NBMU A PMFY 12 16NBMU A Capillary tube 1 0 0 4 6 x 1 834 x 200 O D 23 6 x 1 62 4 x 4 200 Capillary tube O D 43 6 x 1 22 4 x 80 11 MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 7 1 COOL operation lt How to operate gt RUE MEC Press POWER ON OFF button GET DRE rr a0 ooo Press the operation MODE button to display COOL enum RE Press the SET TEMP but
25. e nozzle 6 screws Vane motor Vane motor 4 Removing the vane motor 1 Remove the nozzle Refer to above mentioned 3 Removing the nozzle 2 Remove the vane motor 28 OPERATING PROCEDURE PHOTOSSILLUSTRATIONS Photo 6 5 Removing the drain pump Drain sensor Drain pump 1 Remove the panel 2 Unhook the claw in the middle of nozzle and remove the drain pan 3 Remove the address board cover 4 Remove the electrical parts cover 5 Disconnect the connector of drain pump 6 Remove the drain hose 7 Remove the drain pump 2 screws Fan motor 6 Removing the fan motor and line flow fan Photo 7 1 Remove the panel 2 Unhook the claw in the middle of nozzle and remove the drain pan Unscrew 2 screws at the nozzle side of the heat exchanger Remove the address board cover Remove the electrical parts cover Disconnect the connector of vane motor fan motor and drain pump Remove the nozzle side of the heat exchanger 2 screws Remove the nozzle and line flow fan can be removed without removing the heat exchanger Line flow fan Fan motor 7 Removing the thermistor lt Room temperature detection gt 1 Remove the panel 2 Remove the address board cover 3 Remove the electrical parts cover 4 Remove the thermistor intake temperature detector 5 Disconnect the lead wire from the cord clamp 5 points 6 Disconnect the connector CN20 on the indoor controller board
26. e with out D lt CFM gt Be sure to secure insulation material by tape and such Green CN51 5 on indoor unit board 1 Connector 5P HN Installation at site Package side Multiple remote controller adapter PAC SA88HA E Indoor controller board Be sure to secure insulation material by tape and such Distance between indoor controller board and relay must be within 33 feet Multiple remote controller adapter PAC SA88HA E Static pressure in W G Air flow CFM 3 4 NOISE CRITERION CURVES PMFY 10NBMU A PMFY 12NBMU A 1 Q gt LL o z MAH nou 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz LO N HEN NN NNNEN EHI a h 125 250 500 1000 EX ESS ENSS BUN ve 63 eqr 2000 0 gp 0 gp 13A31 3 ANNOS aNva 120 BAND CENTER Hz 1 cO a gt LL UNIT MICROPHONE CEILING wee Z eqr 200070 gp 0 gp 3unSS3tid ANNOS aNva 3AVLOO BAND CENTER FREQUENCIES Hz 4 OUTLINES AND DIMENSIONS in mm Unit 08NBMU A PMFY eyejd A A PMFY 10NBMU PMFY 12NBMU PMFY 16NBMU A 9
27. f indoor fan motor fan motor controller board Notes High voltage is applied to the connecter FAN for the fan motor Give attention to the service Do not pull out the connector FAN for the motor with the power supply on doing so may result in damage to the board 5 Self check Conditions The indoor fan does not rotate Turn OFF the power supply Wiring contact check Contact of fan motor connector FAN Contact of power supply cable v Was contact good D NN Correct wiring connection JV Yes Fan motor check Measure the resistance between the fan motor connecter O and With the connector pulled out from the board v N Is the resistance 1 or more Replace the fan motor Y Yes Turn ON the power supply Power supply check Check the voltage of the indoor controller board with the connector FAN connected to the board Approx 294 325V DC between the connecter FAN O and G Is the voltage normal s Indoor controller board fuse check Turn off the power supply and check if there is Yes any broken wire by using a tester No Is the fuse normal Replace the fuse Yes Replace the indoor controller board Fan motor position sensor signal check Rotate the fan motor more than one turn slowly and check the voltage between the connector FAN and G with the connector FAN connected to the board N Dose the voltage repeat 0V
28. hen measure the resistance using a tester White Red Yellow Brown Orange Red h Refer to the next 150kQ 109 Open or short page for the details Measure the resistance between the terminals using a tester Surrounding temperature 68 4000 4800 Open or short Measure the resistance after 3 minutes have passed since the power supply was turned off Surrounding temperature 32 140 0 6kQ 6 0kQ Open or short Refer to the next page for the details 20 lt Thermistor characteristic graph gt Thermistor Room temperature detection TH21 lower temperature Thermistor Liquid pipe temperature detection TH22 Thermistor Gas pipe temperature detection TH23 2 Thermistor for lower temperature Thermistor 15 396 Fixed number of 3480 2 30 Resistance KO Rt 15exp 3480 L 2734 32 1 8 273 2 30 F 15 8kO 50 F 9 6kO 70 F 6 0 80 4 8kO 90 F 3 9kO 100 3 2kQ 20 0 20 40 60 80 100 120 Temperature F Thermistor for Drain sensor DS lt Thermistor for drain sensor gt drain sensor Thermistor Ro26 0k 5 Fixed number of B 3390K 2 N
