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PUMY P-60NKMU Service Manual

Contents

1. LEV A LEV B PUMY P60N KMU 63LS 63HS TH7TH6 TH3 TH4 TH2 63H ex ele z p SQ SQ The black square IB indicates PUMY P60N KMU BS MULTIB Pm R rr fe a switch position 1 7 B fees 63 63 ET CN3D CN3S CN3N SWU2SWUI SW5 SW6 3 CNF1 1 8 14 12 12 12 WHT RED BLU S s WHT 63H me TH3 TH4 TH WEE Ba i 1 beitta Ec Wi H WHT RED WHT WHT BLK 1 31 31 3 RI K N SWi SW8 SW2 SS A lli E Quni MF2 Dt 1 3 V0 1 5 SW4 SW3 SW7 KI e i m a 8 ES hi Hi 32 VVHT sle KE LEDI LED2 CN2 RED BE BB 3 z WHT za CN4 WHT 2 illi TRANS n es 7 L CN102 PNK WHT 8 s 8 8 Vg al 2 25 71 8 8 B 8 8 333 zs E E LED3 ONS CNS2 CN41 40 520
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4. Group Group Group Shielded Wire Sub Remote Controller Address Wiring Method Address Settings a Always use shielded wire when making connections between the outdoor unit OC and the indoor unit IC as well for all OC OC and IC IC wiring intervals b Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block 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 termi nal 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 the IC Main in the same group of indoor units
5. Total capacity Power E EER COP Current A 230V Current A 208V of indoor units Cooling Heating 00 70 0 71 1 06 845 1 94 34 51 7000 Es 4 0 5 6 8000 9200 4 5 6 0 9000 10300 5 0 6 4 10000 1 xum 5 5 6 8 n 5 128 1481 895 247 6 0 72 12000 136001 133 156 904 2 56 6 5 76 fal 13000 147001 148 163 912 2 64 6 9 79 f ooo 15800 1 52 171 9 20 271 74 8 3 15000 E 7 9 8 7 16000 18000 8 3 9 0 17000 19100 8 8 9 4 18000 S i 9 2 9 8 E i i95 z m 2 00 209 952 2 98 97 10 2 20 2000022400 2 09 218 sss soo o2 s t Tor ios 21 1000 235001 2118 226 9463 3 05 10 6 110 e 20 2600 227 2341 948 3 08 110 114 23000 Tn 11 5 11 8 24000 26800 11 9 12 2 25000 27900 12 3 12 6 26000 12 8 13 1 al m er sse ai 8s s 13 2 13 5 281 28000 sizol 281 288 996 3 17 13 6 14 0 20 2900032300 290 2 98 10 01 3 17 14 1 14 5 3340 2 98 3 081 10 05 3 18 14 5 15 0 14 9 15 5 15 3 16 0 15 7 16 5 16 1 17 0 8 B 16 5 17 5 um 3 48 3722 1035 3 15 16 9 18 1 srl 37000 411001 3 56 3 841 10 40 3 14 173 18 6 4 s000 420 3 63 395 10 46 3 13 17 6 192 18 0 19 7 18 4 20 3 18 7 20 8 19 0 214 19 3 22 0 E 4 3400 ser 404 464 10 88 3 08 19 6 225 45 45000 498001 410 4751 1097 3 07 19 9 23 1 6 4000 spem 4 16 486 11 06 3 07 20 2 23 6 20 4 24 2 20 7 24 7 20 9 25 2 21 2 25 7 d k E 21 4 26 1 E s 995 seso 444 5461 1172 3 08 21 6 26 5 LE E
6. sind 6uiuedo A31 921 10000010 Aejap Aupeuuouqe sind 6uiuedo A31 ZAI 10000001 Aejap Aupeuuouqe sind 6uiuedo A31 LO 10000000 10191 uoeo pue 10sues eJnssaJd ufiu wou ejep uonoejep Jo ejdsiq 4 6666 6 66 d lhpoul 1 MOd 8H1 OLLLLELO 9ISd 0114 0 0 0124 10sues eunsseid WD OLLEELOL 6666 6 66 35 du joopino ZHL OLLLLLOO 13 9H1 OLELLOLL d edid joopino SHL OLLLLOLO d PL PHL 0111001 ejep 13612 0 1402 e Jo Aejdsiq 0 02 070 WHS WOS 2121 HS OS 100pur ebe OLLLOLLL 1191 HS OS Joop 0110110 0121 HS OS 400pu ebe 0110101 01110100 891 HS OS 1oopu 0110011 01110010 601 HS OS 100pu 291 HS OS 1oopu 901 HS OS 1oopu 01110001 S8 0N 9 S r 2 erep eldsip 2 1441 eui uo 0510 0510 8 957621 um s MS 65 OCH502 Ayeuuouqe Jo euin e A311 400pu s nd Buiuedo jo Aejdsig Kel p Ayeuuougqe jo euin ye sind Bulusdo A31 2121 LOLLLOOO Aejap Ayjeuuouqe jo w ye sind Guiuedo A31 LLOI LOLLOLLL Aejap Ajeuuouqe Jo eui ye sind 6uiuedo A31 0121 LOLLOLLO Kel p Aypeuuouqe eu ye sind Buluedo A31 621 LOLLOLOL
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8. Unit mm lt inch gt Thermistor TH7 Outdoor temperature d Distributor Thermistor TH3 Pipe temperature PUMY P60NKMU PUMY P60NKMU BS Service x Check valve port High pressure f Ball valve 4 way valve Refrigerant 5 Gas pipe Strainer Solenoid lt 3 4 gt valve SV1 Check val Oilseparator High pressure Low pressure X sre 2 sensor 63HS Capillary tbe H i High Thermistor TH6 SE Strainer d Saturation temperature of suction pressure d L Thermistor TH4 OW Pressure Compressor sensor 63LS Comp Thermistor TH2 HIC Accumulator Compressor top valve Refrigerant HIC Liquid pipe I de L ee pe 1 4 lt 3 8 gt Strainer Strainer LEV A Service port X LEV B i Strainer Capillary tube for oil separator 02 5 x 0 8 x L800 Capillary tube for solenoid valve 4 0 x 3 0 x L500 Refrigerant piping specifications dimensions of flared connector Capacity Liquid piping Strainer Gas piping P06 P08 P12 P15 P18 Indoor unit 06 35 1 4 12 7 1 2 P24 P30 P36 P48 P54 9 52 lt 3 8 gt 15 88 lt 5 8 gt P72 49 52 lt 3 8 gt 19 05 3 4 Outdoor unit P60 OCH502 9 52 3 8 20 19 05 3 4 7 3 SYSTEM CONTROL Example for the System E
9. Display Abnormal point and detecting method Causes Check points 5105 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 C 40 F or less Connector TH3 contact failure Thermistor wiring disconnection or half disconnection 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 S2 F 15kQ 10 C 50 F 9 6kQ 20 C 68 F 6 3kO 30 C 86 F 4 3kQ 40 C 104 F 3 0kQ 12345678 Setthe SW1 to on qa La When the temperature in multi controller board is not an actual temperature replace the multi controller board
10. Electromagnetic contactor CN24 OCH502 IN 2 2 UNIT CONSTRUCTION Outdoor unit P60 Indoor unit that can be connected Capacity Type 06 Type 72 Number of units 1 12 unit Total system vvide capacity CMY Y62 G E 50 13096 of outdoor unit capacity CMY Y64 G E CMY Y68 G E Branching pipe components Ceiling Cassette Branch header 2 branches Ceiling Ceiling Concealed mounted 4 way flow 1 way flow built in Branch header 4 branches Wall Mounted Branch header 8 branches Ceiling Concealed Exposed Concealed Fresh Air 1 Vertical concealed Ceiling Floor Standing PLFY P PMFY P PEFY P PDFY P PKFY P PFEY P PEFY P PVEY P NCMU E NBMU E NBMU E NMAU E NMHU E NMSU E NMU E NHMU E NKMU E E00A NBMU E Q NRMU E NMHU E F O H111116 ololololo OOO O OJOO O OO EEEE E OOO ll OO OOOO EEEE EE OOOO OJOOJO OO o o Decorative panel Remote controller Name M NET remote controller MA remote controller Model number PAR F27MEA US PAR 21MAAU J PAR 30MAAU J Functions A handy remote controller for use in conjunction with the Melans centralized management system
11. M NET Remote controller 1 For M NET remote controller systems Symptom or inspection code Cause Indicator appears when current is carried Inspection method and solution Though the content of operation is displayed on the remote controller some indoor units do not operate The power supply of the indoor unit is not on The address of the indoor units in same group or the remote controller is not set correctly The group setting between outdoor units is not registered to the remote controller The fuse on the indoor unit controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit is not on The fuse on the indoor unit controller board is blown is not displayed on the remote controller M NET remote controller is not fed The power supply of the outdoor unit is not on The connector of transmission outdoor power board is not connected The number of connected indoor unit in the refrigeration system is over the limit or the number of connected remote controller is over the limit M NET remote controller is connected to MA remote controller cable The transmission line of the indoor outdoor unit is shorted or down M NET remote controller cable is shorted or down Transmission outdoor power board failure HO keeps being displayed or it is displayed period
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16. Abnormal point and detecting method Causes m From the previous page Check points 3 When the cause of displayed address and attribute is on the remote controller side The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the remote controller unit 4 When the cause of displayed address 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 5 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 OCH502 1 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 2 Contact failure of remote controller or indoor unit transmission line 3 Indoor unit transmission connector CN2M disconnection 4 Sending receiving signal circuit failure in the indoor unit or remote controller 1 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
17. The indoor unit and Slim model are connected to same group The fuse on the indoor unit controller board is blown Though the indoor unit operates the display of the remote controller goes out soon The power supply of the indoor unit Master is not on In case of connecting the system controller the setting of the system controller does not correspond to that of MA remote controller The fuse on the indoor unit Master controller board is blown is not displayed on the remote controller MA remote controller is not fed The remote controller is not fed until the power supply of both indoor unit and outdoor unit is on and the start up of both units is finished normally The power supply of the indoor unit is not on The power supply of the outdoor unit is not on The number of connected remote controller is over the limit Maximum 2 units or the number of connected indoor unit that is over the limit Maximum 16 units The address of the indoor unit is 00 and the address for the outdoor unit is the one other than 00 The transmission line of the indoor outdoor unit is connected to TB15 MA remote controller is connected to the transmission line of the indoor outdoor unit The remote controller cable is shorted or down The power supply cable or the transmission line is shorted or down The fuse on the indoor unit controller board is blown PLEASE WAIT keeps being dis
18. 13 4 5 14 23 32 41 50 59 68 FWB OUTDOOR OUTDOOR OCH502 14 P Figure 3 High heating performance curve 1 4 1 3 R f h CDB FDB atio of heating capacit 1 2 g capacity 15 59 1 1 1 0 21 1 70 0 9 25 77 0 8 27 2 81 0 7 INDOOR 0 6 0 5 0 4 Ratio of power 1 4 1 3 1 2 1 1 1 0 0 9 0 8 0 7 0 6 0 5 0 4 CDB FDB 15 59 21 1 70 25 77 27 2 81 INDOOR 25 20 15 10 5 0 5 10 15 20 CWB 13 4 5 14 23 32 41 50 59 68 IW OUTDOOR 4 4 2 Correcting capacity for changes in the length of refrigerant piping 1 During cooling obtain the ratio and the equivalent piping length of the outdoor units rated capacity and the total in use indoor capacity and find the capacity ratio corresponding to the standard piping length from Figure 3 Then multiply by the cooling capacity from Figure 1 to obtain the actual capacity 2 During heating find the equivalent piping length and find the capacity ratio corresponding to standard piping length from Figure 3 Then multiply by the heating capacity from Figure 2 to obtain the actual capacity Figure 3 Capacity correction curve 105 100 95 e 90 85 Capacity ratio 80 75 0 10 20 30 40 50 60 70 80 m 0 33 66 98 131 164 197 230 263 ft Corrected pipe length Method for obtaining t
19. r 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 Using 2 remote controllers for each indoor unit 3 Group operation The same as above OC The same as above Connect terminals 1 and 2 on transmission cable terminal block TB15 of each indoor unit which is doing group operation with the terminal block the MA remote controller Use non polarized 2 wire In the case of same group operation need to set the address that is only main indoor unit Please set the smallest address within number 01 50 of the indoor unit with the most functions in the same group Multiple indoor units operated together by 1 remote controller Combinations of 1 through 3 above are possible OCH502 25 Permissible Lengths Prohibited items Longest transmission cable length L1 L2 200m 656ft 1 25 mm AWG16 MA remote controller cable length 1 2 200m 656ft 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 th
20. 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 9 62 Check outdoor unit and repair defectives Check the inspected temperature of outside temperature thermistor on LED display 3 46 Check the connector 63H on outdoor controller board Check linear expansion valve 8 Replace outdoor controller board 9 Check the solenoid valve performance Check the high pressure sensor Check the high pressure sensor Superheat due to low discharge temperature Abnormal if discharge superheat is 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 OCH502 Disconnection or loose connection of discharge compressor temperature thermistor TH4 Defective holder of discharge temperature thermistor 33 C Check the installation conditions of discharge compressor temperature thermistor TH4 Display Abnormal point and detecting method Causes Check points 1501 Refrigerant shortage When the conditions of below detecting mode I or I are satisfied during the compressor operation lt Detecting mode I gt When the below conditions are satisfied completely 1 Compressor is operating
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22. eg S2 3 8 JI0 Ima f Calculate th 4 P06 d 6 35 1 4 20m 66 ft size and length of the extended The total length of each liquid line is as follows Calculate te additional refrigerant charge 9 52 3 8 A B C a 10m 10m 10m 15 45 m 33 ft 33 ft 33 ft 49 ft 148 ft using the procedure shown b the right ani 46 35 1 4 b c d 10 m 10 m 20 m 40 m 33 ft 33 ft 66 ft 132 ft charge with the additional refrigerant i The total capacity of connected indoor units is as follows For amounts less than 0 1 kg round up the 24 15 08 06 53 calculated additional refrigerant charge Therefore the additional refrigerant For example if the calculated charge is charge is as follows 45 m x 0 07 kg 40 m x 0 027 kg 2 5 kg 6 8 kg rounded up 32 92 kg round up the charge to 33 0 kg 147 ft x 0 047 Ibs 132 ft x 0 018 Ibs 5 5 Ibs 14 8 Ibs At the conditions below OCH502 Header Branch Method Connection Examples Connecting to 4 Indoor Units Y A Outdoor Unit First Branch Indoor unit Total Piping Length A a b c d 150m 492 ft Permissible E L Length Farthest Piping Length A d 80m 262 ft Farthest Piping Length After First Branch d is 30 meters 100 ft or less Permissible High 50 meters 1164 ft or less If the outdoor unit is lower 40 meters 131 ft or
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24. IC Sub 011650 This must be in sequence with the IC Main Use the smallest address of all the indoor units plus 50 Outdoor Unit 51 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 Setat 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 are done by the remote controller RC after the electri cal power has been turned on OCH502 27 n Name Symbol and the Maximum Units for Connection Longest length via outdoor unit M NET cable Li L2 L3 L4 and L1 L2 Le L7 500 m 1640ft 1 25 mm AWG16 or more Longest transmission cable length M NET cable Li and L3 L4 and Le and L2 Le and L7 200 m 656ft 1 25 mm AWG16 or more Remote controller cable length m1 and m1 m2 m3 and mi m2 m3 m4 200 m 656ft 0 3 to 1 25 mm AWG22 to AVVG161 Permissible Length TB15 2 I 112 Prohibite
25. Without centralized controller 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 runnin Auto change over from remote controller Enable Disable Before turning the power on Silent mode Demand control selsction see 8 6 Demand control Silent mode Can be set when off or during operation Initial settings ON OFF 123456 SW3 Test run ON OFF from outdoor unit ON OFF Mode setting Heating Cooling Always lt lnitial settings gt ON OFF 12 5 m o o s 5 SW4 Model select MODEL SELECT 1 ON 0 OFF SW4 SW8 MODELS 21314 112 60 11 0 0 0 Before the power is turned on Initial settings Set for each capacity SW5 Function switch 1 SW5 7 Refrigerant amount shortage measure during heating operation Change the indoor unit s LEV opening at start Normal Can be set when off or during operation Auxiliary heater ON OFF 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 op
26. is displayed OCH502 1 Connecting total models of the indoor unit exceed the specified level PUMY P60 code 56 2 There is a mistake in the registration of model name code of the outdoor unit 47 Check the total models of connected indoor unit Check the model code registration switch indoor controller board SW2 of connected indoor unit Check the model code registration Switch outdoor multi controller board SWA of the outdoor unit Abnormal point and detecting method Causes Check points Capacity code error When the connected indoor unit models cannot be connected lt 7101 gt is displayed The indoor unit models is not possible to connect The indoor unit of 15 140 Code 3 28 is possible to connect D Check the model code registration switch indoor controller board SW2 in the connected indoor unit The outdoor unit SW1 operation can check model code of the connected indoor units Code of indoor unit No 1 12345678 ON OFF No 2 12345678 ON No 3 ON OFF 12345678 No 5 No 6 5678 OFF 12345678 12345678 ON OFF No 7 ON OFF No 8 ON OFF 12345678 No 9 No 10 1234567 8 12345678 ON ON OFF OFF No 11 ON OFF No 12 ON 345678 1234567 The black square m indicates a switch position Number of connecting unit over When the connecting un
