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TECHNICAL & SERVICE MANUAL

1. er TH W is the switch position ag Hi oh d CNLVB SWU2SWU SW5 SW6 7 131 41221 RED O 6 5 TH7 6 THS TH4 WED RED BLU RED S gt WHT RED WHT WHT 13131 31 5 Swi SW8 SW2 13 2 2 631 55 54 SW4 SW3 SW7 us ED cur GS s METER m 63H CN2 WHT LED1 LED2 3 YLW 1 WHT 7 4 2 HH BH 1CN24 999999 99 2 a TRANS LED3 V WHT CNDC 41 5 BLK PNK 1 CN102 WHT 3 5 8 8 5 WHT E x 2 x CNS1 CNS2 4 7 1 YLW WHT WHT ES 3 15263 21543 SV22 h svi 3 ss a2tlicnac 1 2 12 4 14 1 2 5 BLK GRN EA BLU H WHT EA WHT GSH RED 6 14 3333 5655 4 2154 svi 2 2 4 511 053 BLU 6 4 TB3 o it DC RED2 216 Nj2 AE al M oe 6 ar N ito CN2 2 M RED Hel WHT a PM Jk a 4 Er d BE
2. PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS jeuruue lt 26 2 1 gt 2 lt 06 2 gt 95 lt gt 0 lt 2 1 gt 82 lt 26 6 2 gt 6 8 EM 0LIN 40g 9104 EAO 96 21 2 lt 26 2 gt 94 lt ZE GL L gt LE lt 91 6 71 gt 025 lt 9 6 gt 06 lt 6 gt 066 lt 8 gt 0 og uonep ejou peuojou PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS gio lt 876 522009 SAL S re way lt 8 9 gt 9 1 19 your uiu m _ lt eevee s gt lt zevee s gt lt zerez s gt lt 2 128 gt lt 9 46 1206 gests B fe exse B N adn d Sri S ozz 5 B te ed amp Budid 335 525 E P 902295 vets PP B EN E lt 26 61 2 gt 07 5 gt aloy z 1 i 25
3. Parts of PUMY P36 48NHMU are set as the same service parts as PUMY P36 48NHMU BS RoHS Part No Part Name Speci fication Q ty set PUMY P BS 36NHMU 36NHMUR1 48NHMU2 48NHMUR3 36NHMUR4 48NHMUR4 Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty E33 662 SIDE PANEL L E03 691 FAN GRILLE E06 667 FRONT PANEL E26 686 BASE ASSY E19 130 MOTOR SUPPORT E01 655 HANDLE E14 658 COVER PANEL FRONT E24 658 COVER PANEL REAR E01 617 CONDUIT PLATE E57 661 SIDE PANEL R E06 668 SERVICE PANEL E07 698 REAR GUARD E29 641 TOP PANEL 02 655 66 HANDLE Li2 N 98 ee 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 5 6 Need 2 pieces DRAIN PAN
4. Q ty set Part No Part Name Specification pumvpas PUMYPGP piagram NHMU BS NHMU Bs Drawing symbol RO1 E04 SIDE PANEL L 1 1 T7W E02 FAN GRILLE 2 T7W E04 FRONT PANEL 1 R01 E18 BASE ASSY R01 E26 BASE ASSY 801 E19 MOTOR SUPPORT RO1 30L HANDLE T7W E01 COVER PANEL FRONT 1 Including CONDUIT PLATE 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 GUARD R01 E06 TOP PANEL R01 E00 HANDLE OC366H 93 PARTS LIST non RoHS compliant Part numbers that are circled are not shown in the figure Part No Part Name Specification Q ty set PUMY P48NHMU PUMY P48NHMU BS Remarks Drawing No Wining Diagram Symbol 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 2 5 00 8 1000 6 3 32 x 1 32 x L 39
5. PUMY P36NHMU BS PUMY P36NHMUR1 BS _ 6 4 85 PUMY P48NHMU BS PUMY P48NHMUR3 BS X PUMY P48NHMUR4 BS SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block Power Supply Power Circuit Board SW6 Switch lt Function Selection gt Terminal Block Communication Line TABU V W Connection Terminal lt U V W Phase gt SW7 Switch lt Function Selection gt Terminal Block lt Centralized Control gt TABS T Connection Terminal lt L N Phase gt SW8 Switch lt Function Selection gt Motor For Compressor 1 2 Connection Terminal lt DC Voltage SWU1 Switch Unit Address Selection 1st digit Fan Motor TABN1 N2 N Connection Terminal lt DC Voltage SWU2 Switch lt Unit Address Selection 2nd digit gt Solenoid Valve lt Four Way Valve gt 0 2 0 3 _ Diode Bridge CNLVB Connector lt To N F Board CN52C gt High Pressure Switch IPM Power Module Symbol of Board is CNLVB Low Pressure Switch Noise Filter Circuit Board ss Connector lt Connection For Option gt High Pressure Sensor Connection Terminal lt L Phase gt CN3D Connector lt Connection For Option gt Solenoid Valve lt Bypass valve gt Connection Terminal lt N Phase gt CN3S Connector lt Connection For Option gt TH3 Thermistor lt Outdoor Pipe gt Connection Terminal lt Ground gt CN3N Connector lt Connection For Option gt TH4 Th
6. Multiple indoor units operated together by 1 remote controller he 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 1 through 3 above are possible OC366H 30 Name Symbol and the Maximum Units for Connection Permissible Lengths Prohibited items Longest transmission cable length Li L2 200 m 656 ft 1 25 mm AWG16 MA remote controller cable length 1 2 200 m 656 ft 0 3 1 25 mm AWG22 to AWG16 The MA remote controller and the M NET remote controller cannot be used together with the indoor unit of the same group 1 2 Longest transmission cable length The same as above MA remote controller cable length 23 24 5 6 S 200 m 656 ft 0 3 1 25 mm AWG22 to AWG16 Three MA remote controller or more cannot be connect wit
7. 5 TO INDOOR UNIT RS ACTM CONNECTING WIRES DC 30V Non polar TB7 Mo Jorn M2 sog FOR CENTRALIZED CONTROL DC 30V Non polar OLO N lono CNAC2 5 RED RED T11 EI TABN2 NR OLI ON z EG WHY Up WHT BLK SX FOWER SUPPLY NO FUSE AC208V 230V BREAKER 60Hz 80 2 GR lt 1 MODEL SELECT MODELS Sw4 PUMY P4sNHMU 2 1234 black square indicates a switch position Note Only PUMY P48NHMU PUMY P48NHMU BS SW4 4 for primary heating control Set DIP SW4 4 when power is turned off at unit SW4 4 OFF Disable primary heating function Initial setting DIP SW4 4 ON Enable primary heating function OC366H 21
8. E sezo 3 r le e e 40 41 Centralized control power supply For storing jumper connector selection CNS2 Transmission wire of centrallized control CNS1 Indoor outdoor unit connecting wire CN2 Connect to the outdoor TB Power circuit board gt Transmitting signal to the multi controller board 0 5V DC Zero cross signal 0 5V DC 18VDC ACTM power supply 16V DC Inverter drive power supply 16V DC Inverter drive power supply E T PC452 1 possi 1 eC 8 3 lt a e 55 424 9 d x E Power supply for Four way valve ar iss 52 _ 5 A controller board a se o dH H 2 gt 9 2 5 i 3 E B lt 8 04 9 5 5 R 2 of i 5 59 d 5 ze ud ie E jam o UN E A A osx sis 1 st x a le 2 E Xu
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10. 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 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 LED2 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 drive state of the controller in the outdoor unit SV1 are turned during cooling operation Bit 1 2 3 4 5 6 7 8 123 45 67 8 atin Compressor EF am Indication 001089807 526 2184 svi SV2 Always lit H H When faults requiring inspection occurs SS LED alternately indicates the inspection code and the location of the unit in which the fault has occurred
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14. LEV inlet 29 84 32 90 Heat exchanger inlet 11 52 12 54 5 2 2 Heating operation Operation Outdoor unit model PUMY P36NHMU PUMY P48NHMU Ambient tem Indoor DB WB 21 1 C 70 F 21 1 C 70 F perature Outdoor 8 3 C 6 1 C 47 F 43 F 8 3 C 6 1 47 F 43 F No of connected units Unit 3 4 Indoor unit No of units in operation 3 4 Operating Model 12 12 conditions Main pipe 5 16 3 8 5 16 3 8 Piping Branch pipe m ft 2 5 8 1 4 2 5 8 1 4 Total pipe length 12 5 41 15 49 1 4 Fan speed Hi Hi Amount of refrigerant kg 165 07 8 5 18 8 5 18 Electric current A 16 5 20 8 Outdoor unit Voltage V 230 230 Compressor frequency Hz 65 82 LEV opening Indoor unit Pulse 264 312 Pressure High pressure Low pressure MPa psi 2 83 0 71 411 103 3 09 0 65 449 94 Discharge 72 162 84 183 Heat exchanger outlet 2 36 3 37 Outdoor unit Accumulator inlet 1 34 2 36 each Compressor inlet F 3 87 4 39 Compressor shell bottom 75 167 87 189 Indeorunit LEV inlet 42 108 42 108 Heat exchanger inlet 64 147 70 158 OC366H 13 5 3 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 3 1 PUMY P36NHMU BS PUMY P36NHMUR1 BS
15. 208 230V 10 AC NO NI A 12 208 230V 10 AC TBI Power board Eea U V 10 180 10V 180V V W 10V 180V Circuit diagram conv CNDC circuit PNK 4 1 WHT See test point 1 De 3 on OC366H 61 Check method of noise filter circuit board Noise filter circuit board check 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 10 C Check the breaker and power supply Yes Is the voltage of CNAC RED on N Em multi controller board CNAC RED 9 2 208 230V 10 AC 15 the voltage between M1 and 2 on No q 2 MANET power board M NET transmission 24 30V DC Check noise filter board Yes Turn off the incoming power supply ls the 52 on multi gt and check the resistance of RS1 1 As for PABNHMU 52C relay and RS ee the Noise filter board 1 are not mounted on noise filter circuit board Yes No 4 normal Check wiring 2 Rede ongme Check power board Y
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17. LZHL 991 OLOLLLLLE exelu LZH L OLOLLLLO OLOLLLOL Do LZHL 201 exei LZH L 29 OLOLLLOO Do FOI OLOLLOLL 2 pinbr 521 0011010 Oo 22 1 01011001 2 pINDIT ZZH L 551 01011000 Do pinbr zzH L 201 OLOLOLLL PINDIT SZH L 121 OLOLOLLO OLOLOLOL seo ezH L 01010100 25 EDI 01010011 Do 901 9 221 01010010 LOI 01010001 6 666 6 66 Do jewod gH L 01010000 2 edid 100pino eH 1 OLOOLLLO 01001101 Oo 13 9HL 01001100 Oe PL YHL OLOOLOLL 1009 ainsseud yBiy 01001010 100 315 4006100 Jo asind Aejdsig BuiuedQ A31 59 01001001 asind A31 21 01001000 BuiuedQ A31 29 01000111 asind A31 29 01000110 BuiuedQ A31 1901 01000101 sdeis jo e dsiq 91 0 002 deis 04002 u33 01000011 1equinu deis 01000010 196401 05101 992 0 1eDJe 01000001 Aoua
18. Connect to the ACTM 1 5 1 Connect to 52C PABNHMU Connect to ACTM P36NHMU P48NHMU TABU V W TABN2 SC N2 Connect to the compressor MC Connect to the ACTM N2 Voltage among phases 10V 180V AC 67 Outdoor noise filter circuit board PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU PUMY P48NHMU BS LO NO Voltage of 208 230V AC is output Connect to the outdoor power circuit board TABS TABT 2 208 230 Connect to the outdoor control ler circuit board CNAO 1 208 230 Connect to the M NET power cir cuit board 1 oY o Lu EI Connect to the earth ZA 5 66 22 lt uy LI NI 5 Connect to the outdoor power circuit board CN5 gt CN Current transformer Primary current RGOON265B NI Voltage of 208 230V AC is input Connect to the terminal block TB1 68 Outdoor noise filter circuit board PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS 2
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20. 7 WIRING DIAGRAM PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU PUMY P48NHMU BS SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block Power Supply MULTI B Multi Controller Board N F Noise Filter Circuit Board TB3 Terminal Block lt Transmission gt F1 F2 Fuse lt 6 3A gt Connection Lead lt L Phase gt TB7 Terminal Block Centralized Control F500 Fuse lt 3A gt NI NO Connection Lead lt N Phase gt MC Motor for Compressor Switch Display Selection El Connection Terminal lt Ground gt MF1 MF2 Fan Motor Sw2 Switch Function Selection 1 2 Connector 2154 Solenoid Valve Four way valve SW3 Switch lt Test Run gt CN5 Connector SV1 Solenoid Valve Bypass valve 5 4 Switch Model Selection gt Transmission Power Board TH3 Thermistor lt Outdoor Pipe Temperature gt SW5 Switch lt Function Selection gt CN1 Connector To Noise Filter Circuit Board 4 Thermistor lt Discharge Temperature 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 lt Function Selection gt TH8 Thermistor lt Heatsink gt SWU1 Switch lt Unit Address Selection 1s digit gt 63HS High Pressure Sensor Discharge Pressu
21. 88 Model name 13 PARTS LIS Tile RES 94 IA ROHS PARTS STe e 96 15 OPTIONAL 6 1 1111 99 OUTDOOR UNIT 6 CITY MULTI Intertek 3 1 TECHNICAL CHANGES PUMY P36NHMUR1 gt PUMY P36NHMUR4 PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMUR3 gt PUMY P48NHMUR4 PUMY P48NHMUR3 BS gt PUMY P48NHMUR4 BS Outdoor controller board has been changed S W version PUMY P36NHMU gt PUMY P36NHMUR1 PUMY P36NHMU BS gt PUMY P36NHMUR1 BS PUMY P48NHMU2 gt PUMY P48NHMUR3 PUMY PA8NHMU BS gt PUMY P48NHMUR3 BS THERMISTOR has been changed Discharge thermistor Compressor thermistor Compressor has been changed PUMY P48NHMU PUMY P48NHMU PUMY P48NHMU BS PUMY P48NHMU BS Compressor MC oil have been changed Ester 6 ANBS33FDHMT Ether oil FV50S Electrical parts have been changed Multi controller board MULTI C B Noise filter circuit board N F Active filter module ACTM Relay 52C Resister RS including N F PUMY P48NHMU gt PUMY P48NHMU PUMY P48NHMU BS gt PUMY P48NHMU BS Primary heating ON OFF control has been added AUXILIARY HEATING ON OFF CONTROL SET UP 1 Auxiliary heating operation controls another heat source that depends on the main system s op
22. Bypass valve 9 I zoso 1004 uy i 2 LI je 2194 e gt BLU n 8j 0708 Ez 5 8 g 5 Lig E deo OFRE O AAA BW Vcc TEST Vse TEST POINTG voltage between pins of C515 and C516 DCOV when stopped DC1 6 5V when operated Same as CNF1 2 OC366H lo Voltage between pins of Tee 57 e C82A DC15V E 8 Same as CNF1 2 Jo K E Ea i 52 relay signal 2 Voc TEST POINTO 557 Connect to fan motors Voltage between pins of CNDC DC280V 350V C510 DC280V 350V DC280V 350V 6 0 DC15V Same as CNF1 2 O DCO 6 5V DC15V when stopped DCO0 15V pulse when operateg CNDC and C510 have the same voltage Also possible to check at self check No 45 SW1 10110100 66 Outdoor power circuit board PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS CN2 Connect to the outdoor controller circuit board CN2 Transmitting signal to the outdoor controller circuit board 0 5V DC Zero cross signal 0 5V DC Brief Check of POWER MODULE 1 Check of POWER MODULE Q Check of DIODE
23. CO N CO st T A A A A A A gt gt gt gt gt gt 222222 RoHS PARTS LIST Part numbers that are circled are not shown in the figure RoHS Part No Part Name Specification Q ty unit PUMY P BS 36NHMU 48NHMU 36NHMUR1 48NHMUR3 36NHMUR4 48NHMUR4 Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty T7W E27 763 FAN MOTOR 2 2 MF1 2 R01 E57 221 FAN MOTOR MF1 2 R01 E12 115 PROPELLER FAN R01 E09 097 NUT T7W E07 413 CHARGE PLUG T7W E12 413 CHARGE PLUG 0 00 0 0 0 T97 415 755 COMPRESSOR ANB33FDHMT Including RUBBER MOUNT T97 415 779 COMPRESSOR ANB33FDSMT Including RUBBER MOUNT T7W E04 410 STOP VALVE 3 8 T7W E06 411 BALL VALVE 5 8 R01 E28 201 THERMISTOR COMPRESSOR R01 E44 440 ACCUMULATOR T7W E02 490 OIL SEPARATOR R01 E26 425 CAPILLARY TUBE 2 5 0 8 1000 392 132 39 1 2 R01 E07 208 H P SENSOR 63HS R01 E00 209 LOW PRESSURE SWITCH 63L T7W E03 428 BYPASS VALVE T7W E17 242 SOLENOID COIL BYPASS VALVE SV1 T7W E18 242 SOLENOID COIL 4 WAY VALVE 2154 T7W E05 403 4 WAY VALVE R01
24. 104 990 uun Joopino MS 5 MS SSeJppy go 19102400 amp llonuoo yo 19102000 Jejouoo jo 22lloauco 01 5 a yun Ry 195 i j00pui pue 100pino Soy 92 ERE i 1 uoissiusue v i MS MS SSeuppy 500 00 gc 500 oc 100 jun jun yun jun x uoissiusuei Jejonuoo 1 104 190 d Joopino juowebeuew pezijenueo 104 104 24 66 8 2 REFRIGERANT SYSTEM DIAGRAM PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS Refrigerant flow in cooling Refrigerant flow in heating 2 Pressure sensor Service 63 5 Thermistor TH7 Stop valve High pressure o
25. Je 9 dwa umes LOLLLOLO dwa LOLLLOOL 9 0Z P 2 01 2 2 0 4 221 8 2 0 5 gt 5 O 21 pue 20 5 gt 9 gt 0 gt 852 21 dwe Bunjes 10111000 9 9 LOLLOLLL 2 3 dwa Buneeu LOLLOLLO 9 2 dwa Bunies LOLLOLOL JO SIWU9Y edid pinbi jo ejdsiq 26 58 1 s jpejyoeuuoo jou s ueuM 6 666 6 66 821 0110100 21 LOLLOOLL pINDIT 921 01000 4 pinbr1 991 10110001 pinbr 10110000 do 91 LOLOLLLL SO ON e dsiq eyep z uo 819651 LMS 78 66 euin je HS OS jo Aejdsiq 6 666 6 66 HS OS 801 LLLLOLLO Oo Ayeuuouqe ye HS OS Z9I 0 Oe Ayeuuouqe HS OS 951 LLLLOLOO Ayyewuouge aul ye 400pu asjnd
26. P 33761507 o on kn 76 noyoou lo b 5 els A RR Poke Buidid wonog 5 gt 5B BS r S lt 8 gt 22 2 ________ Pp noyoouy lt 9 1 1 gt 9 p 7 9 N 77 9 egye o 9104 41014 WAPUOD lt ZE LE 2 gt lt 26 52 1 gt 5 d s D yore jo apis noxpouy lt g 4 lt 9 761 2217 0 ay 195 1 e eui Buieisui ung gt lt 91 1 1 gt 22 2 eeu ynpuog 1u044 1noxoouy 5 E q 5 5 x i Se REN 2 UUUU g e AURI N AAA B 8 4 le e 8 5 uogeoo uonoeuuoo 3A1VA dOLS 10 uoneorpi 4 A lg H youl 8 256 84 14 uonoeuuoo edid S UUU did q e 4 VS P NANA you 8 9 88 SL 34Y74 uonoeuuoo edid svo jueieDujeu 7 Y ei t ieu ouas JO 10jjuoo uogeJjueouoo 10 u
