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TECHNICAL MANUAL

1. Safety breaker 16A gt Earth Earth Earth bale Earth Ede TON circui circui de 1 2 N 3 D Ed 1 PN 3 El D1 D3 C response Indoor unit Indoor unit DRED devices Power Power supply supply Connecting cable between outdoor unit When wire length When wire length and DRED shall be double insulation exceeds 30m use exceeds 30m use layer polychloroprene sheathed gt 50V 2 5mm wires 2 5mm wires with size 4 x 0 5mm to 2 0mm cable or flexible cord where the maximum allowable length is 30m Always perform grounding system installation work with the power cord unplugged Connect a pair bearing a common terminal number with an indoor outdoor connecting wire In cabling fasten cables securely with cable clamps so that no external force may work on terminal connections rounding terminals are provided in the control box Always use an earth leakage circuit breaker designed for inverter circuits to prevent a faulty operation CAUTION Switchgear or Circuit Breaker Interconnecting and Power source i Over current protector m grounding wires minimum Pani leakage VEEN rated capacity minimum 15A 30mA 30A 16A 2 0mm 1 5mm X 4 0 1sec or less Single phase
2. Operation in the network option is enabled for Network d ie Bn option the indoor unit in the same mode Locking supports 4 With no remote control Wireless remote control SL E board Outdoor Electrical shock hazard Make sure to turn the power off for servicing Be cautious so that Indoor to outdoor Indoor to outdoor connection 3 core connection 3 core no abnormal force should be applied to the wiring Do not let the SL E board hung by the Indoor Indoor indir wiring Do not damage the board with a screw driver mm The board is sensitive to static electricity Release the static electricity of your body before p Set up the SL E board dip switch SW3 1 servicing to be ON Master Wireless interface Network options SLA1 ER SL1N E not you can do this by touching the control board which is grounded available operation mode cannot be Switched Network Network option option Wireless remote control Location of installation Install the device at the location where there are no electromagnetic waves nor where there is water and dust The specified temperature range of the device is O to
3. AN Power cable Indoor Outdoor connecting wire Model SRC20 35ZMA S Model SRC20 35ZMXA S Model DXC09 12ZMA S N Power cable 2 4 Indoor Outdoor DRED cable connecting wire Demand response enabling devices Model SRC50ZMA S Model DXC18ZMA S 2 la E LJ V 1 RE So Power cable Indoor Outdoor DRED cable connecting wire Demand response enabling devices 9v L L MHS El 0 9 UTILIZATION OF EXISTING PIPING Check whether an existing pipe system is reusable or not by using the following flow chart START Are an outdoor unit and an indoor unit connected to the existing pipe system to reuse YES YES Which of the following refrigeration oils i NO NO does the existin
4. a The annual cooling function can be enabled or disabled by means 1 CUNI FLAP LOUYER 1 FLAP LOUYER of the jumper wire J172 on the indoor unit PCB and the dip switch CNF HUMIDITY SW2 4 on the interface kit option PCB Eque 1 16102 1 16108 nnn Jumper wire ds E p SC BIKN E Function lt J172 e SW2 4 JP111 custom F 1 raat EE 99170 Note 1 Default states of the Jumper wire J172 and the interface kit at the shipping from factory On the ON PCB the dip switch SW2 4 is set to enable the annual cooling function OFF 2 To cancel the annual cooling setting consult your dealer b Content of control Emm 1 If the outdoor air temperature sensor TH2 detects below 5 C the indoor Outdoor air temperature C unit speed is switched to 7th step 11 If the outdoor air temperature sensor TH2 detects higher than 17 C the indoor unit speed is changed to the normal con trol speed 6 High power operation Pressing the HI POWER ECONO button intensifies the operating power and initiates powerful cooling and heating operation for 15 minutes continuously The wireless remote control displays and the FAN SPEED display disappears a b c d e f During the HIGH POWER operation the room temperature is not controlled When it causes an excessive cooling and heating press the HI POWER ECONO button again
5. Self diagnosis table Service mode Trouble mode access function Inspection procedures corresponding to detail of trouble Phenomenon observed after shortcircuit wire breakage on sensor Checking the indoor electrical equipment _ Mm Mm Mm How to make sure of wireless remote control Inspection procedure for blown fuse on the indoor and outdoor PCB Outdoor unit inspection points Entre aq Reb VERE dS OPTION PARTS 1 Wired remote control RC E5 a aaa ra 2 Interface kit SC BIKN E _ 3 Super link E board SC ADNA E _ ae N O WAN O O Cc IN ae uu ae 12 TECHNICAL INFORMATION How to read the model name Example SRK 20 Z MX S Series code Inverter type Product capacity Cooling capacity 2 0kW Model name SRK Wall mounted type SRC Outdoor unit 13 SRK T 146 1 SPECIFICATIONS SRK20ZMX S Indoor unit