27. on power supply It normally recovers from the malfunction that happens by chance When same abnormality occurs again it is defective of the controller processor and transmission processor noise and lightening surge Note Address Attribute displayed on the remote controller shows the controller detecting abnormality 2 The address transmission from the unit processor was not normally transmitted by the hardware of transmission processor defective OCH502 43 Abnormal point and detecting method Causes Check points 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 30 seconds continuously Note Address Attribute displayed on the remote controller shows the controller which did not send back reply ACK 1 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 2 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 OCH502 Factor that does not relate to origin 1 Since the address svvitch vvas changed vvith the current passed the unit in the last addre
28. 2 Contact failure of fresh master or indoor unit transmission line 3 Indoor unit or fresh master transmission connector CN2M disconnection 4 Sending receiving signal circuit failure in the indoor unit or fresh master 1 When the lossnay power supply is off the indoor unit detects abnormality at signal transmitting to the lossnay 45 Continued to the next page Eee From the previous page Display Abnormal point and detecting method Causes Check points 6607 6 When the controller of displayed address and attribute is not recognized 2 When synchronized operating with other refrigerant system lossnay the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes and detects abnormality 3 Contact failure of lossnay or indoor unit transmission line 4 Indoor unit transmission connector CN2M disconnection 5 Sending receiving signal circuit failure in the indoor unit or lossnay 1 Since the address switch was changed with the current passed the unit in the last address does not exist 2 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 No response Though there was a replay ACK of having received signal from the other side it is
29. 5 46 C DB 23 115 F D I Guaranteed operation range heat Rating conditions Note 1 Cooling Indoor D B 26 7 C W B 19 4G D B 80 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 D B 8 3 C W B 6 1 C D B 47 F W B 43 F OCH502 20 15 C WB 4 60 F WB 40m 140ft In the case of installing outdoor unit lower than indoor unit 2 10 46 C 50 115 F DB In the case of connecting PKFY P06 P08 type indoor unit 3 Electrical data is for only outdoor unit In case of connecting 4 indoor units of PKFY POGNBMUx2 and PKFY P24NKMU x2 Btu h kW x 3 412 CFM m min x 35 31 bs kg 0 4536 Above specification data is subject to rounding variation 10 4 DATA 4 1 COOLING AND HEATING CAPACITY AND CHARACTERISTICS 4 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 4 2 STANDARD CAPACITY DIAGRAM 1 Capacity of indoor unit Model number for Model 06 Model 08 Model 12 Model 15 Model 18 Model 24 Model 27 Model 30 Model 36 Model 48 Model 54 Model 72 indoor unit Model Capacity 2 Sample calculation D Syst
30. See Photo 14 Note To recover refrigerants do not release refrigerants into the atmosphere OCH502 81 Photo 13 Im Valve bed fixing screws Valve bed A fixing screw Right side Front cover panel N fixing screws p Rear cover panel fixing screws Photo 14 Compressor MC Separator fixing screw Accumulator leg fixing screws Compressor fixing nut Photo 15 lll I Bex e MU 222 A usi e min J il c Wu Ill III A au nm res 2222 es Awun unn mmm mm Mi ex um mmm 1 0 Outlet Accumulator CH Y IL II MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2012 MITSUBISHI ELECTRIC CORPORATION Distributed in May 2013 No OCH502 REVISED EDITION B Distributed in Dec 2012 No OCH502 REVISED EDITION A Distributed in Sep 2012 No OCH502 Made in Japan New publication effective May 2013 Specifications are subject to change without notice
31. Set DIPSW5 4 when power is turned off at unit OFF Disable auxiliary Heating Function Initial setting ON Enable auxiliary Heating Function 9 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 c 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 e To set the fan airflow rate to be used during defrost operation insert the resistance that is packed within the optional adaptor cable kit PAC YU24HT F into the CN22 sensor input You can choose at what speed the indoor fan operates during defrost cycles bases on chart below Fan airflow rate setting CN22 input resistance 0 20k 27k 39k CN22 input cable color Low CN22 Input plug Setting on Fan speed setting Stopped remote Very Low controller Note The setting will be disabled when Heater contact signal is OFF OCH502 5 4 Determine fan airflow setting during indoor thermo OFF conditions a These settings are done within Indoor DIPSW1 7 and DIPSVV1 8 see chart below for options b Recommended SW1 7 OFF and SW1 8 ON will determine airflow based on
32. Stage 3 TH7 0 Auxiliary heating only Outdoor unit is OFF Stage 2 TH7 0 to 20 Auxiliary heating with outdoor unit in HP mode Stage 1 TH7 gt 20 Outdoor unit in HP mode only OCH502 6 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 ae Indoor unit Outdoor unit Remote control Board Relay circuit Adapter control board control board Dip switch SW5 4 ON Electric Heater power source Electric Heater Preparations in the field Maximum cable length is 10 m 32ft For relay X use the specifications given below operation coil Rated 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 to 1 25 mm AWG22 to AWG16 Do not extend the cable more than 10 meters 32ft Recommended circuit 88H FS1 H1 R O0 0 V 1 phase povver s o supply FS2 88H FS H2 208V 230V 60Hz R Sc oA s OO Ny FS1 2 Thermal fuse kA FS2 Wiring diagram H1 H2 Heater 26H 26H Overheat protection Control board thermostat 88H
33. m 3 4 18 V DC 6 5 16 V DC 7 5 16 V DC N2 CN52G CNDC Connect to the smoothing 52C driving signal 280 380 V DC capacitor CB Connect to the outdoor Connect to the outdoor controller circuit board controller circuit board CN52 CNDC E2 E3 Connect to the earth 1 CNAC2 LING U V W DCL1 DCL2 El E4 CNAC1 CNAC2 Connect to the compres Connect to the Connect to DCL Connect to 203 230 V AC Voltage of 208 230 V AC sor MC Voltage among smoothing capacitor the earth Connect to the out is input Connect to the phases 10 V 180 V AC CB door controller circuit terminal block TB1 board CNAC OCH502 59 Connect to the outdoor multi controller board Q 24 30V DC 24 30V DC CN2 3SYWYA m 100 Qd 1001Jg NO110ny2 F SP 8 380 D E s g 284 S 5 TE oz FE 2529 OoOo lt o no Eri o gt gt c22 9252 ran 60 OCH502 o z o 2 5 LL E 5 a gt o 10 8 Jequunu 1S AOJ y y m sseJppe eui U104j HE S IA HUN ON u 1 opoo Auge yun soopul Aejdsiqe SS2 0 Dun Joopul ON apoo Ayoedes 00011110 uun Joopul p ON apoo Ajoedes 00011101 uun Joopul ON epoo roedeg 00011100 uun Joopul Z ON epoo joede 000LL0LL Dun ON apoo Ajoede 00011010 po 146 440 oway uo
34. the remote controller shows the indoor unit which is cause of trouble 35 D 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 Q Q Check whether the indoor linear expansion valve leaks or not Abnormal point and detecting method Causes Check points Drain pump DP Q 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 O 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 lt 2502 gt will be displayed It takes 3 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 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 O above The indoor unit detecting above stops due to detecting abnormality the outd
35. 2184 SV 38 e RED YLW WHT WHT ageet 3IGRN 1 alt zm 1 3 WHT 2 1 cac 21 2 ya d 2 0 3 RED 155 29 9 1222 4 2 2 2 2154 SV1 M P B Jo 4 WHT TP1 BLK CN1 WD 1 77 2 2 1 3 Pere z P B d DEEN 2 4 7 T B RED CN4 CN2 da 2 WHT WHT wee ii RED M2 Ben P2 2 WHT CNDC TO INDOOR UNIT X CONNECTING WIRES da PNK oF DC 30V Non polar E TB7 BEDS Ju Fas 71M iw oan g kos s FOR CENTRALIZED CONTROL DC 30V Non polar t Wey tu 0012 0011 Ela m x x m zl 5 al d w U DCL 3 YYYN TE sgg MODEL SELECT 1 0 0FF x9e I L1 POWERSUPPLY I Y SW4 Ewe oN RE iz BU MODEL 1112181415161112 Ga LGRNYLW PUMY PEONKMUC BS 1011 11010101010 dera SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block Power Supply DCL Reactor SW7 Switch lt Function Selection gt TB3 Terminal Block lt Comunication Line gt CB Main Smoothing Capacitor Sw8 Switch lt Model Selection gt TB7 Terminal Block lt Centralized Control Line gt P B Power Circuit Board SWU1 Switch Unit Address Selection 1st digit gt MC Motor For Compressor TABU V W Connection Terminal lt U V W Phase gt SWU2 Switch lt Unit Address Selection 2nd digit gt MF1 MF2 Fan Motor TABLI NI Connection Terminal lt L N Phase gt ss Connector lt Connection For Option gt 21S4 Solenoid Valve lt Four Way Valve gt TABP2 Connection Terminal lt DC Voltage gt CN3D Connector lt Connection For Option gt 63H High Pressure
36. 6 Loosen clamps on top of the electrical parts box See 7 Toc lt Low pressure Photo 8 lt at Size temp gt Note TH6 and TH7 cannot be replaced individually as they share a connector To replace TH6 or TH7 remove both of the thermistors Photo 7 Lead wire of thermistor lt Outdoor gt TH7 lt Back view of outdoor unit gt Clamps TH7 lead wire Heat Electrical parts box exchanger lt Top view of outdoor unit with top panel removed gt OCH502 78 OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 5 Removing the thermistor lt Outdoor pipe gt TH3 and thermistor lt Compressor gt TH4 1 Remove the service panel See Photo 1 2 Disconnect the connectors TH3 white and TH4 white from the multi controller board in the electrical parts box See Photos 9 10 3 Pull out the thermistor lt Outdoor pipe gt TH3 and thermistor lt Compressor gt TH4 from the sensor holder Photo 9 Thermistor lt Compressor gt TH4 Compressor MO 6 Removing the 4 way valve coil 21S4 Remove the service panel and top panel See Photo 1 Remove 4 way valve solenoid coil fixing screw M4 x 6 1 2 3 Remove the 4 way valve coil by sliding the coil to the front 4 Disconnect the connector 21S4 green on the multi con troller board in the electrical parts box 7 Removing the 4 way valve 1 Remove the service panel and top panel See Photo 1 2
37. 9 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 9 1 OVERVIEW OF POWER WIRING 1 Use a separate power supply for the outdoor unit and indoor unit 2 Bear in mind ambient conditions ambient temperature direct sunlight rain water etc when proceeding with the wiring and connections 3 The wire size is the minimum value for metal conduit wiring The power cord size should be 1 rank thicker consideration of voltage drops Make sure the power supply voltage does not drop more than 10 4 Specific wiring requirements should adhere to the wiring regulations of the region 5 Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord For example use wiring such as YZW 6 Install an earth longer than other cables 7 Use copper supply wires Use electric wires over the rating voltage 300V A 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 A Caution Some installation site may require attachment
38. DC15V Same as CNF1 2 Vsp Voltage betvveen pins of CNF1 2 Voc TEST POINTO C515 and C516 Connect to fan motors Voltage between pins of C510 CNDC DCOV when stopped DC310V DC310V DC280 380V DC1 6 5V when operated DC15V Same as CNF1 2 O Same as CNF1 2 DC0 6 5V DC15V when stopped DC0 15V pulse when operated OCH502 58 On nm Outdoor power circuit board Brief check of POWER MODULE iz Usually each point is in a state of being short circuited if they are broken PUMY P60NKMU Measure the resistance in the following points connectors etc PUMY P60NKMU BS If they are short circuited it means that they are broken 1 Check of POWER MODULE Check of DIODE circuit L1 IP1 L2 IP1 L3 P1 1 1 L2 N1 L3 IN1 Check of IGBT circuit P2 U IP2 V P2 IW IN2 U N2 Vj IN2I Note The marks L1j L2 IL3 IN1 IN2 IP1 P2 U shown in the diagram are not actually printed on the board and W CN2 Connect to the outdoor controller circuit board CN2 CN4 1 5 Transmitting signal to outdoor controller circuit C board 0 5 V DC onnect to the outdoor controller circuit board CN4
39. L 0101 LLLLLOLO yelul LZH L 621 LLLLLOOL LLLLLOOO yElul LZHL 821 Do yElul LZHL ZO LELLOLLL yelul LZH L 921 LLLLOLLO O pinbi1 22 1 2121 LLLLOLOL O p nbr 22 1 1101 LLLLOLOO O pinbi1 22 1 0121 LLLLOOLL pinbr3 22 1 621 LLLLOOLO pinbiq 22 1 821 111 1 0001 nbr 22 1 Ol 1111 0000 o e o p o pinbiq 22 1 921 HOLL ZHL 2121 LLLOLLLO LLLOLLOL seo O 989 EZHL LLOI 989 62 1 0121 LLLOLLOO seo ZHL 601 LLLOLOLL LLLOLOLO O O 980 62 1 821 O SEP 62 1 ZOl LLLOLOOL O 989 62 1 921 111 01 000 A311 40opul s jnd Sulu do Aejdsiq sind Buiuedo A31 2101 LLLOOLLL esjnd Buiuedo A31 1121 LLLOOLLO s nd Buiuedo A31 0121 LLLOOLOL esjnd amp uiuedo A31 621 111 00100 esjnd Bulusdo A31 821 LLLOOOLL esjnd Buiuedo A31 221 LLLOOOLO esjnd Bulusdo A31 921 111 00001 HS OS 4oopul jo 05 0 6 666 6 66 HS 9S 2121 LLL00000 HS OS HOI 5 5 0191 LLOLELLO HS OS 691 LLOLLLOL HS OS 891 LLOLLLOO HS OS 291 LLOLLOLE HS OS 99 LLOLLOLO EA E E SE eyep ejdsip z 1447 eui uo 0510 e dsiq 8 9S8v 2 6umes LMS 68 OCH502
40. MS SSeJppyv MS SseJppyv MS Ss ppv NS SSeJppy MS SSeJppy 900 A 100 q 800 q 600 A 010 q h n Yunuoopu h n soopul h n soopul n n Joopu t A re 104 9S0 Weuefeueu p zllenu o 104 t t h n aoopino 09 10 SE 195 SI1 Jl a00 pu uuoo q Ajeoneuojne sseJppe au uous Suy001 ou seu ANNd 002 1017 48 04JU09 1 llonuoo 1 llonuoo 1 llonuoo 1 llonuoo 1 llonuoo SOL Joen YSI Joeu yol PLS Ed Sue 101 or 030 100 sun IOOBUI o 5 i S SS DPE 18S 2 uoopu pue 100pino 6 5 1lue19Bi i1 uoee 0 pejoeuuoo eq jsnui uoisSiusue1 v T ER L 3 PE NS SSeJppv SES ER KANI C MS SSeJppy Ow e 00 e s00 dz 00 Qc soo c 5 c yun Joopu yun Joopu yun Joopu yun emm L N UOISSIUSULI 4 llonuoo 104 jueujeDeueu peziejueo 104 150 E Wun Du 7 1 TRANSMISSION SYSTEM SETUP S 19 OCH502 Pn 7 2 REFRIGERANT SYSTEM DIAGRAM
41. Model 18 62 000 x lee 15 940 Btu h Model 18 68 000 x 57 17 440 Btu h 70000 78000 OCH502 11 MM 4 2 STANDARD OPERATION DATA REFERENCE DATA Operation Outdoor unit model PUMY P60NKMU BS Ambient Indoor DB WB 26 7 C 19 4 C 80 F 67 F 21 1 C 70 F temperature Outdoor 35 C 95 F 8 3 C 6 1 C 47 F 43 F No of connected units Unit 4 Indoor unit No of units in operation 4 Operating Model 06x2 24x2 conditions Main pipe 5 16 3 8 Piping Branch pipe m ft 2 5 8 1 4 Total pipe length 15 149 1 41 Fan speed Hi Amount of refrigerant kg 165 2 8 5 18 Electric current A 21 4 27 4 Outdoor unit Voltage V 230 Compressor frequency Hz 45 56 LEV opening Indoor unit Pulse 171 P06 426 P24 215 P06 534 P24 Pressure High pressure Lovv pressure MPa psi 2 83 0 94 1411 1361 2 93 0 66 1425 951 Discharge 74 1651 68 11541 Heat exchanger outlet 38 100 3 1371 Outdoor unit Accumulator inlet 13 551 0 32 a each Compressor inlet C F 14 57 1 30 Compressor shell bottom 74 165 68 154 indoor anil LEV inlet 27 81 40 104 Heat exchanger inlet 10 50 61 142 OCH502 12 4 3 STANDARD CAPACITY DIAGRAM PUMY P60NKMU BS PUMY P60NKMU
42. Outdoor temperature thermistor TH7 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 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 C 40 F or less OCH502 Connector TH7 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure 40 Check whether the connector TH7 in the multi controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC S2 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 on Belle When the temperature in multi controller board is not an actual temperature replace the multi controller board Abnormal point and detecting method Check points HIC piping temperature senso
