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technical & service manual - Mitsubishi Electric Cooling & Heating

1. T TB3 E BRN 520 9 550 i s TEES OP MW W TO INDOOR UNIT RS ACTM CONNECTING WIRES DC 30V Non polar P B Fa TB7 Mig CORN 12 22 170 Us 450 NT He CN2 OLO FOR CENTRALIZED S CONTROL TH8 T DC 30V Non polar 2 5 CN RED RED poe 31 1 pis ABP SUPPLY gi NOFUSE AC208V 230V MO BREAKER 60Hz ere 5 679 00 lt 1 MODEL SELECT gt MODELS SW4 PUMY P4eNHMU Note Only PUMY P48NHMU and PUMY P48NHMU BS DIP SW4 4 for primary heating control Set DIP SW4 4 when power is turned off at unit DIP SW4 4 OFF Disable primary heating function Initial setting SW4 4 ON Enable primary heating function 21 PUMY P36NHMU PUMY P36NHMU BS PUMY P48NHMU PUMY P48NHMU BS SYMBOL NAME SYMBOL NAME SYMBOL NAME 1 Terminal Block
2. Parts of PUMY P36 48NHMU are set as the same service parts as PUMY P36 48NHMU BS Part N Part Specification 7 err pg Remarks art art Name NHMU BS NHMU BS Drawing symboi T7W E03 SIDE PANEL L 1 T7W E03 FAN GRILLE 2 T7W E06 FRONT PANEL 1 R01 1 BASE ASSY 1 RO1 E27 MOTOR SUPPORT 1 R01 01 HANDLE 2 R01 E13 COVER PANEL FRONT 1 1 1 1 1 1 1 1 o R01 COVER PANEL REAR T7W E01 CONDUIT PLATE T7W E19 SIDE PANEL R T7W E08 SERVICE PANEL R01 07 REAR GUARD RO1 E14 TOP PANEL R01 E02 HANDLE 1 2 3 4 5 6 7 8 9 o00 0 0 0 00 00 0 00 O RoHS 98 15 OPTIONAL PARTS DRAIN SOCKET Part No PAC SG61DS E AIR OUTLET GUIDE Part No PAC SG59SG E Need 2 pieces AIR GUIDE Part No PAC SH63AG E Need 2 pieces DRAIN PAN Part No PAC SG64DP E BRANCH PIPE Joint Part No NUMBER OF BRANCHING POINTS CMY Y62 G E 2 CMY Y64 G E 4 CMY Y68 G E 8 99 CITY MUCH 7 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE
3. 111415167 CNF1 en a oe 5 5 SW6 WHT 6385 76 4 L Ej Ec3 ri dd MF1 WHT RED WHT WHT 129 1213 11213 SW1 SW 63H 63L ECCT 1L T 14151617 weit YLW RED Taam S4 US SWT i MF2 WHT LED1 LED2 221 88 88 F500 7 CN2 CN4 TRANS WHT WHT 71615413 211 21 CNDC LED3 PNK CN102 4 F1 WHT 98 SS 5 9 2 WHT 8 48 45 148 1 413211 52 zT TH ST ka CNS1 CNS2 CN41 CN40 181 WHT RED YLW WHT WHT s 1 SL HH 3111 2 21 211 41 1211 14131211 22 211 2 MS
4. TH7 TH6 TH3 4 GE EUH 63HS m t 1 eee 6859 88 GNSS CNON CNLVB SWU2SWU1 SW5 SW6 RED Y MS 63HS 7 6 ERU TT 2 WHT RED WHT WHT 13131 31 Swi sws sw2 pu Den Phim GE ip WHT 63H CN2 WHT LED1 LED2 1 1 WHT 7 4 2 HH Td TRANS 9999999 99 2 LED3 WHT e 7 2 TP1 BLK N102 WHT 8 i 8 uus U x CNS1 CNS2 CN41 4 1 T t RED YLW T TEX ES I WHT WHT EN 3 152C 3 121943 1 SV2 2 1 SV 3 1 ss 2 1CNAC 1 2 1 2 4 14 1 2 SI BLK GRN 8 1 BLU WHT E WHT RED ls 159 29991 9559 4 2154 5 1 2 4 511 US DS3 BLU TB3 Td ovem CNDC RES PEDS 216 PIN 2 5 TABS Zla 5 1 082 WHT 4 Maigi gt RED Fe 205 5 lo 23 mos oT BED 2 CNS TO INDOOR UNIT t 2 WHT pU NS m eee 1 2 CONNECTING WIRES 2 lot CN5 RENE U i 8 DC 30V Non polar 5 2 RED M a bel TN s 4 1 55 warez ote H 58 2628 26 m TEE RED EJ 2 HHH m 2 m M1 o a I 4 c z m
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6. H o O LLI o gt o tc o 2 e O gt tc 0 o Lu O LLI 104 990 104 Joopino CN eps 0S L0 SE 195 SIH JI 001 ae sseippe y MS Sseippv 541001 ou seu 002 101 ejoueH Jejonuoo Jejonuoo JejoJjuoo Jejojuoo 1 a sor vor 201 Slowey 050 100 77777 yun 001 150 yun Be og Sane toe 2 i i 196 2 100pino 6 o i 1 pejoeuuoo Qu i i 1 snu v 0 1 MS MS SSexipy MS Sseippy 2 00 200 ok 100 1 1 PLO 0 yun yun yun yun D e 2 i i i 0 4 o 018818 11 09 104 180 2 S pezijenueo 104 1 8 2 REFRIGERANT SYSTEM DIAGRAM
7. Detected unit Gheckigode 179 98 Indoor Outdoor Remote oid P Outdoor unit Multi controller board 0403 Sele ransmission trouble O Power board communiation trouble 1102 Discharge temperature trouble Check delay code 1202 1300 pressure trouble O Check delay code 1400 1302 High pressure trouble O Check delay code 1402 1500 Excessive refrigerant replenishment Check delay code 1600 1501 Insufficient refrigerant trouble Check delay code 1601 1505 Vacuum operation protection 2500 Water leakage 2502 Drain pump trouble 010 2503 Drain sensor trouble THd 4100 Overcurrent trouble Overload compressor lock Check delay code 4350 4115 Power synchronization signal trouble Check delay code 4165 4220 _ Inverter trouble Check delay code 4320 4230 Overheat protection of radiator panel Check delay code 4330 4250 Power module trouble or Overcurrent trouble Check delay code 4350 4400 Fan controller trouble Outdoor Check delay code 4500 5101 Air inlet sensor trouble TH21 or Discharge temperature sensor trouble TH4 Check delay code 1202 Liquid pipe temp sensor trouble TH22 or 2102 Low pressure saturated temp sensor trouble TH6 O Check delay code 1211 5103 Gas pipe temperature sensor trouble TH23 5105 Piping temperature sensor trouble Check delay code 1205 5106 Outdoor temperature sensor trouble TH7 Check delay code 1221 5110 Heatsink temperature sensor trou
8. jo euin HS OS 201 10001111 Aejap Aupeuuouqe jo euin HS OS LOI 10001110 Aejap Ayeuuouqe euin Buroo OS 2 10001101 yeuuouqe euin ye 108096 10001100 6 666 6 66 Keep Ayjeuuouge jo eum ye 108496 CHL 10001011 Aypeuuouqe jo eum 9HL 10001010 0 euin JE HS 2S pue sJojsiuueu e Aejap Aueuuouqe jo w 108896 1 0001001 josues einsseJd uBiu eyep jo Aejdsiq 24046 Ajeuuouqe jo ye Josues 10001000 2 9 6 841997221 eyep Aeldsip 251011 uo MS 78 JO euin 16 5 pue HS OS jo Aejdsiq Aypeusouge euin pue Josues eJunssaJd uDiu ejdsiq 6 666 6 66 Aypeusouge euin HS OS 59 LLOLOOLO jo euin HS OS Ol 11010001 yjeuuouqe eum HS OS 60 11010000 jo euin HS OS 201 11001111 yjeuuouqe euin HS 2S LOI 11001110 eum ye 108495 11
9. PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY PA48NHMU BS PUMY P48NHMU BS PUMY P36NHMU PUMY P36NHMU BS Refrigerant flow in cooling Refrigerant flow in heating Pressure sensor 21 63HS TEZ Stop valve 63H Outdoor temperature Refrigerant Gas pipe AY Away d lt 5 8 inch gt olenol valve SV1 Capillary tube Ex Thermistor lt Saturation temperature Check valve Distributor of suction pressure gt TH6 44 Strainer 8 lt High pressure gt Oil separator DL Thermistor TH3 heck valve lt L E Check valve lt Low pressure gt Strainer Pipe temperature Discharge Accumulator Low pressure thermistor TH4 switch 63L Compressor _ U Heatsink bc thermistor TH8 Refrigerant Liquid pipe Q mead Ee EE at lt 3 8 inch gt Strainer Service port Capillary tube for oil separator 92 5 00 8 x L1000 mm 2 3 32 1 32 L 39 1 2 inch Refrigerant pipng specifications lt dimensions of flared connector gt Liquid piping Gas pipng P06 P08 P12 P15 P18 6 35 lt 1 4 gt 12 7 lt 1 2 gt Indoor unit P24 P30 P36 P48 P54 99 52 3 8 15 88 lt 5 8 gt Outdoor unit P36 P48 9 52 3 8 15 88 lt 5 8 gt 25 8 3 SYSTEM CONTROL 8 3 1 Example for the System Example for wiring control cables wiring metho
10. Is the voltage of main incoming power No 208 230V 10 AC Yes Is the voltage of CNDC PNK on multi No board 330 350V DC during cooling or heating operation Check the breaker and power sey 2 Yes 15 the voltage between 3pin and Yes 4pin of CN2 on multi controller board 18V DC No Check wiring Normal Replace multi controller board Check 52C relay V Check ACTM TIME CHART ON 208 230V Power supply OFF 52 y OFF ex 48Hz COMP Hz min Hz 350V 290 325V 330 350 290 325V Bus bar voltage ov DC OFF OFF power on starts stop Multi controller board conv circuit operate 330 350V DC stop 290 325V DC 208 230V uie 10 AC N 12 208 230V 10 AC TB1 Power board PA48NHMU 1 i E OI E 1 WIOV INS operate 330 350V DC stop 290 325 DC 64 208 230V 10 U V 10V 180V U W 10V 180V AC V W 10V 180V AC Check method of M NET transmission power board C M NET transmission powerboard check 2 check the voltage of the parts on this
11. yoayo yun 100 00000001 THIN OoN yoayo 51290 Aypeuuouqe 094 epoo 10119 pue Kejdsip 6666 0000 1461 440 146 Dunubr ZAS LAS 92s 1021900 1055910 07 Aejdsip Aejay 00000000 8 9 v Aejdsip 241031 uo Aeldsiq Kejdsiq 8 9921 LMS 74 1dieoai enp zH XelA 1dio291 ZH eseoJoep enp ZH XEN 101999 10 U09109 ZH 10100 101000 1 041009 JUSIINO Ayepuooas jeau xursjeaH uonue eJd xuisjeaH JO esu 88140408 5 04409 041009 Jo esu jeuuouqy ssed q Aq ZH AS uo Ajddns samod uone Il ZH 041009 ZH uoneyu Aq 01402 ZH 04009 efueuosiq uoge eansseJd Aq ZH o3uoo
12. C 26 62 Gg WS LUI lt 8 6 66 gt 000 L UIN pue eq ued pue 4 iuBieu uonepuno 9Le unuog nod Aj eoo peseuound eq ysnw pue 8 5104 lt EM gt 0 LW YM uu jun ay aindas esea d xen 591 11 619 7 SES SOMOS g uu p lt 8 SS lt 8 93 3383 84 93 oje eui ur ureJBeip y umous S sjrejep 1ejnorued jo uonue dx3 ssoooe 91 468 10 eoeds jo 21564 eu SNOILOSHIG ONIHIM ONldld v 51108 32 45 38 Z 32745 3364 19 WIRING DIAGRAM PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU 48 5 SYMBOL NAME SYMBOL NAME SYMBOL NAME 1 Terminal Block lt Power gt MULTI B Multi Controller Board N F Noise Filter Circuit Board TB3 Terminal Block lt T
13. LMS 79 Jo euim HS OS 10 95101 6 666 6 66 HS OS 82 11110110 Oo Ajypeuuouqe HS OS 721 11110101 Os HS OS 99 LLLLOLOO 16 400pu jo asjnd jo Aejdsiq w ye asjnd Buiuedo A31 891 11110011 w ye Buiuedo A31 291 11110010 Kypeuuouqe aul Buiuedo A31 921 11110001 euin HS OS 10 ejdsiq 6 666 6 66 O 16 HS OS 801 11110000 O ye HS OS 7 21 11101111 O Aejap ye HS OS 901 11101110 yjeuuouqe euin 1 asind Bulusdo Aejdsiq Aejap Aujeuuouge ye asind A31 89 11101101 Ayyewsouge asind A31 2 11101100 Aejap 1e esjnd A31 99 11101011 jo ejdsiq 0v 1 00 WHS WOS 2 HS OS 196161 821 LLLOLOLO Oo HS OS 1 291 11101001 2 HS OS 1 921 11101000 HS OS 400 jo e dsiq HS yeeusedns 6uljooo Buunp 9S joooqns Burneeu 6666 6 66 HS OS 89 11100111 5 25 291 1110
14. High pressure sensor 63HS N Compressor MC Low pressure switch 63L 4 lt Solenoid valve coil lt Four way gt 2154 Solenoid valve coil lt Bypass gt SV1 5 Remove the terminal cover and disconnect the Front compressor lead wire Photo 3 Multi controller board MULTI B Terminal cover Cover panel fixing screws Continued to the next page 88 From the previous page OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 6 Remove electrical parts box fixing screw 4 x 10 and Photo 4 part detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Electrical parts box fixing screw 4 Removing the thermistor lt Low pressure saturated temp gt Photo 5 TH6 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Disconnect the connectors TH6 and TH7 red on the Multi controller board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box 5 Pull out the thermistor lt Low pressure saturated temp gt TH6 from the sensor holder Note In case of replacing thermistor lt Low pressure saturated temp gt TH6 replace it together with thermistor lt Outdoor gt TH7 since they are combined together Refer to No 5 below to remo
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16. multi controller board CNDC PNK To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited Check the breaker and power lt No lt No gt Turn the incoming power supply gt and check the resistance of RS1 on the Noise filler board 1 No normal RS1 open 2 Yes open 2 Check wiring Replace noise filter board 2 Check wiring Check M NET power board Check noise filter board 2 1 As for 1 52C relay and RS Replace Noise filter board and check 52C relay wirign power board ACT gt Circuit diagram a not mounted on noise filter circuit board Check wiring Check power board 208 230V 10 AC 52C relay 1 As for P48NHMU 1 52C relay and RS are not mounted on noise filter circuit board Noise filter circuit board 208 230V 10 AC 20 12 1 1 208 230V 10 CNAC1 WHT 5 3 1 2 1 M NET power board Multi controller board CNAC2 RED 63 Check method of ACTM C ACTM check Active Filter Module check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited
17. If the correct voltage DC12 V is not supplied to the remote controller the indicator will not light First check that the power on indicator is lit m If this occurs check the remote controller s wiring and the indoor unit e t Power on indicator Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Pressthe CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK _ SELF CHECK RE Remote controller self diagnosis result When the remote controller is functioning correctly When the remote controller malfunctions Error display 1 NG blinks The remote controller s transmitting receiv ing circuit is defective PO 26 Check for other possible causes as there is no problem with the remote controller Where the remote controller is not defective but cannot operated Error display 2 6833 or 6832 blinks Transmission is not possible Error display 3 ERC and the number of data errors are displayed Data error has occurred ZELFCHECK ZELF CHECK e pr pr Ge L e N There might be noise or interference on the transmission path or the indoor unit The number of data errors is the di
18. 46 35 1 4 The total length of each liquid line is as follows 9 52 A B C a 10m 10m 10 m 15 m 45 m 33 ft 33 ft 33 ft 49 ft 148 ft 6 35 10m 10 10 10m 40 m 33 ft 33 ft 33 ft 33 ft 132 ft Calculation example Additional refrigerant charge 45 m 0 06 kg 40 m 0 024 kg 3 0 kg 0 7kg rounded up 148 ft x 0 041 lbs 132 ft x 0 016 Ibs 6 6 Ibs 1 58 Ibs 15m 49 ft 10m 33 ft 10m 33 ft 10m 33 ft 10m 33 ft At the conditions below 86 11 2 PRECAUTIONS AGAINST REFRIGERANT LEAKAGE The installer and system specialist shall secure safety against leakage according to local regulations or standards The following standards may be applicable if local regulations are not available 11 2 1 Introduction R410A refrigerant of this air conditioner is non toxic and non flammable but leaking of large amount from an indoor unit into the room where the unit is installed may be deleteri ous To prevent possible injury the rooms should be large enough to keep the R410A concentration specified by KHK a high pressure gas safety association installation guide lines 50010 as follows Maximum concentration Maximum refrigerant concentration of of a room is 0 30 kg m accordance with the installation guidelines To facilitate calculation the maximum concentration is expressed in units of kg m kg of R410A per m Maximum
19. 250 0 70 158 340 30 86 160 80C 176F 24kQ 40 C 104 F 104kO 90 C 194 F 17 5kQ 5O0 C 122F 70kQ 100 C 212 F 13 0kQ 100 60 C 140 F 48kQ 110 C 230 9 8kO 25 50 75 100 120 C 77 122 167 212 248 F Temperature 66 9 9 TEST POINT DIAGRAM Outdoor multi controller board PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P36NHMU PUMY P36NHMU BS SW2 SW3 SW7 SW4 CN51 CN102 pump down Test run Forced defrost Model select External signal Connect to the M P B utput Transmission power board SW8 Demand Silent selection SW1 Display selection Self diagnosis SWU2 SWU1 Address setting CNLVB only P36 P48NHMUz Connect to the oudoor noise filter circuit board CN52C DC12V 2nd DIGIT st DIGIT Swu2 63L Low pressure switch 63H High presser switch Input of demand control TH4 Thermistor lt Discharge gt TH3 Thermistor F lt Outdoor pipe gt 5 7 6 lt Outdoor Saturation tem perature of suction 63HS High presser sensor Vea TEST POINT voltage between left pins of PC511 and PC512 pint and pin2 Same as CNF1 2 Swot r L 92870 S veza N sezo Ceesug H Y 155 m Ceca
20. Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Check compressor Replace outdoor power circuit board 41 Abnormal point and detecting method Causes Check points Overvoltage or voltage shortage Abnormal if any of followings are detected during compressor operation Decrease of DC bus voltage to 310V Instantaneous decrease of DC bus voltage to 200V Increase of DC bus voltage to 400V Decrease of input current of outdoor unit to 0 5A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 5A 1 Check point Decrease of power supply voltage Disconnection of compressor wiring Defective 52C Defective ACT module Disconnection or loose connection of CN5 on the outdoor power circuit board 8 Defective 52C drive circuit of outdoor power circuit board Disconnection or loose connection of CN2 on the outdoor power circuit board Defective ACT module drive circuit of outdoor controller circuit board 9 Disconnection or loose connection of CNAF Notes in case of 4220 error Over voltage or voltage shortage Check the facility of power supply Correct the wiring U V W phase to
21. P e 8 M 9 U 5 m S 8 e 8 5 FATWA 4015 10 amp UUU 8 28 6 edid 4101 le L vg 1 ANNAN 8 9 88 51 13 uonouuoo edid sy9 y ob pecans JO SARA 10 punoJc UOISSILWSUEJ Y 10 le e lel 1919 2 1 104 77777 uonisod Dupyeui do A ddns eui 10 punog uoiSsiusueA Y 104 77 16192 A ddns 1ewod eui 104 jeuruue lt 9 L LL ZLZZE lt 06 61 6 gt 066 uonepunoj 9104 EAO 96 21 2 lt 8 6 gt 0 LIN uonepi ejou PUMY P36NHMU PUMY P36NHMU BS PUMY P48NHMU PUMY P48NHMU BS g 3 75752600595 8 5 lt gt BS S EM gt P 1 Ala els els p 5875 22 gt 009 5 1 uno 5 re lt 8 9 gt 9 1 OPIS ay
22. Pipe cutter Cut the pipes Tools for other refrigerants can be used Welder and nitrogen gas cylinder Weld the pipes Tools for other refrigerants can be used Refrigerant charging scale Refrigerant charge Tools for other refrigerants can be used Vacuum gauge or thermis tor vacuum gauge and vacuum valve Check the degree of vacuum Vacuum valve prevents back flow of oil and refri gerant to thermistor vacuum gauge Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A Prepare a new tool Use the new tool as the tool exclusive for R410A A Tools for other refrigerants can be used under certain conditions Tools for other refrigerants can be used 3 3 1 UNIT CONSTRUCTION OVERVIEW OF UNITS Outdoor unit P36 P48 Capacity Type 06 Type 36 Type 06 Type 54 Indoor unit that Number of units 1 6 unit 1 8 unit can be connected Total system wide capacity 50 130 of outdoor unit capacity CMY Y62 G E CMY Y64 G E CMY Y68 G E Branching pipe Branch header Branch header Branch header components 2 branches 4 branches 8 branches Model Ceiling x Ceiling Ceiling Casette Ceil
23. a Same as above b Same as above c Set address switch on outdoor unit P C B as shown below Unit Range Setting Method Indoor Unit IC 001 to 050 Use the smallest address of all the indoor units plus 50 Outdoor unit 051 10 100 Using 2 remote controllers for each indoor unit Main Remote 101 to 150 Controller RC Indoor unit address plus 100 Sub Remote Controller RC Indoor unit address plus 151 to 200 150 3 Group operation 01 02 TBS 7815 TBS 15 Multiple indoor units operated together by 1 remote controller a Same as above b Connect terminals M1 and M2 on transmission cable terminal block 5 of the IC main unit with the most recent address within the same indoor unit IC group to terminal block TB6 on the remote controller c Set the address setting switch on outdoor unit P C B as shown below Unit Range Setting Method Use the smallest address within the IC Main 001 to 050 same group of indoor units Use an address other than that of the IC Main in the same group of indoor units This must be in sequence with the IC Main IC Sub 001 to 050 Use the smallest address of all the 051 to 100 indoor units plus 50 Outdoor Unit Set at an IC Main address within the same group plus 100 Main Remote Controller 10110 150 Set at an IC Main address
24. Check the resistance of thermistor OC 82 F 15 10 C 50 F 9 6kQ 20 68 F 6 3 30 869 4 3 40 C 104 F 3 0kO When there is no problem in above mentioned OG replace the indoor controller board Low pressure saturation temperature thermistor TH6 When controller detects short open in thermistor during the operation the outdoor unit stops once and restarts operation in 3minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts When controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time 5102 is displayed For 10 minutes after starting compressor heating mode above mentioned short open are not detected Short 90 C 194 F or more Open 40 40 F or less Connector TH6 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure 44 Check whether the connector TH6 in the multi controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor OC 32 F 15kQ 10 C 50 9 6 20 C 68 6 3 30 C 869 4 3 40 C 104 F 3 0kO 12345678 Set the SW1 to a LE When the temperature in multi controller b
25. TABP2 SC P2 Connect to the ACTM P Connect 526 P48NHMU Connect to ACTM P36NHMU P48NHMU St 9255 TABP1 SC P1 lt 7 gt A TABU V W Connect to the compressor MC Voltage among phases 10V 180V AC TABN2 SC N2 Connect to the ACTM N2 68 Outdoor noise filter circuit board PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU PUMY P48NHMU BS CNAC2 208 230V AC Connect to the outdoor control ler circuit board CNAC1 208 230V AC Connect to the M NET power cir cuit board M P B El Connect to the earth LO NO Voltage of 208 230V AC is output Connect to the outdoor power circuit board Voltage of 208 230V AC is input Connect to the terminal block TB1 TABS TABT CN5 Primary current Connect to the outdoor power circuit board 5 Current tranceformer Primary current Outdoor noise filter circuit board PUMY P36NHMU PUMY P36NHMU BS 52C Relay PUMY P48NHMU Coil resistance 1550 typ PUMY P48NHMU BS 50 F CN5 86 5018 52C driving signal Connect to the outdoor controller circuit board CNLVB RS1 Rush current protect resistor 200 5 10W LO NO Voltage of 208 230V AC is out put Connect to the outdoor power circuit board CNAC2 208 230V AC Connect
26. Weight kg lbs 130 287 Refrigerant R410A Charge kg Ibs 8 5 18 7 Oil Model L oz 2 3 73 MELS56 NHMU FV50S NHMU High pressure protection HP switch Compressor protection Discharge thermo Over current detection Fan motor protection Overheating Voltage protection Total Piping length Max m ft 120 394 Farthest m ft 80 262 Max Height difference m ft 30 100 1 Chargeless length m ft 50 165 Liquid 9 52 8 8 Piping diameter Gas gmmlinch 15 88 5 8 cool 5 46C DB 23 115 F DB 2 Guranteed operation range heat Rating conditions Cooling Indoor D B 26 7 W B 19 4 D B 80 F W B 67 Outdoor D B 35 C D B 95 F Heating Indoor D B 21 1 C D B 70 Outdoor D B 8 3 C W B 61 D B 47 F W B 43 F 18 15 C WB 0 60 F WB Note 1 20m 70ft In case of installing outdoor unit lower than indoor unit 2 10 46 C 50 115 F DB In case of connecting PKFY P06 P08 type indoor unit 3 Electrical data is for only outdoor unit In case of connecting 2 indoor units of PLFY P24BM type Btu h kW x 3 412 35 31 lbs kg 0 4536 Above specification data is subject to rounding variation 11 5 DATA 5 1 COOLING AND HEATING CAPACITY AND CHARACTERISTICS 5 1 1 Method for obtaining system cooling and heating capa