27. Refrigerant cylinder Applied oil Refrigerant charge Apply to flared section Tool exclusive for R410A 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 Bender Flaring work of piping Bend the pipes Tools for other refrigerants can be used by adjusting flaring dimension Tools for other refrigerants can be used A Usable by adjusting flaring dimension A Usable by adjusting flaring dimension 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 thermist
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29. 8 208 230 AC 4 Connect to the outdoor control ler circuit board CNAO 1 208 230 Connect to the M NET power circuit board M P B OC366H 52C Relay Coil resistance 1550 typ S O JeP40 O OvupaseO JP42 O cx Connect to the earth 239 299 2 k Hd ak 559 XALI TE ve s Q 5 E gt 0098 OeL9dfe O O LI NI Voltage of 208 230V AC is input Connect to the terminal block TB1 69 CN5 52C driving signal Connect to the outdoor controller circuit board CNLVB RS1 Rush current protect resistor 202 5 10W LO NO Voltage of 208 230V AC is out put Connect to the outdoor power circuit board E2 Connect to the earth Current transformer Primary current CN5 Primary current Connect to the outdoor power circuit board CN5 2 Connect to the outdoor multi controller board 24 30V DC 24 30V DC PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P36NHMUR1 BS PUMY P48NHMU BS PUMY P48NHMUR4 BS Transmission power board PUMY P36NHMU BS PUMY P48NHMU BS PUMY P48NHMUR3 BS CN1 oq Bo 5 55 S Lo co 5 2 Ove lt gt
30. OC366H 20 63HS TH7TH6 TH3 4 631 63 MULTI 8 8 1 41516 7 1 1 11213 2 HT RED BLU SWU2 SWU SW5 SW6 WHT 63HS TH7 6 L os m n MF1 WHT RED WHT WHT 123 11213 17213 eas ee SW1 SW8 SW2 63H 63L 1T T T4ISIeT7 IR YLW RED SW4 SW3 SW7 1 Gist S WHT LED1 LED2 L 88 88 F500 CN2 TRANS WHT WHT 716151413 211 re 6157413 2 1 7 3 que N T WE Be BE H aa 526 zT ml S CNS1 CNS2 CN4O BLK puy jm RED u w win WHT MN T TB3 a 415 A Mo BRN 52C e Mo BRN H yt JSg9r
31. Single phase 2 wire 60Hz 208 230V 15A Breaker for Wiring and Current Leakage Grounded Power supply Single phase 60Hz 208 230V 1 6mm x 2 AWG14 1 6 x 2 gt AWG14 Indoor unit 0 5 1 25mm x 2 gt Group operation AWG20 AWG16 Remote controller wire OC366H 81 10 6 METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A 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 char acteristics 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 technical manual Power consumption See the technical manual of each indoor unit Standard capacity table Refer to 5 2 0 0 kW Total power consumption of each indoor unit 1 power consumption of outdoor unit 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 indoo
32. e a OC366H Active filter module PUMY P48NHMU PUMY P48NHMU BS PUMY PASNHMU N1 C t to the out PUMY P48NHMU BS 11 12 board TABP2 Connect to the DCL Reactor fiz PAP CLL PLL LLL LA y lal 14 12 BIS 1 Connect to the outdoor power circuit board Connect to the outdoor power Connect to the 52C Ss UNE 15V DC circuit board Control signal TABN2 5 Not used Control signal Error condition Normal value reference Symptom when the unit is in trouble The unit does not operate can not be switched ON The breaker operates CD The unit does n and N1 N2 1 open less than 10 short 100 0 1MO open and L2 ot operate can not be switched ON 94220 Abnormal stop 9 10 189 ACTM error display it does n 24220 Abnorm 10 error di it does n 2 4220 Abn 10 No 1 TM error di it does not ope ot be sw 024020 Abnorm 10 TM error di The symptom when the unit is in open error condition is described to determine open error by tester check OC366H 71 Active filter module PUMY P36NHMU BS PUMY P36NHMUR 1 BS PUMY P36NHMUR4 BS Connect to the outdoor
33. Enable Disable Always Forced defrost Forced defrost Normal During compressor running in heating mode Initial settings ON OFF 123456 SW8 Function Silent mode Demand Control Selection see 9 6 Demand Control Silent mode switch Change of defrosting control Enable For high humidity 4 This function is available only for PUMY P36 48NHMUR4 models OC366H 56 Can be set when off or during operation Initial settings ON OFF 12 9 6 OUTDOOR UNIT INPUT OUTPUT CONNECTOR e State CN51 i E X i i UE EXE E J Sg i FUE EE i i E E LAC felt tee 5B EA zl e Auto change over CN3N ee ee ees 1 fo Sys E pi xt i No i x i CN3N i X i 2 SW2 i E 3 i i i Hi i ticam imis e nl jd i E i Distant control board Relay circuit External output adapter PAC SA88HA E Outdoor unit control board Lamp power supply Procure locally Max 10m 33ft Li Error display lamp L2 Compressor operation lamp X Y Relay standard of 0 9W or less for DC 12
34. 20m 66 ft At the conditions below Header Branch Method Connection Examples Connecting to 4 Indoor Units Y Outdoor Unit First Branch O Indoor unit A a b c d 120m 394 ft 80m 262 ft dis 30 meters 100 ft or less 50 meters 164 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 Total Piping Length Farthest Piping Length L Farthest Piping Length After First Branch High Low Difference in Indoor Outdoor Section High Low Difference in Indoor Indoor Section h W Selecting the Refrigerant Branch Kit Permissible Length Permissible High Low Difference 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 Piping Diameter mm inch Liquid Line 96 35 1 4 Gas Line 412 7 1 2 Liquid Line 9 52 3 8 15 88 5 8 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out door Unit Piping Diameter Model Piping Diameter mm in
35. 9 6kQ 20 C 68 6 3 30 C B6 4 3 40 C 104 F 3 0kO 12345678 Set the SW1 to aL When the temperature in multi controller board is not an actual temperature replace the multi controller board 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 3 minutes If the thermistor does not recover in 3 minutes the operation stops due to detecting abnormality In this time 5103 is displayed Then if the thermistor recovers in 3 minutes it operates normally Short Detected 90 C 194 or more Connector CN29 or CN44 contact failure Check whether the connector CN29 or 4 in the indoor controller board is connected or not Check whether the thermistor wiring is disconnected or not Thermistor wiring disconnection or half disconnection Check the resistance of thermistor OC 829 15 0 10 C 5096 9 6 Thermistor failure 20 C 68 6 3 Open Detected 40 C 40 F less 30 C 86 F 4 3kO 40 C 104 F 3 0kO When there is no problem in above mentioned DOG replace the indoor controller board Detecting circuit failure in the indoor controller board OC366H 44 Abnormal point and detecting method Causes Check p
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37. The addresses of the other entered units will be displayed in alternating fashion after resting the button again e Returning to the normal mode after completing the check Simultaneously press the FILTER and 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 5 5 5 button on the remote controller twice will clear the address entry of the dis played 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 has cleared normally occurred during clearing moe moe INDOOR UNIT ADDRESS NO INDOOR UNIT ADDRESS NO will appear in the room temperature 88 will a
38. When the float switch remains to be turned ON for 3 minutes after detected to be in the water the drain pump is judged to be abnormal and 2502 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 0 above The indoor unit detecting 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 lt 2502 gt 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 p
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40. 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 mm AWG for Breaker for Current Power Supply circuit of over current Model Main Cable 2 Ground Wiring ampacity protector device Outdoor Unit P36 P48 N single 60Hz 208 230V 5 3 AWG10 5 3 AWG10 30A 30 30 mA 0 1 sec or less 26A 40A Indoor Unit N single 60 2 208 230V Refer to installation manual of indoor unit Leakage 1 A breaker with at least 3 0 mm 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 OC366H 80 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 con trollers and 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 i
41. 40 9 TH8 1 a 2 TO INDOOR UNIT WHT m 1 3 3 1 2 CONNECTING WIRES 2 NET Fl U N ISI DC 30V Non polar RED e t eed om 2 lat 55 ll 2 WHT rig 1 om oe EK 4 ET m m a m TB7 RED lt amp lt B __ 2 EE i 1 4 DP n T 4 2 EIS YLw MS SE 22 5 poe BLK E2 77 FOR CENTRALIZED CONTROL a 2 DC 30V Non polar DCLARAR 4 A 1 A leat B 3 23 1 6 tL 4 P RED Oy ufu Bs Ai Fio d 498 4 Bek OT WHT POWER SUPPLY lo 3 208 230V 60Hz ACTM m TB1 mag RED 227 1 MODEL SELECT 1 ON 0 OFF GRN GR Sw4 i MODELS 112131415 PUMY P36NHMU 10 1 110 1 PUMY P48NHMU 10 1111010 OC366H 23 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 8 8 1 TRANSMISSION SYSTEM SETUP MS SSeJppy 900 MS SSeJppv Jejouuoo Jejonuoo d 800 4 MS SSeJppv yun e MS MS SSeJppv 600 010 yun 4oopu
42. 80 262 Max Height difference m ft 50 164 1 Chargeless length m ft 50 164 HU dmmf inch 9 52 3 8 Piping diameter ping Gas dmm inch 15 88 5 8 Guaranteed operation range DEAS UAF P 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 D B 26 7 C W B 19 4 C 2 10 46 50 115 F DB In case of connecting PKFY P06 P08 type indoor unit D B 80 F W B 67 F 8 Electrical data is for only outdoor unit Outdoor 35 C D B 95 In case of connecting 2 indoor units of PLFY P24BM type Heating Indoor D B 21 1 C D B 70 F Btu h kW x 3 412 x 35 31 Ibs kg 0 4536 Outdoor 8 3 W B 6 1 C Above specification data is subject to rounding variation D B 47 F W B 43 F OC366H 11 5 DATA 5 1 COOLING AND HEATING CAPACITY AND CHARACTERISTICS 5 1 1 Method for obtaining system cooling and heating capacity 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 3 STANDARD CAPACITY DIAGRAM 1 Capacity of indoor unit Model number for indoor unit Model 06 Model 08 Model 12 Model 15
43. Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54 Model Capacity 6 8 12 15 18 24 27 30 36 48 54 2 Sample calculation D 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 e Outdoor unit PUMY P48NHMU e Indoor unit PKFY PO8BNAMU E x 2 PLFY P18NLMU E 2 According to the conditions in the total capacity of the indoor unit will be 8 x 2 18x 2 52 9 The following figures are obtained from the 52 total capacity row of the standard capacity table 5 3 Capacity Btu h Outdoor unit power consumption KW Outdoor unit current A 230V Cooling Heating Cooling Heating Cooling Heating 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 model capacity total model capacity of all indoor units 1 The capacity of each indoor unit Btu h the capacity 4 or B 2 Sample calculation using the system described above in 5 1 1 2 During cooling During heating The total model capacity of the indoor unit is The total model capacity of indoor unit is 8000 x 2 18000 x 2 52000Btu h 9000 x 2 20000 x 2 58000 Btu h Therefore the capacity of PKFY PO8NAMU E and Therefore the capacity of PKFY PO8NAMU E PLFY P18NLMU E will be calculated a
44. REFRIGERANT AIRTIGHT TESTING METHOD 1 Connect the testing tools Make sure the stop valves 9 8 are closed and do not open them Add pressure to the refrigerant lines through the service port of the liquid stop valve 9 and the stop valve 2 Do not add pressure to the specified pressure all at once add pressure little by little Pressurize to 0 5 MPa 5 kgf cm G wait 5 minutes and make sure the pressure does not decrease Pressurize to 1 5 MPa 15 kgf cm2G wait 5 minutes make sure the pressure does not decrease G Pressurize to 4 15 MPa 41 5 kgf cm G and measure the surrounding temperature and refrigerant pressure 3 If the specified pressure holds for about one day and does not decrease the pipes have passed the test and there are no leaks f the surrounding temperature changes by 1 the pressure will change by about 0 01 MPa 0 1 kgf cm G Make the nec essary corrections 4 If the pressure decreases in steps 2 or 3 there is a gas leak Look for the source of the gas leak 9 Stop valve Liquid side GStop valve Gas side Service port Open Close section Local pipe Sealed same way for gas side Pipe cover Do not use a wrench here Refrigerant leakage may result Use 2 wrenches here OC366H 86 11 3 PRECAUTIONS AGAINST REFRIGERANT LEAKAGE The installer and system specialist shall secure safety against leakage according to local regulations
45. Thermistor TH6 Low pressure saturated iOS na temperature gt TH3 Thermistor TH7 TH6 4 3kQ 9 6kQ Open or short lt Outdoor gt Ts 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 1000 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 or short Solenoid valve coil Measure the resistance between the terminals with a tester Bypass valve 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 85 85 resistor RS Normal Abnormal P36NHMUR4 BS and NHMUR3 B only PUMY P48NHMUq BS 560 5 Open or short UR3 BS In case of open failure check ACTM with a tester as well current protect Ec mounted on noise filter curcuit board Refer to 9 9 Test point the item of ACTM 200 5 10W 52C relay 52C 4 Measure the resistance between the terminals
46. a number of over connected units Miss operation of origin controller which happens by chance amp Original controller defective Contact failure of outdoor unit or indoor unit transmission line Indoor unit transmission connector CN2M disconnection 9 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 2 minutes and detects abnormality Contact failure of remote controller or indoor unit transmission line Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or remote controller 48 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 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 turn off power supply of outdoor unit indoor unit and lossnay
47. and intercepts the transmission of controlling system and centralized control system and it causes abnormal detection O 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 G Check whether the outdoor unit terminal board for transmission line TB3 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 OC366H D The 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 47 Turn off power supply of outdoor unit indoor unit and lossnay for 2 minutes or more at the same time Then turn on power supply It normally recovers from the malfunction that happens by chance Whe
48. are related to the indoor unit PLEASE WAIT keeps being dis played or it is displayed 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 not operate though is displayed OC366H 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 9 4 THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE EMERGENCY Symptom Display of remote controller Even the cooling heating operation selection button is pressed the indoor unit cannot be operated Cooling Heating blinks The indoor unit can not cool heat if other indoor units are heating 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 continue
49. be displayed as shown in Figure 3 When this happens check whether the indoor unit actually exists and perform entry again e 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 aoe apne 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 e Changing to the linked operation unit address display state The display shown in Figure 4 will appear when the but ton 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 f the temperature adjustment 2C v buttons are pressed the address be changed to the indoor unit that are to be linked If the time setting GDCD buttons are pressed the address of the l