6. 290 312 5 351 6 290 312 5 351 6 Y y 2 Notabilia for installation Fasten with bolts M10 12 14 8 A eo B Use a long block to extend the width Use thicker block to anchor deeper n installing the unit fix the unit s legs with bolts specified on the above The protrusion of an anchor bolt on the front side must be kept within 15mm Securely install the unit so that it does not fall over during earthquakes or strong winds etc Refer to the above illustrations for information regarding concrete foundations Install the unit in a level area With a gradient of 5mm or less Improper installation can result in a compressor failure broken piping within the unit and abnormal noise generation 9v L L MHS El 9 2 REFRIGERANT PIPING WORK 1 Restrictions on unit installation and use Check the following points in light of the indoor unit specifications and the installation site Observe the following restrictions on unit installation and use Improper installation can result in a compressor failure or performance degradation e Additional refrigerant charge is not required at all Model SRC20 35 DXC09 12 Restrictions Main pipe length Elevation difference between When the outdoor unit is positioned higher Dimensional restrictions Model SRC20 35 DXC09 12 15m or less 10m or less Model SRC50 DXC18
7. LU FAW Airflow of fan becomes of amp aut ual H MD Airflow of fan becomes of 3taut Statt Airflow of fan is fixed at one speed If you change the remote control function 14 POSITION you must change the indoor function 04 SA POSITION accordingly APUSITION STOP O You can select the louver stop position in the four FREE STOP The louver can stop at any position HEAT PUMP COOLING ONLY POSITION MODEL TYPE Es TERNAL CONTROL SET INDIVIDUAL If you input signal into CNT of the indoor printed circuit board from external the indoor unit will be operated independently according to the input from external FOR ALL UNITS Jif you input into CNT of the indoor printed circuit board from external all units which TTT MUTT connect to the same remote control are operated according to the input from external INDICATION INDICATION ON normal working indication indoor unit temperature is indicated instead of airflow Only the master remote control can be indicated HINDIDATIONON INDICATION OFF __ Heating preparation indication should not be indicated 49 ic 1 OQ Temperature indication is by degree C F Temperature indication is by degree F Note 1 mark cannot use SRK serles ON OFF button finished Airflow of fan becomes of 3tuill the four speed of ulll Staal Sunl 13 SRK T
8. 2 1 6 11 If voltage is detected the outdoor 15 normal iv If the expansion valve does not operate no operating sound while voltage is detected the expansion valve is defective Inspection of electronic expansion valve as a separate unit Measure the resistance between terminals with an analog tester Measuring point Resistance when normal 1 6 1 5 46 4Q 1 4 at 20 C 1 3 b Outdoor unit fan motor check procedure When the outdoor unit fan motor error is detected diagnose which of the outdoor unit fan motor or outdoor PCB 15 defective Diagnose this only after confirming that the indoor unit 1s normal 1 Outdoor PCB output check 1 Turn off the power 2 Disconnect the outdoor unit fan motor connector CNFAN 3 When the indoor unit is operated by inserting the power supply plug and pressing ON the backup switch for more than 5 seconds if the voltage of pin No 2 in the following figure is output for 30 seconds at 20 seconds after turning ON the backup switch the outdoor PCB is normal but the fan motor is defective If the voltage is not detected the outdoor PCB is defective but the fan motor is normal Note 1 The voltage is output 3 times repeatedly If it is not detected the indoor unit displays the error message Measuring Voltage range when point normal 6 4 DC 308 336V E 2 pcisv 2 4 DC several V 4 7V CNFAN Outdoor PCB
9. 1 Remote Remote 1 remote control Factory setting Master MER Caution Remote control sensor is invalid oe 5 Q When using the wireless remote control in parallel with the wired remote control Since temperature setting range of wired remote control is different from that of wireless remote control please adjust the setting range of wired remote control to be the same setting range of wireless remote control by following procedure The set temperature may not be displayed correctly on the wireless remote control unless change of temperature setting range is done Changing procedure of temperature setting range is as follows 1 Stop the air conditioner and press SET and MODE button at the same time for 3 seconds or more The indication changes to FUNCTION SET w Press W button once and change to the TEMP RANGE indication PressC O SET button and enter the temperature range setting mode Confirm that the Upper limit W is shown on the display Press _O_ SET button to fix Indication VV SET UP UPPER 28C V A 2 Select the upper limit value 30 C with temperature setting button A UPPER30 C V blinking S Press CO button to fix UPPER 30 C Displayed for two seconds After the fixed upper limit value displayed for two seconds the indication will returm to UPPER LIMIT Y 2 Previous button Press W button once LOWER LIMIT is selected press o SET button to fix