43. Remove the electrical parts box See Photos 4 5 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 4 rear side 1 right side 5 x 12 on the back of the unit and then remove the right side panel 5 Remove the 4 way valve coil See Photo 10 6 Recover refrigerant 7 Remove the welded part of the 4 way valve Note 1 To recover refrigerants do not release refrigerants into the atmosphere Note 2 Remove the right side panel to remove the welded part easily Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it overheating 120 C 248 F or more then braze the pipes so that the inside of pipes are not oxidized OCH502 79 Photo 10 Thermistor i lt Low pressure r Low pressure saturated temp lt Tus p gt TH3 sensor 63LS Bypass valve coil fixing screw Bypass valve coil SV1 L2 Bypass valve SE High pressure switch 63H High pressure eg H sensor 63HS Le 4 way valve coil 4 way valve coil 2184 fixing screw 4 way valve OPERATING PROCEDURE PHOTOS 8 Removing bypass valve coil SV1 and bypass valve 1 Remove the service panel and the top panel See Photo 1 2 Remove the electrical parts box See Photos 4 5 3 Remove 5 right side panel fixing screws 4 rear side 1 right side 5 x 1
44. TO CHECK THE PARTS PUMY P60NKMU PUMY P60NKMU BS Parts name Check points Thermistor TH2 lt HIC gt Disconnect the connector then measure the resistance with a tester At the ambient temperature 10 C 30 C Thermistor TH3 lt Outdoor pipe gt Normal Abnormal Thermistor TH4 5 160kQ 410kQ Open or short TH3 p Thermistor TH6 TH6 lt Low pressure saturated temperature gt TH7 Thermistor TH7 lt Outdoor gt 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 21S4 Normal Abnormal 1580 1100 Open or short Motor for compressor Measure the resistance between the terminals with a tester MC U Winding temperature 20 C Normal Abnormal 0 37Q Open or short lenoid valv il Measure the resistance between the terminals with a tester SOU 194060 At the ambient temperature 20 C lt Bypass valve gt SV1 Normal Abnormal 1197 100 Open or short OCH502 55 w 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 t causes trouble of the outdoor controller c
45. and high pressure sensor defective in multi controller board Error detection of TH7 TH3 1 Thermistor defective 2 Thermistor input circuit defective in multi controller board Outdoor liquid gas valve is blocked Mulfunction of outdoor LEV LEV1 blockage Check the refrigerant amount Check the operation condition and refrigerant amount Check the ball valve is fully opened 1 Check the ball valve is fully opened 2 Check the resistance of discharge temperature thermistor 3 According to Outdoor unit functions set the SW2 and check the high pressure sensor level According to Outdoor unit functions check the discharge temp thermistor level When the high pressure sensor and discharge temp thermistor are normal if the above mentioned detecting pressure level and temp are very different from the actual pressure and temp replace the multi controller board 1 Check the resistance of thermistor 2 According to Outdoor unit functions check the outdoor pipe temp thermistor level 3 According to Outdoor unit functions check the outer temp thermistor level Check if the liquid gas valve is fully open Check if LEV1 works 4 way valve abnormality Abnormal if the 4 way valve does not operate during heating operation During heating operation When the below conditions are satisfied for 20 minutes or more Indoor liquid pipe thermisto
46. anything with TB15 of indoor unit IC Same as above Use the indoor unit IC address plus 150 as the sub remote controller address In this case it should be 152 3 or more remote con troller RC cannot be connected to 1 indoor unit Same as above oc 51 01 02 TBS TB7 TB5 15 TB5 15 MT M2 S MT M2 S MilM2 S 112 Mivds 112 The remote controller address is the indoor unit main address plus 100 In this case it should be 101 OCH502 22 B Example of a group operation system with 2 or more outdoor units and a M NET remote controller Address settings are necessary Examples of Transmission Cable Wiring System controller KS Shielded Wire Sub Remote Controller Wiring Method Address Settings Always
47. controller or remote controller malfunctions refer to 8 1 3 Countermeasures for Error During Run NOTE 2 During test run operation 2 hour off timer activates automatically and remaining time is on remote controller and test run stops 2 hours later NOTE 3 During test run the indoor liquid pipe temperature is displayed on remote controller instead of room temperature NOTE 4 Depending on a model This function is not available appears when air direction button is pressed However this is not malfunction OCH502 29 ss 8 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 2 buttons on the remote controller are pressed simul taneously and held for 2 seconds the display shown in Figure 1 will appear e Changing address Press
48. less than 0 1 kg round up the The total capacity of connected indoor units is as follows calculated additional refrigerant charge 24 15 08 06 06 59 For example if the calculated charge is Therefore the additional refrigerant 32 92 kg round up the charge to 33 0 kg charge is as follows 45 m x 0 07 kg 40 m x 0 027 kg 2 5 kg 6 8 kg rounded up 147 ft x 0 047 Ibs 132 ft x 0 018 Ibs 5 5 Ibs 14 8 Ibs Total capacity of Amount for the connected indoor indoor units units OCH502 74 pe 10 2 REFRIGERANT PIPE AIRTIGHT TESTING METHOD 1 Connect the testing tools Make sure the stop valves 9 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 O Pressurize to 1 5 MPa 15 kgf cm G wait 5 minutes and make sure the pressure does not decrease 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 C the pressure will change by about 0 01 MPa 0 1 kgf c
49. lt TH8 gt temperature by microprocessor amp Replace outdoor power circuit board Replace outdoor controller circuit board 1 Power module Check abnormality by driving power module in case overcurrent is detected Outdoor stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board Check compressor amp Replace outdoor power circuit board 2 Compressor overcurrent interruption Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds Over current level 29 0A Stop valve of outdoor unit is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of outdoor controller board Defective compressor D Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board Check indoor outdoor fan Solve short cycle amp Replace outdoor controller circuit board Check compressor Before the replacement of the outdoor controller circui
50. m 15 m 45 m 98 ft 49 ft 147 ft 26 35 b c d 10m 10 m 20 m 40 m 33 ft 33 ft 66 ft 132 ft The total capacity of connected indoor units is as follows 24 15 08 06 53 Therefore the additional refrigerant charge is as follows 45 m x 0 07 kg 40 m x 0 027 kg 2 5 kg 6 8 kg rounded up 147 ft x 0 047 lbs 132 ft x 0 018 Ibs 5 5 lbs 14 8 Ibs 15m 10m 10m 20m 49ft 33 ft 33 ft 66 ft At the conditions below Note The 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 A ae Method of Combined Branching of Lines and L gt Headers e A Connection Examples sl Connecting to 5 Indoor Units c d e B Outdoor unit B First branching branching joint Branching joint Indoor unit DE 1 Branching header E To downstream unit Blind caps Total Piping Length A B C a b c d e is 150 meters 492 ft or less Farthest Piping Length D 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 40 meters 131 ft or less Low Difference High Low Difference in Indoor Indoor Section il 15
51. 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 a malfunction of unit or fire 9 2 WIRE DIAMETER AND MAIN POWER SWITCH CAPACITY 9 2 1 Wiring diagram for main power supply Breaker for Wiring and Current Leakage Power supply Outdoor unit Single phase 60Hz 208 230V Grounded Breaker for Wiring Pull box and Current Leakage Power supply single phase 60Hz 208 230V Indoor unit Grounded 9 2 2 Power supply wire diameter and capacity Minimum Wire Thickness Breaker Minimum Maximum rating Power Supply mm AWG for Model Main Cable 2 Ground VViring 1 Breaker for Current circuit of over current Leakage ampacity protector device Outdoor Unit P60 N single 60Hz 208 230V 5 3 AWG10 5 3 AWG10 40A 30A30 mA 0 1 sec or less 35A 40A Indoor Unit N single 60Hz 208 230V Refer to installation manual of indoor unit 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 OCH502 69 a 9 3 DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI S se
52. of indoor R y p y unit and linked units are display displayed simultaneously A flashing 88 will appear if there is a problem with the entry indicating that the unit does not exist 3 M mm ERROR CODE OA UNIT ADDRESS NO ma INDOOR UNIT ADDRESS NO OCH502 30 n 2 Address check Refer to section 1 regarding address entry a In making group settings Turn off the remote controller Press the remote controller s ON OFF button to stop operation the indicator light will go off 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 1 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 S buttons on the remote controller simultaneously and hold for 2 seconds e Changing to the linked operation unit address displ
53. pressure es 3 sensor 63HS 4 way valve coil 4 way valve coil 4 way 21S4 fixing screw valve 11 Removing linear expansion valve LEV A LEV B 1 Remove the service panel and the top panel See Photo 1 2 Remove the electrical parts box See Photo 4 3 Remove 5 right side panel fixing screws 4 rear side 1 right side 5 x 12 and then remove the right side panel 4 Remove the linear expansion valve coil See Photo 12 5 Recover refrigerant 6 Remove the welded part of linear expansion valve Notes Photo 12 Linear expansion Linear expansion valve coil LEV B valve coil LEV A Linear expansion valve LEV A Linear expansion valve LEV B 1 To recover refrigerants do not release refrigerants into the atmosphere 2 Remove the right side panel to remove the welded part easily 3 When installing the refrigerant system parts cover them with a wet cloth to prevent them from heating 100 C or more high pressure switch and high low pressure sensor 120 C or more bypass valve coil bypass valve and linear expansion valve then braze the pipes so that the inside of pipes are not oxidized OCH502 80 OPERATING PROCEDURE PHOTOS 12 Removing the compressor MC 1 Remove the service panel and the top panel See Photo 1 2 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 4 3 Remove 4 rear cover panel fixing screws 5 x 12 a
54. 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 Detected that liquid pipe temperature room temperature 10deg 18 F for 30 minutes constantly 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 D is detected before it becomes an outdoor unit forced stop condition When indoor unit detects above condition outdoor unit in same refrigerant sytem stops Also indoor unit except for Fan or OFF mode unit stop 2502 is displayed on stopped unit amp Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop 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 and Q are detected independently OCH502 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 O and the indoor linear expansion valve full closed failure leakage happens synchronistically Note Address Attribute displayed on
55. 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 63H High pressure switch 2 High pressure High pressure sensor 63HS detect Abnormal if high pressure sensor detects 4 31MPa 625PSIG or more or over 4 15MPa 602PSIG for 3 minutes during the compressor operation Short cycle of indoor unit Clogged filter of indoor unit Decreased airflow caused by dirt of indoor fan Dirt of indoor heat exchanger Locked indoor fan motor Malfunction of indoor fan motor Defective operation of stop valve Not fully open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger 9 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 9 Defective outdoor controller board Defective action of linear expansion valve 9 Malfunction of fan driving circuit 9 Solenoid valve SV1 performance failure High pressure pressure cannot be controlled by SV1
56. 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 OCH502 1 Transmission repeats the failure by the noise etc 2 Decline of transmission voltage and signal by transmission line tolerance over The furthest point 200m 656ft Remote controller line 12m 39ft Refer to 8 3 3 Decline of transmission line voltage and signal by unmatched kind of line Shield wire CVVS CPEVS Wire diameter 1 25mm AWG16 or more 4 Mis operation of origin controller which happens by chance 46 D Check the transmission wave and noise on the transmission line Turn off power supply of outdoor unit indoor unit and lossnay for 2minutes or more at the same time Then turn on power supply again It normally recovers fom the malfunction that happens by chance When same abnormality occurs again it is defective of displayed address and attribute Display Abnormal point and detecting method Causes Check points 6831 6834 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 minute
57. 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 Check the resistance of thermistor if abnormality is not found in the method of the above mentioned from to O it is defective of the indoor controller board Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating Over current level 25 0A Stop valve is closed O Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power board OCH502 36 Open stop valve Check facility of power supply G Correct the wiring U V W phase to compressor Check compressor Replace outdoor power circuit board 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 nstantaneous decrease of DC bus voltage to 200V Increase of DC bus voltage to 400V Decrease o
58. type display location when an abnormality has occurred during clearing ae sone INDOOR UNIT ADDRESS NO JOA UNIT ADDRESS NO O OCH502 31 DEE 8 1 3 Countermeasures for Error During Test Run H a problem occurs during test run a code number will appear in the temperature display area on the remote controller or LED on the outdoor unit and the air conditioning system will automatically cease operating Determine the nature of the abnormality and apply corrective measures Check code Trouble Detected unit Indoor Outdoor Remote controller Remarks 0403 Serial transmission trouble Outdoor unit Multi controller board Power board communiation trouble 1102 Compressor temperature trouble Check delay code 1202 1302 High pressure trouble Check delay code 1402 1500 Excessive refrigerant replenishment Check delay code 1600 1501 Insufficient refrigerant trouble Check delay code 1601 Blocked valve in cooling mode Check delay code 1501 1505 Vacuum operation protection 1508 4 way valve trouble in heating mode Check delay code 1608 2500 Water leakage 2502 Drain pump trouble Drain sensor trouble THd Overcurrent trouble Overload compressor lock Check delay code 4350 Power synchronization signal trouble Check delay code 4165 Inverter trouble Check delay code 4320 Ov
59. unit terminal board TB7 for centralized controller or not 2 The transmission volume increases Check whether the transmission line EE and cannot be transmitted since the with the other refrigerant system of the th transmission line oy the noise nappens wiring method is mistaken and the indoor unit and lossnay is connected to routing technique to the terminal the outdoor unit terminal board TB3 Note Address Attribute displayed on the board TB3 for the transmission for transmission or not remote controller shows the controller line of 7 75 and the izgi detecting abnormality terminal board for centralize control cannot be transmitted 3 The share becomes high since the data Check whether the outdoor unit exists together to other transmitted terminal board for transmission line data by a defective repeater function TB3 and for centralized controller which connects and intercepts the TB7 are connected or not transmission of controlling system and centralized control system and it causes abnormal detection Check the transmitted wave and the noise on the transmission line Signal communication error with 5 1 The data of the unit transmission Turn off power supply of outdoor unit transmission processor processor was not normally transmitted indoor unit and lossnay for 2minutes Signal communication error between unit due to accidental disturbance such as or more at the same time Then turn