50. below Fan airflow rate setting during defrost operation ON CN22 input resistance Q SNC IET AE RENE CN22 input cable color None Black Blue White Red CN22 Input plug Setting on Located Fan speed setting remote Very Low Low High controller Note The setting will be disabled when heater contact signal is OFF 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 remote controller Auxiliary heating Fan speed Fan speed signal setting setting thermo condition orr Setting on remote OFF ON remote controller controller Baseboard Heating 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 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 sRaESEAEEE Amb increasing Stage 2 Outdoor unit HP operation Heater contact ON signal Stage 3 Outdoor unit OFF Standby Heater contact ON signal em sed cdd cn a i e i d uf b T
51. circuit S JH PT 1 SINT LT J IN1 Q Check of IGBT circuit 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 P2j U 2 V IP2Ii IW N2 U IV 2 Note The N 1 2 P2 U and W shown in the diagram not actually printed on the board CNDC DC280V 350V DC Connect to the outdoor control ler circuit board 18V DC 16 DC 16 DC o Adf a may o o CN3 Thermistor TH8 Bld Sidr o o o o lt 024 1 5 lt Heatsink gt CN5 Detection of primary current Connect to the outdoor noise filter circuit board CN5 CN4 Connect to the outdoor controller circuit board CN4 TABP2 SC P2 Connect to the E lt 04 gt lt gt 66 5 Connect to the outdoor noise filter circuit board Voltage among phases 208 230V AC TABN1 SC N1
52. cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below Set copper pipe correctly referring to cop per 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 Flare cutting dimensions Nominal dimensions inch Outside diameter Dimension 24 mm inch R410A R22 Dimension B Flare nut dimensions Nominal dimensions inch Outside diameter inch mm inch Dimension B R410A 1 4 9 1 11 32 23 64 9 0 1 4 17 0 43 64 3 8 13 2 1 2 33 64 13 0 3 8 22 0 7 8 1 2 16 6 41 64 21 32 16 2 1 2 26 0 1 3 64 5 8 19 7 49 64 25 32 19 4 5 8 29 0 1 9 64 3 4 23 3 3 4 9 Tools for R410A The following table shows whether conventional tools can be used or Tools and materials Gauge manifold Charge hose Gas leak detector Use Air purge refrigerant charge and operation check Gas leak check R410A tools Tool exclusive for R410A Can R22 tools be used Can 407 tools be used Tool exclusive for R410A Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R410A
53. 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 OC366H Additional Charge 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 6 35 x 0 024 kg 1 4 x 0 016 Ibs Refrigerant amount for outdoor unit 3 0kg 6 6 Ibs 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 Example Outdoor model P48 Indoor 1 P24 9 52 3 8 10 33 ft a 2 15 9 52 3 8 10 33 ft b 3 08 99 52 3 8 10 m 33 ft 96 35 1 4 4 POG 96 35 1 4 The total length of each liquid line is as follows 9 52 3 8 C a2 10 10 10m 15 m 45 m 33 ft 33 ft 33 ft 49 ft 148 ft 6 35 1 4 2 c d2 10 m 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 148 ft x 0 041 Ibs 132 ft 0 016 Ibs 6 6 Ibs 1 58 Ibs 49 52 3 8 46 35 1 4 15m 49 ft 10m 33 ft 10m 33 ft
54. inside refrigerant piping can cause deterio ration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging The following tools 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 Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of compressor If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbezene oil in a small amount Do not use a charging cylinder If large amount of mineral oil enters that can cause ration of refrigerant oil etc If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Charge refrigerant from liquid phase of gas cylinder Use the specified refrigerant only If the refrigerant is charged from gas phase comp
55. length of each liquid line is as follows 9 52 30 15 m 45 m 98 ft 49 ft 147 ft 6 35 4 10m 10 m 20 m 40 m 33 ft 33 ft 66 ft 132 ft Calculation example Additional 49ft 33 ft 33 ft 66 ft At the conditions below 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 Ibs 1 54 Ibs 84 Note total of downstream unit models in the table is the total of models as seen from point Ain the figure above Note Pipe re branching after the header branching is not possible Method of Combined Branching of Lines and Headers Connection Examples Connecting to 5 Indoor Units Outdoor unit First branching branching XAT C D Indoor unit Branching header joint 2 Branching joint EE E To downstream unit Y 1 Blind caps Total Piping Length A B C a b c d e is 120 meters 394 ft or less Farthest Piping Length L A B b is 80 meters 262 ft or less Farthest Piping Length After First Branch B b is 30 meters 100 ft or less Permissible High High Low Difference in Indoor Outdoor Section 50 meters 164 ft or less If the outdoor unit is lower 20 meters 70 ft or less Low Difference High Low Difference in Indoor Indoor Section 12 meters 39 ft or less W Selecting the Refr
56. maximum concentration be exceeded 12 DISASSEMBLY PROCEDURE OUTDOOR UNIT PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMUx BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel 2 Remove screws 3 for front 3 for 5 x 12 of the top panel and remove it Top panel fixing screws Top panel Figure 1 yd Service panel Grille fixing Screws Grille fixin JD Service panel i fixing screws 2 Removing the fan motor MF1 MF2 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 5 fan grille fixing screws 5 x 12 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 con troller board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 Photo 1 Frontpanel Photo 2 Fan Propeller Fan motor fix
57. power PUMY P48NHMU BS PUMY P48NHMUR3 BS circuit board TABP2 PUMY P48NHMUR4 BS ESTES 21 CS p 7 EJEPA LL LEOSAN s N1 Connect to the Non connect DCL Reactor cd side N2 Non connect Upper side VE Connect to the outdoor power circuit board TABP1 Connect to the outdoor power lo Connect to the outdoor circuit board CNAF Connect to the outdoor power _ power circuit board 1 GND circuit board TABN2 15V DC Control signal Not used Control signal Connection and internal circuit diagram Error condition Normal value reference Symptom when the unit is in trouble open less than 10 The unit does not operate can not be switched ON randi short 100 0 1MQ The breaker operates open D The unit does not operate can not be switched ON 924220 Abnormal stop 9 10 No 189 ACTM error display short 100 0 1MQ The breaker operates P and L2 it does not operate can not be switched ON 224220 Abnormal stop 9 10 No 189 error display breaker operat P and lo t does not operate can not be swi 94220 Abnormal stop 9 10 189 error d L2 and lo e breaker operates ot operate can not swi 94220 Abnormal stop 9 10 189 error di The symptom when
58. 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 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 ae MITSUBISHI ELECTRIC Indoor unit liquid pipe temperature indicator see NOTE 3 Display panel TEST RUN indicator CEST RUN I ONOFF ON OFF LED Lights up in operation Cooling Heating OO ON OFF button 9 OPERATION
59. spreading it in the air Photo 11 Valve bed Valve bed fixing screw Compressor MC Separator lt bed fixing Screws Accumulator onres Separator fixing nut fixing screw 13 Removing the accumulator 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 8 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 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 4 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the 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 Accumulator i boc leg Accumulator leg fixing screws OC366H 92 13 PARTS LIST non RoHS compliant 13 1 STRUCTURAL PARTS PUMY P48NHMU 1 PUMY P48NHMU BS PUMY P48NHMU PUMY P48NHMU BS 7 7 EFE E
60. the connector CNF1 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 Y Is the voltage normal Replace outdoor controller board 2Yes gt Replace the fan motor V Yes OK Check the operation of fan gt END Check the operation gt Replace the fan motor D FAN MOTOR MF1 Motor 4 Inverter driver k TESTS POINT V C Replace outdoor controller board 3 FAN MOTOR MF2 Motor Inverter driver k TESTS POINT Vsp Multi controller board 2 S EOS ipa x 7 0 15 pulse V TESTS POINT control vo e PS 6 C515 DC0 6 5V 4 TESTS POINT Vsp power supply gate drive 5 82 DC15V lt TESTS POINT 2 Ground 4 3 3 TESTS POINT Vcc T m mid jose lt power supply inverter drive B 1 2 1 0510 F500 CNDC cNDC TESTS POIN
61. the transmission 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 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 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 transmitted data by a defective repeater function which connects
62. to standard piping length from Figure 3 and then multiply by the heating capacity from Figure 2 to obtain the actual capacity OC366H 16 1 Capacity CORRECTION CURVE Figure 3 Cooling 100 Led a Heating 95 Heating P36 48 models 5 90 2 5 gt 85 G Cooling P36 model 8 80 Cooling 48 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 x number of bends in the piping m Length of piping to farthest indoor unit 80 m 262 ft 5 4 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 43 39 36 32 28 25 21 18 14 Outdoor
63. with a tester Note i y Normal Abnormal As for P36NHMU BS P36NHMUR1 BS 1 P36NHMUR4 BS and T Coil A1 A2 P48NHMU2 BS P48NHMUR3 BS Open or short P48NHMUR4 BS 52C relay is mounted on noise filter curcuit board Reference value 155Q typ A2 Reference value 1 45kQ only 48 0 5 Reactor DCL Measure the resistance between the terminals with a tester ERES Normal Abnormal Mil 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 OC366H 58 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 Pay attention to the service Do not pull out the connector CNF1 2 for the 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 controller board Check the fuse F500 on outdoor lt Did the fuse blow Wiring contact check Contact of fan motor connector CNF1 2 Is there contact failure gt gt gt Replace outdoor controller board MULTI B and fan motor 1 2 Power supply check Remove
64. 0 Input Cool kW 3 22 Input Current Cool A 14 23 15 74 Power factor Cool 98 4 Input Heat kW 2 93 Input Current Heat A 12 88 14 24 Power factor Heat 98 9 Btu h W 11 18 COP Heat W W 4 00 Connectable indoor units Max 6 Max Connectable Capacity Btu h 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 ANB33FDSMT Motor output 2 2 Capacity control Cooling 41 100 Heating 41 100 Starting method Inverter Crankcase heater Heat exchanger Plate fin coil Anti corrosion fin treatment Fan Fan drive X No Propeller fan x 2 Fan motor output kW 0 086 0 086 Airflow m min 100 3 530 Dimensions HxWxD mm in 950 37 13 32 330430 13 1 3 16 D mm in H mm in 1 350 53 5 32 Weight kg 130 287 Refrigerant R410A kg Charge 8 5 18 7 Oil Model L oz 2 3 73 FV50S High pressure protection HP switch Compressor protection Discharge thermo Compressor thermo Over current detec
65. 1 2 inch 04 SENSOR 25 LOW PRESSURE SWITCH E03 BYPASS VALVE E17 SOLENOID COIL BYPASS VALVE gt E18 SOLENOID COIL lt 4 WAY VALVE gt E05 4 WAY VALVE h ee oL 75 THERMISTOR LOW PRESSURE SATURATED OUTDOOR 6 7 05 HIGH PRESSURE SWITCH 63H E29 HEAT EXCHANGER E02 CONTACTOR 52C 850 TERMINAL BLOCK 3P L1 L2 GR TB1 E14 NOISE FILTER CIRCUIT BOARD N F H76 MULTI CONTROLLER CIRCUIT BOARD MULTI B E17 TERMINAL BLOCK 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 E66 THERMISTOR OUTDOOR PIPE TH3 E00 THERMISTOR DISCHARGE TH4 E65 OC366H THERMISTOR HEATSINK 95 N 5 TH8 RoHS PARTS LIST 14 lt gt 52 7 NI A A A g 14 1 FUNCTIONAL PARTS DH DD Q s cou C C 7 gt gt 2 27 80 900 60 67 600054 9 69 60 91 60 08 04 222222 Ww TIITIII 222222 9
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67. 5103 Gas pipe temperature sensor trouble TH23 Q 5105 Piping temperature sensor trouble TH3 Check delay code 1205 5106 Outdoor temperature sensor trouble TH7 Q Check delay code 1221 5110 Heatsink temperature sensor trouble TH8 Check delay code 1214 5201 Pressure sensor trouble 63HS Check delay code 1402 5701 Contact failure of drain float switch Q 6600 Dupricated unit address setting O Remote controller is detected 6602 _ Transmission error 1 Only M NET Remote controller is detected Transmission processor hardware error 6603 Transmission error Transmission route BUSY Remote controller is detected 6606 Transmission and reception error 1 Only Remote controller is detected Communication trouble with transmission processor 6607 Transmission and reception error No ACK error Q Q M NET Remote controller is detected 6608 _ lransmission and reception error Q Only M NET Remote controller is detected No responsive frame error 6831 MA communication receive signal error Q MA Remote controller is detected no receive signal MA commnication send signal error 6832 MA Remote controller is detected 6833 MA commnication send error H W error Only MA Remote controller is detected 6834 commnication receive error MA Remote controller is detected Synchronous recovery error 7100 Tot
68. 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 removing the right side panel Note 3 When installing the high pressure sensor cover it with a wet cloth to prevent it from heating 100 212 F or more then braze the pipes so that the inside of pipes are not oxidized OC366H 91 Photo 10 High pressure Low pressure sensor 63HS switch 63L OPERATING PROCEDURE PHOTOS 12 Removing the compressor MC 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 8 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel b 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 4 right side panel fixing screws 5 x 12 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
69. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS utilized R410A September 2012 No OC366 REVISED EDITION H TECHNICAL amp SERVICE MANUAL Model name Service Ref Sia Standard type PUMY P36NHMU PUMY P36NHMUR4 BS and 6 1 have been added in REVISED PUMY P36NHMUR4 EDITION H ET PUMY P48NHMU have been PUMY P48NHMU PUMY P48NHMU Please void OC366 PUMY P48NHMUR3 REVISED EDITION G PUMY P48NHMUR4 PUMY P36NHMU BS This Service manual describes PUMY P36NHMUR1 BS fete it PUMY P36NHMUR4 BS service manual PUMY P48NHMU BS Rog des aeu PUMY P48NHMU BS name plate PUMY P48NHMU BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS CONTENTS 1 TECHNICAL CHANGES eren 2 2 SAFETY PRECAUTION nnne 5 3 OVERVIEW OF 6 8 A GPECIFICATIONS 1 00021205 10 ERES 12 6 OUTLINES AND 18 7 WIRING rnnt nnn 20 8 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 24 9 TROUBLESHOOTING enne 34 10 ELECTRICAL nenene 80 11 REFRIGERANT PIPING 83 12 DISASSEMBLY
70. Controller 101 10130 Set at an IC Main address within the same group plus 150 Sub Remote Controller 151 to 200 d Use the indoor unit IC within the group with the most functions as the IC Main unit Combinations of 1 through 3 above are possible 66 26 Name Symbol and the Maximum Remote controller Units for Connection Name Symbol Maximum units for connection Outdoor unit OC Indoor unit IC One OC unit be connected to 1 6 P36 1 8 48 IC units M NET remote controller RC Maximum 2 RC for 1 indoor unit Maximum 16 RC for 1 OC Permissible Lengths Prohibited items Longest transmission cable length 1 25 mm AWG16 L1 L2 L2 L3 L3 L1 200m 6561 Remote controller cable length 1 If 0 5 to 1 25 mm AWG20 to AWG16 1 2 S10m 33 2 If the length exceeds 10 meters Mis 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 M NET remote controller RC and MA remote controller MA cannot be used together Do not connect anything with TB15 of indoor unit IC OC Same as above Use the indoor unit IC address plus 150 as the sub remote controller address In this case it