10. YES Indoor electrical components are normal 13 SRK T 146 b Indoor unit fan motor check procedure This is a diagnostic procedure for determining if the indoor unit s fan motor or the indoor PCB is broken down 1 Indoor PCB output check a Turn off the power b Remove the front panel then disconnect the fan motor lead wire connector c Turn on the power If the unit operates when the ON OFF button is pressed if trouble is detected after the voltages in the following figure are output for approximately 30 seconds it means that the indoor PCB is normal and the fan motor is broken down If the voltages in the following figure are not output at connector pins No 1 4 and the indoor PCB has failed and the fan motor 1s normal DC several V 4 6 V GND DC 308 336V DC15V Measuring Voltage range when point normal 777 x SS DC 308 336V CNU Indoor PCB b 4 3 2 D DC15V 3 DC several V 4 6V I l 2 D i 9 T 3 amp m gt m 2 Fan motor resistance check Measuring point Resistance when normal Notes 1 Remove the fan motor and measure it without power connected to it CD 9 Red Black 20 MQ or higher 2 If the measured value is below the value when the motor is normal it means 20 or higher that the fan motor is faulty 4 White Black 13 e SRK T 146 10 How to make sure of wireless remote contro
11. _ 7 S OO ss T O m DC280V Se SN 541 O 53 J52 R24 1 k 0 Ly Cow C S REN S 31 VA Qe lt SN CROSS SUL E S I sss SN xi o ges Xe
12. 1 Connect the connection wire securely to the terminal Harmonized cable type block If the wire is not affixed completely contact will be 05 300 500 volts poor and it is dangerous as the terminal block may heat R Natural and or synth rubber wire insulation up and catch fire N Polychloroprene rubber conductors insulation 2 Take care not to confuse the terminal numbers for indoor R Stranded core and outdoor connections 4075 Number of conductors Fix the connectin g wire by wiring clamp G conductor of the cable is the earth conductor d Attach the service panel yellow green e d 1 5 Section of copper wire mm Filter holder D Close the air inlet panel x Earth wire shall be Yellow Green Y G in color and longer than other AC wires for safety reason Tnn Air cleaning filter INSTALLATION OF WIRELESS REMOTE CONTROL Fixing to pillar or wall O Uncover the wireless remote control and mount the batteries R03 AAA Micro O Conventionally operate the wireless remote control by holding X 2 pieces in the body regularly in your hand Fit the poles with the indication marks amp without fail Avoid installing it on a clay wall etc N CAUTION g Q Do not use new and gt old batteries together Ap di Wireless remote
13. 208 201 outdoor indoor air temp 26 CDB 27 CDB 28 CDB 31 CDB 33 CDB Air flow air temp Air flow air temp WOWB 16 CWB 18 CWB 19 CWB 20 CWB 22 CWB 24 CWB Senn eccus 22008 shone EASA HC stcwe 193 n H i 6 N 2 85 2 58 2 98 2 74 2 70 3 10 2 84 2 78 3 15 2 80 2 56 2 93 2 71 2 69 3 05 2 82 2 77 3 20 274 2 54 2 88 2 69 2 95 2 67 3 01 2 81 2 75 3 40 2 68 2 51 2 83 2 67 2 90 2 65 2 96 2 80 3 19 2 74 3 70 2 62 248 2 78 2 64 2 85 2 64 2 91 278 3 15 2 72 3 98 2 42 2 30 2 56 2 43 2 72 2 59 2 80 2 62 2 86 2 60 2 99 2 76 3 10 2 71 2 61 22 2 11 2 36 224 2 55 2 42 2 64 2 50 2 70 2 54 2 85 270 2 96 2 67 9 2 29 2 18 2 49 2 36 2 58 2 45 2 64 2 65 2 91 E 26 2 14 2 46 2 33 255 2 42 261 248 2 77 2 63 2 89 2 65 222 2 11 2 43 2 30 252 239 2 58 2 45 2 74 2 60 2 86 2 64 15 2 04 236 224 246 2 34 2 52 2 39 2 69 2 55 2 81 2 60 0 2 21 2 31 2 49 2 36 2 52 2 59 Model SRK35ZMX S Cooling Mode kW Heating Mode HC kW Indoor air temp Outdoor 21 CDB eecoB ercpe 28 srcpe Air flow airtemp 1ycwB 18cwB 19cwe 2zcwB 24cwB SHC SHC sHC Tc SHC suc suc 3 2 65 2 95 290 319
14. Faulty Super Link signal circuit Faulty address setting for the SL E board Flashing Set up the address for previous SL E board more than 48 new SL E board more than 128 e SL E board parent not set up when used Flashing without a remote control E1 e Faulty remote control communication circuit e Address overlapping for the SL E board Two flashes When installed on the back of the remote control mount it directly on the remote control bottom case Three flashes Four Flashing and the Super Link network connected E2 flashes I indoor unit Off Flashing e Number of connected devices exceeds the E10 specification for the multiple indoor unit control PJZ012D029C 13 SRK T 146 12 TECHNICAL INFORMATION Model SRK20ZMX S Information to identify the model s to which the information relates to Indoor unit model name SRK20ZMX S Outdoor unit model name SRC20ZMX SA If function includes heating Indicate the heating season the information relates to Indicated values should relate to one heating season at a time Include at least the heating season Average Function indicate if present Average mandatory cooling Warmer if designated No heating Colder if designated No Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling 200 cooling SE heating Average heating Average SCOP A