27. Select the size from the right table PUMY P36 48 18 or lower 24 to 54 3 Refrigerant Piping Diameter In Section From Branch to Branch Liquid Line mm inch Gas Line mm inch 99 52 3 8 15 88 5 8 W Additional refrigerant charge Additional Charge Refrigerant of 3kg 6 6 165 equivalent to 50m 165 ft total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m 165 ft or less there is no need to charge with additional refrigerant If the total extended piping length exceeds 50m 165 ft calculate the required additional refrigerant charge using the procedure shown on the right If the calculated additional refrigerant charge is a negative amount do not charge with any refrigerant Additional refrigerant charge Liquid pipe size Total length of 99 52 x 0 06 kg 3 8 x 0 041 Ibs Liquid pipe size Total length of 96 35 x 0 024 kg 1 4 x 0 016 Ibs Refrigerant amount for outdoor unit kg Ibs m x 0 06 kg m ft x 0 041 Ibs ft m x 0 024 kg m ft x 0 016 lbs ft 3 0kg 6 6 lbs Example Outdoor model P48 Indoor 1 P24 4952 3 8 10 m 83ft a 2 P15 49 52 3 8 10 33 ft 46 35 1 4 3 8 9 52 3 8 10 33 ft c 4 49 52 3 8 46 35 1 4 46
28. shortage operation G Ball valve performance failure not full opened 0 Error detection of discharge superheat 1 High pressure sensor defective 2 Discharge temperature thermistor defective 3 Thermistor input circuit defective and high pressure sensor defective in multi controller board Error detection of TH7 TH3 1 Thermistor defective 2 Thermistor input circuit defective in multi controller board Check the refrigerant amount Check the operation condition and refrigerant amount Q Check the ball valve is fully open 1 Check the ball valve is fully open 2 Check the resistance of discharge temperature thermistor 3 According to Outdoor unit functions set the SW2 and check the high pressure sensor level According to Outdoor unit functions check the discharge temp thermistor level When the high pressure sensor and discharge temp thermistor are normal if the above mentioned detecting pressure level and temp are big different from the actual pressure and temp replace the multi controller board 1 Check the resistance of thermistor 2 According to Outdoor unit functions check the outdoor pipe temp thermistor level 3 According to Outdoor unit functions check the outer temp thermistor level Water leakage 1 Suspensive Abnormality when float switch detects to be in the water and drain pump turns on and off except during cooling or dr
29. Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase Gravimeter 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for R410A the existing fitting specifications Use high tension side pressure of 5 or over Charge hose Only for R410A Use pressure performance of 5 09MPa G or over Electronic scale Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Rn Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment 2 2 PRECAUTIONS FOR SALT PROOF TYPE BS MODEL Although BS model has been designed to be resistant to salt damage observe the following precautions to maintain the performance of the unit 1 2 3 Avoid installing the unit location where it will be exposed directly to seawater or sea breeze If the cover panel may become covered with salt be sure to install the unit in a location where the salt will be washed away by
30. Cooling Heating P30 D B 21 43C 0 109 F 2 D B 10 20 C 14 68 F 3 Indoor side and Outdoor side W B 15 5 35 C 60 95 F intake air temperature P54 D B 21 43C 70 109 F 2 D B 5 20 C 23 68 F 3 W B 15 5 35 C 60 95 F 2 Thermo off FAN mode automatically starts if the outdoor temp is lower than 21 C D B 70 FD B 8 Thermo off FAN mode automatically starts if the outdoor temp is higher than 20 C D B 68 FD B 3 Guaranteed voltage 198 253V 60Hz Item Service Ref 4 SPECIFICATIONS PUMY P36NHMU BS Cooling Capacity 36 000 Heating Capacity 40 000 Input Cool 3 3 22 Input Current Cool 3 A 14 23 15 74 Power factor Cool 59 98 4 Input Heat 3 kW 2 98 Input Current Heat 3 A 12 88 14 24 Power factor Heat 3 98 9 EER Cool 53 Btu h W 11 18 COP Heat 3 W W 4 00 Connectable indoor units Max 6 Max Connectable Capacity 46 800 130 Power Supply Single phase 60Hz 208 230V Breaker Size 30A Max fuse size 40A Min Circuit Ampacity 26A Sound level Cool Heat 49 51 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FDHMT Motor output 2 2 Starting method Inverter Crankcase heater Heat exchanger Plate fin coil An
31. E 021 jy dis E e Auto change over CN3N 22 33 Rc eet i 2 i6 SWt XS ai i 78 M tj 2 Sw2 i si 232111 1 i M i MEN a Ae hc i Silent Mode Demand Control CN3D C RUE c E SWt i X OP CN3D i p 2 1 SW2i i i abr 211 H merui EAS i i Lt K c Distant control board Relay circuit External output adapter PAC SA88HA E Outdoor unit control board Li Error display lamp L2 Compressor operation lamp X Y Relay Y Relay 601 Remote control panel Relay circuit External input adapter PAC SC36NA Outdoor unit control board Lamp power supply Procure locally Max 10m 33ft Coil standard of 0 9W or less for DC 12V Relay power supply Procure locally 10m 33ft ON OFF Swi Heating Cooling SW2 Validity of SW1 Invalidity of SW1 9 Remote control panel Relay circuit External input adapter PAC SC36NA Outdoor unit control board Relay power supply Procure locally Max 10m 33ft ON OFF SW1 Heating Cooling SW2 Validity of SW1 Invalidity of SW1 The silent mode and the demand control are selected by switching the Dip switch 8 1 on o
32. TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jul 2008 No OC366 REVISED EDITION C PDF 7 Distributed in Dec 2007 No OC366 REVISED EDITION B PDF 9 Distributed in Apr 2006 No OC366 REVISED EDITION A PDF 10 Distributed in Jan 2006 No OC366 PDF 10 Made in Japan New publication effective Jul 2008 Specifications subject to change without notice
33. The outdoor unit is not set in 000 or in the range of 51 100 Check the address setting of the outdoor unit The address should be set in 000 or 51 100 When the setting is out of the range reset it turn off power supply of the outdoor unit indoor unit and lossnay for 2minutes or more at the same time and turn on power supply again Remote controller sensor In the case of network remote controller it is an abnormality when incapable response returns from the net work remote controller during the operation When an old type remote controller for M NET is used and the remote controller sensor is specified SW1 1 is ON Replace the remote controller to net work remote controller Serial communication error Abnormal if serial communication between outdoor multi board and outdoor power board is defective Breaking of wire or contact failure of connector CN2 Breaking of wire or contact failure of connector CN4 Defective communication circuit of outdoor power board Defective communication circuit of outdoor multi board for power board 52 Check connection of each connector CN2 CN4 9 Replace outdoor power board Replace outdoor multi board 9 2 REMOTE CONTROLLER DIAGNOSIS MA remote controller is equipped with the diagnosis function If the air conditioner cannot be operated from the remote controller diagnose the remote controller as explained below
34. 1 2 1 open lessthan1Q O The unit does not operate can not be switched ON shot 100kQ 1 0 O The breaker operates it does not opera 054220 Abn 10 No 189 error di OT P and L2 open it does not operate can not be swi 24220 Abn 10 No 189 ACTM error di and N1 1 short 100kQ 1MQ breaker operate open iched ON 4220 Abr 0 No fBV ACTM eror d short 100k0 1MO JOT L2 and N2 1 5 To No40 ACTM am di open x t does not opera 4220 Abnorm 10 No error di The symptom when the unit is in open error condition is described to determine open error by tester check 72 Active filter module PUMY P36NHMU PUMY P36NHMU BS Connect to the outdoor power PUMY P48NHMU circuit board TABP2 PUMY P48NHMU BS 77 vr T Lower side vue 7 L1 L2 Connect to the DCL Reactor Upper side N2 Non connect Connect to the outdoor power circuit board TABP1 Connect to the outdoor power Connect to the outdoor circuit board CNAF Connect to the outdoor power power circuit board TABN1 GND circuit board TABN2 Q Q 15V DC 0 Control signal 5 Not used 6 0 Control signal Connection and internal circuit diagram Do Eror condition Normal value
35. 1 a aa ed 2 Fiw 8 5 gt dug Suc S zm BLK HH FOR CENTRALIZED pe 22 7 CONTROL 3 i DC 30V Non polar 2 Bocca 2 DLA 4 4 38 mm 25 1 1 OO0000 EES 1 1 Ley d 6 ppe BS RED T BLK ie L Mo 1 4 1 N20 wur 4 V U TI POWER SUPPLY lo 208 230V 60Hz ACTM 1 RED dx t d 12 BLY LORN 1 MODEL SELECT 1 ON 0 OFF SW4 x MODELS 17213141516 PUMY P36NHMU 10 1 110 110 PUMY P48NHMU 0 1 1 0 01 23 55 AB 20 20 MS 5 MS 5 191 101 3 2 MS SSeJppv MS SseJppy MS 88 MS 88 MS SSeJppv 900 400 800 600 010 E 1
36. 2 2 97 415 COMPRESSOR ANB33FDHMT Including RUBBER MOUNT E04 STOP VALVE 3 8 E06 BALL VALVE 5 8 E06 STRAINER E44 ACCUMULATOR E02 OIL SEPARATOR E26 CAPILLARY TUBE 92 5 00 8 1000 68 32 1 32 L 39 1 2 inch 7 SENSOR E00 LOW PRESSURE SWITCH E03 BYPASS VALVE E17 SOLENOID COIL lt BYPASS VALVE gt E18 SOLENOID COIL lt 4 WAY VALVE gt E05 4 WAY VALVE H01 THERMISTOR E07 HIGH PRESSURE SWITCH 63H E41 HEAT EXCHANGER N54 CONTROLLER CIRCUIT BOARD C B E27 TERMINAL BLOCK M1 M2 S TB3 TB7 E02 M POWER BOARD M NET P B E20 REACTOR DCL E64 POWER CIRCUIT BOARD P B E07 ACT MODULE ACTM E45 TERMINAL BLOCK 3P L1 L2 GR TB1 E18 NOISE FILTER CIRCUIT BOARD N F E99 THERMISTOR HEATSINK TH8 E22 MAIN SMOOTHING CAPACITOR CE HOO THERMISTOR OUTDOOR PIPE TH3 E12 THERMISTOR DISCHARGE TH4 9 90 0 OD 0 0 9 9 9 9 9 0 0 090 90 9 0 19 206 FUSE 250V 6 3A 97 N a a M rr 1 M M Ce lt lt 4 4 lt lt lt lt 21 2 14 2 STRUCTURAL PARTS PUMY P36NHMU PUMY P36NHMU BS PUMY P48NHMU PUMY P48NHMU BS
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39. 9255 L sesu 9233 p 8 E SLlicos 9 5 g 8 s 525 3 8 E 9 Lj 3 55 tSo LITT sev 8 PCi52 noo Pu e n 3 E E 9 1 8 m orco EERE der 27 15424 Tg 50 1254 22 lt E zva eccu 8 ph 3 4 414 Dm EI 1 5 3 5 ae 5 9 q 5 9 1 i E 8 OK77S 10 3 8 zx od C 5 22 3 gh Y 5 cow lt 976 m d RED 27 259 UL 6 34 2507 IECI27 T6 3ALA50V es UL 2507 2 6 iis CN40 CN41 4 Centralized control power supply For storing jumper connector selection CNS2 Transmission wire of centrallized control CNS1 Indoor outdoor unit connecting wire CN2 to the outdoor power circuit board Power circuit board Transmitting signal to the multi controller board 0 5V DC Zero cross signal 0 5V DC 18VDC ACTM powe
40. Please consult the installation manual that comes with each unit for detailed information on setting procedures 10 5 EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM 10 5 1 Example using a M NET remote controller Breaker for Wiring and Current Leakage Outdoor Power supply uni Single phase 2 wire 60Hz 208 230V Grounded 15A Breaker for Wiring 1 1 and Current Leakage Pull box Power supply Single phase 1 60Hz 208 230V 1 25mm 2 1 6 2 AWG16 EUR NER AWG14 Y 1 6mm 2 gt gt AWG14 Indoor unit 0 5 1 25mm x 2 gt AWG20 AWG 16 1 l 1 Group operation Remote controller wire 82 10 6 METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems including the MULTI S series will depend on the arrangement of the indoor and outdoor units First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company 10 6 1 Obtaining the electrical characteristics of a CITY MULTI S series system 1 Procedure for obtaining total power consumption Page numbers in this tec
41. continuously detected less than or equal to 15 27 F even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes Disconnection or loose connection of discharge temperature thermistor TH4 Defective holder of discharge temperature thermistor 38 Check the installation conditions of discharge temperature thermistor 4 Abnormal point and detecting method Causes Check points Refrigerant shortage When the conditions of below detecting mode I or are satisfied during the compressor operation lt Detecting mode I gt When the below conditions are satisfied completely 1 Compressor is operating in HEAT mode 2 Discharge superheat is 80 C 144 F or more 3 Difference of outer temperature thermistor TH7 and outdoor piping temp thermistor TH3 applies to the formula of 7 lt 5 9 F 4 High pressure sensor is below about 2 04MPa 296PSIG lt Detecting mode gt When the below conditions are satisfied completely 1 Compressor is operating 2 When cooling discharge superheat is 80 C 144 F or more When heating discharge superheat is 90 C 162 F or more High pressure sensor is below about 2 32MPa 337PSIG Gas leakage Gas shortage When heating operation refrigerant shortage feeling operation When heating airflow or thermo OFF are mixed operation it causes a refrigerant
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43. lt Power gt P B Power Circuit Board SW6 Switch lt Function Selection gt TB3 Terminal Block lt Comunication Line gt TABU V W Connection Terminal lt U V W Phase gt SW7 Switch lt Function Selection gt TB7 Terminal Block lt Centralized Control Line TABS T Connection Terminal lt L N Phase gt SW8 Switch Function Selection MC Motor For Compressor TABP1 P2 P Connection Terminal lt DC Voltage SWU1 Switch Unit Address Selection 1s digit MF1 MF2 Fan Motor 1 2 Connection Terminal lt DC Voltage SWU2 Switch lt Unit Address Selection 10ths digit gt 2154 Solenoid Valve lt Four Way Valve gt 052 053 Diode Bridge CNLVB Connector lt To N F Board CN52C gt 63H High Pressure Switch IPM Power Module Symbol of Board is CNLVB 63L Low Pressure Switch Noise Filter Circuit Board 55 Connector lt Connection For Option gt 63HS High Pressure Sensor LI LO Connection Terminal lt L Phase gt CN3D Connector lt Connection For Option gt 5 Solenoid Valve lt Bypass valve gt NI NO Connection Terminal lt N Phase gt CN3S Connector Connection For Option TH3 Thermistor Outdoor Pipe ELE2 Connection Terminal lt Ground gt CN3N Connector lt Connection For Option gt TH4 Thermistor lt Discharge gt 52C 52C Relay CN51 Connector Connection For Option TH6 Thermistor lt Low Pressure Saturated C B Controller Circuit Board LED1 LED2 LED Operation Inspection Display TH7 Thermistor lt Outdoor gt 5 1 Switch lt Display Se
44. 35 1 4 15 49 10m 33 ft 10m 33 ft 20m 66 ft At the conditions below The total length of each liquid line is as follows 99 52 3 8 A B C a 10m 10m 10m 15 m 45 m 33 ft 33 ft 33 ft 49 ft 148 ft 96 35 1 4 2 c d 10 m 10 20 m 40 m 33 ft 33 ft 66 ft 132 ft lt Calculation example gt Additional refrigerant charge 45 m x 0 06 kg 40 m x 0 024 kg 3 0 kg 0 7kg rounded up 148 ft x 0 041 Ibs 132 ft x 0 016 Ibs 6 6 Ibs 1 58 Ibs Header Branch Method Connection Examples Connecting to 4 Indoor Units Outdoor Unit First Branch Indoor unit Total Piping Length A a b c d 120m 394 ft Permissible E est Piping Length L A d 80 262 ft Length 9 Farthest Piping Length After First Branch 2 dis 30 meters 100 ft or less Permissible High High Low Difference in Indoor Outdoor Section H 30 meters 100 ft or less If the outdoor unit is lower 20 meters 70 ft or less Low Difference High Low Difference in Indoor Indoor Section h 12 meters 39 ft or less W Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Branch header 4 branches CMY Y64 G E Branch header 8 branches CMY Y68
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46. Before turning the power on Restriction of maximum frequency Enable Normal Ignore refrigerant filling abnormality Enable Normal Switching the target discharge pressure Pdm Enable Normal Switching 1 the target evaporation temperature ETm Enable Normal Switching 2 the target evaporation temperature ETm Enable Normal Can be set when off or during operation Initial settings ON OFF 12345678 SW7 Function switching Ignore current sensor abnormality Enable Normal Before turning the power on Forced defrost Forced defrost Normal During compressor running in heating mode Initial settings ON OFF 123456 SW8 Function switching Silent mode Demand Control Selection see next page Demand Control Silent mode Change of defrosting control Enable For high humidity 9f Normal Can be set when off or during operation Initial settings ON OFF 12 9 6 OUTDOOR UNIT INPUT OUTPUT CONNECTOR e State CN51 ceo ae m i Ec Y S CN51 o F tet Lag 99 3 UT i ial p 3 prt
47. C Select the size from the right table 18 or lower 24 to 54 3 Refrigerant Piping Diameter In Section From Branch to Branch Liquid Line mm inch 9 52 3 8 Gas Line mm inch 15 88 5 8 Additional refrigerant charge Additional Charge Refrigerant of 3kg 6 6 Ibs equivalent to 50m 165 ft total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m 165 ft or less there is no need to charge with additional refrigerant If the total extended piping length exceeds 50m 165 ft calculate the required additional refrigerant charge using theprocedure shown on the right If the calculated additional refrigerant charge is a negative amount do not charge with any refrigerant Additional refrigerant charge Liquid pipe size Total length of 9 52 x 0 06 kg 3 8 x 0 041 Ibs Liquid pipe size Total length of 96 35 x 0 024 kg 1 4 x 0 016 Ibs Refrigerant amount for outdoor unit kg Ibs m x 0 06 kg m ft x 0 041 Ibs ft m x 0 024 kg m ft x 0 016 Ibs ft 3 0kg 6 6 Ibs Example Outdoor model P48 Indoor P24 P15 P08 A 9 52 3 8 10 m 33 ft B 49 52 3 8 10 m 33 ft C 49 52 3 8 10 m 33 ft 9 52 3 8 46 35 1 4 46 35 1 4 46 35 1 4
48. Farthest Piping Length L Farthest Piping Length After First Branch A B C a b c d e is 120 meters 394 ft or less A B b is 80 meters 262 ft or less B b is 30 meters 100 ft or less 30 meters 100 ft or less If the outdoor unit is lower 20 meters 70 ft or less 12 meters 39 ft or less Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Permissible Length High Low Difference in Indoor Outdoor Section H High Low Difference in Indoor Indoor Section h W Selecting the Refrigerant Branch Kit Permissible High Low Difference Branch Joint CMY Y62 G E Branch Header 4 branches CMY Y64 G E Branch Header 8 branches CMY Y68 G E W Select Each Section of Refrigerant Piping 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Indoor Unit Piping Diameter Model number Piping Diameter mm inch Liquid Line 66 35 1 4 Gas Line 612 7 1 2 Liquid Line 49 52 3 8 Gas Line 415 88 5 8 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out door Unit Piping Diameter Model Piping Diameter mm inch PUMY P36 48 Liquid Line 49 52 3 8 Gas Line 15 88 5 8 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d e 3 Section From Branch to Branch B
49. board with a tester is difficult due to its location Test points are limited Check the voltage between M1 and M2 on the transmission terminal block TB3 24 30V DC gt Yes 5 Check breaker and incoming power supply IN CONG RS d Check noise filter board D Check wiring Yes 208 230V AC Disconnect the indoor outdoor transmission wiring from the terminal block TB3 and check the voltage between M1 and M2 on TB3 again 2 24 30V DC Yes No 24 30V DC Check wiring Correct the short circuit point on Replace transmission power board the M NET transmission line 24V 30V DC M NET transmission power board Multi controller board zi 8 3604 40 ONL LYW ONY AING 3 6 3814 158119 8 1231080 AJANILNOJ Noise filter 208 230V 4321 10 O 1 4 12 6 3 LI L1 21 CN102 lt CNS1 WHT CNAC1 WHT TB1 RED CN1 v vw 208 230V TB3 24V 30V DC Non polar 10 AC To Indoor Unit 65 9 8 HOW CHECK THE COMPONENTS HIGH PRESSURE SENSOR Vout V MULTI ut CONTROL
50. earth leakage breaker is installed it may cause an electric shock Do not use anything other than breaker and fuse with correct capacity Using fuse and wire or copper wire with too large capacity may cause malfunction of unit or fire 10 2 WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY 10 2 1 Wiring diagram for main power supply Breaker for Wiring and Current Leakage Power supply Outdoor unit Single phase 60Hz 208 230V Grounded Breaker for Wiring Pull box and Current Leakage Power supply single phase 60Hz 208 230V Indoor unit Grounded 10 2 2 Power supply wire diameter and capacity Minimum Wire Thickness Breaker Minimum Maximum rating Power Supply for Model Main Cable 2 Ground Wiring 1 Breaker for Current circuit of over current Leakage ampacity protector device Outdoor Unit P36 P48 N single 60Hz 208 230V 5 3 AWG10 5 3 AWG10 30A 30A30mA0 1 sec less 26A 40A Indoor Unit N single 60Hz 208 230V Refer to installation manual of indoor unit 1 A breaker with at least 3 0mm contact separation in each poles shall be provided Use earth leakage breaker NV 2 Use copper supply wires Use the electric wires over the rating voltage 300V 81 10 3 DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI S series will depend on the remote controllers and
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52. failure in the indoor controller board Check whether the connector CN20 in the indoor controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor OC 82 F 15kQ 10 C BO F 9 6 20 C 68 F 30 C 86 F 40 1049 3 0kQ When there is no problem in above mentioned 4 29 replace the indoor controller board Discharge temperature thermistor TH4 When controller detects short open in thermistor during the operation the outdoor unit stops once and restarts operation 3minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts When controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time 5101 is displayed For 10 minutes after starting compressor for defrosting or for 3minutes after recover of defrosting above mentioned short open are not detected Short 216 C 421 F or more 1 Open 0 C 32 F or less 700kQ Note When outer temperature thermistor TH7 is 5 C 41 F or less on cooling open detecting is not determined as abnormality Connector TH4 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure Check whether the connector TH4 in the multi co