71. ED 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 Example When the compressor and SV1 are turned during cooling operation When faults requiring inspection occurs The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred OC366H 22 Bit 1 2 3 4 5 6 8 123 45 67 8 ication Compressor Fan nit Indication operated 52C 2194 SV1 SV2 Aways it M D LEN C qme 63L 63 TH6
72. H01 202 THERMISTOR LOW PRESSURE SATURATED OUTDOOR TH6 7 T7W E07 208 HIGH PRESSURE SWITCH 63H T7W E41 408 HEAT EXCHANGER R01 03 310 CONTROLLER CIRCUIT BOARD C B R01 V14 310 CONTROLLER CIRCUIT BOARD C B T7W F24 315 CONTROLLER CIRCUIT BOARD C B R01 E27 246 TERMINAL BLOCK M1 M2 S TB3 TB7 R01 E02 311 M POWER BOARD M NET P B R01 E04 311 M POWER BOARD M NET P B R01 E20 259 REACTOR DCL T7W E17 259 REACTOR DCL R01 E44 259 REACTOR DCL R01 E64 313 POWER CIRCUIT BOARD P B R01 E65 313 POWER CIRCUIT BOARD P B R01 E07 233 ACT MODULE T7W E45 716 TERMINAL BLOCK L1 L2 GR R01 E18 346 NOISE FILTER CIRCUIT BOARD 6P R01 E99 202 THERMISTOR HEATSINK R01 E22 255 MAIN SMOOTHING CAPACITOR R01 H00 202 THERMISTOR OUTDOOR PIPE R01 E12 201 THERMISTOR DISCHARGE 0O00 ODO ooOO o o o R01 OC366H E06 239 FUSE 250 V 6 3 97 RoHS PARTS LIST 14 2 STRUCTURAL PARTS PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS
73. H7 Outdoor Temperature 12 0 10 20 10 F 32 F 50 F 68 F OC366H 3 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 TH7 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 TH7 lt 12 Auxiliary heating only Outdoor unit is OFF Based on above chart listed the sequence of operation on On Ambient Increase Stage 3 TH7 lt 0 Auxiliary heating only Outdoor unit is OFF Stage 2 TH7 gt 0 20 Auxiliary heating with outdoor unit in HP mode Stage 1 TH7 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 Indoor unit Outdoor unit Remote control Board Relay circuit Adapter control board control board 33 725 7275 Dip switch 5 SW4 4 lao ES 125 11 un le 11 E5 L loz X 95 t iut 5 Electric Heater iri Been pecus he Preparations in the field Maximum cable length is 10 m 321 For relay X use the specifications given below operation coil Rat
74. Intake temperature W B C 6 4 2 0 2 4 6 8 10 Correction factor 1 0 0 98 0 89 0 88 0 89 0 9 0 95 0 95 0 95 5 5 NOISE CRITERION CURVES PUMY P48NHMU BS PUMY P36NHMU BS MODE SPL dB LINE PUMY P48NHMU BS 5 LINE PUMY P36NHMUR1 BS cene 49 2 PUMY P48NHMUxX BS 0046 SS PUMY P36NHMUR4 BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS x 90 90 5 3 8 S s m 70 e LL m 5 2 a oe 60 60 gt 5 pe 50 m 50 E 2 NE o B as E 40 Y 40 5 5 22 r 30 hes 2 20 APPROXIMATE RO gt capis 1 B B E i 8 10 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 gt GROUND OC366H 17 OUTLINES AND DIMENSIONS inch mm inc Uni noyoouy ejou Buidid 1 Buidid 1u044 lt zevez s gt lt zevez s gt lt zevee s gt lt 26 128 919 6609 ji a ozz
75. LLLOOOLO pinbiq ZZHL 801 11100001 11100000 Oo 291 pinbri 2e2H L 921 seo ezH L 801 LLOLLLLO 7 pinbry zzH 20 D SEO EZHL ZO LLOLLLOL 2 SBD EZHL 901 LLOLLLOO A31 1 ATIS Joopino jo Aejdsiq asind Buiuedo A31 821 LLOLLOLL asind Buiuedo A31 21 LLOLLOLO asind Buiuedo A31 991 LLOLLOOL yun jo Aejdsiq 330 330 oway oway uoneJedo 89 LLOLLOOO 2J uoneJedo 99 LLOLOLLO Ajoedeo yun jo ejdsiq epoo Ayloeded 821 LLOLOLOL Ayoedey 771 LLOLOLOO Aoede 95 LEOLOOLL z uo Kejdsiq Ke dsiq 81997561 LMS 79 66 10 ELECTRICAL WIRING This chapter 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 an
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77. O R Fal SWITCH 99 c5 OO L AIR DIRECTION button 382 1 CHECK TEST E CD CoOo o TEST RUN button LOUVER button Control panel AIR SPEED button 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 perform 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 O S E O 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 hours later NOTE During test run the indoor liquid pipe temperature is displayed on remo
78. PUMY P36NHMUR4 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 18 000 20 200 1 38 1 45 6 4 19 000 21 300 1 45 1 52 6 7 20 000 22 400 1 52 1 60 7 0 21 000 23 500 1 60 1 67 i 7 4 22 000 24 700 1 68 1 75 7 7 23 000 25 800 1 76 1 83 E 8 0 24 000 26 900 1 85 1 91 8 4 25 000 28 000 1 94 1 98 f 8 7 26 000 29 200 2 04 2 06 9 1 27 000 30 300 2 14 2 15 9 4 28 000 31 400 2 24 2 23 9 8 29 000 32 500 2 35 2 31 10 2 30 000 33 700 2 46 2 40 10 5 31 000 34 800 2 58 2 48 32 000 35 900 2 70 2 57 33 000 37 000 2 82 2 66 34 000 38 200 2 95 2 75 35 000 39 300 3 08 2 84 36 000 40 000 3 22 2 93 36 200 40 200 3 23 2 92 36 400 40 400 3 25 2 89 36 600 40 700 3 26 2 86 36 900 40 900 3 27 2 84 37 100 41 100 3 28 2 81 37 300 41 300 3 30 2 78 37 500 41 600 3 31 2 75 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 hundred Btu h OC366H 14 5 3 2 PUMY P48NHMU BS 48 5 48 2 5 PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS Total capacity Capacity Btu h consumption kW Current A 230V Current A 208V of
79. 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 OC366H 99 CH Y Iul HET MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU 100 8310 JAPAN Copyright 2006 MITSUBISHI ELECTRIC CORPORATION Distributed in Sep Distributed in Sep Distributed in Dec Distributed in Sep Distributed in Nov Distributed in Jul Distributed in Dec Distributed in Apr Distributed in Jan Made in Japan 2012 2011 2010 2010 2009 2008 2007 2006 2006 No No No No No No No No No OC366 REVISED EDITION H OC366 REVISED EDITION G OC366 REVISED EDITION F OC366 REVISED EDITION E PDF 5 OC366 REVISED EDITION D PDF 7 OC366 REVISED EDITION C PDF 7 OC366 REVISED EDITION B PDF 9 OC366 REVISED EDITION A PDF 10 OC366 PDF 10 New publication effective Sep 2012 Specifications are subject to change without notice
80. Remote controller Enable Disable Before turning the power on Initial settings ON OFF 123456 SW3 Test run OFF from outdoor unit ON OFF Mode setting Heating Cooling Always Initial settings ON OFF 12 c 3 o o g 5 MODEL SELECT gt MODELS PUMY P36NHMU PUMY P48NHMU Before the power is turned on Initial settings Set for each capacity SW5 Function switch Pressure limitation value change Normal Change the indoor unit s LEV opening at start Normal Fixing the indoor units linear expansion valve opening Normal Can be set when off or during operation Fix the operation frequency Fix Normal OFF to ON during com pressor running Change the indoor unit s LEV opening at defrost Enable Normal 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 linear expansion valve on indoor unit 1 Active Inactive During the FAN or COOL mode and thermo OFF in heating operation set the opening of linear ex pansion valve on indoor unit 2 Active Inactive 51 SW5 7 Refrigerant shortage amount is measured during heating operation Refrigerant piping is long etc 2 SW5 8 Countermeasure ag
81. T D Vi Power board CHECK POINT CHECK POINT TESTS POINT V TESTS POINT 9 Vsp 2 rotation 1 A LPO512 DC0 15V pulse 4 TESTS POINT V control voltage 6 T C516 DC0 6 5V 4 TESTS POINT Vsp lt power supply gate drive 5 Ground 4 TESTS POINT 2 Vcc lt power supply inverter drive 2 TESTS POINT 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 OC366H 59 Check method of multi controller board C Multi controller board check 4 Check the fuse on Multi controller board eplace Multi controller board and fan mot R Or See DC fan check Check the SV1 and 2154 wiring No Check the breaker and main incoming pow Check noise filter board Yes blow Did the fuse F500 blow No Did the fuse F1 and F2 blow YOS blow No 7seg LED is lit No No lit SW1 all off Yes Check the voltage from the pow
82. V X Y Relay DC1mA Remote control panel Relay circuit External input adapter PAC SC36NA Outdoor unit control board Relay power supply 9 Procure locally Max 10m 33ft ON OFF Swi Heating Cooling SW2 Validity of SW1 Invalidity of SW1 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 outdoor controller board It is possible to set it to the following power sonsumption compared with ratings by setting SW1 2 OC366H 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 57 9 7 HOW TO CHECK THE PARTS PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU x BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 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 lt Discharge Compressor gt Normal Abnormal
83. after recover When the resistance is not below of defrosting above mentioned short open value replace the thermistor are not detected 32 F about 700kQ Short 216 C 421 F or more 1kQ 10 C 50 F about 410kQ Open 0 C 32 F or less 700kQ 20 C 68 F about 250kQ 30 C 86 F bout 160kQ Note When outer temperature thermistor 40 C 04 104 TH7 is 5 C 41 or less on cooling 12345678 open detecting is not determined as amp Multi controller board input circuit Set the SW1 to on BELLI abnormality failure When the temperature in multi controller board is not an actual temperature replace the multi controller board OC366H 43 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 3 minutes If the thermistor does not recover in 3 minutes the operation stops due to detecting abnormality In this time 5102 is displayed Then if the thermistor recover in 3 minutes 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 G Thermistor failure Detecting circuit failure in the indoor controller boa
84. ainst room temperature rise for indoor unit in FAN COOL and thermo OFF heating mode 3 Note This model switching is not available for PUMY P48NHMU BS since it does not have the auxiliary heating function DIP SW4 4 for auxiliary heating control Set DIP SW4 4 always DIP SW4 4 OFF Auxiliary heating function Initial setting is disabled SW4 4 ON Auxiliary heating function is enabled OC366H 55 Can be set when off or during operation Initial settings ON OFF 12345678 Switch Function The black square indicates a switch position Operation in Each Switch Setting ON OFF When to Set Remarks Switch of current limitation reading in a different way Enable Normal Before turning the power on SW6 Function Restriction of maximum frequency Enable Normal switch Ignore refrigerant filling abnormality Enable Normal Switching the target discharge pressure Pdm Enable Normal Switching 1 the target evaporation temperature ETm Enable Normal 5 Z o 5 Switching 2 the target evaporation temperature ETm Enable Normal Can be set when off or during operation Initial settings ON OFF 12345678 Ignore current sensor abnormality Enable Normal After turning the power on SW7 Function switch Simultaneous operation for cooling and heating 4
85. al power has been turned on OC366H 28 Name Symbol the Maximum Units for Connection Longest length via outdoor units L1 L2 L3 L4 L1 L2 L3 L5 L1 L2 L6 L7 500 meters 1640 ft 1 25 mm AWG16 Longest transmission cable length L1 L3 L4 L3 L5 Le L2 L6 7 200 meters 1 25 mm AWG16 Remote controller cable length 21 22 22 23 4 S 10 meters 33 ft 0 5 to 1 25 mm AWG20 to AWG16 If the length exceeds 10 meters 33 ft use a 1 25 mm AWG16 shielded wire The length of this section 15 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 OC366H 29 C Example of a MA remote controller system ad
86. al capacity error Q 7101 Capacity code error 7102 Connecting unit number error Q 7105 Address set error Q 7111 Remote controller sensor trouble Q NOTE 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 45 67 8 EY MO 0 i Indication OC366H Compressor operated 1 L0 0 C lt gt 11 D Display Abnormal point and detecting method Causes Check points 1102 High discharging compressor temperature Abnormal if discharge compressor 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 compressor temperature thermistor TH4 exceeds 110 C 230 F Over heated compressor operation caused by shortage of refriger
87. an be removed easily by remov ing the right side panel 10 Removing the high pressure switch 63H and low pres sure 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 4 Remove 5 right side panel fixing screws 5 x 12 in the 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 removing the right side panel Note 3 When installing the high pressure switch and low pressure switch cover them with a wet cloth to pre vent them from heating 100 C 212 F or more then braze the pipes so that the inside of pipes are not oxidized High pressure switch 63H Bypass valve coil fixing screw Bypass valve 1 WENNS coi SV1 High pressure sensor 63HS 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 5 right side panel fixing screws 5 x 12 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
88. and attribute is on the fresh 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 amp When the controller of displayed address and attribute is not recognized OC366H When 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 2 minutes and detects abnormality Contact failure of remote controller or indoor unit transmission line Q Indoor unit transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or remote controller O 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 2 minutes and detects abnormality Contact failure of fresh master indoor unit transmission line Indoor unit or fresh master transmission connector CN2M disconnection Sending receiving signal circuit failure in the indoor unit or fresh master When the lossnay power supply is Off the indoor
89. annot be operated from the remote controller diagnose the remote controller as explained below O First check that the power on indicator is lit If the correct voltage DC12 V is not supplied to the remote controller the SELF CHECK Lu indicator will not light If this occurs check the remote controller s wiring and the indoor unit Power on indicator Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Press the CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK _ RE SELF CHECK ut _ Remote controller self diagnosis result When the remote controller is functioning correctly Check for other possible causes as there is no problem with the remote controller When the remote controller malfunctions Error display 1 blinks The remote controller s transmitting receiv ing circuit is defective SEL CHECK 1 lt M r ZRT UA Where the remote controller is not defective but cannot be 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 xB832 ES L There might be no
90. ant Defective operation of stop valve Defective thermistor Defective outdoor controller board Defective action of linear expansion valve Check intake super heat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is fully open 90 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 operated Abnormal 63L is operated under 0 03MPa 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 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 Check linear expansion valve 1 High pressure High pressure switch 63H operated Abnormal if high pressure switch 63H operated 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 31 625PSIG or more or over 4 15MPa 602PSIG for 3 minutes during the compr
91. art of float switch ex sludge etc Defective float switch Defective indoor 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 D Check if drain pump works Check drain function 9 Check moving part of float switch Check the value of resistance with the float switch ON OFF Change the indoor controller board 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 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 c