60. use shielded wire when making connections between the outdoor unit OC and the indoor unit IC as well for all OC OC and IC IC wiring intervals Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block TB3 of each outdoor unit OC to terminals M1 and M2 on the terminal S on the transmission cable block of the indoor unit IC Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit IC that has the most recent address within the same group to the terminal block on the remote controller RC Connect together terminals M1 M2 and terminal S on the terminal block for central control TB7 for the outdoor unit OC DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal 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 the IC Main in the same group of indoor units IC Sub Ge 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 wi
61. 11 Aypeuuouqe jo euin je HS OS SOI LLOOOLLO Aypeuuouqe Jo euin ye HS OS PO LLOOOLOL Aypeuuouqe jo euim ye HS OS 91 LL000100 ypeuuouqe jo euin 1e HS OS 221 LE00001L yupeuuouqe Jo euin ye HS OS LO 11 000010 Ayeuuouqe Jo euin je eyep 40SU S SHL 11 000001 Ayjeuuouqe Jo euim ye eyep 10sues CHL LL000000 Ayeuuouqe Jo euin je eyep 10sues 9gH 1 Aleuuouqe Jo euin 1e eyep 10sues LOLLLLLO eDeyoA 0199 UUOOSIp 1 PUT josu s 12 Ae 1043 LOLLLLOL Aypewusouge Jo aul ye gep SS Jo Aejdsiq 6 666 6 66 ypeuuouqe Jo euin ye Durooo 29 00 LOLLLLOO puuouqe Jo awy ye 1osu s inss id lu wo eyep Jo eydsiq 6 666 6 66 rewouqe jo eui ye eyep 10sues inss ld UDIH LOLLLOLL Ayyewuouge jo eun ye Jaquunu 0915 ugy jo eydsiq 91 0 Aypeuuouqe Jo oun je Jequunu dejs uey LOLLLOLO ypeuuouqe Jo eun ye Aouenbeu jenjoe jo ejdsiq 09 44 0 ASu nbau enjoy LOLLLOOL S ON 9 S t e NUNT eyep ejdsip H 1037 eui uo eldsiq e ds q 8L9GrECl Dunes LMS 67 OCH502 JO SIWU9U JOOPU uoeo WO EIER uol 58 p J Aeydsiq 6 666 6 66 O yelul LZH L 2121 LLLLLLOO O yelul LZHL LEOI LLLLLOLL O yelul LZH
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63. 2 and then 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 9 Removing the high pressure switch 63H 1 Remove the service panel and the top panel See Photo 1 2 Remove the electrical parts box See Photos 4 5 3 Remove 5 right side panel fixing screws 4 rear side 1 right side 5 x 12 and then remove the right side panel 4 Remove the lead wires of the high pressure switch 5 Recover refrigerant 6 Remove the welded parts of the high pressure switch 10 Removing the high pressure sensor 63HS and low pressure sensor 63LS 1 Remove the service panel and the top panel See Photo 1 2 Remove the electrical parts box See Photo 4 3 Remove 5 right side panel fixing screws 4 rear side 1 right side 5 x 12 and then remove the right side panel 4 Remove the lead wire of high pressure sensor 5 Recover refrigerant 6 Remove the welded part of high pressure sensor and low pressure sensor Photo 11 Thermistor Low pressure lt Low pressure saturated temp gt sensor 63LS TH6 1 Bypass valve coil fixing screw Bypass im amp coil SV1 Bypass valve High pressure svvitch 63H High
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65. Addresses must be set Address setting is not necessary 1 Itis 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 2 2 2 OCH502 HZ 2 3 UNIT SPECIFICATIONS 1 Method for identifying MULTI S model m Indoor unit lt When using Model 30 gt m Outdoor unit VVhen using model 60 gt P130 N BI MIUI E PU M Y P 60 IN IK M UJ BS die Qutdoor unit PAClIype R410A R22 Supnumber R410A M NET control L Ceiling cassette commonness MULTI S Outdoor unit K Wall mounted type model type E Hidden skylight type Frequency Frequency Power supply Salt proof C Ceiling suspended type Conversion UL model Colversion N Single phase type M Ceiling cassette type Controller control Controller 208 230V 60Hz F Floor standing type Unit model type l f Indicates equivalent NEW frequency converter to Cooling capacity one to many air conditioners flexible design type Power supply N Single phase Indicates equivalent 208 230V 60Hz to Cooling capacity 2 Operating temperature range Cooling Heating
66. CN41 Centralized control povver supply For storing jumper connector selection SW6 Function switch NO Do M N SW1 Display selection Self diagnosis CNS2 Transmission wire of centralized control CNS1 Indoor outdoor unit connecting wire SWU2 SWU1 Address setting CN2 Connect to the outdoor power circuit board Q 6 Power circuit board Transmitting signal to the multi controller board 2 CS een SES 8 SC mS E goi 5 JE CN3N Auto change over 0 5V DC Zero cross signal 63H 0 5V DC High pressure switch Not used fe 16V DC CN3D E 16V DC Input of demand control N 8 Power supply for multi controller board 208 230VAC CNAG RED TH2 Thermistor aN lt HIC pipe gt Q de TH4 Thermistor pr s Compressor LT oL T d i c o TH3 Thermistor ANE Outdoor pipe Y TH7 TH6 Thermistor lt Outdoor Saturation tempera ture of suction pressure gt 63LS Low pressure sensor 63HS gt High pressure sensor 162127 T6 3AL250V UL 6 3A 250V Joints e DIP Vre TEST POINT Voltage betvveen left pins of PC511 and PC512 pin1 and pin2 Same as CNF1 2 SEO ES Four way valve 2194 CNS04 GRN Vcc TEST POINT Voltage between pins of C82A
67. Check and take corrective action referring to the service manual Do not replace the outdoor board without checking NOTES 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 SVV1 and LED1 LED2 LED indication found on the multi controller of the outdoor unit LED indication Set all contacts of SW1 to OFF d 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 3 45 67 c De 1 2 Indication n sec 2154 svi sv Bg c c When fault requiring inspection has occurred The LED alternately indicates the inspection code and the location of the unit in which the fault has occurred OCH502 18 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION BS ON SIS BS N KES AN on XN or NN AGE laa KES eN Veo LTA ee 097 oe NS sseJppy NS SseJppv ZSL 2011 2 A A i KES ses 109
68. E 3 A MITSUBISHI ELECTRIC Indoor unit liquid pipe temperature indicator see NOTE 4 Display panel TEST RUN indicator CEST RUN CDONOFF ON OFF LED Lights up in operation Cooling Heating ON OFF button OPERATION zoon DIR O eem SWITCH button SONOS O AIR DIRECTION button e c cp Ooo TEST RUN button LOUVER button FAN SPEED button Control panel Operation procedure Tum 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 blows 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 V l l l l NOTE 1 If error code appears on remote
69. E 447 5 551 11 86 3 10 217 26 9 4 50 5 621 12 00 3 1 21 9 273 sp ses s 453 569 1244 3 18 22 0 276 56000 fi 22 1 27 9 57000 63000 22 2 28 2 58000 64100 22 3 28 4 59000 a 22 3 28 5 4 60 595 13 04 3 25 22 3 28 9 etl 60200 662001 461 5901 13 05 3 29 224 28 6 461 5 90 13 09 3 30 22 4 28 6 60600 66600 4 61 5 90 13 13 3 31 22 4 28 7 64 60800 66800 22 4 28 7 65 61000 67000 22 4 28 7 66 61200 67200 22 4 28 7 67 61400 aa b E d 22 4 28 7 68 61600 676001 4 62 5911 1334 3 85 224 28 7 l 61800 678001 462 5 91 1338 3361 203 2601 224 28 7 62000 680001 4462 5911 1342 3 37 22 4 28 7 0 E 4 62 5911 1347 3 38 224 28 7 62400 m 22 4 28 7 62600 68600 22 4 28 7 62800 68800 22 4 28 7 63000 a 22 4 28 7 EECH 22 4 28 7 z 63400 69400 452 5911 13 74 3 44 224 28 7 461 591 1378 345 22 4 28 7 OCH502 13 s 4 4 CORRECTING COOLING AND HEATING CAPACITY 4 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 e Standard conditions Indoor D B 26 776 W B 194 D B80F WB67F Rated cooling capacity Outdoor D B 35 C D B 95 F Balad heating leet DE 21 136 D B 70 F g capacily Outdoor D B 8 3 C W B 6 1 C D B 47 F W B 43 F U
70. EM Line Branch Method Connection Examples Connecting to 4 Indoor Units A Outdoor Unit First Branch Indoor unit Total Piping Length A B C a b c d 150m 492ft 0 Farthest Piping Length D A B C d 80m 262K Farthest Piping Length After First Branch B C d 30m 100ft Permissible High High Low Difference in Indoor Outdoor Section 50 meters 164ft or less If the outdoor unit is lower 40 meters 131ft or less Low Difference High Low Difference in Indoor Indoor Section h 15 meters 49ft or less m Selecting the Refrigerant Branch Kit Use an optional branch piping kit CMY Y62 G E 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 From Branch to Indoor Unit 1 Section From Oudoor Unit Outdoor Unit Piping Diameter Indoor Unit Piping Diameter to First Branch A Model Piping Diameter mm inch Model number Piping Diameter mm inch 2 Sections From Branch to Liquid Line 49 52 3 8 Liquid Line 66 35 1 4 Indoor Unit a b c d PUMY P60 GasLine 19 05 34J 49 ont Gas Line 12 7 1 2 3 Section From Branch to Liquid Line 69 52 3 8 Branch B C 24 1054 Gas Line g15 88 5 8 Select the size from the right table Liquid Line 29 52 3 8 3 Refrigerant Piping Diameter In Sec
71. ION CAUTIONS RELATED TO NEV REFRIGERANT Cautions for units utilizing refrigerant R410A Use nevv refrigerant pipes Avoid using thin pipes Use a vacuum pump with a reverse flow check valve rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness 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 Use the following tools specifically designed for use with R410A refrigerant Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Store the piping indoors 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 If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Handle tools with care The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small
72. Indoor side intake air temperature W B 15 24 C 59 75 F D B 15 27 C 59 81 F Outdoor side intake air temperature D B 5 46 C 23 115 F 1 W B 20 15 C 4 60 F Notes D B Dry Bulb Temperature W B Wet Bulb Temperature 1 10 46 C DB 50 115 FDB In the case of connecting PKFY P06 P08 type indoor unit m in the case of connecting fresh air type indoor unit Capacity of Fresh air type indoor Cooling Heating D B 21 43C 70 109 F 2 D B 10 20C 14 68 F 3 Indoor side and Outdoor side P30 W B 15 5 35 C 60 95 F intake air temperature D B 21 43 C 70 109 F 2 D B 5 20 23 68 F 3 W B 15 5 35C 60 95 F 2 Thermo off FAN mode automatically starts if the outdoor temp is lower than 21 C D B 70 FD B 3 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 OCH502 9 Item Service Ref 3 SPECIFICATIONS PUMY P60NKMU BS Cooling Capacity Btu h 60 000 Heating Capacity Btu h 66 000 Input Cool 3 kW 4 80 Input Current Cool 3 A 21 5 Power factor Cool 8 K 97 0 Input Heat 3 kW 6 15 Input Current Heat 3 A 27 6 Povver factor Heat 3 K 97 0 EER Cool 3 Btu h W 12 5 COP Heat 8 W W 3 14 Connect
73. MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS Changes for the Better HFC utilized R410A May 2013 No OCH502 REVISED EDITION B TECHNICAL amp SERVICE MANUAL Model name Service Ret lt Outdoor unit gt PUMY P60NKMU P U MY P60 N KM U PUMY PEONKMU BS D U MY P60 NKM U B S Please void OCH502 Revision Errors have been corrected in REVISED EDITION B Some descriptions have been modified REVISED EDITION A Note This service manual describes technical data of outdoor unit As for indoor units refer to its service manual CONTENTS 1 SAFETY PRECAUTION 2 2 OVERVIEW OF UNITS 5 DS 3 SPECIFICATIONS 10 l lin APDDATA onc ce eA 11 5 OUTLINES AND DIMENSIONS 17 6 WIRING DIAGRAM 18 7 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 19 8 TROUBLESHOOTING 29 9 ELECTRICAL WIRING 69 10 REFRIGERANT PIPING TASKS 72 11 DISASSEMBLY PROCEDURE 77 PARTS CATALOG OCB502 Model name indication CITY MULTI Intertek 3 1 SAFETY PRECAUT
74. 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 wring together OCH502 24 C Example of a MA remote controller system address setting is not necessary NOTE In the case of same group operation need to set the address that is only main indoor unit Example of wiring control cables Wiring Method and Address Setting 1 Standard operation a Use feed wiring to connect terminals M1 and M2 Li on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the transmis sion cable block TB5 of each indoor unit IC Use non polarized 2 wire 00 00 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 TB3 TB7 TB5 TB15 TB5 TB15 1 remote controller for each indoor unit 2 Operation using two remote controllers oc The same as above b The same as above c In the case of using 2 remote controllers connect terminals 1 and 2 on transmission cable terminal Tas 187 block TB15 for each indoor unit with the terminal kids hiluds
75. O 19AO Bueuoolnv 96d dul I NENO uoissiuued eBueuoolny 6d emie uonpeuuoo jeuieyx3 00 F00 LO L yo 1uBil uo 1467 ou ejop ulu eg us uoneyox3 oupyoeg ind JuevaBujay ON ISOu44q euo euuouqy 3 uonejedo 20 100100100 epow h n soopul Aejdsiq 34 ouueul NO ouueul B6une H 34 ouueul NO ouueul fullo02 uoneJedo 85 00L000LL uoneJedo 721100100010 uoneJ4edo COU 00100001 uonejedo zOI 00 100000 uone4edo Lo 000LLLLL S ON 9 S r eyep Aejdsip z 1447 eui uo Zeldsiq 8L9SVEC1 Ae dsiq T 62 OCH502 0 s p eldsip s Uu pejoeuuoo jou SI yun 100pu y ueuM 6 666 6 66 Oo 5689 ECHL 501 01010101 01010100 SPO ECHL EDI OLOLOOLL seo O S29 ZHL VOI seo seo 5290 ScH1 221 01010010 880 ZHL 121 01010001 1O S LM U uoee pue Josuas eunsseJd ufiu wor ejep uonoejep pue eyep 5S jooogns soopino Age 6 666 6 66 O 4 8H L 0100000 2 edid ioopino CHL 0100113110 O ZHL 01001101 gt 13 9H1 01001100 O PL PHL 01001011
76. Setting on the remote controller Auxiliary heating Fan speed Fan speed signal setting setting I memes or ON x Si Setting on remote OFF ON remote controller controller Baseboard Heating Stopped 5 Setting outdoor unit and auxiliary heat switch over temperatures When the DIPSW 5 4 is set to ON the outdoor unit and the contact output operates as shown below a Outdoor default setting and operations are shown below Stage 1 Outdoor unit HP operation Defrost Heater contact ON signal Other than defrost Contact OFF Amb decreasing aaz Amb increasing Heater contact ON signal Stage 2 AN Outdoor unit HP operation ee 1 id Heater contact ON signal Stage 3 A n A Outdoor unit OFF Standby a b C d TH7 Outdoor temperature 12 C 0 C 10 C 20 C 10 F 32 F 50 F 68 F When the set temperature ranges overlap the previously set pattern 1 2 or 3 has a priority The stage 1 has the highest priority 2 the second and then 3 b Based on above chart listed the sequence of operation on On ambient decrease Stage 1 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 12 Auxiliary heating only Outdoor unit is OFF c Based on above chart listed the sequence of operation on On ambient increase
77. Switch TABN2 Connection Terminal lt DC Voltage gt CN3S Connector lt Connection For Option gt 63HS High Pressure Sensor DCL1 DCL2 Connection Terminal lt Reactor gt CN3N Connector lt Connection For Option gt 63LS Low Pressure Sensor IGBT Power Module CN51 Connector Connection For Option SV1 Solenoid Valve lt Bypass Valve gt EI E2 E3 E4 Connection Terminal Ground LED1 LED2 LED Operation Inspection Display TH2 Thermistor HIC Pipe MULTI B Controller Circuit Board LED3 LED lt Power Supply to Main Microcomputer gt TH3 Thermistor lt Outdoor Pipe gt SW1 Switch lt Display Selection gt F1 F2 Fuse T6 3AL250V gt TH4 Thermistor lt Compressor gt sw2 Switch lt Function Selection gt X501 505 Relay TH6 Thermistor Low Pressure Saturated SW3 Switch lt Test Run gt M P B M NET Power Circuit Board TH7 Thermistor lt Outdoor gt SW4 Switch lt Model Selection gt TP1 ConnectionTerminal Ground TH8 Thermistor Heat Sink SW5 Switch lt Function Selection gt LEV A LEV B Electronic Expansion Valve SW6 Switch lt Function Selection gt Cautions when servicing NWARNING When the main supply is turned off the voltage 340 V in the main capacitor will drop to 20 V in approx 2 minutes input voltage 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
78. _1 Rt 15exp 3480 LL t 15expi3480 575 t 7 274 H t C F 32 1 8 10 0 C 32 F 150 30 C 86 F 4 3kO 10 C 50 F 9 6 0 40 C 104F 3 0kO a 0 20 C 68 F 6 3kQ 20 10 0 10 20 30 40 50 C 25 C 77 F 5 2kQ 4 14 32 50 68 86 104 122 F Temperature High temperature thermistor Se e Thermistor Compressor THAI Thermistor R120 7 465kQ 296 B constant 4057 2 o 1 1 Rt 7 465exp 4057 1 expi4057 57371 898 t C F 32 1 8 S 900 20 C 68 F 250kQ 70 C 158 34kOQ 30 C 86 F 160kQ 80 C 176F 24kO 40 C 104 F 104kO 90 C 194 F 17 5kQ 200 50 C 122 F 70kQ 100 C 2129F 13 0kO 60 C 140 F 48kQ 110 C 230 F 9 8 100 0 lt HIGH PRESSURE SENSOR gt 25 50 75 100 120 C 77 112 167 212 248 F 22 MULT EE CONTROLLER BOARD 25 o o z LI o 0 5 5V DO 25 5 PRESSURE Q Output Vout DC MPa lt LOW PRESSURE SENSOR gt Vout V MULTI CONTROLLER BOARD Vout WHT SENSOR 63LS 5V DC Q Output Vout DC OCH502 57 8 9 TEST POINT DIAGRAM Outdoor multi controller board PUMY P60NKMU PUMY P60NKMU BS lt CAUTION gt TEST POINT Q is high voltage SW8 SW2 SW3 SW7 SVV4 CN51 CN102 Model select Pump down Test run Forced defrost Model select External signal Connect to the M P B Transmission povver board CN40