53. of 6 35 x 0 024 kg 1 4 x 0 016 Ibs Refrigerant amount for outdoor unit kg 105 m x 0 06 kg m ft x 0 041 lbs ft m x 0 024 kg m ft x 0 016 Ibs ft 3 0kg 6 6 Ibs lt Example gt Outdoor model P48 Indoor 1 P24 A 9 52 3 8 30 m 98ft 2 P15 15m 10m 10m 20m a 29 52 3 8 b 66 35 1 4 3 66 35 1 4 4 d 6 35 1 4 The total length of each liquid line is as follows 4 9 52 A a 30 15 45 m 98 ft 49 ft 147 ft 6 35 10 10 20 m 40 m 33 ft 33 ft 66 ft 132 ft Calculation example Additional refrigerant charge 45 m x 0 06 kg 40 m x 0 024 kg 3 0 kg 0 7kg rounded up 147 ft x 0 041 Ibs 132 ft x 0 016 Ibs 6 6 lbs 1 54 Ibs 491 33 ft 33 ft 66 ft At the conditions below 85 Note The total of downstream unit models in the table is the total of models as seen from point Ain the figure above O E I se O Outdoor unit First branching branching joint Branching joint Indoor unit Branching header To downstream unit Blind caps Note Pipe re branching after the header branching is not possible s Method of Combined Branching of Lines and Headers Connection Examples Connecting to 5 Indoor Units Total Piping Length
54. of operation on On Ambient Increase Stage 3 7 lt 0 Auxiliary heating only Outdoor unit is OFF Stage 2 TH7 gt 0 to 20 Auxiliary heating with Outdoor unit in HP mode Stage 1 7 gt 20 Outdoor unit in HP mode only 6 Locally procured wiring A basic connection method is shown i e interlocked operation with the electric heater with the fan speed setting on high Nm Indoor unit Outdoor unit Remote control Board Relay circuit Adapter control board control board pes cm 11 Dip switch 5 1 SW4 4 ON leo 25 i E lg EE X me Electric Heater Dp Preparations in the field Maximum cable length is 10 m 321 For relay X use the specifications given below Operation coil Rated voltage 12VDC Power consumption 0 9W or less the diode that is recommended by the relay manufacturer at both ends of the relay coil The length of the electrical wiring for the PAC YU24HT is 2 meters 6 1 2 ft To extend this length use sheathed 2 core cable Control cable type CVV CVS CPEV or equivalent Cable size 0 5 mm 1 25 mm AWG22 to AWG16 Don t extend the cable more than 10 meters 32ft Recommended circuit 88H H1 R 20 8 1 s supply 88H FS2 ae 208V 230V 60Hz So s 00 40 7 FS1 2 Thermal f
55. reference Symptom when the unit is in trouble and lo less than 10 The unit does not operate can not be switched ON short 100kQ 1 The breaker operates open does not operate can not be sw 0 Abnormal stop 9 10 No 189 ACTM error d P and L2 100 1MO breaker operates an it does not operate can not be swit 0 Abnorma 10 No 189 ACTM error di P and I 100 1MQ breaker operates pire 9 The unit does not operate can not be swit 0 Abnormal stop 9 10 No 189 error di 100 1MO breaker operates L2 and lo 5 ATI P open does not operate can not be swit 0 Abnormal 10 No 189 ACTM error d x The symptom when the unit is in open error condition is described to determine open error by tester check 73 ON Bu 89 15 Jequinu JSOMO y sseJppe eui HEJS M ON eu 5 992 0 uun 504 epoo 126087 00011110 100 oN 9009 1126087 00011101 uun 1000204 12087 00011100 204 112087 00011011 0 epoo 12087 00011010 101401 440 oway 101401 NO oway uomneJedo pun g oy uomeJedo yun 10 neado jun 9 ON
56. the remote controller MA remote controller is not fed The remote controller is not fed until the power supply of both indoor unit and outdoor unit is on and the start up of both units is finished normally The power supply of the indoor unit is not on The power supply of the outdoor unit is not on The number of connected remote controller is over the limit Maximum 2 units or the number of connected indoor unit that is over the limit Maximum 16 units The address of the indoor unit is 00 and the address for the outdoor unit is the one other than 00 The transmission line of the indoor outdoor unit is connected to TB15 MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller cable is shorted or down The power supply cable or the transmission line is shorted or down The fuse on the indoor unit controller board is blown PLEASE WAIT keeps being dis played or it isdisplayed periodically PLEASE WAIT is usually dis played about 3 minutes after the power supply of the outdoor unit is on The power supply of the outdoor unit is not on The power supply of the feeding expansion unit for the transmission line is not on The setting of MA remote controller is not main remote controller but sub remote controller MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller does n
57. whether they are linked with the system 10 3 1 Selection number of control wires M NET remote controller Remote controller used in system control operations Use Group operation involving different refrigerant systems Linked operation with upper control system Remote controller indoor unit Wires connecting indoor units 1 2 wires non polar Wires connecting indoor units with outdoor unit ransmission Wires connecting outdoor units 10 3 2 Control signal wires e Transmission wires Types of transmission cables Shielding wire CVVS or CPEVS Cable diameter More than 1 25mm AWG 16 Maximum wiring length Within 200 656 ft 10 3 3 M NET Remote controller wiring Kind of remote control cable Shielding wire MVVS Cable diameter 0 5 to 1 25mm AWG 20 to AWG 16 Remarks When 10m is exceeded use cable with the same specifications as 10 3 2 Transmission line wiring 10 3 4 MA Remote control cables Kind of remote control cable 2 core cable unshielded Cable diameter 0 3 to 1 25 m AWG 22 to AWG 16 10 4 SYSTEM SWITCH SETTING In order to identify the destinations of signals to the outdoor units indoor units and remote controller of the MULTI S series each microprocessor must be assigned an identification number address The addresses of outdoor units indoor units and remote controller must be set using their settings switches
58. within the same group plus 150 Sub Remote Controller 191 to 200 d Use the indoor unit IC within the group with the most functions as the IC Main unit Combinations of 1through 3 above are possible 26 Name Symbol and the Maximum Remote controller Units for Connection Name Maximum units for connection Outdoor unit Indoor unit One OC unit can be connected to 1 6 P36 1 8 P48 IC units M NET remot CORDE Maximum 2 RC for 1 indoor unit Maximum 16 RC for 1 OC Permissible Lengths Prohibited items Longest transmission cable length M NET remote controller RC and MA remote controller MA cannot be used together 1 25 mm AWG16 Do not connect anything with TB15 of indoor unit IC L1 L2 L2 L3 L3 L1 200m 6561 Remote controller cable length 1 If 0 5 to 1 25 AWG20 to AWG16 1 2 S10m 33 2 If the length exceeds 10 meters 331 the exceeding section should be 1 25 mm AWG16 and that section should be a value within the total extension length of the transmission cable and maximum transmission cable length L3 Same as above Use the indoor unit IC address plus 150 as the sub remote controller address In this case it should be 152 Three or more remote controller RC cannot be connected to 1 indoor unit TB7 Same as above 01 02 TB5 7815 TB5 15 The remote controller addres
59. 001100 yjeuuouqe w 105496 11001011 euim 108495 LLOOLOLO PLP PIP yjeuuouqe eum 40sues PHL 11001001 Aypeunuouge ye 105495 1559 4 4 11001000 euin ye A31 pue AIS 100pino jo esind Kejdsiq 0002 0 02 0 Kyjeuuouqe je A31 GII 11000111 w Buiuedo A31 VAI 11000110 Ayyeuuouge aul A31 29 11000101 w A31 291 11000100 Kypeuuouqe aul A31 191 11000011 ypeuuouqe deis uey 10 e dsiq 69 60 49 44 0 Aypeuuouqe deis uey 11000001 Ayyewuouge ye jo Aejdsig Ayyeuuouge w ye AouenboJ enjoy 000000 uoneuuoosip Japun 105158 10181 1043 OZZY 10111101 00 81 Sc INOW Sc 00 SL 00 90 00 90 08 00 81 90 LAS 202 0 91 9 08 4 0 9 8 X3 dog 30 89 0 08 2 26 4 01 3 015 gt 85 01 pue 2 6 10 4o 0L5P gt 9 gt G gt 85
60. 0110 HS OS 921 11100101 2S 100pino pue 10 51 eunsseJd uDiu eyep Kejdsiq 0 52 s 1i pe1oeuuoo s uauM 6 666 6 66 LZHL 821 11100100 11100011 991 11100010 pinbr zzH L 801 11100001 11100000 Oo Oo 291 Oo Oo Oo pinbr zeH L 99 11011111 8 9 6 1 801 11011110 pinbiq 2zHL 20 D 8 5 68 1 7 21 LLOLLLOL 2 SBD EZHL 901 11011100 400pu pue Ad TS Joopino asjnd Buiuedo jo Aejdsiq Buiuedo A31 891 LLOLLOLL asind Buiuedo A31 29 11011010 asind Buiuedo A31 991 11011001 jo ejdsiq 330 330 oway oway oway buooo 89 LLOLLOOO 71 11010111 99 LLOLOLLO apow Ajoedeo yun ejdsiq opoo Aoede 89 LLOLOLOL epoo Ayoedeg LLOLOLOO Ayoedey 971 LLOLOOLL SO ON 9 eyep z uo e dsiq 8299722 LMS 10 ELECTRICAL WIRING This chapter
61. 1 4 10 9 12 6 32 000 35 900 2 70 2 57 11 9 11 3 13 2 33 000 37 000 2 82 2 66 12 5 11 7 13 8 34 000 38 200 2 95 2 75 13 0 12 1 35 000 39 300 3 08 2 84 13 6 12 5 36 000 40 000 3 22 2 93 14 2 36 200 40 200 3 23 2 92 14 3 36 400 40 400 3 25 2 89 14 3 36 600 40 700 3 26 2 86 14 4 36 900 40 900 3 27 2 84 14 5 37 100 41 100 3 28 2 81 14 5 37 300 41 300 3 30 2 78 14 6 37 500 41 600 3 31 2 75 14 6 37 700 41 800 3 32 2 72 37 900 42 000 3 34 2 69 38 100 42 200 3 35 2 66 Note In some combination patterns numerical value of the heating data may differ slightly CAPACITY about several hun dred Btu h 13 5 2 2 PUMY P48NHMU NHMU NHMU x BS Total capacity Capacity Btu h Power Consumption kW Current A 230V Current A 208V of Indoor Cooling Heating Cooling Heating Cooling Heating Cooling Heating 24 000 26 900 2 11 2 32 9 2 10 2 10 2 11 2 dred Btu h Note In some combination patterns numerical value of the heating data may differ slightly CAPACITY about several hun 14 5 3 CORRECTING COOLING AND HEATING CAPACITY 5 3 1 Correcting Changes in Air Conditions 1 The performance curve charts Figure 1 2 s
62. 1910 PEJS kejap Ayeuuouqe SHE9 Aieuuouqe ojnsseJd wo1 Aejap Ajjeuuouge Josuas JUANI kejap Aueuuouqe junoure iuejefije jueroyinsu kejap Kejap z Auoysiy Kejap Aypeuuoudy 00001001 kejap Ayyewuouge 101092 JUAN 1910 PEJS kejap jeuuouqe ZHL kejap uewsouge 10091001 uej 100pNO kejap Ayrewuouqe 1 Aejap yjeuuouqe kejap einje1duie aByeyosiq kejap Aejap Ayyeusouqe eunyelecluay einsseJd uBiH 101914 Aejap Aypeuuouqy 00001000 Aejap Kyjeuuouqe ur senieuuouqe je Aejdsiq kejep Ryeuuoqe quvog uaMod uoneoiunuiuoo Aejap uous uedo Josues Juang kejap 9HL kejap Ayjeuuouge ainpow kejap 101991010 192014 Aejdsip Aejap Aueuuougy 0000011 kejap yjeuuouge uordeo 110110 1910 PEJS kejap I euuouge SHE9 Aejap Ayjyewsouge 9 15609 4 01 kejap 108495 Juang Aljewuouge 118100 kejap kejap uondeojejul jue uno yulsyeoH c Aejdsip Ajyeuuougy 00000110 kejap Ayewsouge 101099 01119100 1910 PEJS kejap iewouqe ZHL kejap Ay
63. 46 01 Je p LOLLLLOO 4 9 10111011 324 dwa 10111010 42 Buneeu 10111001 p 6do gdo 2 00 900 q gdo pdo e gdo zdo 4 10 23 0071do 815110 40 0 NO 1 2 5 1deox3 2 02 2 01 2 9 029 221 8 enlu gt 0 2 pue 10 2 07 gt 2 gt 4 gt 62221 10111000 9 9 Buneeu 10110111 2 4 Buneeu 10110110 9 2 dwe Bunjes LOLLOLOL JO SIWJ9Y edid pinbi Jo 5 22 52 s 1 jou s Joopur ueuM 4 6 666 6 66 pinbr1 801 10110100 pinbr1 401 10110011 pINDIT 901 10110010 do pinbr1 901 10110001 PINDIT 10110000 10101111 SO ON e dsiq fejdsip z uo fejdsiq 82968681
64. 82 01001001 asind A31 21 01001000 asind A31 29 01000111 asind BuiuedQo A31 29 01000110 esind A31 LOI 01000101 198161 64915 Jequunu ejdsiq 81 0 002 deis 0409 ue u33 010000 Jaquinu dajs 01000010 19646 jo Aejdsiq 99 0 01000001 jense jo Aejdsiq 91 44 0 jeuoneJedo 01000000 SO ON 9 6 Aejdsip 2410131 uo Aejdsiq e dsiq 8299762 Dunes LMS 76 Jo eun ye A37 400 pue AgS 100pjno asjnd Buiuedo ejdsiq 0006 0 Aejap Ajpeuuouqe asind A31 621 L00001LL Aejap Ajpeuuouge A31 72 10000110 Aejap esind Buiuedo A31 62 10000101 Aejap A31 ZII 10000100 Aejap Ajpeuuouge A31 191 100000 kejap jo Jaquinu days ue Aejdsiq 81 0 Aejap euin ye saquinu 4915 ugy 10000001 kejap Ayjewuouge jo ye Auanbay penya jo fejdsiq anissasBoud 91 44 0 Ae
65. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS July 2008 No OC366 REVISED EDITION C HFC utilized R410A TECHNICAL amp SERVICE MANUAL Model name Service Ref eee ty PUMY P36NHMU has been modified PUMY P48NHMU PCB FAN MOTOR PUMY P48NHMU PUMY P48NHMU2 REVISED EDITION B Salt proof type PUMY P36NHMU BS PUMY P48NHMU BS PUMY P36NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS 5 5 1 TECHNICAL CHANGES enne 2 2 SAFETY PRECAUTION nnns 5 3 OVERVIEW OF UNITS nnns 8 4 SPECIFICATIONS nennen 10 12 6 OUTLINES AND 18 7 WIRING DIAGRAM nnn nnne 20 8 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 24 9 TROUBLESHOOTING nnns 34 10 ELECTRICAL 81 11 REFRIGERANT PIPING 84 1 12 DISASSEMBLY 88 Modellname 190 PARTS LIST 93 S NE indication 14 RoHS PARTS LIST 96 15 OPTIONAL PARTS enne nn nnns 99 NOTE This service manual describes te
66. D R01 E06 TOP PANEL R01 E00 HANDLE PUMY P48NHMU o T 2 z I Z gt 2 o 2 z I Z a gt 2 13 2 FUNCTIONAL PARTS PUMY P48NHMU Grup NS VE HRA ARIS 2 212311 y 7 e SAN Z8 9 20 SC E LY Ve VN NS ALE Y ct 94 Part numbers that are circled are not shown in the figure Part No Part Name Specification Q ty set PUMY P48NHMU PUMY P48NHMU1 BS Remarks Drawing No Wining Diagram Symbol Recom mended E44 FAN MOTOR 2 MF1 2 E01 PROPELLER FAN E02 NUT E07 CHARGE PLUG 2 2 2 410 COMPRESSOR ANB33FDCMT Including RUBBER MOUNT E04 STOP VALVE 3 8 E06 BALL VALVE 5 8 E03 STRAINER E35 ACCUMULATOR E02 OIL SEPARATOR E22 CAPILLARY TUBE 92 5 0 8 1000 10 3 32 d 1 32 L 39 1 2 inch E04 H P SENSOR 63HS 25T LOW PRESSURE SWITCH 63L E03 BYPASS VALVE E17 SOLENOID COIL lt BYPASS VALVE gt SV1 E18 SOLENOID COIL 4 WAY VALVE gt 2154 205 4 WAY VALVE E75 THERMISTOR TH6 7 E05 HIGH PRESSURE SWITCH 63H E29 HEAT EXCHANGER E02 CONTACTOR 52C 850 T
67. E When the outdoor unit detects No ACK error No responsive frame error an object indoor unit is treated as a stop and not assumed to be abnormal Self diagnosis function The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch SW1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF During normal operation The LED indicates the drive state of the controller in the outdoor unit Bit 1 Example When the compressor and SV1 are turned during coolinc operation 1 23 4 7 a Compressor operated Indication O1 6 1 1 Co gt 0 Display Abnormal point and detecting method Causes Check points 1102 High discharging temperature Abnormal if discharge temperature thermistor TH4 exceeds 125 C 257 F or 110 C 230 F continuously for 5 minutes Abnormal if pressure detected by high pressure sensor and converted to saturation temperature exceeds 40 C 104 F during defrosting and discharge temperature thermistor TH4 exceeds 110 C 230 F Over heated compressor operation caused by shortage of refrigerant Defective operation of stop valve Defective thermistor Defective outdoor controller board Defective action of linear expansion valve Check intake supe
68. ERMINAL BLOCK 3P L1 L2 GR TB1 E14 NOISE FILTER CIRCUIT BOARD N F H76 MULTI CONTROLLER CIRCUIT BOARD MULTI B E17 TERMINAL BLOCK 3P M1 M2 S TB3 TB7 E01 TRANSMISSION POWER BOARD M P B E01 RESISTOR RS E09 REACTOR DCL E26 POWER CIRCUIT BOARD P B E01 ACT MODULE ACTM E09 MAIN SMOOTHING CAPACITOR CB THERMISTOR OUTDOOR PIPE TH3 THERMISTOR DISCHARGE TH4 THERMISTOR HEATSINK 95 14 d d lt 1 lt lt lt lt lt lt lt lt lt lt TH8 RoHS PARTS LIST 14 dj Ser AS d Se Se NS E ANT 15 552 UTERE mS TT NW 7 ky NY Ve 16 2 fra DEES PUMY P48NHMU 14 1 FUNCTIONAL PARTS PUMY P36NHMU BS PUMY P48NHMU PUMY P36NHMU Part numbers that are circled not shown in the figure Part No Part Name Q ty set Specification PUMY P36NHMU BS PUMY P48NHMU BS Remarks Drawing No Wining Diagram Symbol Recom mended Q ty T7W E27 FAN MOTOR 2 MF1 2 R01 E08 PROPELLER FAN R01 E09 NUT OO RoHS T7W E07 CHARGE PLUG 2
69. G E W Select Each Section of Refrigerant Piping 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d Select the size from the right table 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Indoor Unit Piping Diameter Model number Piping Diameter mm inch Liquid Line 46 35 1 4 Gas Line 412 7 1 2 Liquid Line 99 52 3 8 Gas Line 415 88 5 8 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out door Unit Piping Diameter Model Piping Diameter mm inch PUMY P36 48 Liquid Line 9 52 3 8 Gas Line 15 88 5 8 18 or lower 24 to 54 Additional refrigerant charge Refrigerant of 3kg 6 6 Ibs equivalent to 50m 165 ft total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m 165 ft or less there is no need to charge with additional refrigerant If the total extended piping length exceeds 50m 165 ft calculate the required additional refrigerant charge using the procedure shown on the right If the calculated additional refrigerant charge is a negative amount do not charge with any refrigerant Additional Charge Additional refrigerant charge Liquid pipe size Total length of 99 52 x 0 06 kg 3 8 x 0 041 Ibs Liquid pipe size Total length
70. GERANT PIPING TASKS 11 1 REFRIGERANT PIPING SYSTEM Si A Line Branch Method Connection Examples Connecting to 4 Indoor Units mte e i Outdoor Unit First Branch Indoor unit Total Piping Length Farthest Piping Length L Farthest Piping Length After First Branch 2 Permissible High High Low Difference in Indoor Outdoor Section Low Difference High Low Difference in Indoor Indoor Section h W Selecting the Refrigerant Branch Kit W Select Each Section of Refrigerant Piping 120m 394 ft A B C d 80m 2621 B C d 30m 100ft 30 meters 100ft or less If the outdoor unit is lower 20 meters 701 or less 12 meters 39ft or less Use an optional branch piping kit CMY Y62 G E 1 Refrigerant Piping Diameter In Section 2 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch From Branch to Indoor Unit Outdoor Unit Piping Diameter Indoor Unit Piping Diameter Model Piping Diameter mm inch Model number Piping Diameter mm inch Liquid Line 99 52 3 8 Liquid Line 26 35 1 4 Gas Line 915 88 5 8 Gas Line 412 7 1 2 Liquid Line 29 52 3 8 Gas Line 415 88 5 8 Permissible Length 1 Section From Oudoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d 3 Section From Branch to Branch B C
71. LER BOARD 2 5 MICRO COMPUTER SENSOR 0 5 up 5V DC a Output Vout DC PRESSURE Thermistor feature chart 50 Low temperature thermistors Thermistor Outdoor pipe TH3 Thermistor Low pressure saturated temperature TH6 40 Thermistor Outdoor TH7 Thermistor RO 15kQ 3 27 B constant 3480 2 5 1 1 820 Rt 15 3480 t 15exp 57 4 273 t C F 32 1 8 OC 32 F 15kQ30 C 86 F 4 3kQ 10 C 50 F 9 6kQ40 C 104 F 3 0kQ 10 20 C 68 F 6 3 25 C 77 F 5 2 0 20 10 0 10 20 30 40 50 4 14 32 50 68 86 104122 F Temperature 200 Medium temperature thermistor Heatsink temperature thermistor TH8 150 Thermistor R50 17kQ 2 4170 3 54 1 1 4 5 Rt 17exp 4170 C F 100 5534 323 E EIR tc 0 C 32 F 180 25 C 77 F 50kQ 50 C 122 F 17 50 70 C 158 F 8 90 C 194 F 4kQ 5 25 50 75 100110125 C 77 122 167 212 230 257 F Temperature 500 High temperature thermistor Thermistor lt Discharge gt TH4 Thermistor R120 7 465kQ 2 B constant 4057 2 1 1 273 41 393 1 32 1 8 400 300 Rt 7 465exp 4057 Resistance KQ e 20 68
72. OISE NOISE i O 10 E F 10 T 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz BAND CENTER FREQUENCIES Hz MICROPHONE 1m 3 3 UNIT 1 5m 4 9ft GROUND 17 gt 18 PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS o c gt lt lt gt N iN E Gs Fees ET une 916 UP 49164269 58 6 5 gt 26 N 2 x qnoyoouy 5 o m 1 amp lt B S E gt 26 B 9UEZ 96 976561 dE 5 noia lt 26 61 2 gt 04 gt e 3 8 95 Ea s c S 2916 1508 26 2 d NE R 9 8 100 000 amp T 52 E
73. Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit and its outdoor unit in same refrigerant system Forced outdoor unit stop cannot be released by remote controller OFF NOTE Above mentioned 0 9 and 0 are detected independently Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Water drops on drain sensor Drops of drain trickles from lead wire Clogged filter is causing wave of drain Defective indoor controller board Both of above mentioned and the indoor linear expansion valve full closed failure leakage happens synchronistically Note Address Attribute displayed on the remote controller shows the indoor unit which is cause of trouble 40 Check if drain up machine works Check drain function Q Check the setting of lead wire of drain sensor and check clogs of the filter Replace indoor controller board when there is no problem in the above mentioned O Check whether the indoor linear expansion valve leaks or not Abnormal point and detecting method Causes Check points Drain pump DP Judge whether the sensor is in the water or in the air by turning the float switch ON OFF In the water Detected that the float switch is ON for 15 seconds In the air Detected that the float switch is OFF for 15 seconds When the float switch remains to be turned ON for 3 minutes after detected t
74. UN lt 8 gt 8 8 lt 8 EM gt 0 HN 5 NOILWONNO4 82 96 21 2 p o 23 LLI 8 lt gt ko 2 o mc 8 AE 3384 E n 95 os E Pg 2 1 TUM SHE OPIS peseuound eq 93 1 m pue snw pue 108 5104 ay 5 S seep jo 4 I lt 8 gt LIN uorepunoj SSIM 92IAIGS 10 21584 STO suonoeuuoo pue uuy pun eui aindas asea q eoeds smoys 941 lt 8 9 gt lt 8 9 gt SL 821 5 019340 9 1 7 51108 30795 38 2 un 30785 3383 lt 8 6 gt 0 LN ejou peuojou pedeus N Z gt
75. W4 4 when power is turned off at unit OFF Disable Primary Heating Function Initial setting ON Enable Primary Heating Function 3 Determine required Indoor Fans Speed during defrost mode a With no Primary heating output the Indoor fan normally goes off to prevent cold drafts during the defrost cycles b With Primary heating control the auxiliary heat will be on during defrost mode thus cold drafts will not be present Ducted units only For models PEFY and PDFY Ducted recommended to use Black 20K connector d For models PLFY PCFY PKFY and PFFY Ductless recommended None no connector required To set the fan airflow rate to be used during defrost operation insert the resistance that is packed within the optional adaptor cable kit PAC YU24HT F into the CN22 sensor input You can choose at what speed the indoor fan operates during defrost cycles bases on chart below Fan airflow rate setting During defrost operation ON CN22 input resistance Q I CN22 input cable ml E EE NE EE EE m CN22 Input plug Setting on FAN SPEED SETTING Stopped remote Very Low High controller Note The setting will be disabled when Heater contact signal is OFF 2 4 Determine Fan Airflow setting during Indoor Thermo OFF conditions a These settings are done within Indoor DIPSW1 7 and DIPSW1 8 see chart below for options b Recommended SW1 7 OFF and SW1 8 ON will determine airflow based on Setting on the remot