92. ature TH6 Thermistor Outdoor TH7 Thermistor RO 15 3 constant 3480 2 1 1 Rt 15 3480 2734 273 t C F 32 1 8 OC 32 15kQ 10 C 50 9 6kQ 10 20 C 68 F 6 3kQ 25 C 77 F 5 2kQ 30 C 86 F 40C 104 F 3 0 0 Resistance 20 10 0 10 20 30 40 50 4 14 32 50 68 86 104122 F 200 Medium temperature thermistor Heatsink temperature thermistor TH8 Thermistor R50 17kQ 2 B constant 4170 396 Ue v ed 273 t 323 0 32 180 25 C 77 F 50kQ 50 C 122 F 17kQ 50 70 C 158 F 8kQ 90 C 194 F 4kQ Rt 17exp 4170 100 C F 32 1 8 Resistance kQ 25 50 75 100110125 C 77 122 167 212230 257 High temperature thermistor Thermistor Discharge Compressor 4 Thermistor R120 7 465 2 B constant 4057 2 Ls cs 7 465 4057 2734 393 t C 32 1 8 Resistance 20 68 250 0 70 158 34kQ 30 86 160kO 40 104 F 104kQ 50 122 70kQ 60 140 48 66 80C 176 F 24 90 194 17 5kQ 100 C 212 13 0kQ 110 C 230 9 8kQ 65 25 TZ 50 75 100 120 122 167 212 248 F Tempera
93. by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 4 Electrical parts box 4 Removing the thermistor Low pressure saturated temp TH6 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 8 Disconnect the connector 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 Low pressure saturated temp TH6 from the sensor holder Note In case of replacing thermistor Low pressure satu rated temp TH6 replace it together with thermistor Outdoor since they are combined together Refer to No 5 below to remove thermistor lt Outdoor gt Photo 5 Thermistor lt TH6 gt Electrical parts box 5 Removing the thermistor lt Outdoor gt TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connector 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 See Photo 4 5 Pull out the thermistor lt Outdoor gt TH7 from the sensor holder Note In case of replacing thermistor lt Outdoor gt TH7 replace it together with thermistor lt Low pressure saturated temp gt TH6 since they are combined together Refer to No 4 above to remove therm
94. ch PUMY P36 48 Liquid Line 9 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 18 or lower Select the size from the right table 24 to 54 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 the procedure shown on the right If the calculated additional refrigerant charge is a negative amount do not charge with any refrigerant OC366H Additional refrigerant charge Liquid pipe size Total length of 9 52 x 0 06 kg 3 8 x 0 041 1 5 Liquid pipe size Total length 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 Ibs ft m x 0 024 kg m ft x 0 016 Ibs ft 3 0kg 6 6 Ibs Example Outdoor model P48 Indoor 1 24 9 52 3 8 30 m 98 2 P15 3 4 9 52 3 81 b 46 35 1 4 6 35 1 4 46 35 1 4 15m 10m 10m 20m The total
95. d for one hour At defrosting in heating hot adjusting and thermostat OFF it automatically changes 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 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 The compressor t
96. d 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 96 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 AN Warning Be 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 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
97. ddress setting of the outdoor unit is wrong Addresses miss setting of the outdoor unit 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 M NET remote controller during the operation When an old type M NET remote controller is used and the remote controller sensor is specified SW1 1 is ON Replace the remote controller to M NET remote controller Serial communication error Abnormal if serial communication between outdoor multi board and outdoor power board is defective OC366H Breaking of wire or contact failure of connector CN2 Breaking of wire or contact failure of connector 4 Defective communication circuit of outdoor power board Defective communication circuit of outdoor multi board for power board 51 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 c
98. 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 MAremote controller is connected to the transmission line of the indoor outdoor unit left that are related to the indoor unit The remote controller does not operate though is displayed 2 For MA remote 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 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 Check the part where the abnormality occurs The entire system In the entire refrigerant system Though the indoor unit operates the display of the remote controller goes out soon In same group only Th ly of the indoor unit Master is not on pinay ed 1 indoor uni
99. dress 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 L2 IC IC 00 00 TB5 15 TB5 15 45 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 Using 2 remote controllers for each indoor unit a The same as above b The same as above 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
100. e 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 OC366H 6 2 3 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work 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 times 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 7 mm 7 256 inch or below Diagram below Piping diameter and thickness Nominal Outside Thickness mm inch dimensions inch diameter mm R410A R22 1 4 6 35 0 8 1 32 0 8 1 32 9 52 0 8 1 32 0 8 1 32 12 70 0 8 1 32 0 8 1 32 15 88 3 8 1 2 5 8 3 4 19 05 Br 1 0 5 128 Dimensions 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
101. e facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board 85 Replace 52C P36NHMU BS NHMUR1 BS NHMUR4 BS P48NHMUz BS NHMURS BS NHMURA4 BS Replace noise filter circuit board Including 52C Replace ACT module Refer to 9 9 Test point the item of ACTM Check CN5 wiring on the outdoor power circuit board Replace outdoor power circuit board Check CN2 wiring on the outdoor power circuit board Replace outdoor power circuit board Check CNAF wiring The 4220 error history can be confirmed with SW1 No 189 Refer to 9 9 Test point the item of ACTM on In PUMY models bus voltage is controlled using ACTM If ACTM is failed bus voltage becomes uncontrollable and stops abnormally 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 1 Check point Self check switch No 45 5 1 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 340 350 DC Failure no operation Less than 310V DC or over 400V DC Caution Determine the voltage for 10 seconds after the compressor has op
102. e model code registration Switch outdoor multi controller board SWA of the outdoor unit Abnormal point and detecting method Causes Check points Capacity code error When the connected indoor unit models cannot be connected 7101 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 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 Code of indoor unit No 7 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 Ga 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 GVentilation unit connecting is only tunit Check whether the connecting unit exceeds a number of limitations or not Address setting error A
103. e operating Determine the nature of the abnormality and apply corrective measures Detected unit Check code Trouble incar Tonto Remum Remarks T Outdoor unit Multi controller board 0403 Serialitransmi sion trouble O Power board communiation trouble 1102 Discharge Compressor temperature trouble O Check delay code 1202 1300 Low pressure trouble Check delay code 1400 1302 High pressure trouble 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 2503 Drain sensor trouble THd 4100 Overcurrent trouble Overload compressor lock O 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 Q Check delay code 4350 4400 Fan controller trouble Outdoor Check delay code 4500 5101 Air inlet sensor trouble TH21 or Discharge Compressor temperature sensor trouble TH4 Check delay code 1202 Liquid pipe temp sensor trouble TH22 or 2102 Low pressure saturated temp sensor trouble TH6 Check delay code 1211
104. e rated time individual capacity at the rated time Individual capacity under stated conditions total capacity under the stated conditions x 3 3 total capacity at the rated time 3 Capacity correction factor curve Figure 1 Cooling performance curve Figure 2 Heating performance curve 1 4 1 4 Cooling capacity ratio Heating capacity ratio C DB FDB 1 2 1 2 15 59 C WB FWB 21 1 70 22 71 6 1 0 20 68 150 25 77 18 64 4 INDOOR 16 60 8 0 8 0 8 INDOOR 0 6 0 6 0 4 C WB FWB 1 4 22 71 6 C DB FDB 20 68 12 21 1 70 18 64 4 16 60 8 15 59 INDOOR 10 25 77 0 8 INDOOR 0 6 ooling power consumption Heating power consumption ratio ratio 0 4 SP ESL EE ER Ee 12 0 5 0 5 10 15 CWB 23 32 50 68 86 104 115 F DB 0 10 14 23 32 41 50 59 F WB OUTDOOR OUTDOOR 5 4 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 multi ply 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
105. e top panel See Figure 1 z Vo hon 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 5 right side panel fixing screws 5 x 12 in the coil 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 OC366H 90 OPERATING PROCEDURE PHOTOS 9 Removing bypass valve coil SV1 and bypass valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 5 right side panel fixing screws 5 x 12 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 control ler 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 Note 2 The welded part c
106. ecessary 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 OC366H 32 Name Symbol the Maximum Units for Connection Longest length via outdoor unit M NET cable Li L2 L3 L4 and Li L2 Le L7 500 m 1640ft 1 25 mm 1 6 or more Longest transmission cable length M NET cable Li and L3 L4 and Le and 12 6 and L7 200 m 656ft 1 25 mm AWG16 or more Remote controller cable length m1 and m1 m2 m3 and 1 2 3 4 200 m 656ft 0 3 to 1 25 mm AWG20 to AWG16 Permissible Length IC 2 IC 03 Tes TB15 Prohibited items Group Group Group 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 M NET remote controller and MA remote controller cannot be connec
107. ecorative panel Name M NET remote controller MA remote controller Remote Model number PAR F27MEA US PAR 21MAAU J PAR 30MAAU J controller A handy remote controller for use in conjunction Address setting is not necessary Functions with the Melans centralized management system Addresses must be set 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 OC366H 8 3 2 UNIT SPECIFICATIONS 1 Method for identifying MULTI S model B Indoor unit lt When using Model 30 gt B Outdoor unit When using model 48 gt P1130 MUJ E YI 148 IN M 0 BS Refrigerant bud PAG 410 22 410 control L Ceiling cassette COmmMONNESS MULTI S Outdoor unit K Wall mounted type model type E Hidden skylight type Frequency Frequency Power supply Salt proof Ceiling suspended type COnversion UL model Conversion N Single phase type M Ceiling cassette type controller L M NET control controller 208 230V 60Hz F Floor standing type _ Unit model type Indicates eq
108. ed voltage 12VDC Power consumption 0 9W or less Use 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 Do not extend the cable more than 10 meters 321 Recommended circuit 88H H1 S FS1 RO 1 phase power s supply 88H FS2 FS1 208V 230V 60Hz R O0 Q9 s 4 FS1 2 Thermal fuse Wiring diagram H1 H2 Heater kena 26H Overheat protection thermostat Control board 88H Electromagnetic contactor CN24 OC366H 4 2 SAFETY PRECAUTION 2 1 CAUTIONS RELATED NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes Avoid using thin pipes 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 Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazards to refrigerant cycle In addition use pipes with specified thickness Contamination
109. ejdsiq 0 0Z 0 0 WHS WOS 991 HS OS 100 01110000 91 HS OS 00 10 Gol HS OS Joopu 1 col 221 HS OS 100 050801 LOI HS OS 1 1 0LLOLLOO 0 02 0 0 95 Oc Oe 2 2 2 Oe 002 4S 0 2 0 2 u43 5 Kejdsip 3 Jebel 0101010 0 05 0 0 fe dsip 01101001 yeausadns jo Aejdsiq 6666 6 66 pHS 1eeuiedns eBreuosiq HS OS 100 jo ejdsiq HS yeausedns 002 9 joooqns Buneeu 6666 6 66 Oo HS OS 521 Oo HS OS VOI 01100101 Oo 5 25 291 01100100 2 HS OS 201 01100011 Qo HS OS 21 01100010 ejep deis jooaqns jo Aejdsiq deis joooqns 19612 01100001 9 6 6 2 210131 8 94 60 LMS 76 66 10 15 edid Jo Kejdsiq 26 5 pe e dsip s JOU si 4 6 666 6 66 pinbr1 221 LOLOLLLO do pinbr1 101 LO
110. ensor defective 1 Check the ball valve is fully open TH7 and outdoor piping temp thermistor 2 Discharge temperature thermistor 2 Check the resistance of discharge applies to the formula of defective temperature thermistor TH7 TH3 lt 5 9 F 3 Thermistor input circuit defective and 3 According to Outdoor unit functions 4 High pressure sensor is below about high pressure sensor defective set the SW2 and check the high 2 04MPa 296PSIG in multi controller board pressure sensor level lt Detecting mode gt According to Outdoor unit functions When the below conditions are satisfied check the discharge temp thermistor completely level When the high pressure sensor 1 Compressor is operating and discharge temp thermistor are 2 When cooling discharge superheat is 80 C normal if the above mentioned detecting 144 F or more pressure level and temp are big different When heating discharge superheat is 90 C from the actual pressure and temp 162 F more replace the multi controller board High pressure sensor is below about Error detection of TH7 TH3 2 32MPa 337PSIG 1 Thermistor defective 1 Check the resistance of thermistor 2 Thermistor input circuit defective in 2 According to Outdoor unit functions multi controller board check the outdoor pipe temp thermistor level 3 According to Outdoor unit functions check the outer temp thermistor level Water leaka
111. er board lit to CNDC PNK connector TEDI TED2 lt 280V to 350V DC Yes Normal Check wiring Replace multi controller board bif Check wiring a cs PNK Multi controller board Power circuit board 280 350V DC 3 z 9 conv circuit CNDC PNK F500 208 230V 10 AC 208 230V 10 AC 208 230V 208 230V CNAC2 RED 10 AC 10 AC NI L2 PES OC366H 60 Check method of power board Power board check 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 Checkihis breaker and power suppl 208 230V AC pply Yes Check wiring isthe 252 Check power board Check noise filter board Yes Check wiring Is the voltage to the compressor No Check model setting switch SW4 U V U W and V W balanced on the multi controller board Replace power board Yes C Normal 2 208 230V 10 AC P36NHMU
112. er factor Heat 3 99 5 EER Cool 8 Btu h W 9 66 COP Heat 3 W W 3 24 Connectable indoor units Max 8 Max Connectable Capacity Btu h 62 400 130 Power Supply 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 ANB33FDCMT NHMU NHMU Model ANB33FDHMT NHMUz ANB33FDSMT NHMUR3 NHMUR4 Motor output 2 4 Cooling 33 Heating 33 Starting method Inverter Crankcase heater Heat exchanger Plate fin coil Anti corrosion fin treatment Fan Fan drive x No Propeller fan x 2 Fan motor output kW 0 086 0 086 Airflow m min CFM 100 3 530 Dimensions HxWxD 950 37 13 32 D mm in 330430 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 MEL56 NHMU FV50S NHMU NHMUR3 NHMUR4 High pressure protection HP switch Discharge thermo Over current detection INHMU NHMU NHMU Compressor thermo Over current detection NHMUR3 NHMUR4 Capcity control Compressor protection Fan motor protection Overheating Voltage protection Total Piping length Max m ft 120 394 Farthest m ft