29. hod The liquid level is detected by determining whether or not the drain sensor is submerged based on the amount the temperature rises after self heating the sensor This process is performed if any of the following conditions is met Drain pump is ON 2 Indoor piping liquid piping temperature indoor room temperature 18 F except during defrosting Indoor piping liquid piping temperature or indoor room temperature is at the short or open level temperature 4 Every hour after the drain pump has been switched from ON to OFF 18 7 7 operation 1 Set the current time Press CLOCK ON OFF button to display the current time CLOOK Sur gt mua ime start gt mem imer end _ No display A MITSUBISHI ELECTRIC ON B sc CD _ Each time you press CAD button the time increases in Y increments of one minute Each time you press button B L 800 _ the time decreases in increments of one minute SET TEMP ON OFF Press and hold the button to rapidly change the time lt The time changes increments of minute ten minutes SS units of hour this order C o o Approximately ten seconds after pressing the button the En dici display on the remote controller will turn off The example shows a timer set for operation start at 8 00 and end at 17 00 2 set the mode to continu
30. ir capacity taken from outside PMFY NBMU A series are capable of taking air from outside When taking air from outside the duct fan must be used The air capacity should be 20 or less of the air flow SPEC Hi Fresh air intake hole Knock out Air flow Hi Fresh air intake hole Knock out Air capacity taken from outside 64 CFM Interlocking operation method with duct fan Booster fan Whenever the indoor unit is operating the duct fan must also operate 1 Connect the optional multiple remote controller adaptor PAC SA88HA E to the connector CN51 on the indoor controller board 2 Power the relay by connecting the 12V DC coil terminals from the Yellow and Orange connector lines Use a relay under 1W MB Electromagnetic switch power relay for duct fan X Auxiliary relay 12V DC LY 1F How to read curves Duct characteristics Curveinthe atsite right graphs Q Planned amount of fresh air intake lt gt A Static pressure loss of fresh air intake duct system with air flow amount Q in W G gt B Forced static pressure at air condi tioner inlet with air flow amount Q in W G C Static pressure of booster fan with air flow amount Q in W G gt D Static pressure loss increase amount of fresh air intake dust system for air flow amount Q in W G E Static pressure of indoor unit with air flow amount Q in W G gt Qa Estimated amount of fresh air intak
31. ous as follows Press TIMER button to display 3 Set the time to start the unit as follows Press CLOCK ON OFF button to display ON Press button to set the time that you want the TIMER SET unit to start The start time is displayed at 8121 8 4 Set the time stop the unit as follows SET TEMP QUNVUF C C oc 9 Press CLOCK ON OFF button to display OFF 45S Press button to set the time that you want the LOUVER VENTILATION CHECK TEST p CD Coo unit to stop The stop time is displayed at 5 Set the mode to timer as follows Press TIMER button to display 19 8 1 How to check the parts PMFY 08NBMU A PMFY 10NBMU A PMFY 12NBMU A PMFY 16NBMU A Parts name Thermistor TH21 Room temperature detection gt Thermistor TH22 lt Liquid pipe temperature detection gt Thermistor TH23 lt Gas pipe temperature detection gt Vane motor Green Orange Linear expansion valve Brown Yellow 9 Orange Red White Drain pump Check points Disconnect the connector then measure the resistance using a tester Surrounding temperature 50 F 86 F 4 3kQ 9 6kQ Open or short Refer to the next page for the details Measure the resistance between the terminals using a tester Surrounding temperature 68 F 86 F Brown Yellow 3800 7 Open or short Disconnect the connector t
32. p control Always drain pump ON during the COOL and DRY mode operation Regardless of the thermostat ON OFF When the operation mode is changed from COOL or DRY to any other mode including Stop the drain pump continues to run for 3 minutes Drain sensor function 1 Drain sensor The indoor circuit board energizes the drain sensor at a fixed voltage for a fixed Indoor controller board duration After energizing the circuit board then compares the drain sensor s CN temperature to the one before energizing and judges whether the sensor is in the air or in the water Basic control system While drain pump is turned on it will repeat the following control system and judge whether the sensor is in the air or in the water ON energizing drain sensor OFF Stand by for a minute Stand by for a minute Detect the temperature before energizing To Detect the Judge whether temperature the sensor is in after lt the air or in the energizing water T1 Drain sensor temperature rise At Temperature of drain sensor before current is applied To Temperature of drain sensor after current is applied T1 At To 4 Vane 1 Initial setting Start at COOL mode and horizontal vane 21 SET FOR 1 HOUR up down vane change 2 Vane position Horizontal Downward Downward Downward CSwing gll afar m