79. able indoor units Max 12 Max Connectable Capacity Btu h 78 000 130 Power Supply Single phase 60Hz 208 230V Breaker Size 40A Max fuse size 42A Min Circuit Ampacity 25A Sound level Cool Heat 58 59 External finish Munsell 3Y 7 8 1 1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB66FFZMT Motor output 3 0 Capacity control Cooling 52 100 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 16 0 16 Airflow m min CFM 140 4 940 Dimensions HxWxD WwW mm in 1 050 41 5 16 D mm in 330430 13 1 3 16 H mm in 1 338 52 11 16 Weight kg Ibs 142 313 Refrigerant R410A Charge kg Ibs 5 1 11 2 Oil Model L oz 2 3 73 FV50S High pressure protection HP switch Compressor protection Compressor thermo Over current detection Fan motor protection Overheating Voltage protection Total Piping length Max m ft 150 492 Farthest m ft 80 262 Max Height difference m ft 50 164171 Chargeless length m ft 0 0 Pip diametr samimi 9 52 13 81 Gas gmmlinchl 19 05 3 4 cool
80. abnormality In this time lt 5101 gt is displayed Then if the thermistor recover in 3 minutes it operates normally Short Detected 90 C 194 F or more Open Detected 40 C 40 F or less Connector CN20 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Detecting circuit failure in the indoor controller board Check whether the connector CN20 in the indoor controller board is connected or not Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor OC 82 F 15kQ 10 C BO F 9 6kO 20 C 68 F 6 3kOQ 30 C B6 F 4 3kOQ 40 C 104 F 3 0kOQ When there is no problem in above mentioned DOG replace the indoor controller board Discharge Compressor temperature thermistor TH4 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 OC When controller detects short open in thermistor at just before of restarting the unit stops due to detecting abnormality In this time 5101 is displayed For 10 minutes after starting compressor for defrosting or for 3 minutes after recover of defrosting above mentioned short open are not detected Short 219 4 C 426 9 F or more Open 1 5 C 34 7 F or less Not
81. amount If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If large amount of mineral oil enters that can cause deterio 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 If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered Do not use refrigerant other than R410A Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released Use the specified refrigerant only If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc OCH502 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 vvith our products VVe vvill not be held responsible for mechanical failure system malfunction unit breakdovvn or accidents caused by failure to follovv the instructions 1 Cautions for service 1 Perform service after recovering the ref
82. at 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 mae mae DO INDOOR UNIT ADDRESS NO D I INDOOR UNIT ADDRESS NO will appear in the room temperature 88 will appear in the room temperature display location display location b In making paired settings Turn off the remote controller The procedure is same as b in 2 Address check Put into the indoor unit address display mode The procedure is same as b in 2 Address check Put into the linked unit address display mode The procedure is same as b in 2 Address check Display the address of the Lossnay unit or the indoor unit to be cleared e Deleting the address of a linked indoor unit Pressing the 8 8 8 button on the remote controller twice will clear the address entry of the displayed indoor unit resulting in the display shovvn 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 Lug og INDOOR UNIT ADDRESS NO will appear in the unit type display location when an address has been cleared normally OAUNIT ADDRESS NO O alternating display 88 will appear in the unit
83. ature in multi controller board is not an actual temperature replace the multi controller board 9 For 10 minutes after starting compressor Thermistor failure heating mode above mentioned short open are not detected Short 90 C 194 F or more Open 40 C 40 F or less Multi controller board input circuit failure Gas pipe temperature thermistor TH23 When the thermistor detects short open Check whether the connector CN29 Connector CN29 contact failure after 3 minutes 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 recover in 3 minutes it operates normally Short Detected 90 C 194 F or more Open Detected 40 C 40 F or less OCH502 O Thermistor wiring disconnection or half disconnection G Thermistor failure Detecting circuit failure in the indoor controller board 39 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 6kQ 20 C 68 F 6 3kQ 30 C 86 F 4 3kQ 40 C 104 F 3 0kO When there is no problem in above mentioned OG replace the indoor controller board
84. ay state Press the 2146 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 CDD Displaying the address of the linked Lossnay unit Press the button to display the addresses of the linked Lossnay and indoor unit in alternation Displaying the addresses of other entered units The addresses of the other entered units will be displayed in alternating 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 9 6 6 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 repe
85. d items 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 connected with the indoor unit of the same group wring together OCH502 28 8 TROUBLESHOOTING 8 1 CHECK POINTS FOR TEST RUN 8 1 1 Procedures of test run 1 Before a test run make sure that the 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 inspecti
86. d reception error No ACK error M NET Remote controller is detected Transmission and reception error No response error MA communication receive signal error no receive signal M NET Remote controller is detected MA Remote controller is detected MA commnication send signal error starting bit derection error MA Remote controller is detected MA commnication send error H W error MA Remote controller is detected MA commnication receive error Synchronous recovery error OD O O O O O o MA Remote controller is detected Total capacity error Capacity code error O OD O O OD OO OOO Connecting unit number error Address set error NOTE Remote controller sensor trouble When the outdoor unit detects No ACK error No response 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 Example When the compressor and SV1 are turned during cooling LED indication Set all contacts of SW1 to OFF operation During normal operation 1 23 45 67 8 The LED indicates the drive state of the controller in the outdoor unit r 1 fi CH Bit 1 07 r 1 Compressor LI LJ LJ LJ Indication o
87. ddress of all the indoor unit plus 50 Remote Indoor unit address plus controller RC 101 to 150 ioo 2 Operation using 2 remote controllers 51 TB3 TB7 a Same as above b Same as above c Set address switch on outdoor unit P C B as shown below Unit Range Setting Method Mi Mis Indoor Unit IC 001 to 050 Use the smallest 051 to 100 laddress of all the indoor units plus 50 Outdoor unit OC Using 2 remote controllers for each indoor unit Main Remote Controller RC Indoor unit address plus 101 to 150 100 Sub Remote Controller RC Indoor unit address plus 151 to 200 150 3 Group operation OC 51 02 TB3 TB7 T TB5 TB15 M Mis sl e R 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 addr
88. dimension A Usable by adjusting flaring dimension Bender Bend the pipes Tools for other refrigerants can be used Pipe cutter Cut the pipes Tools for other refrigerants can be used Welder and nitrogen gas cylinder Weld the pipes Tools for other refrigerants can be used Refrigerant charging scale Refrigerant charge Tools for other refrigerants can be used Vacuum gauge or thermis tor vacuum gauge and vacuum valve Check the degree of vacuum Vacuum valve prevents back flow of oil and refri gerant to thermistor vacuum gauge Tools for other refrigerants can be used Charging cylinder Refrigerant charge Tool exclusive for R410A 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 OCH502 4 2 OVERVIEW OF UNITS 2 1 Auxiliary HEATING ON OFF CONTROL SET UP 1 Auxiliary heating operation controls another heat source that depends on the main system s operations which means the interlock operation shown in b will be possible a Indoor unit must be R410A UL model for this function to operate b Different Indoor unit applications that can be applied PLFY PCFY PKFY PDFY x PEFY A T Electric Heating or Hot VVater Heating 2 Outdoor unit DIPSW5 4 for auxiliary heating control
89. e When outer temperature thermistor TH7 is 5 C 41 F or less on cooling open detecting is not determined as abnormality OCH502 Connector TH4 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure 38 Check whether the connector TH4 in the multi controller board is connected or not O Check whether the thermistor wiring is disconnected or not G Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 F about 700kQ 10 C BO F about 410kQ 20 C 68 F about 250kQ 30 C B6 F about 160kQ 40 C 104 F about 104kQ 12345678 Set the SW1 to When the temperature in multi controller board is not an actual temperature replace the multi controller board Display Causes Check points 5102 Abnormal point and detecting method Liquid pipe temperature thermistor TH22 D Check whether the connector CN21 in the indoor controller board is connected or not When the thermistor detects short open Connector CN21 contact failure 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 lt 5102 gt is displayed Then if the thermistor recovers in 3 mi
90. e diameter 1 4 6 35 1 4 3 8 9 52 1 2 12 70 3 8 Tools for R410A The following table shows whether conventional tools can be used or not Tools and materials Gauge manifold Charge hose Air purge refrigerant charge and operation check R410A tools Tool exclusive for R410A Can R22 tools be used Tool exclusive for R410A Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Refrigerant recovery Tool exclusive for R410A Refrigerant cylinder Refrigerant charge Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alkylbenzene oil minimum amount Ester oil ether oil O Alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Tool exclusive for R410A x Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x x Vacuum pump Vacuum drying and air purge Tools for other refrigerants can be used if equipped with adap ter for reverse flow check A Usable if equipped with adapter for rever se flow A Usable if equipped with adapter for rever se flow Flare tool Flaring work of piping Tools for other refrigerants can be used by adjusting flaring dimension A Usable by adjusting flaring
91. e 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 5110 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 170 C 338 F or more Open 35 C 31 F or less Connector TH8 contact failure Q Thermistor wiring disconnection or half disconnection G Thermistor failure Power board input circuit failure Check whether the connector TH8 in the power circuit board Check whether the thermistor wiring is disconnected or not Check the resistance of thermistor When the resistance is not below value replace the thermistor OC 32 F 180kO 10 C 50 F 105kQ 20 C 68 F 63kQ 30 C 86 F 39kQ 40 C 104 F 25kQ 12345678 Set the SW1 to 0 u iq When the temperature in multi controller board is not an actual temperature replace the power board High pressure sensor 63HS When 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 compr
92. e same group 112 Longest transmission cable length The same as above MA remote controller cable length 23 04 05 06 S 200m 656ft 0 3 1 25 mm AWG22 to AWG16 3 MA remote controller or more cannot be connected with the indoor unit of the same group Longest transmission cable length The same as above MA remote controller cable length 7 8 200m 656ft 0 3 1 25 mm AWG22 to AWG16 OCH502 26 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 a MA remote controller Address settings are necessary Examples of Transmission Cable Wiring IC 07 TB5 TB15 5 TB15 ial vas 22
93. e stat heater optional part During heating operation only 1 Include when the heating operation is OFF 2 High heating performance mode Enable Normal Simultaneous heating and cooling with external heater Enable Normal Forced defrost Forced defrost Normal During compressor running in heating mode Initial settings OFF 123456 SW8 Model select Initial settings ON OFF 12 1 During heating operation and the ambient temperature is 4 C 39 F or below the freeze prevention heater is energized 2 During heating mode is OFF include Thermo OFF in cooling mode and the ambient temperature is 4 C 39 F or below the freeze prevention heater is energized OCH502 53 8 6 OUTDOOR UNIT INPUT OUTPUT CONNECTOR e State CN51 MEN 8 0 Distant control board Lamp power supply L 1 X Du 7 Relay circuit Procure locally 2 od X m i External output adapter PAC SA88HA E Max 10m i i i Yeu y smi CN51 Outdoor unit control board pol 4121 i sazi 3 L i i i il o i li We L1 Error display lamp D SN i i L2 Compressor o
94. e switch 63H High pressure sensor 63HS Low pressure sensor 6315 Electronic Expansion Valve CNLVA and CNLVB Solenoid valve coil Four way valve 2184 Solenoid valve coil Bypass valve SV1 OCH502 77 gt lt al Electrical parts box Electrical parts box fixing screvvs Terminal block TB3 TB7 Terminal block TB1 Compressor MC Terminal cover Front cover panel OPERATING PROCEDURE PHOTOS amp ILLUSTRATION Photo 5 Electrical parts box 5 Remove the terminal cover and disconnect the compres sor lead wire 6 Remove the thermistor TH7 from the sensor holder x 7 Remove electrical parts box fixing screws 4 x 10 and Electrical parts remove the electrical parts box by lifting it The electrical ct box fixing screws parts box is fixed with 2 hooks on the left and 1 hook on I the right See Photo 5 4 Removing the thermistors lt Low pressure saturated Photo 6 temp gt TH6 and lt Outdoor gt TH7 Remove 1 Remove the top panel and the service panel See Photo 1 2 Disconnect the connector that TH6 and TH7 share on the multi controller board in the electrical parts box 3 Remove the thermistor lt Low pressure saturated temp gt TH6 from the sensor holder See Photo 6 4 Unfasten clamps to remove the TH6 lead wire 5 Remove the thermistor lt Outdoor gt TH7 from the sensor holder See Photo 7 Ce al Thermistor
95. e technical manual of each indoor unit 1 power consumption of outdoor unit Standard capacity table Refer to 5 2 Total povver consumption of system See the technical manual of each indoor unit kW 1 Please note that the power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units 2 Method of obtaining total current Page numbers in this technical manual Subtotal Total current through each indoor unit See the technical manual of each indoor unit 2 current through outdoor unit Standard capacity table Refer to 5 2 Total current through system See the technical manual of each indoor unit 0 0 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 in 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 9 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 OCH502 71 10 REFRIGERANT PIPING TASKS 10 1 REFRIGERANT PIPING SYST
96. em assembled from indoor and outdoor unit in this example the total capacity of the indoor units is greater than that of the outdoor unit Outdoor unit PUMY P60NKMU e Indoor unit PKFY POSNAMU E x 2 PLFY P18NBMU E x 3 According to the conditions in the total capacity of the indoor unit will be 8 x 2 18 x 3 70 The following figures are obtained from the 52 total capacity row of the standard capacity table 4 2 Capacity Btu h Outdoor unit power consumption KW Outdoor unit current A 230V Cooling Heating Cooling Heating Cooling Heating 9 62 000 68 000 4 62 5 91 20 3 26 0 4 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 or 8 x 2 Sample calculation using the system described above in 4 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 3 70000Btu h 9000 x 2 20000 x 3 78000 Btu h Therefore the capacity of PKFY POSNAMU E and Therefore the capacity of PKFY POSNAMU E and PLFY P18NBMU E will be calculated as follows by PLFY P18NBMU E will be calculated as follows by using the formula in 4 1 2 1 using the formula in 4 1 2 1 8000 9000 Model 08 62 000 x 70000 7 7 090 Btu h Model 08 68 000 x 78000 7 850 Btu h