113. erated ACTM does not operate when the compressor is stopping Including constraint electric continuity and for 10 seconds after the compressor 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 BS rush current protect resistor is resistor RS not mounted on the board For PUMY P36NHMU NHMUR1 NHMURA4 BS P48NHMU2 NHMUR3 NHMURA4 BS 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 G Airflow path is clogged Rise of ambient temperature Defective thermistor amp Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit 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 46 115 F Turn off power and on again to check if 4230 is displayed within 30 minutes Check thermistor lt TH8 gt temperature by microprocessor Replace outdoor power circuit board Replace outdoor controller circui
114. erations which means the interlock operation shown in c will be possible 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 i T Electric Heating or Hot VVater Heating 2 Outdoor unit DIPSW4 4 for auxiliary heating control Set DIPSW4 4 when power is turned off at unit OFF Disable auxiliary heating function Initial setting ON Enable auxiliary heating function OC366H 2 3 Determine required indoor fans speed during defrost mode a With no auxiliary heating output the indoor fan normally goes off to prevent cold drafts during the defrost cycles b With auxiliary 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
115. ermistor lt Discharge Compressor gt 52C Relay CN51 Connector Connection For Option TH6 Thermistor lt Low Pressure Saturated gt Controller Circuit Board LED1 LED2 LED Operation Inspection Display TH7 Thermistor lt Outdoor gt Switch lt Display Selection gt LED3 LED Power Supply to Main Microprocessor gt TH8 Thermistor Heatsink Switch Function Selection F1 F2 Fuse lt T6 3AL250V gt DCL Reactor Switch lt Test Run gt X501 505 Relay ACTM Active Filter Module Switch lt Model Selection gt M NET Power Circuit Board CE Main Smoothing Capacitor Switch lt Function Selection gt TP1 ConnectionTerminal lt Ground gt Caution for electrical work Use copper supply wires Cautions when Servicing e 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 230 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 LED2 L
116. es open Normal Replace Noise filter board and check 52C relay wiring power board and ACTM Circuit diagram 52C relay 1 1 As for PABNHMU 52C relay and RS 12V DC from multi Afer RS1 resistor 1 mounted on noise filter circuit board board CNLVB 208 230V 10 AC Noise filter circuit board i Dee gr xia 208 230V if Q 10 AC L2 Power circuit board circuit TB1 CNDC PNK 31 280 350V DC H To multi controller board 208 230V 10 AC 208 230V 10 AC CNDC PNK CNAC1 WHT CNACA RED 5 3 1 21 M NET power board Multi controller board OC366H Check method of 1 ACTM check Active Filter Module Is the voltage of main incoming power 208 230V 10 AC Yes Is the voltage of CNDC PNK on multi board 330 350V DC during cooling or b Test points are limited To check the voltage of the parts on this board with a tester is difficult due to its location Check the breaker and power heat
117. essor 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 indoor fan motor Malfunction of indoor fan motor C 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 49 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 Defective outdoor controller board Defective action of linear expansion valve 49 Malfunction of fan driving circuit 9 Solenoid valve SV1 performance failure High pressure cannot be controlled by SV1 0 High pressure sensor defective High pressure sensor input circuit defective in multi controller board 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 09 Check the inspected temperature of outside temperature thermistor on LED display 5 46 Check the connector 63H on outdoor controller board Check linear expansion valve 49 Replace outdoor controller board Check the s
118. for 2 minutes 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 gt 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 GwWhen 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
119. ft Remote controller line 12 39 ft Refer to 8 3 9 Decline of transmission line voltage and signal by unmatched kind of line Shield wire CVVS CPEVS Wire diameter 1 25 m AWG16 or more Mis operation of origin controller which happens by chance Check the transmission wave noise on the transmission line off power supply of outdoor unit indoor unit and lossnay for 2 minutes 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
120. ge Defective drain Check the drain function 1 Suspensive Abnormality when float switch Clogged drain pump detects to be in the water and drain pump Clogged drain pipe turns on and off except during cooling or Adverse flow of drain in other units mode Defective moving part of float switch Check moving part of float switch Abnormal when detecting that the drain Foreign matter on the moving pump turns on and off again within 1 hour part of float switch ex sludge etc after the detection of water leakage Defective float switch G Check the value of resistance with the suspensive abnormality and repeats the float switch ON OFF detection twice 2500 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 Detected that liquid pipe temperature room temperature 10deg 18 F Operation mode When drain pump turns on as float switch detects to be in the water except during cooling dry mode 0 6 min 6 min Drain pump ON OFF Float switch ON lt 5 rE OFF 15 sec 3 115 sec In the water In the air In the water In the air In the water Water leakage suspensive abnormality Water leakage abnormal
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122. h the indoor unit of the same group MA Longest transmission cable length The same as above MA remote controller cable length 7 6 8 200 m 656 ft 0 3 1 25 mm AWG22 to AWG16 OC366H TB7 IEN 31 The second MA remote controller is connected with the terminal block TB15 for the MA remote controller of the same indoor unit IC as the first remote control D Example of a group operation with 2 or more outdoor units and MA remote controller Shielding wires and address settings are necessary Examples of Transmission Cable Wiring OC 53 7 1 45 X Power Suppl Unit Group Group Shielded Wire Sub Remote Controller Group 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
123. hat is running soon after powered on is slow to speed up OC366H The rate of speed up is kept at 2 Hz min during 4 hours after powered on This can prevent a compressor failure that occurs when a non energized compressor speeds up rapidly with refrigerant collected in the compressor 54 9 5 INTERNAL SWITCH FUNCTION TABLE PUMY P36NHMU BS PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS PUMY P48NHMU BS PUMY P48NHMU BS PUMY P48NHMU x BS PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS Switch The black square indicates a switch position Operation in Each Switch Setting Function ON OFF When to Set Remarks SW U1 1s digit SW U2 10ths digit Rotary switch 10ths digit AN Ne v SWU1 1s digit Before turning the power on Initial settings Qui as Os SWU2 SWU1 10ths digit 1s digit SW1 Digital Display Switch ON OFF 12345 67 8 Can be set either during operation or not Initial settings ON OFF 12345678 5 2 Function Switch Selects operating system startup Does not start up Start up Connection Information Clear Switch Clear Do not clear Before turning the power on Abnormal data clear switch input Clear abnormal data Normal OFF to ON any time after the power is turned on Pump down Run adjustment mode Normal During compressor running Auto change over from
124. he transmission terminal block TB3 24 30V DC No Yes 24 30 Is the incoming main voltage No S EE INE power supply 208 230V 10 AC Check ve Yes 208 230V AC Disconnect the indoor outdoor transmission wiring from the terminal block TB3 and check the voltage between 1 and M2 on TBS again 24 30V DC Yes No 24 30V DC Check wiring Correct the short circuit point on transmission power board the M NET transmission line 24V 30V DC 2 M NET transmission power board Multi controller board prune Noise filter qo circuit board 208 230V 4321 10 AC 1 12 Lp n pal 2 1 CN102 CNS1 WHT seis CNAC1 WHT RED CN1 vv 208 230V 24V 30V DC Non polar 10 To Indoor Unit OC366H 64 9 8 5 HIGH PRESSURE SENSOR out V MULTI CONTROLLER BOARD 4 5 2 5 SENSOR 0 5 up Q Q 5V DC Output Vout DC PRESSURE Thermistor feature chart 50 Low temperature thermistors Thermistor Outdoor pipe TH3 Thermistor Low pressure saturated temper
125. he 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 5 on the terminal block for central control 7 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 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 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 Use the smallest address of all the indoor units plus 50 Outdoor Unit 91 to 100 The address automatically becomes 100 if it is set as 01 50 Main Remote Controller 101 to 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 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 electric
126. hen detected pressure in high pressure sensor is 0 1 MPa 14 5PSIG or less during the operation the compressor stops and restarts operation in 3 minutes When the detected pressure is 0 1 MPa 14 5PSIG 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 High pressure sensor failure Check the high pressure sensor Internal pressure decrease by gas Check the internal pressure leakage Connector contact failure Check the high pressure sensor disconnection Multi controller board input circuit failure Check the high pressure sensor Current sensor error Correct the wiring U V W phase to 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 outdoor power circuit board Decrease of power supply voltage Defective circuit of current sensor compressor Outdoor power circuit board Replace outdoor power circuit board Check the facility of power supply Disconnected float switch connector Abnor
127. igerant 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 Joint Branch Header 4 branches Branch Header 8 branches CMY Y62 G E CMY Y64 G E CMY Y68 G E Permissible Length W Select Each Section of Refrigerant Piping 1 Refrigerant Piping Diameter In Section 2 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out From Branch to Indoor Unit Indoor Unit 1 Section From Outdoor Unit door Unit Piping Diameter Piping Diameter to First Branch A Model Piping Diameter mm inch Model number Piping Diameter mm inch 2 Sections From Branch to PUMY P36 48 Liquid Line 49 52 3 8 Liquid Line 96 35 1 4 Indoor Unit a b c d e Gas Line 15 88 5 8 Gas Line 412 7 1 2 3 Section From Branch to Liquid Line 49 52 3 8 Bana B C 241054 Gas 15 88 5 6 Select the size from the right table 3 Refrigerant Piping Diameter In Section From Branch to Branch Liquid Line mm inch Gas Line mm inch 9 52 3 8 15 88 5 8 Additional refrigerant charge Additional Charge Refrigerant of 3kg 6 6 lbs equivalent to 50m Additional Liquid pipe size Liquid pipe size Refrigerant 165 ft total extended piping length is ref
128. indoor units Cooling Heating Cooling Heating Cooling Heating Cooling Heating 24 000 26 900 2 32 9 2 10 2 10 2 25 000 28 000 i 2 41 9 6 10 6 Note some combination patterns numerical value of the heating data may differ slightly CAPACITY about several hundred Btu h OC366H 15 5 4 CORRECTING COOLING AND HEATING CAPACITY 5 4 1 Correcting Changes in Air Conditions 1 The performance curve charts Figure 1 2 show the ratio by the temperature condition change when the rated capacity total capacity and the rated input are presumed 1 under standard length 7 6 m 25 ft and standard temperature condition Standard conditions __ 26 7 W B 19 4 D B 80 F W B 67 F Rated cooling capacity s 35 D B 95 F Rated heating capacity Indoor 21 1 0 70 Outdoor 8 3 C W B 6 1 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 th
129. ing operation Yes Is the voltage between 3pin and Yes of CN2 on multi controller board 18V DC No Check wiring Normal Replace multi controller board Check 52C relay Check ACTM TIME CHART ON 208 230V Power supply OFF ON 52C rela 4 PER ex 48Hz COMP Hz min Hz 350V 290 325V 330 350 290 325V Bus bar voltage DC OV i ON ACTM OFF OFF power on starts stop 208 230V Multi controller board operate 330 350V DC ise filter circui o stop 290 325 DC Noise boardi 10 m S 7 P36NHMU ee 5 208 230 conv circuit 1 10 AC EM e NO mE NI pa 12 208 230V 10 AC TB Power board CN 3 4pi U V 10 180 U W 10 180 V W 10V 180V gt 1 038 jj 66 b POE IN S 72777 41 2 2 6 22 za 77 E foe operate 330 350V DC stop 290 325 DC 63 Check method of M NET transmission power board lt M NET transmission power board check b 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 voltage between M1 and M2 on t
130. ing screws motor 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 4 Remove all the following connectors from Multi controller board fan motor thermistor lt Outdoor pipe gt thermistor lt Discharge Compressor gt thermistor lt Low pressure saturated temp gt thermistor lt Outdoor gt high pressure switch high pressure sensor low pressure switch 4 way valve coil and bypass valve coil Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 CNF2 Thermistor Outdoor pipe TH3 Thermistor lt Discharge Compressor gt TH4 Thermistor Low pressure saturated temp Outdoor TH6 7 High pressure switch 63H High pressure sensor 63HS Low pressure switch 63L Solenoid valve coil Four way valve 2154 Solenoid valve coil Bypass valve SV1 5 Remove the terminal cover and disconnect the compres sor lead wire OC366H 88 Electrical parts box Multi controller board MULTI B Terminal block TB7 Terminal block Cover panel Front Cover panel fixing screws Continued to the next page From the previous page OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 6 Remove electrical parts box fixing screw 4 x 10 and detach the electrical parts box
131. inked 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 If it is desired to display the address 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 to the normal mode after completing entry Press the FILTER and 9x buttons on the remote controller simulta neously and hold for 2 seconds to return to the normal mode Figure 4 B Making paired settings Figure 5 Completing normal entry 7 ome mam DESEE alternating s will appear 5 when entry is completed normally The addresses of indoor unit and linked units are display A flashing 88 will appear if there is a problem with the entry indicating that the AGA unit does not exist ona INDOOR UNIT ERROR CODE ADDRESS NO OAUNITADDRESS displayed simultaneously OC366H 35 2 Address check Refer to section 1 regarding address entry a In making group settings T
132. ircuit figure out the total refriger ant amount by adding each independent refrigerant circuit OC366H 87 2 Calculate room volumes nv f 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 15 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 calculations 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 maximum concentration The smallest room in which an indoor lbs ft3 unit has been installed nv ft Maximum concentration of R410A 0 3kg m 0 019lbs ft 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
133. ise or interference on the transmission path or the indoor unit The number of data errors is the difference 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 N 128 When the number of data errors is 02 Transmission data from remote controller 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 OC366H 52 9 3 REMOTE CONTROLLER TROUBLE MITSUBISHI ELECTRIC indicator Appears when current is carried e m lt gt lt 6556 Remote controller 1 For M NET remote controller systems Symptom or inspection code Cause 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 con