33. termining whether or not the drain sensor is submerged based on the amount the temperature rises after self heating the sensor This process is performed if any of the following conditions is met Drain pump is ON 2 Indoor piping liquid piping temperature indoor room temperature 18 F Indoor piping liquid piping temperature or indoor room temperature is at the short or open level temperature 4 Every hour after the drain pump has been switched from ON to OFF 3 Vane Same as the control performed during the COOL operation but with no restriction up down vane change on the vane s downward blow setting 15 x C ZI 7 4 HEAT operation lt How to operate gt Press POWER ON OFF button Press the operation MODE button to display HEAT Press the SET TEMP button to set the desired temperature NOTE The set temperature changes 2 F when the button is pressed one time Heating 63 to 83 F A MITSUBISHI ELECTRIC DRY CENTRALLY CONTROLLED m M EX cock VELATON p 898 u AVAILABLE Vex Quar EN gr W scl Display in HEAT operation DEFROST The DEFROST symbol is only displayed during the defrost operation STANDBY The STANDBY symbol is only displayed from the time the heating operation starts until the heated air begins to blow Functions 1 1 Minimum compressor off cycle is 3
34. the linear expansion valve is locked This ticking sound is the sign of the abnormality Measure the resistance between each coil white red yellow brown orange red blue brown using a tester It is normal if the resistance is in the range of 1500 10 To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode then check the pipe temperature liquid pipe temperature of the indoor unit by the outdoor multi controller board operation monitor During fan operation linear expansion valve is closed completely and if Thermistor Liquid pipe there is any leaking detecting temperature Linear of the thermistor will go lower If the detect temperature is much lower than the tem valve perature indicated in the remote controller it means the valve is not closed all the way It is not neces sary to exchange the linear expansion valve if the leakage is small and not affecting normal operation Check the color of lead wire and missing terminal of the con nector Countermeasures Exchange the indoor con troller board at drive circuit failure Exchange the linear expansion vale Exchange the linear expansion valve If large amount of thermis tor is leaked exchange the linear expansion valve Disconnect the connector at the controller board then check the continuity 22 8 2 TROUBLESHOOTING Check method o
35. ton to set the desired temperature SET TEMP ON OFF NOTE The set temperature changes 2 F when the Cv button is CO oc pressed one time Cooling 67 to 87 F MODE TIMER crGDK IN IFFS FAN SPEED AIRDIRECTIIN FILTER C CO CO CO C LOUVER VENTILATION CHECK TEST TIMER SET Control modes Control details Remarks 1 Functions regulated 1 1 Functions regulated by temperature by temperature Room temperature desired temperature 2 F Thermostat ON e Room temperature desired temperature Thermostat OFF 1 2 Anti freezing control Detected condition When the liquid pipe temp TH22 is 36 F or less in 16 minutes from compressors start up anti freezing control starts and the thermostat OFF Released condition The timer which prevents reactivating is set for 3 minutes and anti freezing control is cancelled when any one of the following conditions is satisfied Q Liquid pipe temp TH22 turn 50 F or above 2 The condition of the thermostat OFF has become complete by thermoregulating etc The operation mode becomes a mode other than COOL The operation stopped 1 3 Compressor time delay e 3 minutes minimum off cycle By the remote controller setting switch of 4 speeds Type Fan speed notch 4 speeds type Low Medium2 Medium1 High To be continued on the next page 12 From the preceding page Control modes Control details Remarks 3 Drain pump 3 1 Drain pum
36. top time is controller always displayed during the timer operation AIR DIRECTION display TIMER display This displays the air direction This indicates when the continuous operation and time operation modes AIR SPEED display It also display the time for the timer operation at the same time as when it is set OPERATION MODE display This indicates the operation mode The selected fan speed is displayed ROOM TEMPERATURE display IRE Ei The temperature of the return air is displayed during operation The E display range is 46 F to 102 F The ami Ice e display flashes 46 F when the actual A temperature is less than 46 F and flashes 102 F when the actual temperature is greater than 102 F IH STANDBY display Operation lamp STANDBY symbol ony i 1203 The STANDBY symbol is only dis fT This lamp lights during operation played from the time the heating goes off when the unit stops and operation starts until the heated air flashes when a malfunction occurs 7 CHECK MODE TESTRUN display DEFROST display This display lights in the check mode or when a test operation is This indicates when the defrost performed operation is performed FILTER display This lamp lights when the filter need CHECK display to be cleaned SET TEMPERATURE display POW

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