97. eration 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 Refrigerant piping is long etc 2 SW5 8 Countermeasure against room temperature rise for indoor unit in FAN COOL and thermo OFF heating mode OCH502 Active 52 Inactive Can be set when off or during operation lt lnitial settings gt ON OFF 12345678 EEE The black square m indicates a switch position Function Operation in Each Switch Setting OFF When to Set Remarks SW6 Function switch c 5 o o g gt Switch of current limitation reading in a different way Enable Normal Before turning the power on Change of defrosting control Enable For high humidity Normal Ignore refrigerant filling abnormality Enable Normal Switching the target discharge pressure Pdm Enable Normal Switching 1 the target evaporation temperature ETm Enable Normal Switching 2 the target evaporation temperature ETm Enable Normal Can be set when off or during operation lt lnitial settings gt m OFF 1234567 8 SW7 Function switch Ignore current sensor abnormality Enable Normal After turning the power on Setting to energize the freez
98. erheat protection of radiator panel Check delay code 4330 Power module trouble or Overcurrent trouble Check delay code 4350 Fan controller trouble Outdoor Air inlet sensor trouble TH21 or Check delay code 4500 Compressor temperature sensor trouble TH4 Check delay code 1202 Liquid pipe temp sensor trouble TH22 or Low pressure saturated temp sensor trouble TH6 Check delay code 1211 Gas pipe temperature sensor trouble TH23 Piping temperature sensor trouble TH3 Check delay code 1205 Outdoor temperature sensor trouble TH7 Check delay code 1221 HIC piping temperature sensor trouble TH2 Check delay code 1222 Heatsink temperature sensor trouble TH8 Check delay code 1214 High pressure sensor trouble 63HS Check delay code 1402 Low pressure sensor trouble 63LS Check delay code 1400 Curnent sensor trouble Check delay code 4310 Contact failure of drain float switch Duplicated unit address setting y M NET Remote controller is detected Transmission error Transmission processor hardware error y M NET Remote controller is detected Transmission error Transmission route BUSY M NET Remote controller is detected Transmission and reception error Communication trouble with transmission processor O O OOOOOOO O O OOOJOOQO O OJOOIOOJOOQ O M NET Remote controller is detected Transmission an
99. ess other than that of the IC Main from among the units IC Sub 001 to 050 within the same group of indoor units This must be in sequence with the IC Main Use the smallest address of all the Outdoor Unit 051 to 100 indoor units plus 50 Main Remote Set at an IC Main address within Controller 101 to 150 the same group plus 100 Sub Remote Set at an IC Main address within Controller 151 to 200 the same group plus 150 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 OCH502 21 e Name Symbol and the Maximum Remote controller Units for Connection Name Maximum units for connection Outdoor unit ndoor unit 1 OC unit can be connected to 1 12 IC units M omo Maximum 2 RC for 1 indoor unit Maximum 12 RC for 1 OC Permissible Lengths Prohibited items Longest transmission cable length 1 25 mm AWG16 L1 L Le L3 L3 L1 200m 656ft Remote controller cable length 1 If 0 5 to 1 25 mm AWG20 to AWG16 1 2 S10m 33ft 2 If the length exceeds 10 meters 33ft 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
100. essor stops due to detecting abnormality In this time lt 5201 gt is displayed For 3 minutes after starting compressor for defrosting or for 3 minutes after recover of defrosting abnormality is not determined as abnormality OCH502 1 High pressure sensor failure 2 Internal pressure decrease by gas leakage 3 Connector contact failure disconnection 4 Multi controller board input circuit failure 41 Check the high pressure sensor Check the internal pressure Check the high pressure sensor Check the high pressure sensor Display Abnormal point and detecting method Causes Check points 5202 Low pressure sensor trouble 63LS When detected pressure in low pressure sensor is 0 23 MPa or less 2 3 MPa or more during the operation the compressor stops and restarts operation in 3 minutes When the detected pressure is 1 MPa or less at just before of restarting the compressor stops due to detecting abnormality In this time 5202 is displayed For 3 minutes after starting compressor for defrosting or for 3 minutes after recover of defrosting abnormality is not determined as abnormality 1 Low pressure sensor failure 2 Internal pressure decrease by gas leakage 3 Connector contact failure disconnection 4 Multi controller board input circuit failure D Check the low pressure sensor Check the internal pressure Check the low pr
101. essure sensor Check the low pressure sensor Connection failure of float switch connector Abnormal if detected that the float Switch connector is disconnected open during operation 1 Connection failure of connecor CN4F Check the connection failure of connector CN4F on the indoor controller board Current sensor error Abnormal if current sensor detects 1 5A to 1 5A during compressor operation This error is ignored in case of SW7 1 ON 1 Disconnection of compressor wiring 2 Defective circuit of current sensor on outdoor power circuit board Correct the wiring U V W phase to compressor Outdoor power circuit board Replace outdoor power circuit board Duplex address error Detected error when transmission of unit with the same address is confirmed Note Address Attribute displayed on the remote controller shows the controller detecting abnormality 1 There are 2 units or more with the same address among the outdoor unit or indoor unit or lossnay controller remote controller 2 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 tra
102. f 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 X52A Defective outdoor converter circuit board Disconnection or loose connection of CN5 on the outdoor power circuit board Disconnection or loose connection of CN2 on the outdoor power circuit board Check the facility of power supply Correct the wiring U V W phase to compressor Outdoor power circuit board Replace power board Replace outdoor converter circuit board Check CNS wiring on the outdoor power circuit board Check CN2 wiring on the outdoor power circuit board Temperature of heatsink Abnormal if heatsink thermistor TH8 detects 91 C 196 F NOTE TH8 is internal thermistor of power module on power board The outdoor fan motor is locked Q Failure of outdoor fan motor Airflow path is clogged Rise of ambient temperature Defective thermistor Defective input circuit of outdoor power circuit board Q 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 C 115 F Turn off power and on again to check if 4230 is displayed within 30 minutes Check thermistor
103. frigerant at the installation site In addition in order to carry out Service enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit m Calculation of additional refrigerant charge Calculate the additional charge using the liquid pipe size and length of the extended piping Calculate the additional refrigerant charge using the procedure shown to the right and charge with the additional refrigerant For amounts less than 0 1 kg round up the calculated additional refrigerant charge For example if the calculated charge is 32 92 kg round up the charge to 33 0 kg OCH502 Additional Charge Additional Liquid pipe size Liquid pipe size Total capacity of Amount for the refrigerant charge Total length of 49 52 x 0 07 kg 3 8 x 0 047 Ibs Total length of 6 35 x 0 027 kg 1 4 x 0 018 Ibs kg Ibs m x 0 07 kg m ft x 0 047 Ibs ft m x 0 027 kg m ft x 0 018 lbs ft connected indoor units indoor units P42 P43 P60 P61 2 0kg 4 4lbs 2 5kg 5 5lbs 3 0kg 6 6lbs lt Calculation example gt Outdoor model P60 ndoor 1 P24 A 69 52 3 8 30 m 98ft 2 P15 a 69 52 3 8 66 35 1 4 3 P08 c 66 35 1 4 4 P06 d 6 35 1 4 The total length of each liquid line is as follows 9 52 A a 30
104. h 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 or below Diagram below Piping diameter and thickness Outside diameter mm Nominal Thickness mm dimensions inch 1 4 3 8 1 2 5 8 3 4 Use 1 2H or H pipes 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 refrig erants Therefore to enhance airtightness and intensity flare 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 copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch the dimension B changes Use torque wrench corresponding to each dimension Dimension Y Flare cutting dimensions Nominal dimensions inch Outside diameter Nominal dimensions inch Outsid
105. h of the address which causes 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 G 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 for 2 minutes or more at the same time Then turn on power supply 2 When there is not any trouble in single refrigerant system 1 outdoor unit from above D G controller defective in displayed address and attribute When there is not any trouble in different refrigerant system 2 outdoor unit or more from above determine it after When the address which should not exist is an origin since there is the indoor unit which memorizes the address data cancel the unnecessary address data by the manual setting function of remote controller However they are limited to the system which sets the group between different refrigerant systems or which fresh master lossnay are connected When there is not any trouble from above 9 6 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 to the next page
106. he equivalent piping length Equivalent length for type P60 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 OCH502 15 4 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 20 APPROXIMATE THRESHOLD OF r HEARING FOR C CONTINUOUS NOISE Outdoor Intake temperature W B F 43 39 36 32 28 25 21 18 14 Outdoor 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 4 5 NOISE CRITERION CURVES PUMY P60NKMU MODE SPL dB LINE COOLING 58 PUMY P60NKMU BS Tou s 90 E s S 80 S U m 70 m MICROPHONE T eo 1m 3 3ft __ UNIT 4 E 50 2 D 1 5m 40 4 9ft a N o SS GROUND 2 m e MM RE 0 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCH502 16 OUTLINES AND DIMENSIONS h gt
107. he maximum concentration is Indoor unit expressed in units of kg m kg of R410A per m Maximum concentration of R410A 0 3kg m 10 019lbs ft KHK installation guidelines S0010 b There are partitions but there are openings that allow Outdoor unit the effective mixing of air Outdoor unit Direction of refrigerant flow 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 Indoor unit Opening All refrigerant of this system will leak out to this room if there is leakage at this indoor unit 10 3 2 Confirming procedure of R410A concentration c If the smallest room has mechanical ventilation Follow 1 to 3 to confirm the R410A concentration and take apparatus that is linked to a household gas detection appropriate treatment if necessary and alarm device the calculations should be performed for the second smallest room 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 Ventilation apparatus Note ndoor unit VVhen a single refrigeration system consists of several independent refrigeration circuit figure out the total refriger ant amount by adding each independent refrigerant circuit The smallest The second room smalles
108. he top panel See Photo 1 2 Remove 4 fan grille fixing screws 5 x 12 to remove MF1 upper or MF2 lower fan grille See Photo 1 3 Remove a nut right handed screw of M6 to remove a propeller fan See Photo 2 4 Disconnect the relevant connector CNF1 for MF1 or CNF2 for MF2 from the control board in the electrical parts box 5 Remove 4 fan motor fixing screws 5 x 20 and remove the fan motor together with the lead wire See Photo 3 Photo 2 Propeller fan Front panel Photo 3 Fan motor fixing screws motor Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel and top panel See Photo 1 2 Disconnect the indoor unit connecting lead wires and the power supply wires from the terminal blocks TB3 and TB1 on the multi controller board 4 Disconnect all the following connectors from the multi controller board fan motor thermistor lt Outdoor pipe gt thermistor HIC pipe thermistor Compressor thermistor lt Low pressure saturated temp gt thermistor lt Outdoor gt high pressure switch high pressure sensor low pressure sensor 4 way valve coil and bypass valve coil and electronic expansion valve lt Diagram symbo indicating connector housings gt Fan motor CNF1 CNF2 Thermistor HIC pipe TH2 Thermistor Outdoor pipe TH3 Thermistor Compressor TH4 e Thermistor lt Low pressure saturated temp Outdoor TH6 7 High pressur
109. ically HO 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 The remote controller does not operate though is displayed 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 2 For MA remote controller systems Symptom or inspection code Cause Check the part where the abnormality occurs The entire system In the entire refrigerant system In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant system Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only Check the items shown in the left that are related to the indoor unit 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
110. in HEAT mode 2 Discharge super heat is 80C 144 F or more 3 Difference of outer temperature thermistor TH7 and outdoor piping temp thermistor TH3 applies to the formula of TH7 TH3 lt 5C 9 F 4 High pressure sensor is below about 2 04MPa 296PSIG lt Detecting mode I gt When the below conditions are satisfied completely 1 Compressor is operating 2 When cooling discharge superheat is 80 C 144 F or more When heating discharge superheat is 90 C 162 F or more High pressure sensor is below about 2 32MPa 337PSIG Blocked stop valve Abnormal if the valve is blocked during cooling operation test run etc During cooling operation When the conditions below are satisfied for 20 minutes or more Indoor liquid pipe thermistor temp TH22j Indoor intake thermistor TH21j 2 C 28 4 F Indoor gas pipe thermistor temp TH23j Indoor intake thermistor TH21j 2 C 28 4 F For indoor unit the abnormality is detected if an operating unit satisfies the condition Gas leakage Gas shortage When heating operation refrigerant shortage feeling operation When heating airflow or thermo OFF are mixed operation it cause a refrigerant shortage operation Ball valve performance failure not fully opened Error detection of discharge super heat 1 High pressure sensor defective 2 Discharge temperature thermistor defective 3 Thermistor input circuit defective
111. included in the outdoor unit when the unit is refrigerant charge Total length of Total length of shipped from the factory 9 52 x 0 07 kg 6 35 x 0 027 kg Therefore charge each refrigerant piping P42 2 0kg 4 4lbs system with additional refrigerant at the kg m x 0 07 kg m m x 0 027 kg m P43 P60 2 5kg 5 5lbs installation site In addition in order to carry out bs x 0 047 Ibs ft ft x 0 018 Ibs ft P61 3 0kg 6 6lbs service enter the size and length of each liquid pipe and additional refrigerant charge amounts lt Calculation example gt in the spaces provided on the Refrigerant Outdoor model P60 amount plate on the outdoor unit Indoor P24 A 49 52 3 8 10 m 33 ft Z9 52 3 8 15m 49 ft m Calculation of additional refrigerant charge 2 P15 B 99 52 3 8 10 m 33 ft 6 35 1 4 10m 133 fil Atthe Calculate the additional charge using the 200 SE 1 4 10m 33 fil gt conditions liquid pipe size and length of the extended 205 96 35 141 10m 33 fil below qu P06 66 35 1 4 10m 33 ft piping l The total length of each liquid line is as follows Calculate the additional refrigerant charge g q using the procedure shown to the right 29 52 44 Ba C a 10m 10m 10ms 15 m 45 m 33 ft 33 ft 33 ft 49 ft 148 f charge with the additional refrigerant 26 335 b c d e 10m 10m 10m 10m 40 m 33 ft 33 ft 33 ft 33 ft 132 ft For amounts
112. inks System is being driven Operate remote controller again after HO or PLEASE WAIT disappears Drain pump does not stop vvhile 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 vvhile unit has been stopped Unit continues to operate drain pump if drainage is generated even during a stop The compressor that is running soon after powered on is slow to speed up OCH502 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 51 s 8 5 INTERNAL SWITCH FUNCTION TABLE PUMY P60NKMU PUMY P60NKMU BS Switch The black square m indicates a switch position Operation in each switch setting Function ON OFF When to set Remarks SWU1 1s digit SWU2 10ths digit Rotary switch 10ths digit 1s digit Before turning the power on lt lnitial settings gt a BOR SWU2 SWU1 10ths digit 1s digit SW1 Digital display switch ON OFF 12345 678 Can be set either during operation or not Initial settings ON OFF 12345678 SW2 Function switch Selects operating system startup With centralized controller