134. istor lt Low pres sure saturated temp gt OC366H 89 Photo 6 PUMY P48NHMU Lead wire of thermistor Sensor holder lt Outdoor gt TH7 PUMY P36NHMU R1 R4 P48NHMU R3 R4 Lead wire of thermistor Outdoor TH7 Sensor holder OPERATING PROCEDURE PHOTOS 6 Removing the thermistor Outdoor pipe TH3 and ther Photo 7 Thermistor mistor lt Discharge Compressor gt 4 Outdoor pipe 1 Remove the service panel See Figure 1 2 Disconnect the connectors TH3 white and TH4 white on the Multi controller board in the electrical parts box 8 Loosen the clamp for the lead wire in the rear of the elec trical parts box 4 Pull out the thermistor Outdoor pipe TH3 and ther mistor lt Discharge Compressor gt TH4 from the sensor holder Thermistor Compressor Thermistor Compressor MC Discharge 4 TH4 7 Removing the 4 way valve coil 21S4 Photo 8 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 Removing the 4 way valve coil eel 3 Remove 4 way valve solenoid coil fixing screw M4 x 6 4 Remove the 4 way valve coil by sliding the coil toward you 5 Disconnect the connector 21S4 green on the Multi con troller board in the electrical parts box f valve 8 Removing the 4 way valve E H Thermistor 1 Remove the service panel See Figure 1 NN a lt Low pressure 2 Remove th
135. ity Within 1 hour Within 1 hour OC366H 39 Display Abnormal point and detecting method Causes Check points 2502 Drain sensor model Drain pump DP Drain sensor thermistor is heated and when only a fraction of the temperature rise is detected the system determines abnormality to defer the error to stop operation and changes to protection mode to restart the system in 3 minutes Drain pump is abnormal if the condition above is detected during suspensive abnormality 2502 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 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
136. mal if detected that the float Switch connector is disconnected open during operation Disconnection of connecor CN4F Check the disconnetion of connector CN4F on the indoor controller board OC366H 46 Abnormal point and detecting method Causes Check points 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 Note Address Attribute displayed on the remote controller shows the controller detecting abnormality the transmission processor transmitted 0 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
137. n the power circuit board When controller detects short open in Connector TH8 contact failure 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 5110 is displayed Check whether the thermistor wiring Thermistor wiring disconnection or is disconnected or not half disconnection G Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 180 10 C 50 105 20 C 68 F 63kQ 30 C 86 F 39kQ 40 C 104 F 25kQ 12345678 Setthe SW1 to 2 When the temperature in multi controller board is not an actual temperature replace the power board For 10 minutes after starting compressor Thermistor failure for defrosting or for 3minutes after recover of defrosting above mentioned short open are not detected Short 102 C 216 F or more Open 35 81 F or less Power board input circuit failure See 9 5 SWITCH FUNCTION TABLE SW4 model switching then set correctly When SW4 1 is on it will be 5110 error Set correctly Wrong setting of model setting switch SW4 Pressure sensor 63HS W
138. n same abnormality occurs again it is defective of the controller Display Abnormal point and detecting method Causes Check points 6607 No ACK Acknowledgement Abnormality which controller of the sending side detects when there is no answer ACK 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 OC366H 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 8 3 Decline of transmission line voltage and signal by unmatched kind of line Shield line CVVS CPEVS Line 1 25 mm more Decline of transmission line voltage and signal by
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140. ndoor unit Wires connecting indoor units 2 wires non polar Wires connecting indoor units with outdoor unit Transmission wires 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 25 mm AWG 16 Maximum wiring length Within 200 m 656 ft 10 3 3 M NET Remote controller wiring Kind of remote control cable Shielding wire MVVS Cable diameter 0 5 to 1 25 mm AWG 20 to AWG 16 When 10 m is exceeded use cable with the same Remarks 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 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 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 Example using a M NET remote controller Breaker for Wiring and Current Leakage Outdoor Power supply uni
141. nit 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 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 Range Setting Method 001 to 050 Use the smallest address of all the indoor unit plus 50 Indoor unit address plus 100 Unit Indoor unit IC Outdoor unit OC 051 to 100 Remote 101 to 150 controller RC 2 Operation using 2 remote controllers a Same as above b Same as above c Set address s
142. oints Pipe temperature judging defrost thermistor TH3 when controller detects short open in thermistor during the operation the outdoor unit stops once and restarts operation in 3 minutes 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 3 minutes 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 TH3 contact failure Thermistor wiring disconnection or half disconnection G Thermistor failure Multi controller board input circuit failure Check whether the connector TH3 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 15kQ 10 C 50 F 9 6kQ 20 C 68 F 6 3kO 30 C 86 F 4 3kO 40 C 104 F 3 0kQ 12345678 Set the SW1 to When the temperature in multi controller board is not an actual temperature replace the multi controller board Outdoor temperature thermistor TH7 When controller detects short open in thermisto
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144. olenoid valve performance Check the high pressure sensor Check the high pressure sensor Superheat due to low discharge temperature Abnormal if discharge superheat is continuously detected less than or equal to 15 C 27 F even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes OC366H Disconnection or loose connection of discharge compressor temperature thermistor TH4 Defective holder of discharge temperature thermistor 38 Check the compressor installation conditions of discharge temperature thermistor 4 Abnormal point and detecting method Causes Check points Refrigerant shortage Q Gas leakage Gas shortage Check the refrigerant amount When the conditions of below detecting When heating operation refrigerant mode I or II are satisfied during the shortage feeling operation When Check the operation condition and compressor operation heating airflow or thermo OFF are refrigerant amount Detecting mode I gt mixed operation it causes a refrigerant When the below conditions are satisfied shortage operation completely 9 Ball valve performance failure Check the ball valve is fully open 1 Compressor is operating in HEAT mode not full opened 2 Discharge superheat is 80 C 144 F or more Error detection of discharge superheat 3 Difference of outer temperature thermistor 1 High pressure s
145. ols Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for Use the existing fitting specifications Use high tension side pressure of 5 3MPa G or over Charge hose Only for R410A Use pressure performance of 5 09MPa G or over Electronic scale Use the detector for R134a R407C or R410A Gas leak detector Attach on vacuum pump Adaptor for reverse flow check Q Refrigerant charge base Only for R410A 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 in a 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 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 remov
146. ompressor starts operating Over current 27 5A OC366H Stop valve is closed 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 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 amp 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 Disconnection or loose connection of CNAF Notes in case of 4220 error Over voltage or voltage shortage Check th
147. oor 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 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 TENE Abnormal if rotational frequency of the fan Failure in the operation of the DC fan motor Check or replace the DC fan motor motor is not detected during DC fan motor operation Failure in the outdoor circuit controller board 2 Check the voltage of the outdoor circuit Fan motor rotational frequency is abnormal if controller board during operation 100 rpm or below detected continuously for 15 seconds at 20 C 68 F or more 8 Replace the outdoor circuit contrlooer outside air temperature board when the failure is still indicated 50 rpm or below or 1500 rpm or more even after performing the remedy 1 detected continuously for 1 minute above Room temperature thermistor TH21 Check whether the connector When controller detects short high Connector CN20 contact failure CN20 in the indoor controller board temp open low temp in thermistor is connected or not during the operation the operation stops and the operation changes to protect mode of restarting in 3 minutes If the thermistor does not recover in 3 minutes Check the resistance of
148. or standards The following standards may be applicable if local regulations are not available 11 3 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 deleterious 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 guidelines S0010 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 concentration of R410A O 3kg mr 0 019lbs ft3 KHK installation guidelines S0010 Outdoor unit Direction of refrigerant flow Indoor unit refrigerant of this system will leak out to this room if there is leakage at this indoor unit 11 3 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 a single refrigeration system consists of several independent refrigeration c
149. or vacuum gauge Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A X 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 OC366H 3 OVERVIEW OF UNITS 3 1 UNIT CONSTRUCTION Outdoor unit P36 P48 Capacity Type 06 Type 36 Type 06 Type 54 Number of units 1 6unit 1 8unit Indoor unit that can be connected Total system wide capacity 5096 13096 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 Ceiling T Ceiling vertical Ceiling Concealed mounted Wall Mounted Beni Floor Standing concealed 4 way flow 2 way flow 1 way flow built in Exposed Concealed Fresh Ceiling Cassette PLFY P PLFY P PMFY P PEFY P PDFY P PKFY P PCFY P NCMU E NBMU E NLMU E NBMU E NMHU E NMSU E NMU E NAMU E NGMU E NGMU E NEMU E NRMU E NMHU E F f HTTP ET en D
150. osition change may occur in refrigerant and the efficiency will be lowered Do not use refrigerant other than R410A Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and on the spec labels provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc 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 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 OC366H 5 3 Service to
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152. 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 OC366H 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 pump works Check drain function 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 0 GCheck 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
153. ppear 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 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 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 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 447 INDOOR UNIT ADDRESS NO JOAUNIT ADDRESS NO OC366H 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 ceas
154. r during the operation the outdoor unit stops once and restarts operation in 3 minutes 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 3 minutes after recover of defrosting above mentioned short open are not detected Short 90 C 194 F or more Open 40 40 F or less OC366H Connector contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure 45 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 0 32 10 C 50 F 20 C 68 F 30 C 86 F 6 3kQ 4 8kQ 40 C 104 F 3 0kO 12345678 Set the SW1 to T When the temperature in multi controller board is not an actual temperature replace the multi controller board Display Abnormal point and detecting method Causes Check points 5110 Heatsink temperature thermistor TH8 internal thermistor of power module D Check whether the connector TH8 i
155. r units 2 Method of obtaining total current 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 lt A gt 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 parts and in the above table to calculate the system power factor Total system power consumption System power factor x 100 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 OC366H 82 11 REFRIGERANT PIPING TASKS 11 1 REFRIGERANT PIPING SYSTEM Line Branch Method Connection Examples Connecting to 4 Indoor Units Outdoor Unit First Branch O Indoor unit Total Piping Length 120m 394ft Permissible Farthest Piping Length L 3 80m 262ft Length Farthest Piping Length After Firs
156. rd 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 Check the resistance of thermistor OC 32 F 15kQ 10 C 50 F 9 6 20 C 68 6 3kQ 30 C 86 4 40 C 104 F 3 0 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 3 minutes 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 G Thermistor failure Multi controller board input circuit failure 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 32 F 15kQ 10 C BO F
157. re gt SWU2 Switch Unit Address Selection 10ths digit 63H High Pressure Switch TRANS Transformer 63L Low Pressure Switch LED1 2 Digital Indicator lt Operation Inspection Display gt Main Smoothing Capacitor LED3 LED Power Supply to Main Microcomputer ACTM Active filter Module CNS1 Connector Multi System RS Rush Current Protect Resistor CNS2 Connector Centralized Control DCL Reactor CNAC Connector To Noise Filter Circuit Board P B Power Circuit Board CNDC Connector Power circuit board U V W Connection Terminal lt U V W Phase gt CN2 Connector To Power Circuit Board 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 Control Power Supply gt TAB N N1 N2 Terminal lt DCVoltage gt CN41 Connector lt For storing Jumper Connector gt CN2 5 Connector 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 Low Pressure Switch CNF1 CNF2 Connector Fan Motor gt 2184 Connector Four way Valve SV1 Connector Bypass Valve 55 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
158. rigerant charge Total length of Total length of amount for outdoor already included when the outdoor unit is 9 52 x 0 06 kg 6 35 x 0 024 kg unit shipped 3 8 x 0 041 Ibs 1 4 x 0 016 Ibs a oes piping oe is kg m x 0 06 kg m m x 0 024 kg m 3 0kg m t or less there is no need to yi pe charge with additional refrigerant lbs ft x 0 041 Ibs ft ft x 0 016 Ibs ft 6 6 Ibs If the total extended piping length exceeds Example 50m 165 ft calculate the required additional Outdoor model P48 refrigerant charge using the procedure Indoor shown on the right 24 9 52 3 8 10 m 33 ft 49 52 3 8 15m 49 ft If the calculated additional refrigerant charge 15 B 49 52 3 8 10 m 33 ft 6 35 1 4 10m 33 ft At the is a negative amount do not charge with any 08 49 52 3 8 10 m 33 ft 6 35 1 4 10m 33 ft conditions refrigerant P06 6 35 1 4 10m 83 ft below 6 35 1 4 10m 33 ft The total length of each liquid line is as follows 49 52 10 10m 10m 15 m 45 m 33 ft 33 ft 33 ft 49 ft 148 ft 6 35 6 10 10 10 10 40 m 33 ft 33 ft 33 ft 33 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 148 ft x 0 041 lbs 132 ft x 0 016 Ibs 6 6 lbs 1 58 Ibs OC366H 85 11 2