76. age 9 Looseness disconnection or converse of compressor wiring connection 0 Defective compressor Defective outdoor power circuit board 42 Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board Check compressor amp Replace outdoor power circuit board Contimued on the next page Abnormal point and detecting method Causes Check points 2 Compressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds Over current 27 5A Stop valve of outdoor unit is closed Decrease of power supply voltage 9 Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units amp Defective input circuit of outdoor controller board Defective compressor D Open stop valve Check facility of power supply 9 Correct the wiring U V W phase to compressor Outdoor power circuit board Check indoor outdoor fan Solve short cycle Replace outdoor controller circuit board 2 Check compressor Before the replacement of the outdoor controller circuit board disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases U V W during test run SW7 1 ON No defect on board if
77. all power switch to on for test run Perform test run according to the Operation procedure table of the bottom of this page While test running make test run reports 5 When you deliver the unit after test run instruct the end user for proper usage of the system using owners manual and the test run report you made to certificate normal operation If abnormalities are detected during test run refer to 9 1 3 Countermeasures for Error During Test As for DIP switch setting of outdoor unit refer to 9 5 INTERNAL SWITCH FUNCTION TABLE M NET Remote controller Check code indicator see NOTE 1 Test run remaining time indicator see NOTE 2 ate MITSUBISHI ELECTRIC Indoor unit liquid pipe temperature indicator 3 Display panel TEST RUN indicator CEST AUN DONOFF ON OFF LED Lights up in operation Cooling Heating CO ex ON OFF button OPERATION O B 0 rer SWITCH button AIR DIRECTION button Coo TEST RUN button N LOUVER button AIR SPEED button Control panel Operation procedure Turn on the main power supply of all units at least 12 hours before test run HO appears on display panel for 3 min 12 hours later press TEST RUN button twice to perfo
78. bends in the piping Length of piping to farthest indoor unit 80m 2621 5 3 3 Correction of Heating Capacity for Frost and Defrosting If heating capacity has been reduced due to frost formation or defrosting multiply the capacity by the appropriate correction factor from the following table to obtain the actual heating capacity Correction factor diagram Outdoor Intake temperature W B F Outdoor Intake temperature W B C Correction factor 16 5 4 NOISE CRITERION CURVES PUMY P36NHMU BS MODE SPL dB LINE PUMY P48NHMU BS MODE SPL dB LINE LIN 4 coole 4 o e PUMY P48NHMU BS 0086 50 51 o e HEATING 52 oe PUMY P48NHMU x BS 90 90 1 5 1 8 3 3 in 8 8 80 8 80 i S un a 1 a 70 70 2 e NC 70 m T E _ 60 d 60 p i 50 50 2 5 o o 0 hi 40 40 a a a z 5 9 30 INC 30 T F F 3 lt i i 1 F 2 20 APPROXIMATE j E 20 4 1 P HEARING FOR 27 E HEARING FOR INC 20 CONTINUOUS jNC 20 amp CONTINUOUS N
79. ble TH8 Check delay code 1214 5201 Pressure sensor trouble 63HS Check delay code 1402 5300 Curnent sensor trouble O Check delay code 4310 5701 Contact failure of drain float switch 6600 Dupricated unit address setting O O Only M NET Remote controller is detected Transmission error 6602 processor hardware enon Only M NET Remote controller is detected 6603 Transmission error Transmission route BUSY O O Only M NET Remote controller is detected Transmission and reception error B 9808 Communication trouble with transmission processor 31 2622 Any MAET elected 6607 Transmission and reception error ACK error Q Only M NET Remote controller is detected 6608 and reception error M NET Remote controller is detected No responsive frame error 6831 MA communication receive signal error Only MA Remote controller is detected no receive signal commnication send signal error 6832 bif derectiorterfar Remote controller is detected 6833 MA commnication send error H W error Q Only MA Remote controller is detected _ MA commnication receive error Q Only MA Remote controller is detected Synchronous recovery error 7100 Total capacity error Q 7101 code error 010 7102 Connecting unit number error 7105 Address set error Q 7111 Remote controller sensor trouble Q NOT
80. buttons on the remote controller and hold for 2 seconds to return to the normal mode 3 Clearing an address Refer to section 1 regarding the address entry and section 2 regarding checking addresses a In making group settings Turn off the remote controller The procedure is same as a in 2 Address check Put in the indoor unit address display mode The procedure is same as a in 2 Address check Displaying the indoor unit address to be cleared The procedure is same as a in 2 Address check e Clearing indoor unit address Pressing the 85 8 button on the remote controller twice will clear the address entry of the displayed indoor unit resulting in the display shown in Figure 6 The display shown in Figure 7 will appear if an abnormality occurs and the entry is not cleared Please repeat the clearing procedure Returning to the normal mode after clearing an address The procedure is same as a in 2 Address check Figure 6 Display after address has been Figure 7 Display when an abnormality cleared normally has occurred during clearing INDOOR UNIT INDOOR UNIT ADDRESS NO ADDRESS 7 will appear in the room temperature 88 will appear in the room temperature display location display location b In making paired settings Turn off the remote controller The procedure is same as b in 2 Address check Put into the
81. check 2 Check the fuse on Multi controller board Did the fuse F500 blow No Did the fuse F1 and F2 blow No 7seg LED is lit Yes blow Replace Multi board and fan motor See DC fan check Yes blow 28 Check the SV1 and 2154 and No lit SW all off Yes lit C Normal Check the voltage from the power board to CNDC PNK connector No Check the breaker and main incoming power Check noise filter board Check wiring 280V to 350V DC Yes Check wiring Replace multi controller board PNK Multi controller board SER x1 SERI Power circuit board Le rii bl 280 350V DC 6277 3 conv 1 circuit CNDC PNK NO LO F500 208 230V 10 AC CNAC RED 208 230V 10 AC ise filter circui CNACA RED 2082800 2 T H LI 4 1 NO 4 Ni ag 12 10 2 1 61 Check method of power board To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited Is the voltage of main incoming power No 208 230V AC 4 Check the b
82. chnical data of out AWTERTE door unit 3 As for indoor units refer to its service manual RoHS compliant products have lt G gt mark on the spec S ISTED 1 TECHNICAL CHANGES PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU BS Compressor MC and oil have been changed ANB33FDCMT Ester MEL56 gt ANB33FDHMT Ether oil FV50S Electrical parts have been changed Multi controller board MULTI Noise filter circuit board N F Active filter module ACTM Relay 52C Resister RS including N F PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS J PUMY P48NHMU BS Primary heating ON OFF control has been added 1 1 PRIMARY HEATING ON OFF CONTROL SET UP 1 Primary heating operation controls another heat source that depends on the main system s operations which means the interlock operation shown in c will be possible a Service ref PUMY P48NHMU BS does not have this function b Indoor unit must be R410A UL model for this function to operate Note Following Indoor models DO NOT HAVE this feature available PMFY PO6NBMU PMFY P12NBMU PKFY PO6NAMU PMFY PO8NBMU PMFY P15NBMU PKFY PO8NAMU c Different Indoor unit applications that can be applied PLFY PKFY PDFY PEFY Electric Heating Hot Visier 2 Outdoor unit DIPSW4 4 for Primary Heating Control Set DIPS
83. city To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit first add up the ratings of all the indoor units connected to the outdoor unit see table below and then use this total to find the standard capacity with the help of the tables on 5 2 STANDARD CAPACITY DIAGRAM 1 Capacity of indoor unit Model Capacity 2 Sample calculation System assembled from indoor and outdoor unit in this example the total capacity of the indoor units is greater than that of the outdoor unit Outdoor unit PUMY P48NHMU Indoor unit PKFY PO8NAMU E x 2 PLFY P18NLMU E x 2 to the conditions in the total capacity of the indoor unit will be 8 x 2 18 x 2 52 following figures are obtained from the 52 total capacity row of the standard capacity table 5 2 Capacity Btu h Outdoor unit power consumption KW Outdoor unit current A 230V Cooling Heating Cooling Heating Cooling Heating 4 48 900 54 500 5 01 4 71 21 9 20 6 5 1 2 Method for obtaining the heating and cooling capacity of an indoor unit 1 The capacity of each indoor unit Btu h the capacity or B x model capacity total model capacity of all indoor units 2 Sample calculation using the system described above in 5 1 1 2 During cooling The total model capacity of the indoor unit is 8000 x 2 18000 x 2 52000Btu h Th
84. compressor Outdoor power circuit board P48NHMU BS Replace 52C PS6NHMU P48NHMU BS Replace noise filter circuit board Including 52C Replace ACT module Refer to 9 9 Test point the item of ACTM Check 5 wiring on the outdoor power circuit board amp Replace outdoor power circuit board Check 2 wiring on the outdoor power circuit board Replace outdoor power circuit board Check CNAF wiring The 4220 error history can be confirmed 12345678 with SW1 No 189 m Refer to 9 9 Test point the item of ACTM In PUMY models bus voltage is controlled using ACTM If ACTM is failed bus voltage becomes uncontrollable and stops abnormally To check the normality of operation see DC bus voltage SW1 9 10 No 45 or determine DC bus voltage of the both sides of condenser C510 or CNDC connector which is on Multi controller board using a tester Self check switch No 45 SW1 10110100 Tester check The voltage DC of the condenser C510 or CNDC connector which is on Multi controller board 2 Check the voltage ACTM condition DC bus voltage Normal Target voltage 340 350V DC Failure no operation Less than 310V DC or over 400V DC Caution Determine the voltage for 10 seconds after the compressor has operated ACTM does not operate when the compressor is stopping Including constraint electric continuity and for 10 seconds after the compre
85. concentration of R410A O 3kg mre 0 019lbs ft3 KHK installation guidelines S0010 Outdoor unit Direction of refrigerant flow Indoor unit All refrigerant of this system will leak out to this room if there is leakage at this indoor unit 11 2 2 Confirming procedure of R410A concentration Follow 1 to 3 to confirm the R410A concentration and take appropriate treatment if necessary 1 Calculate total refrigerant amount by each refrig erant system Total refrigerant amount is precharged refriger ant amount at ex factory plus additional charged amount at field installation Note When single refrigeration system is consists of several independent refrigeration circuit figure out the total refrig erant amount by each independent refrigerant circuit 87 2 Calculate room volumes and find the room with the smallest volume The part with represents the room with the smallest volume a Situation in which there are no partitions Outdoor unit Indoor unit b There are partitions but there are openings that allow the effective mixing of air Outdoor unit Situation in which there are no door openings or in which there are open ings above and blow doors that occupy at least 0 1596 of the floor area Indoor unit Opening c If the smallest room has mechanical ventilation apparatus that is linked to a household gas detection and alarm device the calculatio
86. controller simultaneously and hold for 2 seconds Display indoor unit address The entered indoor units address and type will be displayed each time the button is pressed When one entry is made only 1 address will be displayed no matter how many times the button is pressed e Returning to the normal mode after completing check Simultaneously press the FILTER and s2 buttons on the remote controller and hold for 2 seconds to return to the normal mode b In making paired settings Turn off the remote controller Press the remote controller s ON OFF button to stop operation the indicator light will go off Put in indoor unit address display mode Press the FILTER and buttons on the remote controller simultaneously and hold for 2 seconds e Changing to the linked operation unit address display state Press the button on the remote control Displaying the address of the indoor unit to be checked Change the address to that of the indoor unit to be checked by press ing the temperature adjustment buttons CDC Displaying the address of the linked Lossnay unit Press the button to display the addresses of the linked Lossnay and indoor unit in alternation Displaying the addresses of other entered units The addresses of the other entered units will be displayed in alternating fash ion after resting the button again Returning to the normal mode after completing the check Simultaneously press the FILTER and
87. controller systems Symptom or inspection code The transmission line of the indoor outdoor unit is connected to TB15 The transmission line of the indoor outdoor unit is shorted down or badly contacted Cause Check the part where the abnormality occurs The entire system In the entire refrigerant system G In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant system Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only Check the items shown in the left that are related to the indoor unit Inspection method and solution Though the content of operation is displayed on the remote controller some indoor units do not operate The power supply of the indoor unit is not on Wiring between indoor units in same group is not finished The indoor unit and Slim model are connected to same group The fuse on the indoor unit controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit Master is not on n case of connecting the system controller the setting of the system controller does not correspond to that of MA remote controller The fuse on the indoor unit Master controller board is blown is not displayed on
88. cover panel 5 Remove the electrical parts box See photo 3 6 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed 7 Remove 3 right side panel fixing screw 5 x 10 in the rear of the unit and then remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Recover refrigerant 10 Remove the 3 points of the motor for compressor fixing nut using a spanner or a monkey wrench 11 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 11 Valve bed Valve bed fixing screw Compressor MC Separator Separator fixing screw bed fixing 7 screws lt Accumulator Compressor fixing nut 13 Removing the accumulator 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 2 front cover panel fixing screws 5 x 10 and remove the front cover panel See photo 3 4 Remove 2 back cover panel fixing screws 5 x 10 and remove the back cover panel 5 Remove the electrical parts box See photo 3 6 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed 7 Remove 3 right side panel fixing screw 5 x 10 in the rear of the unit and then remove the
89. d and address setting permissible lengths and the prohibited items are listed in the standard system with detailed explanation The explanation for the system in this section Use one single outdoor unit and multiple outdoor units for M NET remote control system Use one single outdoor unit and multiple indoor units in the multiple outdoor units for the M NET remote control system A Example of a M NET remote controller system address setting is necessary Example of wiring control cables Wiring Method and Address Setting 1 Standard operation 1 remote controller for each indoor unit There is no need for setting the 100 position on the remote controller a Use feed wiring to connect terminals M1 and M2 on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the transmission cable block TB5 of each indoor unit IC Use non polarized 2 wire b Connect terminals M1 and M2 on transmission cable terminal block TB5 for each indoor unit with the terminal block TB6 for the remote controller RC c Set the address setting switch on outdoor unit P C B as shown below Unit Range Setting Method Indoor unit IC 001 to 050 Use the smallest address of all the indoor unit plus 50 Outdoor unit OC 051 to 100 101 to 150 Indoor unit address plus 100 Remote controller RC 2 Operation using 2 remote controllers
90. door fan motor Malfunction of indoor fan motor Defective operation of stop valve Not fully open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor 0 Short cycle of outdoor unit Dirt of outdoor heat exchanger Decreased airflow caused by defective inspection of outside temperature thermistor It detects lower temperature than actual temperature Disconnection or contact failure of connector 63H on outdoor controller board Disconnection or contact failure of 63H connection 09 Defective outdoor controller board Defective action of linear expansion valve Malfunction of fan driving circuit Solenoid valve SV1 performance failure High pressure cannot be controlled by SV1 High pressure sensor defective High pressure sensor input circuit defective in multi controller board Q Check indoor unit and repair defectives Check if stop valve is fully open Check piping and repair defectives Q Check outdoor unit and repair defectives 49 Check the inspected temperature of outside temperature thermistor on LED display 09 09 Check the connector 63H on outdoor controller board Check linear expansion valve 49 Replace outdoor controller board Check the solenoid valve performance Check the high pressure sensor Check the high pressure sensor Superheat due to low discharge temperature Abnormal if discharge superheat is
91. dress of the Lossnay in the indoor unit address display the indoor unit address in the linked unit address and the above content will also be recorded Apart from the indoor unit with the lowest address in the group display and enter the addresses of the other indoor unit that are to be linked with the Lossnay unit e Returning the normal mode after completing entry Press the FILTER and 5 buttons on the remote controller simultaneously and hold for 2 seconds to return to the normal mode Figure 4 B Making paired settings Figure 5 Completing normal entry ERROR CODE OA UNIT ADDRESS NO INDOOR UNIT INDOOR UNIT ADDRESS NO ADDRESS NO ERROR CODE OA UNIT ADDRESS NO Fi E display o These alternating IC or LC displays will appear when entry is completed normally The addresses of indoor unit and linked units are A flashing 88 will appear if there is a displayed simultaneously problem with the entry indicating that the unit does not exist INDOOR UNIT ADDRESS NO ERROR CODE OA UNT ADDRESS NO o 35 2 Address check Refer to section 1 regarding address entry a In making group settings Turn off the remote controller Press the remote controller s ON OFF button to stop operation the indicator light will go off Locate the indoor unit address display mode Press the FILTER and Sx buttons on the remote
92. during the operation the outdoor unit stops once and restarts operation in 3minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts When controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time lt 5110 gt is displayed For 10 minutes after starting compressor for defrosting or for 3minutes after recover of defrosting above mentioned short open are not detected Short 102 C 216 F or more Open 27 C 17 F or less Connector TH8 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Power board input circuit failure Wrong setting of model setting switch SW4 46 Check whether the connector TH8 in the power circuit board Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 F 180kOQ 10 C BO F 105kQ 20 C 68 F 63kQ 30 C 86 F 39kQ 40 C 104 F 25kQ 12345678 0 Setthe SW1to 9 When the temperature in multi controller board is not an actual temperature replace the power board 81 0 Open 999 9 Short See 9 5 SWITCH FUNCTION TABLE SW4 model switching then set correctly When SW4 1 is on it will be 5110 error Set correctly Abnormal point and de
93. e controller Auxiliary Heating Fan speed Fan speed Signal setting setting thermo Condition orr swe E Setting on OFF ON remote controller Stopped 5 Setting Outdoor unit and Auxiliary heat switch over temperatures When the DIPSW 4 4 is set to ON the outdoor unit and the contact output operates as shown below Setting on remote controller Baseboard Heating a Outdoor default setting and operations are shown below Stage 1 Outdoor unit HP operation Defrost Heater contact ON signal Other than defrost Contact OFF Amb Decreasing iei Amb Incareasing Stage 2 Outdoor unit HP operation Heater contact ON signal Stage 3 Outdoor unit OFF Standby Heater contact ON signal D b TH7 Outdoor Temperature 12 0 10 20 10 F 32 F 50 F 68 F When the set temperature ranges overlap the previously set pattern 1 2 or 3 has a priority The stage 1 has the highest priority 2 the second and then 3 b Based on above chart listed the sequence of operation on On Ambient Decrease Stage 1 7 gt 10 the Outdoor unit runs in HP mode Stage 2 TH7 10 to 12 the Outdoor unit runs in HP mode with Auxiliary heating Stage 3 7 lt 12 Auxiliary heating only Outdoor unit is OFF c Based on above chart listed the sequence