113. ircuit board and fan motor Self check Symptom The outdoor fan cannot turn around Fuse check Check the fuse F500 on outdoor multi controller board gt Yes gt Replace outdoor controller board MULTI B x i Did the fuse blow and fan motor MF1 2 V No Wiring contact check Contact of fan motor connector CNF1 2 v s there contact failure gt Yes gt a No Power supply check Remove 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 DC310 340V TEST POINT O Vcc between 5 and 4 of the fan connector Vcc DC15V v Is the voltage normal Yes gt a Replace the fan motor p V No V Yes OK Check the operation of fan END Replace outdoor controller board Y NG OK C Replace outdoor controller board D Check the operation END y NG d Replace the fan motor 56 OCH502 8 8 HOW TO CHECK THE COMPONENTS lt Thermistor feature chart gt Low temperature thermistors Thermistor HIC pipe TH2 Thermistor Outdoor pipe TH3 Thermistor Low pressure saturated temperature TH6 Thermistor Outdoor TH7 50 Q BR o Thermistor RO 15kQ 3 B constant 3480 296 N Resistance k 1
114. it exceeds a number of limitations error code 7102 is displayed Even if the indoor unit is not connected 7102 is displayed Connecting unit exceeds a number of limitations It is assumed abnormal excluding the following cases 1 The indoor unit can be totally connected up to 12 units 2 Ventilation unit connecting is only 1 unit Check whether the connecting unit exceeds a number of limitations or not Address setting error Address setting of the outdoor unit is wrong Addresses mis 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 2 minutes 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 network remote controller during the operation When an old type remote controller for M NET is used and the remote controller sensor is specified SW1 1 is ON Replace the remote controller to net work remote controller Serial communication error Abnormal if serial communication between outdoor multi board and outdoor power board is defective OCH502 Breaking of wire or contact failure of connec
115. ity When turning to cooling operation or dry operation Detected that liquid pipe temperature room temperature S 10deg 18 F Defective drain Clogged drain pump Clogged drain pipe Adverse flow of drain in other units O Defective moving part of float switch Foreign matter on the moving part of float switch ex sludge etc Defective float switch 6min 1 1 6 min Drainpump ON OFF Float switch ON OFF In the water In the air Water leakage suspensive abnormality T 1 15 sec n the vvater n the air Check the drain function Check moving part of float switch Check the value of resistance with the float switch ON OFF Operation mode When drain pump turns on as float switch detects to be in the water except during cooling dry mode In the water Water leakage abnormality l an Within 1 hour gt Within 1 hour 1 Drain pump Let drain sensor self heated and if temperature rises slightly as suspensive abnormality operation stops and changes to protect mode of restarting in 3 minutes Drain pump is abnormal if the condition above is detected during suspensive abnormality lt 2502 gt is displayed Malfunction of drain pipe is constantly detected during drain pump operation The unit enters to forced outdoor unit stop when following conditions a and b are
116. l 12 1 VO 0101110 Oo Jonn LcH L EO 0101101 Oo Jonn H1 221 0101100 J t yelul LEHL 191 010LLOLL 0101010 0101100 O pnb 22 1 91 01011000 p O pnb 22 1 vol p p O pinbr1 22 1 221 01010LLL yelul yelul yelul yelul 9 pinbr1 22 1 521 pinbr1 pinbr1 pinbr1 pinbr1 O pnb 22 1 LOI OLOLOLLO S l0N 2 116 ENEXES erep fejdsip z 1441 eui uo fejdsiq apow e dsiq 8 9 7 21 Bugs LMS 64 OCH502 Jeep Ajreuuouqe jo euin ye Jequunu 0915 uey jo eydsiq SL 0 Jeep Ajreuuouqe jo euin ye saquinu days uey 10001101 Aejap Ayyewuouge Jo eui ye Aouanbyy penpe Jo eydsiq 9 91 44 0 Key p Aou nbaJj yenjoy 10001100 ejep Ayreuuouqe Jo eum ye A31 Joopur jo sind Buiuedo jo Aejdsiq Aejap Ayjeuuouge sind Buiuedo A31 2101 10001011 sind Duiuedo A31 LLAI 10001010 Aejap Ayyewuouge sind Buiuedo A31 0121 10001001 Aejap Ayyewuouge sind 6uiuedo A31 621 10001000 Aejap Aypeuuouge sind 6uiuedo A31 921 K0000LLL Aejap Aupeuuouge sind 6uiuedo A31 0 10000110 Aejap Aupeuuouge oemd 6uiuedo A31 921 10000101 Key p Aupeuuouge s nd 6uiuedo A31 501 10000100 Aejap Aupeuuougqe sind 6uiuedo A31 VII 10000011 Aejap
117. less Low Difference High Low Difference in Indoor Outdoor Section H High Low Difference in Indoor Indoor Section h 15 meters 49 ft or less W Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Branch header 4 branches CMY Y64 G E Branch header 8 branches CMY Y68 G E m Select Each Section of Refrigerant Piping 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d Select the size from the right table 1 Refrigerant Piping Diameter In Section From Outdoor Unit to First Branch Out door Unit Piping Diameter Model Piping Diameter mm inch PUMY P60 Liquid Line 9 52 3 8 Gas Line 19 05 3 4 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Indoor Unit Piping Diameter Model number Piping Diameter mm inch Liquid Line 56 35 1 4 Gas Line 412 7 1 2 Liquid Line 49 52 3 8 Gas Line 15 88 5 8 Liquid Line 49 52 3 8 Gas Line 19 05 3 4 18 or lower 24 to 54 72 m Additional refrigerant charge Refrigerant for the extended piping is not included in the outdoor unit when the unit is shipped from the factory Therefore charge each refrigerant piping System with additional re
118. m 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 Q Stop valve lt Liquid side gt Stop 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 OCH502 75 10 3 PRECAUTIONS AGAINST REFRIGERANT LEAKAGE The installer and system specialist shall secure safety against leakage according to local regulations or standards The following standards may be applicable if local regulations are not available 10 3 1 Introduction 2 Calculate room volumes m ift and find the room R410A refrigerant of this air conditioner is non toxic and non vvith the smallest volume flammable but leaking of large amount from an indoor unit The part with 7 represents the room with the smallest into the room where the unit is installed may be deleterious volume To prevent possible injury the rooms should be large a Situation in which there are no partitions enough to keep the R410A concentration specified by KHK a high pressure gas safety association installation guidelines S0010 as follows Outdoor unit Maximum concentration Maximum refrigerant concentration of R410A of a room is 0 30 kg m accordance with the installation guidelines To facilitate calculation t
119. meters 49 ft or less m Selecting the Refrigerant Branch Kit Please select branching kit which is sold separately from the table below The kit comprises sets for use with liquid pipes and for use with gas pipes Permissible Length Branch Joint Branch Header 4 branches Branch Header 8 branches CMY Y62 G E CMY Y64 G E CMY Y68 G E m 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 Liquid Line 49 52 3 8 ie Silwer Liquid Line 26 35 1 4 PUMY P60 75 Gas Line 419 05 3 4 Gas Line 412 7 1 2 ection rrom branch to Liquid Line 49 52 3 8 Branch B C 2410 54 F Gas Line 415 88 5 8 Liquid Line 49 52 3 8 Gas Line 19 05 3 4 Select the size from the right table 3 Refrigerant Piping Diameter In Section 72 From Branch to Branch Liquid Line mm inch Gas Line mm inch 49 52 3 8 19 05 3 4 m Additional refrigerant charge Additional Charge Refrigerant for the extended piping is not Additional Liquid pipe size Liquid pipe size
120. nd remove the rear cover panel 4 Remove the electrical parts box See Photos 4 5 5 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 6 Remove 3 right side panel fixing screws 5 x 12 on the back of the unit and then remove the right side panel 7 Remove the front panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Recover refrigerant 10 Remove the 3 compressor fixing nuts using a spanner or a monkey wrench 11 Remove the welded parts of the inlet and outlet pipes from the compressor Note To recover refrigerants do not release refrigerants into the atmosphere 13 Removing the accumulator 1 Remove the service panel and the top panel See Photo 1 2 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 13 3 Remove 4 rear cover panel fixing screws 5 x 12 and remove the rear cover panel See Photo 12 4 Remove the electrical parts box See Photos 4 5 5 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 See Photo 13 6 Remove 3 right side panel fixing screws 5 x 12 on the back of the unit and then remove the right side panel 7 Recover refrigerant 8 Remove 2 welded pipes of accumulator inlet and outlet 9 Remove 2 receiver leg fixing screws 4 x 10
121. ng 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 continued for 1 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 lovv 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 L n 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 D Ultra low speed operation for 5 minutes after SW ON or until piping temperature becomes 35C There lovv speed operate for 2 minutes and then set notch is commenced Hot adiust control ndoor unit remote controller shovvs HO or PLEASE VVA T indicator for about two minutes when turning ON power supply HO blinks PLEASE WAIT bl
122. nsmission line Transmission processor H W error 1 shows on the transmission line though the transmission processor transmitted 0 Note Address Attribute displayed on the remote controller shows the controller detecting abnormality OCH502 1 When the wiring for either of the indoor unit the outdoor unit or lossnay transmission line is constructed or polarity is changed with the power supply turned on the transmission waves change in case that the transmission data collides mutually It causes to detect error 2 Transmission processor circuit failure 3 When the transmission data has changed by the noise When the transmission wire 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 42 Display Abnormal point and detecting method Causes Check points 6603 Transmission bus busy error Over error by collision 1 The transmission processor cannot O Check whether the transmission line of Abnormality when the state which cannot be transmitted since a short cycle the indoor unit fresh master lossnay be transmitted by collision of transmission voltage of the noise etc mixes on and remote controller is connected to is consecutive for 8 to 10minutes the transmission line consecutively the outdoor
123. nutes it operates normally Check whether the thermistor wiring is disconnected or not Thermistor wiring disconnection or half disconnection Check the resistance of thermistor OC 32 F 15kQ 10 C 50 F 9 6kQ 20 C 68 F 6 3kQ 30 C 86 F 4 3kQ 40 C 104 F 3 0kO When there is no problem in above mentioned DOG replace the indoor controller board Thermistor failure Short Detected 90 C 194 F or more Open Detected 40 C 40 F or less Detecting circuit failure in the indoor controller board Low pressure saturation temperature thermistor TH6 D 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 Check whether the connector TH6 in the multi controller board is connected or not Connector TH6 contact failure Check whether the thermistor wiring is disconnected or not Thermistor wiring disconnection or half disconnection 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 Check the resistance of thermistor O C 82 F 15kQ 10 C BO F 9 6kO 20 C 68 F 6 3kO 30 C 86 F 4 3kQ 40 C 104 F 3 0kQ 12345678 Set the SW1 to ia LN When the temper
124. oller must be set using their settings switches Please consult the installation manual that comes with each unit for detailed information on setting procedures 9 5 EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM 9 5 1 Example using a M NET remote controller Breaker for Wiring and Current Leakage Power supply Outdoor Single phase 2 wire unit 60Hz 208 230V Grounded 15A Breaker for Wiring ee mr 2 and Current Leakage Power supply I Single pha 1 60H z 208 230V 1 25mm x 2 g di mm 2 IAWQG16 EH AWG14 p1 6mm x 2 Co AWG14 S Indoor unit 0 5 1 25mm x 2 gt Group operation AWG20 AWG16 7 Remote controller wire OCH502 70 HEZZ 9 6 METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS VVHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POVVER 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 follovving formulas to calculate the electrical char acteristics before applying for a capacity agreement with the local electric power company 9 6 1 Obtaining the electrical characteristics of a CITY MULTI S series system 1 Procedure for obtaining total povver consumption Total power consumption of each indoor unit See th
125. on if the resistance is 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 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 8 1 2 Special Function Operation and Settings for M NET Remote Controller as for settings In MA remote controller s this registration is unnecessary 4 More than 12 hours later from power supply to the outdoor unit turn all power switch to on for the 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 the 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 8 1 3 Countermeasures for Error During Test Run As for DIP switch setting of outdoor unit refer to 8 5 INTERNAL SWITCH FUNCTION TABLE M NET Remote controller Check code indicator see NOTE 1 Test run remaining time indicator see NOT
126. oor 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 D and are detected independently Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Defective moving part of float switch Foreign matter on the moving part 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 Check if drain pump works Check drain function Check moving part of float switch Check the value of resistance with the float switch ON OFF Change the indoor controller board Check whether the indoor linear expansion valve leaks or not Drain sensor THd DS abnormality When the drain sensor detects short open while
127. perated OCH502 Display Abnormal point and detecting method Causes Check points 1102 High discharge 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 D Over heated compressor operation caused by shortage of refrigerant Defective operation of stop valve Defective thermistor Defective outdoor controller board Defective action of linear expansion valve Check intake super heat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is full open Turn the power off and check if 5101 is displayed when the power is put again When 5101 is displayed refer to Check points for 5101 Check linear expansion valve Low pressure 63L operated Abnormal if 63L is operated under 0 03MPa 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
128. peration lamp i i X Y Relay Coil standard of 0 9W or less for DC 12V 3 X Y Relay DC1mA e Auto change over CN3N a US SSS g E GES 5 Remote control panel Relay power supply i I i T i i Relay circuit Procure locally i6 SVMTi i x m 1 qi CN3N External input adapter PAC SC36NA Max 10m i I i xt ee i lli o Outdoor unit control board i e swe SS Y il ahi ON OFF i Ee d Y i i SW1 Heating Cooling i i i SVV21 Validity of SVV1 Invalidity of SVV1 inan n aD d ml gt e Silent Mode Demand Control CN3D sessi Birt x s n Ta OM aes i i i il i Remote control panel Relay power supply 1 Swi i id i Relay circuit Procure locally m X CH 4 gi CN3D External input adapter PAC SC36NA Max 10m i La Xr I 2 i Outdoor unit control board SW2 i i Pd aL TT i i Y m i H as HEH I Pod 1 HO J ox gt The silent mode and the demand control are selected by switching the Dip switch 2 6 on outdoor controller board It is possible to set it to the following power consumption compared with ratings by setting SW1 2 Outdoor controller board DIP SW2 6 SW1 SW2 Function Silent mode OFF ON Silent mode operation Demand control ON OFF OFF 100 Normal ON OFF 75 ON ON 50 OFF ON 0 Stop OCH502 54 rrn cc v q 8 7 HOW