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160. s follows by PLFY P18NLMU E will be calculated as follows by using the formula in 5 1 2 1 using the formula in 5 1 2 1 8000 9000 Model 08 48 900 x 52000 7 520 Btu h Model 08 54 500 x 58000 8 460 Btu h Model 18 48 900 x 26000 16 930 18 54 500 oe 18 790 Btu h 52000 j 58000 OC366H 12 5 2 STANDARD OPERATION DATA REFERENCE DATA 5 2 1 Cooling operation Outdoor unit model Operation PUMY P36NHMU PUMY P48NHMU Ambient tem Indoor DB WB 26 7 C 19 4 C 80 F 67 F 26 7 C 19 4 C 80 F 67 F perature Outdoor 35 95 35 95 F No of connected units Unit 3 4 Indoor unit No of units in operation 3 4 Operating Model mz 12 12 conditions Main pipe 5 16 3 8 5 16 3 8 Piping Branch pipe m ft 2 5 8 1 4 2 5 8 1 4 Total pipe length 12 5 41 15 49 1 4 Fan speed Hi Hi Amount of refrigerant kg 65 02 8 5 18 8 5 18 Electric current A 14 1 19 6 Outdoor unit Voltage V 230 230 Compressor frequency Hz 59 82 LEV opening Indoor unit Pulse 271 326 Pressure High pressure Low pressure MPa psi 2 75 0 94 399 136 3 06 0 91 444 132 Discharge 65 149 75 167 Heat exchanger outlet 42 106 46 115 Outdoor unit Accumulator inlet 9 48 8 46 ee each Compressor inlet F 10 50 9 48 Compressor shell bottom 69 156 79 174
161. should be 152 Three or more remote controller RC cannot be connected to 1 indoor unit Same as above 01 02 TB5 15 TBS 15 Mwjvds 112 wjvds 112 The remote controller address is the indoor unit main address plus 100 In this case it should be 101 OC366H 27 B Example of a group operation system with 2 or more outdoor units and M NET remote controller Shielding wires and address settings are necessary Examples of Transmission Cable Wiring OC 51 TB3 TB7 3 Group Shielded Wire Sub Remote Controller e Group 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 TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on t
162. t Branch 2 30m 100ft Permissible High High Low Difference in Indoor Outdoor Section 50 meters 164ft or less If the outdoor unit is lower 20 meters 7Oft or less Low Difference High Low Difference in Indoor Indoor Section h 12 meters 39ft or less W Selecting the Refrigerant Branch Kit W Select Each Section of Refrigerant Piping 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 Select the size from the right table 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Outdoor Unit Piping Diameter Model Piping Diameter mm inch Liquid Line 29 52 3 8 Gas Line 415 88 5 8 Indoor Unit Piping Diameter Model number Piping Diameter mm inch Liquid Line 96 35 1 4 Gas Line 12 7 1 2 Liquid Line 69 52 3 8 Gas Line 415 88 5 8 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 9 52 3 8 15 88 5 8 W Additional refrigerant 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
163. t board 1 Power module Check abnormality by driving power module in case overcurrent is detected OC366H Outdoor stop valve is closed Decrease of power supply voltage 9 Looseness disconnection or converse of compressor wiring connection Defective compressor G Defective outdoor power circuit board 42 D Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board Check compressor Replace outdoor power circuit board Contimued on the next page Abnormal point and detecting method Causes Check points 2 Compressor overcurrent interruption Stop valve of outdoor unit is closed D Open stop valve Abnormal if overcurrent DC bus or Decrease of power supply voltage 2 Check facility of power supply compressor is detected after compressor Looseness disconnection or converse 3 Correct the wiring U V W phase to starts operating for 30 seconds of compressor wiring connection compressor Defective fan of indoor outdoor units Outdoor power circuit board Over current 27 5A Short cycle of indoor outdoor units Check indoor outdoor fan amp Defective input circuit of outdoor amp Solve short cycle controller board Replace outdoor controller circuit board Defective compressor 0 Check compressor Before the replacement of the outd
164. t only n case of connecting the system controller the setting of the system controller does not correspond to that of MA remote controller fuse on the indoor unit Master controller board is blown In case of the entire system or in is not displayed on the remote controller MA remote controller is not fed 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 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 In case of in same group only or 1 indoor unit only Check the items shown in the left that
165. te 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 OC366H 34 9 1 2 Special Function Operation and Settings for M NET Remote Controller t is necessary to perform group settings and paired settings at making group settings of different refrigerant systems 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 buttons on the remote controller are pressed simul taneously and held for 2 seconds the display shown in Figure 1 will appear Changing address Press the temperature adjustment GDCD 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
166. ted with the indoor unit of the same group wiring together OC366H 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 Piping 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 MO Do not proceed inspection if the resistance in under 1 0 MO 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
167. the unit is in open error condition is described to determine open error by tester check OC366H 72 Jequunu 02 foede 0004 oN a 000LLLLO 00011101 00011100 000110 00011010 00011001 00011000 0001011 00010110 66 0001001 0001010002 0001001161 0001001081 00010001141 0001000091 0000111191 06 6 8c 42 92 Sc ve c 15 y 5 aui oN apoo Ayoedeg ON uun apoo 108 3 1121 UN ON 99 T o 2 7 Ajoedeo unjoopuz ov apos Joopul Aejdsiqe 14 440 oway 001461 NO oway L yo 1961 uej dois 1461 ON apoo 100 uoneJedo g oN jun oN yun uogesado pun c oN jun yun z oy uogejedo 0 yun 100 epou jun g oN epoui yun lepouJ yun 9 yun G ON epoui yun yun g oy uogeiado yun uoeredo e eye juen7
168. thermistor the operation stops due to detecting Thermistor failure OC 32 F 15kQ abnormality In this time lt 5101 gt is 10 C 50 F 9 6kQ displayed Then if the thermistor recover 20 C 68 F in 3 minutes it operates normally 30 C 86 F 40 104 F 3 0kQ Check whether the thermistor wiring Thermistor wiring disconnection or is disconnected or not half disconnection Short Detected 90 C 194 F or more When there is no problem in above Detecting circuit failure in the mentioned O replace the indoor Open Detected 40 C 40 F or less indoor controller board controller board Discharge Compressor temperature thermistor TH4 When controller detects short open in Connector TH4 contact failure Check whether the connector TH4 thermistor during the operation the in the multi controller board is outdoor unit stops once and restarts connected or not operation in 3 minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts When controller detects short open in Thermistor wiring disconnection or Check whether the thermistor wiring thermistor at just before of restarting the half disconnection is disconnected or not unit stops due to detecting abnormality In this time 5101 is displayed For 10 minutes after starting compressor Thermistor failure Check the resistance of thermistor for defrosting or for 3 minutes
169. tion 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 50 164 1 Chargeless length m ft 50 164 mmf inch 9 52 3 8 Piping diameter Gas mm inch 15 88 5 8 cool 5 46 C DB 23 115 DBJ 2 Guaranteed operation range heat Rating conditions Cooling Indoor 26 7 C W B 19 4 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 F Outdoor 8 3 W B 6 1 C D B 47 F W B 43 F OC366H 18 15 WB 0 60 F WB Note 1 20m 708 In case of installing outdoor unit lower than indoor unit 2 10 46 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 P18BM type Btu h kW x 3 412 x 35 31 Ibs kg 0 4536 Above specification data is subject to rounding variation 10 Service Ref PUMY P48NHMU BS PUMY P48NHMU1 BS PUMY P48NHMU2 BS Item PUMY P48NHMUR3 BS PUMY P48NHMUR4 BS Cooling Capacity Btu h 48 000 Heating Capacity Btu h 54 000 Input Cool 3 kW 4 97 Input Current Cool 3 A 24 0 21 7 Power factor Cool 3 99 5 Input Heat 3 kW 4 88 Input Current Heat 3 23 6 21 3 Pow
170. transmitting the signal for 30 times on end QD Defect of the transmission and reception circuit of the remote controller Noise occurs on the transmission line of the remote controller There are 2 main remote controllers Perform 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 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 13096 of the outdoor unit models error code 7100 is displayed OC366H Connecting total models of the indoor unit exceed the specified level PUMY P36NHMU NHMUR1 NHMURA code 26 34 PUMY P48NHMU2 NHMUR3 NHMUR4 code 35 Q There is a mistake in the registration of model name code of the outdoor unit 50 D Check the total models of connected indoor unit Check the model code registration switch indoor controller board SW2 of connected indoor unit Check th
171. troller is not set correctly Check the part where the abnormality occurs The entire system The group setting between outdoor units is not registered to the remote controller The fuse on the indoor unit controller board is blown Though the indoor unit operates The power supply of the indoor unit is not on The fuse on the indoor unit controller board is blown In the entire refrigerant system In same group only 1 indoor unit only n case of the entire system or in the display of the remote controller goes out soon the entire refrigerant system is not displayed on the remote controller M NET remote controller The connector of transmission outdoor power board is not connected is not fed Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit The power supply of the outdoor unit is not on 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 In case of in same group only or 1 indoor unit only Check the items shown in the HO keeps being displayed or it is
172. ture 9 9 TEST POINT DIAGRAM Outdoor multi controller board PUMY P36NHMUR1 BS PUMY P36NHMUR4 BS 48 PUMY P48NHMU BS PUMY P48NHMUR4 BS EW y defrost orced defros d Moda select signal Cornea to the M P B utput Transmission power board PUMY P36NHMU BS PUMY P48NHMU BS PUMY P48NHMUR3 BS SW2 SW3 Pump down Test run 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 ty Tp et 5 m r3 E 63L Low pressure switch 63H High presser switch CN3D 5 Input of demand control TH4 Thermistor LM lt Discharge Compressor gt 8 LJ TH3 Thermistor lt Outdoor pipe gt 7 6 Thermistor lt Outdoor Saturation tem perature of suction pressure 63HS High presser sensor Vea TEST POINT voltage between left pins of PC511 and PC512 and pin2 Same as CNF1 2 2nd DIGIT tat DIGIT Swu2 Swut H 8589 888 Corsu 1665 m P lt 8 lecsu 1
173. uivalent NEW frequency converter to Cooling capacity one to many air conditioners flexible design type Indicates equivalent to Cooling capacity 2 Operating temperature range Power supply N Single phase 208 230V 60Hz Cooling Heating Indoor side intake air temperature W B 15 24 59 75 F 15 27 59 81 F Outdoor side intake air temperature Notes D B Dry Bulb Temperature W B Wet Bulb Temperature 1 10 46 DB 50 115 FDB In case of connecting PKFY P06 P08 type indoor unit m case of connecting fresh air type indoor unit 5 46 23 115 96171 W B 18 15 C 0 60 F Capacity of Fresh air type indoor Cooling Heating Indoor side and Outdoor side P30 D B 21 43 C 70 109 F 2 W B 15 5 35 C 60 95 F D B 10 20 C 14 68 F 3 intake air temperature P54 D B 21 43 C 70 109 F 2 W B 15 5 35 C 60 95 F D B 5 20 C 23 68 F 3 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 OC366H 4 SPECIFICATIONS Service Ref Item PUMY P36NHMUR 1 BS PUMY P36NHMU BS PUMY P36NHMUR4 BS Cooling Capacity 36 000 Heating Capacity 40 00
174. unit detects abnormality at signal transmitting to the lossnay 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 D Indoor unit transmission connector CN2M disconnection 5 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 9 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 49 Display Abnormal point and detecting method Causes Check points 6608 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 Transmission repeats the failure by the noise etc Decline of transmission voltage and signal by transmission line tolerance over furthest 200 m 656
175. urn off the remote controller Press the remote controller s ON OFF button to stop operation the indicator light will go off e Locate the indoor unit address display mode Press the FILTER and Sx buttons on the remote 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 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 e Put in indoor unit address display mode Press the FILTER and xx buttons on the remote controller simultaneously and hold for 2 seconds e Changing to the linked operation unit address display state Press the 12 425 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 pressing 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
176. utdoor temperature itch 63H EN acm 3 M switch 63H lt 5 8 inch gt i Strainer valve SV1 gt Capillary tube ies f Thermistor lt Saturation temperature Check valve Distributor of suction pressure gt TH6 44 Strainer High pressure Check valve lt Low press re Oil S KE Thermistor TH3 5 rainer Pipe temperature Discharge Accumulator Low pressure 2 switch 63L thermistor TH4 P36NHMUR1 P48NHMUR3 P36 48NHMUR4 Compressor 18 Hanta CERE Stop valve P Refrigerant Liquid pipe p a 3 8 inch Strainer Service port Capillary tube for oil separator 42 5 x 0 8 x L1000 mm 9 3 32 x 1 32 x L 39 1 2 inch Refrigerant piping specifications dimensions of flared connector Unit mm lt inch gt Capacity 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 9 52 lt 3 8 gt 15 88 lt 5 8 gt Outdoor unit P36 P48 9 52 lt 3 8 gt 15 88 lt 5 8 gt OC366H 25 8 3 SYSTEM CONTROL 8 3 1 Example for the System Example for wiring control cables wiring method 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 u
177. 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 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 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 Use an address other than that of the IC Main in the same group of indoor IC Sub 01 to 50 units This must be in sequence with the IC Main Use the smallest address of all the indoor units plus 50 Outdoor Unit 21107199 address automatically becomes 100 if it is set as 01 50 Main Remote Controller 101 to 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 Unn
178. witch on outdoor unit P C B as shown below Unit Indoor Unit IC Outdoor unit OC Range Setting Method 001 to 050 Use the smallest address of all the indoor units plus 50 051 to 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 TB5 15 TB5 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 TB5 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

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TECHNICAL & SERVICE MANUAL