94. e of transmission line voltage and signal by unmatched kind of line Shield wire CVVS CPEVS Wire diameter 1 25mm AWG16 more 4 Mis operation of origin controller which happens by chance Check the transmission wave and noise on the transmission line Turn off power supply of outdoor unit indoor unit and lossnay for 2minutes or more at the same time Then turn on power supply again It recovers normally at the malfunction that happens by chance When same abnormality occurs again it is defective of displayed address and attribute Signal reception Remote controller Following symptoms are regarded as abnormality 1 When the remote controller cannot receive the signal from indoor controller normally even once for 3 minutes 2 When the remote controller cannot receive the signal even once for 2 minutes Defect of the transmission and reception circuit of the remote controller Defect of the transmission and reception circuit of the indoor controller board Noise occurs on the transmission line of the remote controller All remote controllers are set as sub remote controller Signal transmission Remote controller Following symptoms are regarded as abnormality 1 When sub remote controller cannot transmit the signal to the transmission path for 6 minutes 2 When the remote controller cannot finish transmitting the signal for 30 times on end Defect of the transmiss
95. ecting method Causes Check points Capacity code error When the connected indoor unit models cannot be connected lt 7101 gt is displayed The indoor unit models is not possible to connect The indoor unit of 06 54 code 4 28 is possible to connect D Check the model code registration switch indoor controller board SW2 in the connected indoor unit 2 The outdoor unit SW1 operation can check model code of the connected indoor units 12345878 Code of indoor unit No 1 9 2345678 Code of indoor unit No 2 Code of indoor unit No 3 Code of indoor unit No 4 Code of indoor unit No 5 Code of indoor unit No 6 2345678 Code of indoor unit No 7 2345678 Code of indoor unit No 8 Number of connecting unit over When the connecting unit exceeds a number of limitations error code 7102 is displayed 55 if the indoor unit is not connected becomes lt 7102 gt is display Connecting unit exceeds a number of limitations It is assumed abnormality excluding the following cases D The indoor unit can be totally connected up to 6 P36 8 P48 units The indoor unit can be connected up to 8 units G Ventilation unit connecting is only tunit Check whether the connecting unit exceeds a number of limitations or not Address setting error Address setting of the outdoor unit is wrong Addresses miss setting of the outdoor unit
96. erefore the capacity of PKFY PO8NAMU E and PLFY P18NLMU E will be calculated as follows by using the formula in 5 1 2 1 8000 Model 08 48 900 x 7 520 Btu h 52000 18000 Model 18 48 900 x 52000 16 930 Btu h During heating The total model capacity of indoor unit is 9000 x 2 20000 x 2258000 Btu h Therefore the capacity of PKFY PO8NAMU E and PLFY P18NLMU E will be calculated as follows by using the formula in 5 1 2 1 Model 08 54 500 x 2000 _ 8 460 Btu h pn 58000 20000 Model 18 54 500 x 18 790 Btu h 12 5 2 STANDARD CAPACITY DIAGRAM Before calculating the sum of total capacity of indoor units please convert the value following the formula on 5 1 1 5 2 1 PUMY P36NHMU BS Total capacity Capacity Btu h Consumption kW Current A 230V Current A 208V of Indoor units Cooling Heating Cooling Heating Cooling Heating Cooling Heating 18 18 000 20 200 1 38 1 45 6 1 6 4 6 8 19 19 000 21 300 1 45 1 52 6 4 6 7 7 1 20 20 000 22 400 1 52 1 60 6 7 7 0 7 4 21 21 000 23 500 1 60 1 67 7 1 7 4 7 8 22 22 000 24 700 1 68 1 75 7 4 7 7 8 2 23 000 25 800 1 76 1 83 7 8 8 0 8 6 24 000 26 900 1 85 1 91 8 2 8 4 9 0 25 000 28 000 1 94 1 98 8 6 8 7 9 5 26 000 29 200 2 04 2 06 9 0 9 1 9 9 27 000 30 300 2 14 2 15 9 4 9 4 10 4 28 000 31 400 2 24 2 23 9 9 9 8 10 9 29 000 32 500 2 35 2 31 10 4 10 2 11 5 30 000 33 700 2 46 2 40 10 9 10 5 12 0 31 000 34 800 2 58 2 48 1
97. fference between the number of bits sent from or other remote controllers are defective Check the transmission path and other the remote controller and the number actually transmitted through the transmis controllers sion path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path When the number of data errors is 02 Transmission data from remote controller m Transmission data on transmission path To cancel remote controller diagnosis Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp will blink After approximately 30 seconds the state in effect before the diagnosis will be restored 53 9 3 REMOTE CONTROLLER TROUBLE EA MITSUBISHI ELECTRIC B 6 6 nad ooo Oper O B e FILTER C45 Cocooo M NET Remote controller 1 For M NET remote controller systems Symptom or inspection code Cause indicator Appears when current is carried Inspection method and solution Though the content of operation is displayed on the remote controller some indoor units do not operate The power supply of the indoor unit is not on The address of the indoor units in same group or the remote controller is not set correctly The group setting between outdoor units is
98. gth The same as above MA remote controller cable length 23 24 5 06 S 200m 656ft 0 3 1 25 mm AWG22 AWG16 Three MA remote controller or more cannot be connect with the indoor unit of the same group TB3 TB7 Longest transmission cable length The same as above MA remote controller cable length 7 8 200m 656ft 0 3 1 25 mm AWG22 to AWG16 The second MA remote control ler is connected with the terminal block TB15 for the MA remote con troller of the same indoor unit IC as the first remote control TB7 31 D Example of group operation with 2 or more outdoor units and MA remote controller Shielding wires and address settings are necessary 02 TB15 185 TB15 MiM2S 12 QQQ OO Examples of Transmission Cable Wiring Shielded Wire Sub Remote Controller Address Always use shielded wire when making connections between the outdoor unit OC and the indoor unit IC as well for all OC OC and IC IC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on
99. he motor with the power supply on It causes trouble of the outdoor controller circuit board and fan motor Self check Symptom The outdoor fan cannot turn around Fuse check Check the fuse F500 on outdoor controller board Replace outdoor controller board MULTI B C B lt Did the fuse blow gt Yes gt 4 and fan motor MF1 2 Wiring contact check Contact of fan motor connector CNF1 2 4 d Is there contact failure gt gt Yes gt 4 Power supply check Remove the connector 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC280 340V When ACTM stops DC350V When ACTM is operating TEST POINT Vcc between 5 and 4 of the fan connector DC15V Is the voltage normal Yes gt Replace the fan motor E Yes OK Check the operation of fan END Replace outdoor controller board Y C Replace outdoor controller board OK Check the operation END Replace the fan motor D TESTS POINT TESTS POINT Vsp Mul
100. he same as above c In the case of using 2 remote controllers connect terminals 1 and 2 on transmission cable terminal block TB15 for each indoor unit with the terminal block for 2 remote controllers Set the sub remote controller position for one of MA remote controller s main switch Refer to the installation manual of MA remote con troller 3 Group operation OC TB7 Multiple indoor units operated together by 1 remote controller The same as above b The same as above Connect terminals 1 and 2 on transmission cable ter minal block TB15 of each indoor unit which is doing group operation with the terminal block the MA remote controller Use non polarized tow wire In the case of same group operation need to set the address that is only main indoor unit Please set the address of the indoor unit with the most functions in the same group in the number that 01 50 is young Combinations of 1through 3 above are possible 30 Name Symbol and the Maximum Units for Connection Permissible Lengths Prohibited items Longest transmission cable length L1 L2 200m 656ft 1 25 mm AWG16 MA remote controller cable length The MA remote controller and the M NET remote controller cannot be used together with the indoor unit the of the same group 1 82 200m 6561 0 3 1 25 mm AWG22 to AWG16 TB7 Longest transmission cable len
101. hnical manual Power consumption Total power consumption of each indoor unit See the technical manual of each indoor unit 1 power consumption of outdoor unit Standard capacity table Refer to 5 2 Total power consumption of system See the technical manual of each indoor unit 1 Please note that the power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units 2 Method of obtaining total current Page numbers in this technical manual Subtotal Total current through each indoor unit See the technical manual of each indoor unit 2 current through outdoor unit Standard capacity table Refer to 5 2 Total current through system See the technical manual of each indoor unit 2 Please note that the current through the outdoor unit will vary depending on the total capacity of the selected indoor units 3 Method of obtaining system power factor Use the following formula and the total power and current obtained in parts and in the above table to calculate the System power factor Total system power consumption System power factor Total system current x voltage 10 6 2 Applying to an electric power company for power and total current Calculations should be performed separately for heating and cooling employing the same methods use the largest resulting value in your application to the electric power company 83 11 REFRI
102. how the ratio by the temperature condition change when the rated capacity total capacity and the rated input are presumed 1 under standard length 7 6m 25ft and standerd temperature condition Standard conditions D B 26 7 W B 19 4 D B 80 F W B 67 F Rated cooling capacity OP DB Indoor D B 21 1 C D B 70 F Rated heating capacity Outdoor D B 8 3 C WB 6 1 C D B 47 F W B 43 F Use the rated input and rated power values given in the characteristics table for each indoor unit The input is the single value of the outdoor unit the input of each indoor unit must be added to obtain the total input 2 The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in 1 by the ratio between the individual capacity at the rated time and the total capacity at the rated time individual capacity at the rated time Individual capacity under stated conditions total capacity under the stated conditions x total capacity at the rated time 3 Capacity correction factor curve Figure 1 Cooling performance curve Figure 2 Heating performance curve C WB FWB 22 71 6 20 68 18 64 4 16 60 8 INDOOR C WB FWB 22 71 6 Cooling power consumption lt 20 68 68 ratio 64 4 16 60 8 INDOOR 0 4 38 808 85 GI 20800205 5 B 0 10 14 23 32 41 50 59 F WB Outdo
103. ical power has been turned on Wiring Method Address Settings Name Symbol and the Maximum Units for Connection Longest length via outdoor unit M NET cable Li L2 L3 L4 and Li L2 Le6 L7 5 500 m 1640ft 1 25 mm AWG 16 or more Longest transmission cable length M NET cable Li and L3 L4 and Le and L2 Le and L7 200 m 656ft 1 25 mm AWG16 or more Remote controller cable length m1 and m1 m2 m3 and m1 m2 m3 m4 200 m 656ft 0 3 to 1 25 mm AWG20 to AWG16 Permissible Length 51 TB3 13 25 25 QQ PAA QQ LOG 9o ANNIN XN SS 5 NUT Ix ND c DV 12V Prohibited items Group 1 Group 3 Group 5 Shielded Wire Sub Remote Controller Address 176006026 Never connect together the terminal blocks TB5 for transmission wires for indoor units IC that have been connected to different outdoor units OC M NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring together 33 9 TROUBLESHOOTING 9 1 CHECK POINTS FOR TEST RUN 9 1 1 Procedures of test run 1 Before test run make sure that following work is completed Installation related Make sure that the panel of cassette type and electrical wiring are done Otherwise electrical functions like auto vane will not operate normally Pi
104. igure 1 Propeller Fan motor fixing screws motor 2 Remove the top panel See figure 1 3 Remove 5 fan grille fixing screws 5 x 10 to detach the fan grille See figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See photo 1 5 Disconnect the connectors CNF1 and CNF2 on Multi controller board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See photo 2 Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Disconnect the connecting wire from terminal block pU 3 Electrical 4 Remove all the following connectors from Multi controller board gt parts box fan motor thermistor lt Outdoor pipe gt thermistor lt Discharge gt n thermistor Low pressure saturated temp thermistor Outdoor high pressure switch e high pressure sensor low pressure switch 24 Terminal block 4 way valve coil and bypass valve coil TB3 TB7 Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt we 2 1 Terminal block Fan motor CNF1 CNF2 tf Thermistor lt Outdoor pipe gt TH3 Thermistor lt Discharge gt TH4 p Thermistor Low pressure saturated temp Outdoor TH6 7 Valve bed High pressure switch 63H
105. ility of power supply Disconnected float switch connector Abnormal if detected that the float Switch connector is disconnected open during operation 1 Disconnection of connecor CN4F Check the disconnetion of connector CNAF on the indoor controller board Duplex address error Detected error when transmission of unit with the same address is confirmed Note Address Attribute displayed on the remote controller shows the controller detecting abnormality There are 2 units or more with the same address among the outdoor unit or indoor unit or lossnay controller remote controller When noise has occurred in the transmission signal and the signal has changed Look for the unit which is source of abnormality with the same address When the same address is found correct the address and turn off power supply of outdoor unit indoor unit and lossnay for 2 minutes or more as the same time Then turn on power supply Check the transmitted wave and the noise on the transmission line Transmission processor H W error 1 shows on the transmission line though the transmission processor transmitted 0 Note Address Attribute displayed on the remote controller shows the controller detecting abnormality When the wiring for either of the indoor unit the outdoor unit or lossnay transmission line is constructed or polarity is changed with the power supply turned on the transmi
106. inal block TB7 is unnecessary Connect the terminal S on the power supply unit with the earth g Set the address setting switch as follows Unit Range Setting Method IC Main 01 to 00 Use the smallest address within the same group of indoor units IC Sub 01 to 50 Use an address other than that of the IC Main in the same group of indoor units This must be in sequence with the IC Main Outdoor Unit 51 to 100 Use the smallest address of all the indoor units plus 50 address automatically becomes 100 if it is set as 01 50 Main Remote Controller 101 150 _ Set at an IC Main address within the same group plus 100 Sub Remote Controller 151 to 200 Set at IC Main address within the same group plus 150 MA Remote Controller Unnecessary address setting Necessary main sub setting h The group setting operations among the multiple indoor units is done by the remote controller RC after the electrical power has been turned on Name Symbol and the Maximum Units for Connection Longest length via outdoor units L1 L2 L3 L4 L1 L2 L3 L5 L1 L2 L6 L7 2 500 meters 1640ft 1 25mm AWG16 Longest transmission cable length L1 L3 L4 13 15 Le L2 L6 17 200 meters 1 25mm AWG16 Remote controller cable length 21 22 22 23 4 S 10 meters 33ft 0 5 to 1 25mm AWG20 to AWG16 If the length exceeds 10 meters 33ft use 1 25 mm AWG16 shielded wire The
107. indoor unit address display mode The procedure is same as b in 2 Address check Put into the linked unit address display mode The procedure is same as b in 2 Address check Display the address of the Lossnay unit or the indoor unit to be cleared e Deleting the address of a linked indoor unit Pressing the 6 8 8 button on the remote controller twice will clear the address entry of the displayed indoor unit resulting in the display shown in Figure 8 Returning to the normal mode after clearing an address The procedure is same as b in 2 Address check Figure 8 Display after address has been cleared normally 7 will appear in the unit type display location when an address has been cleared normally altenating display 88 will appear in the unit type display location when an abnormality has occurred during clearing 41 INDOOR UNIT ADDRESS NO OA UNIT ADDRESS NO 36 9 1 3 Countermeasures for Error During Test Run If a problems occurs during test run a code number will appear in the temperature display area on the remote controller or LED on the outdoor unit and the air conditioning system will automatically cease operating Determine the nature of the abnormality and apply corrective measures
108. indoor units of PLFY P18BM type Btu h kW x 3 412 x 35 31 105 0 0 4536 Above specification data is subject to rounding variation 10 Item Service Ref PUMY P48NHMU NHMU NHMU BS Cooling Capacity Btu h 48 000 Heating Capacity Btu h 54 000 Input Cool kW 4 97 Input Current Cool 3 A 24 0 21 7 Power factor Cool 3 96 99 5 Input Heat 3 kW 4 88 Input Current Heat 73 23 6 21 3 Power factor Heat 3 96 99 5 EER Cool 3 Btu h W 9 66 COP Heat 3 W W 3 24 Connectable indoor units Max 8 Max Connectable Capacity 62 400 130 Single phase 60Hz 208 230V Breaker Size 30A Max fuse size 40A Min Circuit Ampacity 26A Sound level Cool Heat 50 52 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FDCMT NHMUq ANB33FDHMT NHMUz2 Motor output 2 4 Starting method Inverter Crankcase heater Heat exchanger Plate fin coil Anti corrosion fin treatment Fan Fan drive No Propeller fan x 2 Fan motor output kW 0 086 0 086 Airflow m min CFM 100 3 530 Dimensions HxWxD mm 950 37 13 32 D mm in 330 30 13 1 3 16 H mm in 1 350 53 5 32
109. ing Conceald mounted Wall Mounted Floor Standing concealed 4 way flow 2 way flow 1 way flow built in P Exposed Cocealed Fresh Air 1 PLFY P PLFY P PMFY P PEFY P PDFY P PKFY P PCFY P PFFY P PEFY P Capacity N NCMU E NBMU E NLMU E NBMU E NMLU E NMHU E NMSU E NMU E NAMU E NGMU E NFMU E NGMU E NEMU E NRMU E NMHU E F 06 Q 08 Q 12 15 18 24 27 Q 30 36 O O 48 54 Decorative panel Name M NET remote controller MA remote controller Remote Model number PAR F27MEA US PAR 21MAA controller Functions Addresses must be set remote controller for use in conjunction with the Melans centralized management system Address setting is not necessary 1 It is possible only by 1 1 system 1 indoor unit of Fresh Air type is connected with 1 outdoor unit Operating temperature range outdoor temperature for fresh air type indoor units differ from other indoor units Refer to 3 2 2 3 2 UNIT SPECIFICATIONS 1 Method for identifying MULTI S model B Indoor unit lt When using Model 30 gt Outdoor u
110. ion and reception circuit of the remote controller Noise occurs on the transmission line of the remote controller There are 2 main remote controllers 0 0 Perform a check of the remote controller According to the results perform the following disposals When RC OK is displayed The remote controller is normal Turn off the power supply and turn it on again If HO or PLEASE WAIT is displayed for 4 minutes or more replace the indoor controller board When RC NG is displayed Replace the remote controller When RC 6832 or 6833 or ERC 00 66 is displayed These displays may be due to noise etc Set one remote controller to main remote controller and the other to sub remote controller Total capacity When connected total models of the indoor units exceed the specified level 130 of the outdoor unit models error code lt 7100 gt is displayed Connecting total models of the indoor unit exceed the specified level PUMY P36NHMU code 26 PUMY P48NHMU code 34 PUMY P48NHMU code 35 Q There is a mistake in the registration of model name code of the outdoor unit 51 D Check the total models of connected indoor unit Check the model code registration switch indoor controller board SW2 of connected indoor unit Check the model code registration Switch outdoor multi controller board SWA of the outdoor unit Abnormal point and det
111. istor Compressor lt Discharge gt MC Removing the 4 way valve coil 2154 Photo 8 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 Removing the 4 way valve coil mu veo col 8 Remove 4 way valve solenoid coil fixing screw b Disconnect the connector 2154 green on the Multi controller board in the electrical parts box M4 x 6 4 Remove the 4 way valve coil by sliding the coil toward you A 4 way valve M 724 8 Removing the 4 way q A Thermistor 1 Remove the service panel See figure 1 lt Low pressure 2 Remove the top panel See figure 1 2 a temp gt 3 Remove 3 valve bed fixing screws 4 x 10 and 4 ball valve and stop valve fixing screws 5 x 16 and then remove the valve bed 4 Remove 4 right side panel fixing screw 5 x 10 in the Rion rear of the unit and then remove the right side panel 5 Remove the 4 way valve coil See photo 8 6 Recover refrigerant 7 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 120 C 248 F or more then braze the pipes so that the inside of pipes are not oxidized 90 OPERATING PROCEDURE PHOTOS 9 Removing bypass
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113. lection gt LED3 LED Power Supply to Main Microcomputer gt TH8 Thermistor lt Heatsink gt 5 2 Switch lt Function Selection gt F1 F2 Fuse lt T6 3AL250V gt DCL Reactor 5 3 Switch lt Test gt X501 505 Relay ACTM Active Filter Module 5414 Switch lt Model Selection gt M NET P B M NET Power Circuit Board CE Main Smoothing Capacitor SW5 Switch Function Selection TP1 ConnectionTerminal Ground Caution for electrical work Use copper supply wires Cautions when Servicing e NWARNING When the main supply is turned off the voltage 340 V in the main capacitor will drop to 20 V in approx 2 minutes input voltage 240 V When servicing make sure that LED1 LED2 on the outdoor circuit board goes out and then wait for at least 1 minute Components other than the outdoor board may be faulty Check and take corrective action referring to the service manual Do not replace the outdoor board without checking NOTES 1 Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit Self diagnosis function The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch SW1 and LED1 LED LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF Example During normal operation When the compressor and The LED indicates the d