129. 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 OCH502 The power supply of the indoor unit Master is not on The transmission line of the indoor outdoor unit is connected to TB15 The transmission line of the indoor outdoor unit is shorted down or badly contacted The fuse on the indoor unit controller board is blown Check the part where the abnormality occurs The entire system In the entire refrigerant system In same group only 1 indoor unit only In case of the entire system or in the entire refrigerant systems Check the self diagnosis LED of the outdoor unit Check the items shown in the left that are related to the outdoor unit In case of in same group only or 1 indoor unit only Check the items shown in the left that are related to the indoor unit mt 8 4 THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE EMERGENCY Symptom Display of remote controller CAUSE Even the cooling heati
130. r temp TH22j Indoor intake thermistor TH21j 10 C 14 F Indoor gas pipe thermistor temp TH23j Indoor intake thermistor TH21j 10 C 14 F Indoor liquid pipe thermistor temp TH22j 3 C 37 F Indoor gas pipe thermistor temp TH23j 5 3 C 37 F For indoor unit the abnormality is detected if an operating unit satisfies the condition OCH502 4 way valve failure O Disconnection of 4 way valve coil 4 vvay valve coil failure Clogged drain pipe Loose connection or disconnection of connector Input circuit failure of multi controller board 34 Check the 4 way valve Check the 4 vvay valve coil Check the resistance of the 4 vvay valve coil Check the connection of the 4 vvay valve coil Check the controller board 4 vvay valve output Abnormal point and detecting method Causes Check points Water leakage 1 Suspensive Abnormality when float switch detects to be in the water and drain pump turns on and off except during cooling or dry mode Abnormal when detecting that the drain pump turns on and off again within 1 hour after the detection of water leakage suspensive abnormality and repeats the detection twice lt 2500 gt is displayed The unit continues to detect abnormality while turned off To release water leakage suspensive abnormality When not detecting that the drain pump turns off and on within 1 hour after detecting suspensive abnormal
131. r trouble TH2 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 lt 5109 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 C 40 F or less Connector TH2 contact failure Thermistor wiring disconnection or half disconnection Thermistor failure Multi controller board input circuit failure Check whether the connector TH2 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 O C 32 F 15kQ 10 C BO F 9 6kO 20 C 68 F 6 3kQ 30 C B6 F 4 3kO 40 C 104 F 3 0kQ 12345678 0 Set the SW11to VVhen the temperature in multi controller board is not an actual temperature replace the multi controller board Heatsink temperature thermistor TH8 When controller detects short open in thermistor during the operation the outdoor unit stops onc
132. ries will depend on the remote con trollers and whether they are linked with the system 9 3 1 Selection number of control wires M NET remote controller Remote controller used in system control operations Use Group operation involving different refrigerant systems Linked operation with upper control system Remote controller indoor unit Wires connecting indoor units 2 wires non polar Wires connecting indoor units with outdoor unit Transmission wires Wires connecting outdoor units 9 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 9 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 9 3 4 MA Remote control cables Kind of remote control cable 2 core cable unshielded Cable diameter 0 3 to 1 25 mm AWG 22 to AWG 16 9 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 contr
133. rigerant 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 Gravimeter 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 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 Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment OCH502 3 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix wit
134. s Q Defect of the transmission and reception circuit of the remote controller O 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 Gen Check the remote controller According to the results perform the following disposals When RC OK is displayed the remote controller is normal Turn off the power supply and turn it on again If HO or PLEASE WAIT is displayed for 4 minutes or more replace the indoor controller board When RC NG is displayed Signal transmission Remote controller Following symptoms are regarded as abnormality 1 When sub remote controller cannot transmit the signal to the transmission path for 6 minutes 2 When the remote controller cannot finish transmitting the signal for 30 times on end O 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 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 When connected total models of the indoor units exceed the specified level 13096 of the outdoor unit models error code 7100
135. s not possible ASI O 12 SELF ZHECK sae F lt Dr LL L There might be noise or interference on the transmission path or the indoor unit or other remote controllers are defective Check the transmission path and other controllers To cancel remote controller diagnosis When the remote controller malfunctions Error display 1 NG flashes The remote controller s transmitting receiv ing circuit is defective SELF CHECK HI um Error display 3 ERC and the number of data errors are displayed Data error has occurred SELF CHE H ERC The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmis sion path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path 2 e gs When the number of data errors is 02 Transmission data from remote controller Transmission data on transmission path i nir Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp will flash After approximately 30 seconds the state in effect before the diagnosis will be restored OCH502 49 8 3 REMOTE CONTROLLER TROUBLE DONOFF ds FILTER nl sa QB LO bal C25 SEE CHECK TEST gt C500
136. se the rated capacity and rated input given in 4 2 The input is the single value on the side of the outdoor unit the input on the sides of each indoor unit must be added to obtain the total input 2 The capacity of each indoor unit may be obtained by multiplying the total capacity obtained in 1 by the ratio between the individual capacity at the rated time and the total capacity at the rated time individual capacity at the rated time Individual capacity under stated conditions total capacity under the stated conditions x total capacity at the rated time 3 Capacity correction coefficient curve Figure 1 Cooling performance curve Figure 2 Heating performance curve is 14 13 13 CDB FDB e 1 2 15 59 i CWB FWB 14 Ratio of heating capacity n 24 75 2 1 0 21 1 70 1 0 22 71 6 0 9 of cooling capacity 20 68 0 8 25 77 18 64 4 m 272 81 0 8 16 80 8 0 6 INDOOR zi INDOOR 0 5 s 0 4 14 C WB FWB 1 4 1 3 24 75 2 1 3 22 71 6 input 1 2 20 68 1 2 120605 is CDB FDB 14 16 80 8 FDB 1 0 15 59 1 0 io of power inpu INDOOR 0 9 59 0 9 0 8 21 1 70 0 7 Ge 25 77 07 27 2 81 0 5 INDOOR 0 6 0 4 19 0 10 20 30 40 50 CDB 25 20 15 10 5 0 5 10 15 20 CWB 14 32 50 68 86 104 122 FDB
137. ss does not exist 2 Decline of transmission voltage and signal by transmission line tolerance over The furthest point 200m 656ft Remote controller line 12m 39ft Refer to 8 3 3 Decline of transmission line voltage and signal by unmatched kind of line Shield line CVVS CPEVS Line diameter 1 25 m fAVVG16 or more 4 Decline of transmission line voltage and signal by a number of over connected units 5 Mis operation of origin controller which happens by chance 6 Original controller defective 1 Contact failure of outdoor unit or indoor unit transmission line 2 Indoor unit transmission connector CN2M disconnection 3 Sending receiving signal circuit failure in the indoor outdoor unit 1 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 2 Contact failure of remote controller or indoor unit transmission line 3 Indoor unit transmission connector CN2M disconnection 4 Sending receiving signal circuit failure in the indoor unit or remote controller 44 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 from the malfunction that happens by chance Check the address switc
138. ss 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 C4 Cv buttons are pressed the address may be changed to the indoor unit that are to be linked If the time setting C4 2C Y 2 buttons are pressed the address of the linked units may be changed to the address where it is desired to enter the Lossnay Linking the Lossnay and the indoor unit The display shown in Figure 5 will appear when the TEST RUN button is pressed The indoor unit whose address is displayed and the Lossnay unit with a linked address will operate in a linked manner 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 Z 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 ww md l TM TM alternating E 2 Sys will appear a when entry is completed normally The addresses
139. t 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 The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation Fan motor rotational frequency is abnormal if 100 rpm or below detected continuously for 15 seconds at 20 C 68 F or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute OCH502 Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board Check or replace the DC fan motor Check the voltage of the outdoor circuit controller board during operation Replace the outdoor circuit controller board when the failure is still indicated even after performing the check points above 37 Abnormal point and detecting method Causes Check points Room temperature thermistor TH21 When controller detects short high temp open low temp in thermistor during the operation the operation stops and the operation changes to protect mode of restarting in 3 minutes If the thermistor does not recover in 3 minutes the operation stops due to detecting
140. t room 3 Use the results of calculations 1 and 2 to calculate the refrigerant concentration Total refrigerant in the refrigerating unit kg lbs maximum concentration The smallest room in which an indoor kg nv Ibs ft unit has been installed m ft3 i 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 maximum concentration be exceeded OCH502 76 11 DISASSEMBLY PROCEDURE PUMY P6ONKMU PUMY P60NKMU BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the front service panel and top panel lt Service panel gt 1 Remove 3 front service panel fixing screws 5 x 12 2 Slide the hook on the right downward to remove the serv ice panel lt Top panel gt 1 Remove the top panel fixing screws 3 for front 3 for rear 5 x 12 2 Lift the top panel to remove it The top panel and the service panel share one of the SCTEVVS Photo 1 Top panel fixing screvvs Top panel MF1 fan Grille fixing screws MF2 fan Grille fixing screws 4 Service or top panel fixing screw 2 Front service panel Fan grille Service panel fixing screws Fan grille 2 Removing the fan motors MF1 upper and MF2 lower 1 Remove the service panel and t
141. the temperature adjustment CDC buttons to change the displayed address to the address to be entered Entering the displayed address Press the TEST RUN button to enter the indoor unit with the displayed address The type of the unit will be displayed as shown in Figure 2 if entry is completed normally If a selected indoor unit does not exist an error signal will be displayed as shown in Figure 3 When this happens check whether the indoor unit actually exists and perform entry again e Returning to the normal mode after completing entry Press the FILTER and xx 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 Fra moe woe n D ADDRESS NO ADDRESS NO Type of unit is displayed Flashing 88 indicates entry error b Paired Settings Turn off the remote controller Press the remote controller s ON OFF button to turn it off the indicator light will go off e Put in indoor unit address display mode Press the FILTER and Sx buttons on the remote controller simultaneously and hold for 2 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 bes button on the remote control is pressed Displaying the addre
142. thin the same group plus 100 Sub Remote Controller 151 to 200 Set at an IC Main address vvithin 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 are done by the remote controller RC after the electri cal povver has been turned on OCH502 23 e Name Symbol and the Maximum Units for Connection Longest length via outdoor units L1 L2 L3 L4 Li L2 L3 L5 L1 L2 L6 L7 500 meters 1450ft 1 25mm AWG16 Longest transmission cable length L1 L3 L4 L3 L5 Le 2416 L7 200 meters 656ft 1 25mm AWG16 Remote controller cable length 1 2 2 3 44 10 meters 33ft 0 5 to 1 25mm AWG20 to AWG16 If the length exceeds 10 meters 33ft use a 1 25 mm AWG16 shielded wire The length of this section L8 should be included in the calculation of the maximum length and overall length Permissible Length OC 53 T87 X Prohibited items Shielded Wire Sub Remote Controller e Address
143. tion 72 Gas Line 19 05 3 4 From Branch to Branch SS 495r 3 4 Liquid Line mm inch Gas Line mm inch 49 52 3 8 19 05 3 4 m Additional refrigerant charge Additional Charge Refrigerant for the extended piping is not Additional Liquid pipe size Liquid pipe size included in the outdoor unit when the unit is refrigerant charge Total length of Total length of shipped from the factory 9 52 x 0 07 kg 6 35 x 0 027 kg Therefore charge each refrigerant piping RS eS 0 047 0 018 lbs P42 2 0kg 4 4lbs system with additional refrigerant at the kg m x 0 07 kg m m x 0 027 kg m P43 P60 2 5kg 5 5lbs installation site In addition in order to carry out Ibs ft x 0 047 Ibs ft ft x 0 018 Ibs ft P61 3 0kg 6 6lbs service enter the size and length of each liquid pipe and additional refrigerant charge amounts n the spaces provided on the Refrigerant amount plate on the outdoor unit Total capacity of Amount for the connected indoor indoor units units lt Calculation example gt Outdoor model P60 Indoor 1 P24 A 99 52 3 8 10 m 33 ft a 9 52 3 8 15m 49 ft 2 P15 49 52 13 8 10 m 33 ft b 46 35 1 4 10m 33 ft m Calculation of additional refrigerant charge i Calculate the additional charge using the
144. tor CN2 Breaking of wire or contact failure of connector CN4 Defective communication circuit of outdoor power board Defective communication circuit of outdoor multi board for power board 48 Check connection of each connector CN2 CN4 Replace outdoor power board Replace outdoor multi board 8 2 REMOTE CONTROLLER DIAGNOSIS NA remote controller is equipped with the diagnosis function Ifthe air conditioner cannot be operated from the remote controller diagnose the remote controller as explained below First check that the power on indicator is lit If the correct voltage DC12 V is not supplied to the remote controller the indicator will not light If this occurs check the remote controller s wiring and the indoor unit Switch to the remote controller self diagnosis mode Press the CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK L Power on indicator Press the FILTER button to start self diagnosis Ku SELECHECK ek Remote controller self diagnosis result When the remote controller is functioning correctly SELECHECK BC gt Check for other possible causes as there is no problem with the remote controller Where the remote controller is not defective but cannot be operated Error display 2 E3 6833 or 6832 flashes Transmission i
145. xample 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 1 single outdoor unit and multiple outdoor units for M NET remote control system Use 1 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 OC 51 TB3 TB7 TB5 15 Mi ds 1 remote controller for each indoor unit There is no need for setting the 100 position on the remote controller a Use feed wiring to connect terminals M1 and M2 on transmission cable block TB3 for the outdoor unit OC to terminals M1 and M2 on the transmission cable block TB5 of each indoor unit IC Use non polarized 2 wire b Connect terminals M1 and M2 on transmission cable terminal block TB5 for each indoor unit with the terminal block TB6 for the remote controller RC c Set the address setting switch on outdoor unit P C B as shown below Unit Range Setting Method Indoor unit IC 001 to 050 Outdoor unit Use the smallest OC 051 to 100 a
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