114. length of this section 18 should be included in the calculation of the maximum length and overall length Permissible Length Prohibited items Shielded Wire Sub Remote Controller Address Never connect together the terminal blocks TB5 for transmission wires for indoor units IC that have been connected to different outdoor units OC Set all addresses to ensure that they are not overlapped M NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring together 29 Example of a MA remote controller system address setting is not necessary NOTE In the case of same group operation need to set the address that is only main indoor unit Example of wiring control cables Wiring Method and Address Setting 1 Standard operation 1 remote controller for each indoor unit a Use feed wiring to connect terminals M1 and M2 on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the transmission cable block TB5 of each indoor unit IC Use non polarized 2 wire b Connect terminals 1 and 2 on transmission cable terminal block TB15 for each indoor unit with the terminal block for the MA remote controller MA 2 Operation using 2 remote controllers oc TB7 Using 2 remote controllers for each indoor unit a The same as above b T
115. ls are necessary to use R410A refrigerant Tools for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Electronic refrigerant charging scale Gauge manifold Charge hose Gas leak detector Torque wrench Use ester oil ether oil or alkylbenzene oil small amount as the refrigerant oil applied to flares and flange connections Keep the tools with care If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Charge refrigerant from liquid phase of gas cylinder Do not use a charging cylinder If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered 1 Cautions for service Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously
116. ltage and signal by a number of over connected units Miss operation of origin controller which happens by chance Original controller defective Contact failure of outdoor unit or indoor unit transmission line Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor outdoor unit When operating with multi refrigerant system indoor units the remote controller transmits the signal to the indoor unit after the other refrigerant system outdoor unit is turned off or turned on again in 2minutes and detects abnormality Contact failure of remote controller indoor unit transmission line Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or remote controller 49 D Turn off power supply of outdoor unit indoor unit fresh master and lossnay for 2 minutes or more at the same time Then turn on power supply It recovers normally at the malfunction that happens by chance Check the address switch in the address which occurs abnormality G Check whether the transmission line is connected loosen or not at origin Terminal board or connector Check whether the transmission line tolerance is over or not Check whether the kind of transmission line is mistaken or not When there is any trouble from above 0 0 turn off power supply of outdoor unit ind
117. master side The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the fresh master When the cause of displayed address and attribute is on the lossnay side The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the lossnay When the controller of displayed address and attribute is not recognized operating with multi refrigerant system indoor units the indoor units transmits the signal to the remote controller after the other refrigerant system outdoor unit is turned off or turned on again in 2minutes and detects abnormality Contact failure of remote controller or indoor unit transmission line G Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or remote controller When synchronized operating with other refrigerant system fresh master the indoor units transmits the signal to the fresh master after the fresh master and same refrigerant system outdoor unit is turned off or turned on again in 2minutes and detects abnormality Contact failure of fresh master indoor unit transmission line Indoor unit or fresh master transmission connector CN2M disconnection 4 Sending receiving signal circuit failure in the indoor unit or fresh master Q When the lossnay power supply is Off the indoor unit detects abnormality at signal transmitting
118. moe 144 INDOOR UNIT INDOOR UNIT INDOOR UNIT ADDRESS NO ADDRESS NO ADDRESS NO Type of unit is displayed Flashing 88 indicates entry error b Paired Settings Turn off the remote controller Press the remote controller s ON OFF button to turn it off the indicator light will go off Put in indoor unit address display mode Press the FILTER and Sx buttons on the remote controller simultaneously and hold for two seconds The above steps are the same as when making group settings A Changing to the linked operation unit address display state The display shown in Figure 4 will appear when the 10 button on the remote control is pressed Displaying the address of the Lossnay unit and linked indoor unit In this situation the indoor unit number will be the lowest address of the group The Lossnay unit will not operate if this setting is incorrect If the temperature adjustment C4 CY buttons are pressed the address be changed to the indoor unit that are to be linked If the time setting C4 2C v buttons are pressed the address of the linked units may be changed to the address where it is desired to enter the Lossnay Linking the Lossnay and the indoor unit The display shown in Figure 5 will appear when the TEST RUN button is pressed The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner is desired to display the ad
119. ndoor controller board Defective driving circuit of drain pump Defective input circuit of float switch Both of above mentioned and the indoor linear expansion valve full closed failure leakage happens synchronistically Note Address Attribute displayed on the remote controller shows the indoor unit which is cause of trouble Check if drain up machine works Check drain function Check moving part of float switch Check the value of resistance with the float switch ON OFF Change the indoor controller board amp Check whether the indoor linear expansion valve leaks or not Drain sensor THd DS When the drain sensor detects short open while the operation Connector CN31 contact failure insertion failure Thermistor wiring disconnection or half disconnection Thermistor defective Indoor controller board detecting circuit failure Check whether the indoor controller board connector CN31 is disconnected or not Check whether the thermistor wiring is disconnected or not 9 Check the resistance of thermistor If abnormality is not found in the method of the above mentioned from to G it is defective of the indoor controller board Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating Over current 27 5A Stop valve is closed
120. nit lt When using model 48 gt 30 MU E 148 M 0 85 Outdoor unit eus R410A R22 PUE number R410A M NET control L Ceiling cassette COIImonness Outdoor unit K Wall mounted type MEL ES model type E Hidden skylight type Frequency Frequency Power supply Salt proof C Ceiling suspended type Conversion UL model Corverston N Single phase type M Ceiling cassette type controller L control Controller 208 230V 60Hz F Floor standing type Unit model type Indicates equivalent NEW frequency converter to Cooling capacity one to many air conditioners flexible design type Indicates equivalent to Cooling capacity Power supply N Single phase 208 230V 60Hz 2 Operating temperature range Cooling Heating Indoor side intake air temperature W B 15 24 C 59 75 F 15 27 C 59 81 F Outdoor side intake air temperature D B 5 46 C 23 115 F 1 W B 18 15 C 0 60 F Notes D B Dry Bulb Temperature W B Wet Bulb Temperature 1 10 46 C DB 50 115 FDB In case of connecting PKFY P06 P08 type indoor unit case of connecting fresh air type indoor unit AU
121. not registered to the remote controller The fuse on the indoor unit controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit is not on The fuse on the indoor unit controller board is blown is not displayed on the remote The power supply of the outdoor unit is not on controller M NET remote controller The connector of transmission outdoor power board is not connected is not fed The number of connected indoor unit in the refrigeration system is over the limit or the number of connected remote controller is over the limit M NET remote controller is connected to MA remote controller cable The transmission line of the indoor outdoor unit is shorted or down M NET remote controller cable is shorted or down Transmission outdoor power board failure HO keeps being displayed or it is displayed periodically is usually displayed about 3 minutes after the power supply of the outdoor unit is on The power supply for the feeding expansion unit for the transmission line is not on The address of the outdoor unit remains 00 The address of the indoor unit or the remote controller is not set correctly MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller does not operate though 9 is displayed 2 For MA remote
122. ns should be performed for the second smallest room Ventilation apparatus Indoor unit The second smallest room The smallest room 3 Use the results of calculations 1 and 2 to calculate the refrigerant concentration Total refrigerant in the refrigerating unit kg Ibs 2 ial maximum concentration The smallest room in which an indoor kg nv Ibs ft unit has been installed Maximum concentration of R410A 0 3kg nv 0 01 9Ibs ft3 If the calculation results do not exceed the maximum concen tration perform the same calculations for the larger second and third room etc until it has been determined that nowhere will the maximum concentration be exceeded 12 DISASSEMBLY PROCEDURE OUTDOOR UNIT PUMY P36NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel Figure 1 Panel fixing screws 2 1 Remove 3 service panel fixing screws 5 10 and slide AC the hook on the right downward to remove the service Y panel l Um 2 Remove screws 3 for front 3 for rear 5 x 10 of the top Grille 1 fixing panel and remove it screws Grille fixing screws SU jl Service panel fixing screws 2 Removing the fan motor MF1 MF2 Photo 1 Frontpanel Photo 2 Fan 1 Remove the service panel See f
123. nsmitted data by a defective repeater function which connects and intercepts the transmission of controlling system and centralized control system and it causes abnormal detection Check whether the transmission line of the indoor unit fresh master lossnay and remote controller is connected to the outdoor unit terminal board TB7 for centralized controller or not Check whether the transmission line with the other refrigerant system of the indoor unit and lossnay is connected to the outdoor unit terminal board TB3 for transmission or not Check whether the outdoor unit terminal board for transmission line and for centralized controller TB7 are connected or not Check the transmitted wave and the noise on the transmission line Signal communication error with transmission processor Signal communication error between unit processor and transmission processor Note Address Attribute displayed on the remote controller shows the controller detecting abnormality data of the unit transmission processor was not normally transmitted due to accidental disturbance such as noise and lightening surge The address transmission from the unit processor was not normally transmitted by the hardware of transmission processor defective 48 Turn off power supply of outdoor unit indoor unit and lossnay for 2minutes or more at the same time Then turn on power supply It normall
124. nsmitting signal to the outdoor controller circuit board 0 5 DC Zero cross signal 0 5V DC Brief Check of POWER MODULE Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc If they are short circuited it means that they are broken 1 Check of POWER MODULE Check of DIODE circuit _T J P1 SIHNT _T Check of IGBT circuit P2 U 21 1 P2 W 2 0 N2 V Note The 5 L N 1 2 V in the diagram not actually printed on the board 1 21 1 w and shown CNDC 310V DC G Connect to the outdoor con troller circuit board 18V DC 16V DC 16V DC CN3 Thermistor TH8 lt Heatsink gt 3 TABS T Connect to the outdoor noise filter circuit board Voltage among phases 208 230V AC TABN1 SC N1 Connect to the ACTM 4 1 1 lt WHT gt 770 f pri 5 etection of primary 98 a current 5 outdoor noise filter circuit board CN5 CN4 Connect to the outdoor controller circuit board CN4
125. ntroller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 F about 700kO 10 C 50 F about 410kQ 20 C 68 F about 250kO 30 C B6 F about 160kQ 40 C 104 F about 104kQ 12345678 Set the SW1 to When the temperature in multi controller board is not an actual temperature replace the multi controller board 1 3 Open 219 4 Short Display Abnormal point and detecting method Causes Check points 5102 Liquid pipe temperature thermistor TH22 When the thermistor detects short open during the operation the operation stops and the operation changes to protect mode of restarting in 3minutes If the thermistor does not recover in 3minutes the operation stops due to detecting abnormality In this time lt 5102 gt is displayed Then if the thermistor recover in 3minutes it operates normally Short Detected 90 C 194 or more Open Detected 40 C 40 F or less Connector CN21 or CN44 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Detecting circuit failure in the indoor controller board Check whether the connector CN21 or CN44 in the indoor controller board is connected or not Check whether the thermistor wiring is disconnected or not
126. o be in the water the drain pump is judged to be abnormal and lt 2502 gt will be displayed It takes minutes and 15 seconds to detect abnormality including the time to judge to be in the water The unit continue to detect abnormality while turned off When the conditions below 1 2 and Forced outdoor unit stop condition are met 1 Detected that liquid pipe temperature room temperature S 10deg 18 F for 30 minutes constantly 2 Float switch detects to be in the water for 15 minutes constantly Before Forced outdoor unit stop Condition is met the unit always detects above The indoor unit detecting 4 above stops due to detecting abnormality the outdoor unit in same refrigerant system compressor is inhibited to operate The unit which stops due to detecting abnormality displays 2502 amp Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit and its outdoor unit in same refrigerant system Forced outdoor unit stop cannot be released by remote controller OFF NOTE Above mentioned 0 9 and 0 are detected independently Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe G Defective moving part of float switch Foreign matter on the moving part of float switch ex sludge etc Defective float switch Defective i
127. oard is not an actual temperature replace the multi controller board 42 5 Open 91 9 Short Abnormal point and detecting method Causes Check points Gas pipe temperature thermistor TH23 When the thermistor detects short open after 3minutes continuous thermo ON during cooling or dry operation the operation stops and the operation changes to protect mode of restarting in 3minutes If the thermistor does not recover in 3minutes the the operation stops due to detecting abnormality In this time lt 5103 gt is displayed Then if the thermistor recover in 3minutes it operates normally Short Detected 90 C 194 F or more Open Detected 40 40 F or less CN29 or CN44 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Detecting circuit failure in the indoor controller board Check whether the connector CN29 or CN44 in the indoor controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor OC 32 15 10 C bO F 9 6kQ 20 C 68 6 3 30 C 86 4 3 40 104 F 3 0kO When there is no problem in above mentioned DOG replace the indoor controller board Pipe temperature judging defrost thermistor TH3 When controller detects short open in thermistor during the operation the outdo
128. of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because its working pressure is higher than that of other refrigerants Therefore to enhance airtightness and intensity flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch the dimension B changes Use torque wrench corresponding to each dimension Dimension A 1 5 2 Flare cutting dimensions Nominal dimensions inch Outside diameter mm inch Dimension A 4 R410A R22 dimensions inch ile Dimension Flare nut dimensions Nominal Outside mm inch Dimension B diameter inch R410A R22 1 4 6 35 9 1 11 32 23 64 9 0 1 4 17 0 43 64 17 0 3 8 9 52 13 2 1 2 33 64 13 0 3 8 22 0 7 8 22 0 1 2 12 70 16 2 1 2 26 0 1 3 64 24 0 5 8 19 7 49 64 25 32 3 4 Tools for R410A The following table shows whether conventional tools can be used or no
129. oor unit and lossnay for 2minutes or more at the same time Then turn on power supply When there is not any trouble in single refrigerant system 1 outdoor unit from above controller defective in displayed address and attribute When there is not any trouble in different refrigerant system 2 outdoor unit or more from above determine it after When the address which should not exist is an origin since there is the indoor unit which memorizes the address data cancel the unnecessary address data by the manual setting function of remote controller However they are limited to the System which sets the group between different refrigerant systems or which fresh master lossnay are connected When there is not any trouble from above replace the displayed address attribute controller board In this time when the error does not recover to normal the outdoor unit multi controller board repeater circuit defective is expected Check the recovery by replacing the multi controller board one by one continued on the next page Display Abnormal point and detecting method Causes Check points 6607 When the cause of displayed address and attribute is on the remote controller side The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the remote controller unit When the cause of displayed address and attribute is on the fresh
130. or unit stops once and restarts operation in 3minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts when controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time 5105 is displayed For 10 minutes after starting compressor for defrosting or for 3minutes after recover of defrosting above mentioned short open are not detected Short 88 C 190 F or more 0 4kO Open 39 38 F or less 115kQ D Connector TH3 contact failure Thermistor wiring disconnection or disconnection 9 Thermistor failure Multi controller board input circuit failure 45 Check whether the connector in the multi controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 15 10 C 50 F 9 6kQ 20 C 68 6 3 30 C 86 F 4 3kO 40 C 104 F 3 0kO 12345678 on Setthe SW1 to When the temperature in multi controller board is not an actual temperature replace the multi controller board 42 5 Open 91 9 Short Display Abnormal point and detecting method Causes Check points 5106 Outdoor temperature thermistor TH7 When controller detects sho
131. or Outdoor 15 5 3 2 Correcting Capacity for Changes in the Length of Refrigerant Piping During cooling to obtain the ratio and the equivalent piping length of the outdoor units rated capacity and the total in use indoor capacity first find the capacity ratio corresponding to the standard piping length from Figure 3 at first and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity During heating to find the equivalent piping length first find the capacity ratio corresponding to standard piping length from Figure 3 and then multiply by the heating capacity from Figure 2 to obtain the actual capacity 1 Capacity CORRECTION CURVE Figure 3 Cooling 100 oo UU Heating 95 THEE E Heating P36 48 models 5 90 gt 85 9 Cooling P36 model 9 80 O Cooling P48 model 75 70 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 m 16 33 50 70 80 100 115 130 150 165 180 195 215 230 245 260 ft Corrected pipe length 2 Method for Obtaining the Equivalent Piping Length Equivalent length for type P48 length of piping to farthest indoor unit 0 3 number of
132. or at least 1 minute Components other than the outdoor board may be faulty Check and take corrective action referring to the service manual Do not replace the outdoor board without checking NOTES Self diagnosis function The indoor and outdoor units can be diagnosed automatically using the self diagnosis switch SW1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF During normal operation The LED indicates the drive state of the controller in the outdoor unit Refer to the wiring diagrams of the indoor units for details on wiring of each indoor unit Example When the compressor and SV1 are turned during cooling operation When fault requiring inspection has occurred The LED alternate the fault has occurred 11 DE Bit 1 2 3 4 5 6 7 8 1 23 45 67 8 inntinn Compressor z C Indication one 52C 2154 5 1 5 2 Always 111111 0121 indicates the inspection code and the location of the unit in which 20 63HS TH7TH6 TH3 4 63L 63H MULTI 18 16
133. ormality gt lt Within 1 hour 39 Within 1 gt hour Display Abnormal point and detecting method Causes Check points 2502 Drain sensor model Drain pump DP Let drain sensor self heated and if temperature rises slightly as suspensive abnormality operation stops and changes to protect mode of restarting in 3 minutes Drain pump is abnormal if the condition above is detected during suspensive abnormality lt 2502 gt is displayed Malfunction of drain pipe is constantly detected during drain pump operation The unit enters to forced outdoor unit stop when following conditions a and b are satisfied while the above mentioned detection is performed a The drain sensor detects to be Soaked in the water 10 times in a row b The room teperature subtracted with liquid pipe temperature is detected to be less than 10 C 18 F continuously for 30 minutes When the drain sensor detects to be NOT soaked in the water the detection record of a and b will be cleared Drain pump abnormality above 0 8 is detected before it becomes an outdoor unit forced stop condition When indoor unit detects above condition outdoor unit in same refrigerant sytem stops Also indoor unit except for Fan or OFF mode unit stop 2502 is displayed on stopped unit amp Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop
134. ot operate though is displayed The power supply of the indoor unit Master is not on The transmission line of the indoor outdoor unit is connected to TB15 The transmission line of the indoor outdoor unit is shorted down or badly contacted The fuse on the indoor unit controller board is blown Check the part where the abnormality occurs The entire system In the entire refrigerant system In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant system Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only Check the items shown in the left that are related to the indoor unit 9 4 THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE EMERGENCY Symptom Display of remote controller Even the cooling heating Cooling Heating blinks The indoor unit can not cool heat if other indoor units are heating operation selection button is pressed the indoor unit cannot be operated cooling The auto vane runs freely Normal display Because of the control operation of auto vane it may change over to horizontal blow automatically from the downward blow in cooling in cause the downward blow operation has been continued for one hour At defrosting in heating hot adjusting and thermostat OFF it automatically changes
135. ov Photo 10 ing the right side panel Note 3 When installing the high pressure switch and low pressure switch cover them with a wet cloth to prevent them from heating 100 C 212 F or more then braze the pipes so that the inside of pipes are not oxidized 11 Removing the high pressure sensor 63HS 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove the electrical parts box See photo 4 4 Remove 3 right side panel fixing screws 5 10 in the rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure sensor 6 Recover refrigerant 7 Remove the welded part of high pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure sensor cover it with a wet cloth to prevent it from heating 100 C 212 more then braze the pipes so that the inside of pipes are not oxidized High pressure LOW pressure sensor 63HS switch 63L 91 OPERATING PROCEDURE PHOTOS 12 Removing the compressor MC 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 2 front cover panel fixing screws 5 x 10 and remove the front cover panel See photo 3 4 Remove 2 back cover panel fixing screws 5 x 10 and remove the back
136. over to horizontal blow Fan setting changes during heating Normal display Ultra low speed operation is commenced at thermostat OFF Light air automatically change over to set value by time or piping temperature at thermostat ON Fan stops during heating operation Defrost X The fan is to stop during defrosting Fan does not stop while operation has been stopped Light out Fan is to run for 1 minute after stopping to exhaust residual heat only in heating No setting of fan while start SW has been turned on STAND BY Ultra low speed operation for 5 minutes after SW ON or until piping temperature becomes 35C There low speed operate for 2 minutes and then set notch is commenced Hot adjust control Indoor unit remote controller shows HO or PLEASE WAIT indicator for about 2 minutes when turning ON power supply blinks PLEASE WAIT blinks System is being driven Operate remote controller again after HO or PLEASE WAIT disappears Drain pump does not stop while unit has been stopped After a stop of cooling operation unit continues to operate drain pump for 3 minutes and then stops it Drain pump continues to operate while unit has been stopped Unit continues to operate drain pump if drainage is generated even during a stop 55 9 5 INTERNAL SWITCH FUNCTION TABLE PUMY P48NHMU NHMU NHMU BS PUMY P36NHMU BS Operation in Each Swi
137. ping related Perform leakage test of refrigerant and drain piping Make sure that all joints are perfectly insulated Check stop valves on both liquid and gas side for full open Electrical wiring related Check ground wire transmission cable remote controller cable and power supply cable for secure connection Make sure that all switch settings of address or adjustments for special specification systems are correctly settled 2 Safety check With the insulation tester of 500V inspect the insulation resistance Do not touch the transmission cable and remote controller cable with the tester The resistance should be over 1 0 M Do not proceed inspection if the resistance in under 1 0 M Inspect between the outdoor unit power supply terminal block and ground first metallic parts like refrigerant pipes or the electrical box next then inspect all electrical wiring of outdoor unit indoor unit and all linked equipment 3 Before operation a Turn the power supply switch of the outdoor unit to on for compressor protection For a test run wait at least 12 hours from this point b Register control systems into remote controller s Never touch the on off switch of the remote controller s Refer to 9 1 2 Special Function Operation and Settings for M NET Remote Controller as for settings In MA remote controller s this registration is unneces sary 4 More than 12 hours later from power supply to the outdoor unit turn
138. provides an introduction to electrical wiring for the CITY MULTI S series together with notes concerning power wiring wiring for control transmission wires and remote controller wires and the frequency converter 10 1 OVERVIEW OF POWER WIRING 1 Use a separate power supply for the outdoor unit and indoor unit 2 Bear in mind ambient conditions ambient temperature direct sunlight rain water etc when proceeding with the wiring and connections 3 The wire size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker consideration of voltage drops Make sure the power supply voltage does not drop more than 10 4 Specific wiring requirements should adhere to the wiring regulations of the region 5 Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord For example use wiring such as YZW 6 Install an earth longer than other cables 7 Use copper supply wires Use electric wires over the rating voltage 300V Warning sure to use specified wires to connect so that no external force is imparted to terminal connections If connections are not fixed firmly it may cause heating or fire Be sure to use the appropriate type of overcurrent protection switch Note that generated overcurrent may include some amount of direct current Caution Some installation site may require attachment of an earth leakage breaker If no
139. r heat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is fully open 39 Turn the power off and check if 5101 is displayed when the power is turned again When 5101 is displayed refer to Check points for 5101 Check linear expansion valve Low pressure 63L worked Abnormal 63L is worked under 0 03 4 35PSIG during compressor operation 63L Low pressure switch Stop valve of outdoor unit is closed during operation Disconnection or loose connection of connector 63L on outdoor controller board Disconnection or loose connection of 63L 0 Defective outdoor controller board Leakage or shortage of refrigerant Malfunction of linear expansion valve Check stop valve Check the connector 63L on outdoor controller board Correct to proper amount of refrigerant amp Check linear expansion valve 1 High pressure High pressure switch 63H worked Abnormal if high pressure switch 63H worked during compressor operation 4 15 MPa 602PSIG 63H High pressure switch 2 High pressure High pressure sensor 63HS detect Abnormal if high pressure sensor detects 4 31MPa 625PSIG or more or over 4 15MPa 602PSIG for 3 minutes during the compressor operation Short cycle of indoor unit Clogged filter of indoor unit Decreased airflow caused by dirt of indoor fan Dirt of indoor heat exchanger Locked in
140. r supply 6 6 16V DC Inverter drive power supply 16V DC Inverter drive power supply CNAC Power supply for multi controller board TEST POINTG voltage between pins of C515 and C516 DCOV when stopped DC1 6 5V when operated Same as CNF1 2 DC15V when stopped DCO0 15V pulse when operated 67 5 3 GE 4 e De e d 7 29 4 ri Cc valve zl 1 2 zoso Hd 410 8 PES 4E 2154 E a en amp Four way valve Ime Ped p oas 9 1954 1508 9 soraz g H 555 111 iD ff 25 Se 5 CS 88 Vcc TEST ET 2223 2 a A e Voltage between pins of 1 ___ zt C82A DC15V 5 Le Ws as CNF1 2 z K Cu E a OR zozu 5 _ 52 52C relay signal CNF1 2 TEST POINTO PES Connect to fan motors Voltage between pins of CNDC e E C510 DC290V 350V DC290V 350V 4 Same CNF1 2 9 05 DC0 6 5V 09 96 CNDC and C510 have the same voltage Also possible to check at self check No 45 SW1 10110100 Outdoor power circuit board PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P36NHMU PUMY P36NHMU BS CN2 Connect to the outdoor controller circuit board CN2 Tra
141. rainwater If a sunshade is installed rainwater may not clean the panel To ensure that water does not collect in the base of the outdoor unit make sure that the base is level not at angle Water collecting in the base of the outdoor unit could cause rust If the unit is installed in a coastal area clean the unit with water regularly to remove any salt build up If the unit is damaged during installation or maintenance be sure to repair it Be sure to check the condition of the unit regularly Be sure to install the unit in a location with good drainage 2 3 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix with different kind of refrigerant Furthermore as the working pressure of R410A is 1 6 time higher than that of R22 their sizes of flared sections and flare nuts are different Thickness of pipes Because the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 0 7mm 7 256 inch or below Diagram below Piping diameter and thickness Nominal dimensions inch 1 4 3 8 Thickness mm inch R410A R22 0 8 1 32 0 8 1 32 0 8 1 32 0 8 1 32 0 8 1 32 0 8 1 32 1 0 5 128 Outside diameter mm 6 35 9 52 12 70 15 88 19 05 GDimensions
142. ransmission gt F1 F2 Fuse 6 3A Connection Lead lt L Phase gt TB7 Terminal Block lt Contralized Control gt F500 Fuse lt 3A gt Connection Lead lt N Phase gt MC Motor for Compressor 51 1 Switch lt Display Selection gt El Connection Terminal lt Ground gt MF1 MF2 Fan Motor sw2 Switch lt Function Selection gt 1 2 Connector 2154 Solenoid Valve lt Four way valve gt SW3 Switch lt Test Run gt CN5 Connector 5 1 Solenoid Valve lt Bypass valve SW4 Switch lt Model Selection gt M P B Transmission Power Board TH3 Thermistor lt Outdoor Pipe Temperature SW5 Switch Function Selection CN1 Connector To Noise Filter Circuit Board TH4 Thermistor lt Discharge Temperature gt SW6 Switch lt Function Selection gt CN2 Connector lt To Multi Controller Board gt TH6 Thermistor lt Low Pressure Saturated Temperature SW7 Switch lt Function Selection gt TH7 Thermistor lt Outdoor Temperature gt SW8 Switch Function Selection TH8 Thermistor lt Heatsink gt SWU1 Switch lt Unit Address Selection 1s digit gt 63HS High Pressure Sensor Discharge Pressure gt SWU2 Switch Unit Address Selection 10115 digit 63H High Pressure Switch TRANS Transfomer 63L Low Pressure Switch LED1 2 Digital Indicator Operation Inspection Display CB Main Smoothing Capacitor LED3 LED Power Supply to Main Microcomputer gt ACTM Active filter Module CNS1 Connector lt Multi System gt RS Rush Current Protect Resistor CNS2 Connector lt Centralized Co
143. reaker and power C Check wiring Check power board Check noise filter board Yes Is the voltage of CNDC PNK on multi board 280 350V DC Yes Is the voltage to the compressor No U V U W and V W balanced Yes C Normal 2 208 230 10 280 350V DC Multi controller board lt gt conv circuit Check wiring Check model setting switch SW4 on the multi controller board Replace power board P36NHMU 208 230V 10 AC 208 230V 10 AC 5 4 NI lt lt 12 1 See test point 62 Power board U V 10V 180V AC U W 10V 180V AC V W 10V 180V AC Check method of noise filter circuit board E Noise filter circuit board check 2 Is the voltage of main incoming power 208 230V 10 Yes Is the voltage of CNAC RED on multi board CNAC RED 208 230V 10 Yes Is the voltage between M1 and M2 on TB3 M NET transmission 24 30V DC Yes Is the voltage of CNDC PNK on multi board 280 350V DC Yes Normal 12V DC from multi board CNLVB 208 230V 10 AC Power circuit board 7 circuit CNDC PNK 3 1 280 350V DC
144. right side panel 8 Recover refrigerant 9 Remove 4 welded pipes of power receiver inlet and outlet 10 Remove 2 receiver leg fixing screws 4 x 10 See photo 13 Note Recover refrigerant without spreading it in the air Photo 12 Photo 13 Outlet Accumulator mia Accumulator leg fixing screws 92 13 PARTS LIST 13 1 STRUCTURAL PARTS PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU PUMY P48NHMU BS 10 AURATA AT SERRA Parts of PUMY P48NHMU are set as the same service parts as PUMY P48NHMU BS Q ty set Part No Part Name Specification PUMY P48 PUMY P48 Remarks Wiring Diagram NHMU BS NHMU Bs Drawing symbol R01 E04 SIDE PANEL L 1 1 T7W E02 FAN GRILLE 2 T7W E04 FRONT PANEL 1 R01 E18 BASE ASSY R01 E26 BASE ASSY R01 E19 MOTOR SUPPORT R01 30L HANDLE T7W E01 COVER PANEL FRONT Including CONDUIT PLATE R01 E14 COVER PANEL FRONT Including CONDUIT PLATE T7W E00 COVER PANEL REAR Including CONDUIT PLATE R01 E05 COVER PANEL REAR Including CONDUIT PLATE T7W E16 SIDE PANEL R T7W E06 SERVICE PANEL R01 E01 REAR GUAR
145. rive state of the controller in the outdoor unit SV1 are turned during cooling operation Bit 1 2 3 4 5 6 7 8 1 23 45 67 8 inati Compressor 7 SS Indication 520 2184 svi 892 Always lit H it When fault requiring inspection has occurred f The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred 22
146. rm test run TEST RUN appears on display panel Press OPERATION SWITCH button to make sure that air blows out Select Cooling or Heating by OPERATION SWITCH button to make sure that cool or warm air blow out Press Fan speed button to make sure that fan speed is changed by the button Press AIR DIRECTION button or LOUVER button to make sure that air direction is adjustable horizontal downward upward and each angle Check outdoor fans for normal operation Check interlocked devices like ventilator for normal operation if any This is the end of test run operation Press ON OFF button to stop and cancel test run NOTE 1 If error code appears on remote controller or remote controller malfunction refer to 9 1 3 Countermeasures for Error During Run NOTE 2 During test run operation 2 hours off timer activates automatically and remaining time is on remote controller and test run stops 2 later NOTE 3 During test run the indoor liquid pipe temperature is displayed on remote controller instead of room temperature NOTE 4 Depend on a model This function is not available appears when air direction button is pressed however this is not malfunction e 9 9 34 9 1 2 Special Function Operation and Settings for M NET Remote Controller It is necessary to perform group settings and paired settings at making group settings of different refrigerant system
147. rt open in thermistor during the operation the outdoor unit stops once and restarts operation in 3minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts When controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time lt 5106 gt is displayed For 10 minutes after starting compressor for defrosting or for 3minutes after recover of defrosting above mentioned short open are not detected Short 90 C 194 F or more Open 40 40 F or less Connector TH7 contact failure Thermistor wiring disconnection or half disconnection 9 Thermistor failure Multi controller board input circuit failure Check whether the connector TH7 in the multi controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 F 15kO 10 C BO F 9 6kQ 20 C 68 6 3 30 C B6 4 3 40 C 104 F 3 0kO 12345678 Set the SW1 to When the temperature in multi controller board is not an actual temperature replace the multi controller board 42 5 Open 91 9 Short Heatsink temperature thermistor TH8 internal thermistor of power module When controller detects short open in thermistor
148. s Change the indoor unit s LEV opening at Enable Can be set when off OFF Fixing the indoor units linear expansion 12345678 valve opening ju Donat Fix the operation frequency Fix Normal ED ee d Normal Can be set when off at defrost or during operation Switching the target sub cool Enable Normal During the FAN or COOL mode and thermo OFF or OFF in heating operation set the opening of Active Inactive linear expansion valve on indoor unit 261 During the FAN or COOL mode and thermo OFF 1 in heating operation set the opening of linear ex Active Inactive pansion valve on indoor unit 2 SW5 Function switching Change the indoor unit s LEV opening Enable 1 SW5 7 Refrigerant shortage amount is measured during heating operation Refrigerant piping is long etc 2 SW5 8 Countermeasure against room temperature rise for indoor unit in FAN COOL and thermo OFF heating mode x3 Note Except PUMY P48NHMU and PUMY P48NHMU BS DIP SW4 4 for primary heating control Set DIP SW4 4 when power is turned off at unit DIP SW4 4 OFF Disable primary heating function Initial setting SW4 4 ON Enable primary heating function 56 Switch Function Operation in Each Switch Setting ON OFF When to Set Remarks 5 Z o o 8 3 SW6 Function switching Switch of current limitation reading in a different way Enable Normal
149. s multiple outdoor unit A Group settings Enter the indoor unit controlled by the remote controller check the content of entries and clear entries etc B Paired settings Used to set the linked operation of a Lossnay unit 1 Entering address Follow the steps below to enter the addresses of the indoor unit using the remote controller a Group settings Turning off the remote controller Press the ON OFF button to stop operation the indicator light will go off e Changing to indoor unit address display mode If the FILTER and 5 buttons on the remote controller are pressed simultaneously and held for 2 seconds the display shown in Figure 1 will appear Changing address Press the temperature adjustment GOC buttons to change the displayed address to the address to be entered Entering the displayed address Press the TEST RUN button to enter the indoor unit with the displayed address The type of the unit will be displayed as shown in Figure 2 if entry is completed normally If a selected indoor unit does not exist an error signal will be displayed as shown in Figure 3 When this happens check whether the indoor unit actually exists and perform entry again Returning to the normal mode after completing entry Press the FILTER and Sx buttons simultaneously and hold for 2 seconds to return to the normal mode Figure 1 A Group setting display Figure 2 Normal completion of entry Figure 3 Entry error signal moe
150. s is the indoor unit main address plus 100 In this case it should be 101 27 B Example of a group operation system with 2 or more outdoor units and remote controller Shielding wires and address settings are necessary Examples of Transmission Cable Wiring Shielded Wire Sub Remote Controller Address Wiring Method Address Settings a Always use shielded wire when making connections between the outdoor unit OC and the indoor unit IC as well for all OC OC and IC IC wiring intervals b Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block of each outdoor unit OC to terminals 1 and 2 on the terminal 5 on the transmission cable block of the indoor unit IC c Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit IC that has the most recent address within the same group to the terminal block on the remote controller RC d Connect together terminals M1 M2 and terminal S on the terminal block for central control TB7 for the outdoor unit OC e DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control term
151. ssion waves change in case that the transmission data collides mutually It causes to detect error Transmission processor circuit failure When the transmission data has changed by the noise 47 When the transmission line is constructed with the current flowed turn off power supply of outdoor unit indoor unit and lossnay for 2 minutes or more as the same time Then turn on power supply Check the transmitted wave and the noise on the transmission line Abnormal point and detecting method Causes Check points Transmission bus busy error Over error by collision Abnormality when the state which cannot be transmitted by collision of transmission is consecutive for 8 to 10minutes The state that data cannot to be output to the transmission line by the noise happens for 8 to 10minutes consecutively Note Address Attribute displayed on the remote controller shows the controller detecting abnormality The transmission processor cannot be transmitted since a short cycle voltage of the noise etc mixes on the transmission line consecutively The transmission volume increases and cannot be transmitted since the wiring method is mistaken and the routing technique to the terminal board TB3 for the transmission line of the outdoor unit and the terminal board TB7 for centralized control cannot be transmitted The share becomes high since the data exists together to other tra
152. ssor start to operate When bus voltage is abnormal see the table above 1 Check point and check such as input voltage wiring 52C relay To check ACTM itsef see 9 9 Test point the item of ACTM In case of ACTM failure also check if there is the breaking of a wire in rush current protect resistor As for PUMY P48NHMU q1 BS rush current protect resistor is resistor RS not mounted on the board For PUMY P36NHMU P48NHMUA resistor RS1 is mounted on noise filter circuit board Temperature of heatsink Abnormal if heat sink thermistor TH8 detects temperature indicated below 85 C 185 F The outdoor fan motor is locked Failure of outdoor fan motor path is clogged Rise of ambient temperature Defective thermistor Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit DO Check outdoor fan Check air flow path for cooling Check if there is something which causes temperature rise around outdoor unit Upper limit of ambient temperature is 46 C 115 F Turn off power and on again to check if 4230 is displayed within 30 minutes Check thermistor lt TH8 gt temperature by micro computer 9 Replace outdoor power circuit board Replace outdoor controller circuit board 1 Power module Check abnormality by driving power module in case overcurrent is detected Outdoor stop valve is closed Decrease of power supply volt
153. t Tools and materials Gauge manifold Charge hose Use Air purge refrigerant charge and operation check R410A tools Tool exclusive for R410A Can R22 tools be used 29 0 1 9 64 27 0 36 0 Can R407C tools be used Tool exclusive for R410A x Gas leak detector Refrigerant recovery equipment Gas leak check Refrigerant recovery Tool for HFC refrigerant Tool exclusive for R410A Refrigerant cylinder Refrigerant charge Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alkylbenzene oil minimum amount Ester oil ether oil O Alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R410A x Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x x Vacuum pump Vacuum drying and air purge Tools for other refrigerants can be used if equipped with adop ter for reverse flow check A Usable if equipped with adopter for rever se flow A Usable if equipped with adopter for rever se flow Flare tool Flaring work of piping Tools for other refrigerants can be used by adjusting flaring dimension A Usable by adjusting flaring dimension A Usable by adjusting flaring dimension Bender Bend the pipes Tools for other refrigerants can be used
154. tch Setting Switch Function Remarks ON OFF When to Set SW U1 Initial settings 1s digit SW U2 10ths digit 907 af SOA eo Before turning e 975 975 the power on Swu2 SWUt SWU2 SWUI 10ths digit 1s digit 10ths digit 1s digit Rotary switch SW Digital Can be set Initial settings i either during Switching OFF operation or not OFF 12345678 12345678 Selects operating system startup Doesn t startup Start up Before turning the lt lnitial settings gt Connection Information Clear Switch Clear Do not clear Power on SW Abnormal data clear switch input Clear abnormal data Normal PEE IOON any time afer OFF During compressor PUNGIN Pump down Run adjustment mode Normal running 4 oe Switching Auto change over from Remote controller Enable Disable Before turning the power on OFF from outdoor unit ON OFF Any time after the Initial settings Test run power is turned on Mode setting Heating Cooling lt MODEL SELECT gt Initial settings ew MODELS Set for each capacity Before the power Model PUMY P36NHMU 5 Switching c 3 5 5 PUMY P48NHMU n 12 6 Pressure limitation value change Enable Normal Initial setting
155. tecting method Causes Check points Pressure sensor 63HS When detected pressure in high pressure sensor is 1 MPa 145PSIG or less during the operation the compressor stops and restarts operation in 3 minutes When the detected pressure is 1 MPa 145PSIG or less at just before of restarting the compressor stops due to detecting abnormality In this time lt 5201 gt is displayed For 3minutes after starting compressor for defrosting or for 3 minutes after recover of defrosting abnormality is not determined as abnormality Q High pressure sensor failure Internal pressure decrease by gas leakage Connector contact failure disconnection Multi controller board input circuit failure Check the high pressure sensor Check the internal pressure Check the high pressure sensor Check the high pressure sensor Current sensor error Abnormal if current sensor detects 1 5A to 1 5A during compressor operation This error is ignored in case of SW7 1 ON Abnormal if input current exceeds 38A or 34A continuously 10 seconds Current sensor on noise filter board detects input current Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board Decrease of power supply voltage Correct the wiring U V W phase to compressor Outdoor power circuit board Replace outdoor power circuit board Check the fac
156. the transmission cable block of the indoor unit IC Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit IC that has the most recent address within the same group to the terminal block on the remote controller RC Connect together terminals M1 M2 and terminal S on the terminal block for central control TB7 for the outdoor unit OC DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the terminal S on the power supply unit with the earth g Set the address setting switch as follows Unit Range Setting Method IC Main 01 to 00 Use the smallest address within the same group of indoor units IC Sub 01 to 50 Use an address other than that of the IC Main in the same group of indoor units This must be in sequence with the IC Main Outdoor Unit 01 to 100 Use the smallest address of all the indoor units plus 50 address automatically becomes 100 if it is set as 01 50 Main Remote Controller 101 10 150 Set at an IC Main address within the same group plus 100 Sub Remote Controller 151 to 200 Set at an IC Main address within the same group plus 150 MA Remote Controller mE Unnecessary address setting Necessary main sub setting h The group setting operations among the multiple indoor units is done by the remote controller RC after the electr
157. ti controller board FAN MOTOR MF1 2 gt rotation signal 7 7 LPCS5IT_ DCO 15V pulse 4 TESTS POINT Inverter lt control voltage 6 6515 0 65 TESTS POINT Vsp pos lt power supply gate drive 5 4 082 DC15V 4 TESTS POINT Vcc Motor Ground 4 3 TESTS POINT 2 Voc J p Z lt power supply inverter drive 1 1 1 1 E 0510 500 TESTS POINT Fg Power board CHHCK POINT CHECK POINT TESTS POINT TESTS POINT 8 Vsp FAN MOTOR MF2 ion Si gt rotation signal 7 7 1 512 DC0 15V pulse 4 TESTS POINT Vp invorter voltsge 6 5516 0 65 TESTS POINT 8 Vsp driver lt power supply gate drive 5 Motor __ Ground 4 TESTS POINT 0 Voc lt power supply inverter drive ERA CNF2 TESTS POINT D V CHECK POINT The inverter control P C board is built in the fan motor of this outdoor unit When F500 that is on controller board is blown change the fan motor and multi controller board at the same time F500 is impossisble to changae For outdoor unit there 2 fan motors and down MF1 MF2 it is possible to connect to either CNF1 or CNF2 on the board It is abnormal when the abnormlity is detected from either both fan motors or only one side 60 Check method of multi controller board C Multi controller board
158. ti corrosion fin treatment Fan Fan drive Propeller fan x 2 Fan motor output kW 0 086 0 086 Airflow m min CFM 100 3 530 Dimensions HxWxD mm 950 37 13 32 D mm 1 330 30 13 1 3 16 H mm in 1 350 53 5 32 Weight kg Ibs 130 287 Refrigerant R410A Charge kg lbs 8 5 18 7 Oil Model L oz 2 3 73 FV50S Protection High pressure protection HP switch devices Compressor protection Discharge thermo Over current detection Fan motor protection Overheating Voltage protection Total Piping length Max m ft 120 394 Farthest m ft 80 262 Max Height difference m ft 30 10011 Chargeless length m ft 50 165 Liquid dmmy inch 9 52 3 8 Piping diameter Gas gmmlinch 15 88 5 8 cool 5 46C DB 23 115 F DB 2 Guranteed operation range dn 9 heat 18 15 C WB 0 60 F WB Rating conditions Note 1 20m 70ft In case of installing outdoor unit lower than indoor unit Cooling Indoor 0 8 26 7 W B 19 4 C D B 80 F W B 67 F Outdoor D B 35 C D B 95 F Heating Indoor D B 21 1 C D B 70 Outdoor D B 8 3 C W B 6 1 C D B 47 F W B 43 F 2 10 46 C 50 115 F DB In case of connecting PKFY P06 P08 type indoor unit 3 Electrical data is for only outdoor unit In case of connecting 2
159. to the outdoor control ler circuit board CNAC CNAC1 208 230V AC Connect to the M NET power 2 circuit board Connect to the earth Current tranceformer Primary current CN5 Primary current EI Connect to the Connect to outdoor power the earth circuit board 5 Voltage of 208 230V is input Connect to the terminal block TB1 70 Transmission power board PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P36NHMU PUMY P36NHMU BS CN2 Connect to the outdoor multi controller board Q G 24 30V DC 24 30V DC CN1 Connect to the outdoor noise filter circuit board 208 230V M1001 PD 001 2ABCD YAMASE Electric WARNING FOR CONTINUED PROTECTION AGAINST FIRE REPLACE Active filter module PUMY P48NHMU PUMY P48NHMU BS 48 Connect the out PUMY P48NHMU BS edgar power circuit 11 12 board TABP2 Connect to the DCL Reactor m WV 22 22 2 2 22177 A 2 227 Connect to the out Connect to Not used the outdoor Connect to the 52C Doard TABN1 0 15V DC power circuit Control signal board TABN2 Not used 6 0 Control signal Tester check points of Acive filter module Eror condition Normal value reference Symptom when the unit is in trouble
160. to the lossnay 2 When synchronized operating with other refrigerant system lossnay the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes and detects abnormality Contact failure of lossnay or indoor unit transmission line Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or lossnay Since the address switch was changed with the current passed the unit in the last address does not exist amp Since the fresh master lossnay address are changed after synchronized setting of fresh master lossnay by the remote controller abnormality is detected at transmitting from the indoor unit 50 Abnormal point and detecting method Causes Check points No response Though there was a replay ACk of having received signal from the other side it is the abnormality when the response command does not return The sending side detects the abnormality continuously six times every 30 seconds Note Address Attribute displayed on the remote controller shows the controller which did not response D Transmission repeats the failure by the noise etc Decline of transmission voltage and signal by transmission line tolerance over furthest point 200m 6561 Remote controller line 12m 39ft Refer to 8 3 9 Declin
161. trol gt DCL Reactor Connector lt To Noise Filter Circuit Board gt P B Power Circuit Board CNDC Connector lt Power circuit board gt Connection Terminal lt U V W Phase gt CN2 Connector lt To Power Circuit Board gt TAB S T Terminal lt L N Phase gt CN4 Connector lt To Power Circuit Board gt TAB P P1 P2 Terminal lt DCVoltage gt CN40 Connector lt Centralized Cotrol Power Supply gt TAB N N1 N2 Terminal lt DCVoltage gt CN41 Connector lt For storing Jumper Connector gt CN2 5 Connector TH3 Connector lt Thermistor gt CNDC Connector TH4 Connector lt Thermistor gt CNAF Connector TH7 6 Connector lt Thermistor gt IPM Inverter 63HS Connector lt High Pressure Sensor gt LED1 Light Emitting Diodes Inverter Control Status 63H Connector High Pressure Switch 63L Connector lt Low Pressure Switch CNF1 CNF2 Connector Fan Motor gt 2184 Connector Four way Valve SV1 Connector Bypass Valve SS Connector For Option CN3D Connector lt For Option gt CN3S Connector lt For Option gt CN3N Connector lt For Option gt CN51 Connector For Option X501 505 Relay Caution for electrical work Use copper supply wires Cautions when Servicing N WARNING When the main supply is turned off the voltage 340 V in the main capacitor will drop to 20 V in approx 2 minutes input voltage 240 V When servicing make sure that LED1 LED2 on the outdoor circuit board goes out and then wait f
162. uone4edo 21 00011111 9 S z 141 Aejdsiq 979562 LMS 75 10181191 106496 eunsseJd ufiu pue ejep 29 jooogns 1oopino ejdsiq 6 666 6 66 25 1oopino 01100000 0 52 si s 29 6 666 6 66 Do LZHL 90 exe LZHL OLOLLLLO 01011101 LZHL exei LZHL 01011100 Do exelul LzH L LOI 01011011 2 ZZHL 521 01011010 2 pinbr1 01011001 2 pINbIT ZZH L 01 01011000 2 01010111 PINDIT ZZHL 121 01010110 01010101 SEDO EZHL 01010100 2 8 6 EDI OLOLOOLL 2 8 SOI 5 5 88 6 221 01010010 25 8 6 LOI 01010001 6 666 6 66 Do 01010000 edid 01001110 duiej 100pinO HLL 01001101 Oe L3 9H L 01001100 Oe PL VHL 01001011 2406 0 105495 9 0859 0 0 01001010 100 415 J00pjno Jo asind Kejdsiq asind A31
163. use Wiring digram Pee H1 H2 Heater 881 26 26H Overheat protection Control board pun thermostat 88H Electromagnetic contactor CN24 2 SAFETY PRECAUTION 2 1 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes Do not use refrigerant other than R410A Avoid using thin pipes If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc Make sure that the inside and outside of refrige rant piping is clean and it has no contamination such as sulfur hazardous for use oxides dirt shaving particles etc In addition use pipes with specified thickness Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging If dirt dust or moisture enters into refrigerant cycle that cause deterioration of refrigerant oil or malfunction of com pressor Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following too
164. utdoor controller board It is possible to set it to the following power sonsumption compared with ratings by setting SW1 2 Outdoor controller board DIP SW8 1 SW1 SW2 Function Silent mode OFF ON Silent mode operation Demand control ON OFF OFF 10096 Normal ON OFF 7596 ON ON 5096 OFF ON 096 Stop 58 9 7 HOW CHECK THE PARTS PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU PUMY PA48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P36NHMU PUMY P36NHMU BS Parts name Check points Thermistor TH3 Disconnect the connector then measure the resistance with a tester Outdoor pipe At the ambient temperature 10 C 30 50 F 86 F Thermistor TH4 Discharge Normal Abnormal Thermistor TH6 lt Low pressure saturated d temperature gt TH3 Thermistor TH7 TH6 4 3kQ 9 6kQ Open or short lt Outdoor gt ae Thermistor TH8 lt Heatsink gt TH8 39kQ 105kQ Fan motor MF1 MF2 Refer to next page Solenoid valve coil Measure the resistance between the terminals with a tester lt Four way valve gt At the ambient temperature 20 C 68 F 2154 Abnormal 1190 100Q Open or short Motor for compressor Measure the resistance between the terminals with a tester MC U Winding temperature 20 C 68 F Normal Abnormal 0 1880 Open short Solenoid
165. valve coil Measure the resistance between the terminals with a tester lt Bypass valve gt Surrounding temperature 20 C 68 F SV1 Normal Abnormal 1183 1000 Open or short Rush current protect Measure the resistance between the terminals with a tester As for PS6NHMU and RE BS e Ea ji ds only al 5 protect resistor is mounted on noise Sens Opener short filter curcuit board 200 5 10W In case of open failure check ACTM with a tester as well Refer to 9 9 Test point the item of ACTM 52C relay 52C Measure the resistance between the terminals with a tester As for and Normal Abnormal P48NHMU BS 52C relay is mounted on noise filter curcuit board Coil A1 A2 Reference value 1550 typ Reference value 1 45kQ Open or short only PUMY P48NHMUw BS Reactor DCL Measure the resistance between the terminals with a tester Normal Abnormal Reference value 0 040 Open or short Because the resistor of the reactor is little it is difficult to determine if it is short or normal with an ordinary tester 59 Check method of DC fan motor fan motor outdoor controller circuit board Notes High voltage is applied to the connecter CNF1 2 for the fan motor Give attention to the service Do not pull out the connector CNF1 2 for t
166. valve coil SV1 and bypass valve 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove 3 right side panel fixing screws 5 x 10 in the rear of the unit and remove the right side panel 4 Remove the bypass valve coil fixing screw M4 x 6 5 Remove the bypass valve coil by sliding the coil upward 6 Disconnect the connector SV1 white on the Multi controller circuit board in the electrical parts box 7 Recover refrigerant 8 Remove the welded part of bypass valve Note 1 Recover refrigerant without spreading it in the air 3 5 Note 2 The welded part can be removed easily by 63H removing the right side panel coil fixing screw Bypass valve 10 Removing the high pressure switch 63H and coll SV1 low pressure switch 63L 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Remove the electrical parts box See photo 4 m High pressure 4 Remove 3 right side panel fixing screws 5 x 10 in the 17 sensor 63HS rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure switch and low pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch and low pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by rem
167. ve thermistor lt Outdoor gt Electrical Thermistor parts box lt TH6 gt 5 Removing the thermistor lt Outdoor gt TH7 Photo 6 48 1 Remove the service panel See figure 1 2 Remove the top panel See figure 1 3 Disconnect the connector TH7 red on the Multi controller board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See photo 4 b Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Low pressure saturated temp TH6 since they are combined Lead wire of thermistor Sensor holder together lt Outdoor gt TH7 Refer to No 4 above to remove thermistor lt Low PUMY P36NHMU P48NHMU pressure saturated temp gt Lead wire of thermistor Outdoor TH7 Sensor holder OPERATING PROCEDURE PHOTOS 6 Removing the thermistor lt Outdoor pipe gt TH3 and Photo 7 thermistor lt Discharge gt TH4 Thermistor 1 Remove the service panel See figure 1 lt Outdoor pipe gt 2 Disconnect the connectors TH3 white and TH4 white on the Multi controller board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electrical parts box 4 Pull out the thermistor lt Outdoor pipe gt TH3 and thermistor lt Discharge gt TH4 from the sensor holder Therm
168. voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency Outdoor fan motor Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnormal if 100 rpm or below detected continuously for 15 seconds at 20 or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board D Check or replace the DC fan motor Check the voltage of the outdoor circuit controller board during operation 9 Replace the outdoor circuit contrlooer board when the failure is still indicated even after performing the remedy 1 above Room temperature thermistor TH21 When controller detects short high temp open low temp in thermistor during the operation the operation stops and the operation changes to protect mode of restarting in 3minutes If the thermistor does not recover in 3minutes the operation stops due to detecting abnormality In this time 5101 is displayed Then if the thermistor recover in 3minutes it operates normally Short Detected 90 C 194 F or more Open Detected 40 C 40 F or less Connector CN20 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Detecting circuit
169. y mode Abnormal when detecting that the drain pump turns on and off again within 1 hour after the detection of water leakage suspensive abnormality and repeats the detection twice lt 2500 gt is displayed The unit continues to detect abnormality while turned off To release water leakage suspensive abnormality When not detecting that the drain pump turns off and on within 1 hour after detecting suspensive abnormality When turning to cooling operation or dry operation Defective drain Clogged drain pump Clogged drain pipe Adverse flow of drain in other units Defective moving part of float switch Foreign matter on the moving part of float switch ex sludge etc Defective float switch Detected that liquid pipe temperature room temperature 10deg 18 F Check the drain function Check moving part of float switch Check the value of resistance with the float switch ON OFF Operation mode When drain pump turns on as float switch detects to be in the water except during cooling dry mode 6 min Drain pump ON OFF Float switch ON 6 min lt gt 15 sec 15 OFF 15 sec A In the water In th Water leakage suspensive abnormality m gt 15 sec gt 15 sec In the air air In the water 1 115 sec 1 In the water Water leakage abn
170. y recovers from the malfunction that happens by chance When same abnormality occurs again it is defective of the controller Abnormal point and detecting method Causes Check points No ACK Acknowledgement Abnormality which controller of the sending side detects when there is no answer from other side though data was transmitted once It is detected 6 times every 30seconds continuously Note Address Attribute displayed on the remote controller shows the controller which did not send back replay When the cause of displayed address and attribute is on the outdoor unit side The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the outdoor unit When the cause of displayed address and attribute is on the indoor unit side The remote controller detects when there is no reply ACK on transmitting from the remote controller to the indoor unit Factor that does not related to origin Since the address switch was changed with the current passed the unit in the last address does not exist Decline of transmission voltage and signal by transmission line tolerance over furthest point 200m Remote controller line 12m Refer to 7 3 Decline of transmission line voltage and signal by unmatched kind of line Shield line CVVS CPEVS Line diameter 1 25 mm or more Decline of transmission line vo
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technical & service manual - Mitsubishi Electric Cooling & Heating

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technical &amp; service manual - Mitsubishi Electric Cooling &amp; Heating

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technical & service manual - Mitsubishi Electric Cooling & Heating