15. Refrigerant oil Amount type Poe 0 35 DIAMOND FREEZE MA68 Refrigerant Type amount pre charge length kg R410A 1 2 in outdoor unit incl the amount for the piping of 15m Heat exchanger EN Louver fins amp inner grooved tubing M fins amp inner grooved tubing Refrigerant control IEEE Capillary tubes Electronic expansion valve Fan type amp Q ty mm Tangential fan x 1 Propeller fan x 1 Fan motor Starting method 30 x1 Direct drive 24 x1 Direct drive s Hi 12 5 Me 9 0 10 63 ULo 5 0 Air flow m min 13 0 Me 10 0 Lo 7 5 6 3 27 0 Available external static pressure Outside air intake NEM Not possible po Air filter Quality Quantity Polypropylene net washable x 2 mM Shock amp vibration absorber a Rubber sleeve for fan motor Rubber sleeve for fan motor amp compressor Electric heater boom ee Defrost heater 230V 110W Remote control NN Wireless remote control Moon Hoom temperature control Microcomputer thermostat Operation display RUN Green TIMER Yellow HI POWER Green 3D AUTO Green ECONO Blue Compressor overheat protection Overcurrent protection Safety equipments Frost protection Serial signal error protection Indoor fan motor error protection Heating overload protection High pressure control Cooling overload protection Refrigerant piping size O D Liquid line 6 35 1 4 Gas line 9 52 3 8 Connecting method Flareconnection Flare
16. Indication 4 V A SET UP gt LOWER 20 C V A Select the lower limit value 18 C with temperature setting button Vl LOWER18 C A It is possible to quit in the middle by blinking pressing button but the S Press CO SET button to fix LOWER 18 C Displayed for two seconds change of setting is incompleted After the fixed lower limit value displayed for two seconds the indication will returm During setting if pressing to LOWER LIMITY RESET button it returns to the Press ON OFF button to finish previous screen Temperature setting range Cooling Heating Dry Auto 18 30 C DIP suitch SW2 2 7 1234 1234 Rotary switch TEMP RANGE A TEMP D ON OFF geo oo 3 Super link E board SC ADNA E Read and understand the instructions completely before starting installation Refer to the instructions for both indoor and outdoor units 13 e SRK T 146 PJZ012D029F Safety precautions Carefully read Safety precautions first Follow the instructions for installation Precautions are grouped into Warning A and Caution A The Warning N group includes items that may lead to serious injury or death if not observed The items included in the Caution A group also may lead to serious results under ce
17. Right end installation Left Approx 50 Left Approx 45 Left Approx 30 Center Right Approx 20 Left end installation Left Approx 20 Center Right Approx 30 Right Approx 45 Right Approx 50 c Swing 1 Swing flap n Swing louver Flap moves in upward and downward Louver moves in left and right directions continuously directions continuously In HEAT operation In COOL DRY FAN operation AN a ____ Approx 20 Approx 60 Approx 75 d Memory flap Flap or Louver stopped When you press the AIRFLOW UP DOWN or LEFT RIGHT button once while the flap or louver is operating it stops swing ing at the position Since this angle is memorized in the microcomputer the flap or louver will automatically be set at this angle when the next operation is started e When not operating The flap returns to the position of air flow directly below when operation has stopped 9 3D auto operation Control the flap and louver by 3D AUTO button on the wireless remote control 13 SRK T 146 Air flow selection and air flow direction are automatically controlled allowing the entire indoor to efficiently conditioned a During Cooling and Heating Including auto cooling and heating 1 flow selection is determined according to indoor temperature and setting temperature Operation mode Air flow selection AUTO HI MED LO Coolin Indoor temp Setting temp gt 5 Indoor tem
18. The specifications shown in the above table are for units without heaters For units with heaters refer to the installation instructions or the construction instructions of the indoor unit e Switchgear or Circuit breaker capacity which is calculated from MAX over current should be chosen along the regulations in each country The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2 For an installation falling outside of these conditions please follow the internal cabling regulations Adapt it to the regulation in effect in each country Model SRC20 35ZM S SA Model SRC20 35ZMX S SA e Earth wire shall be Yellow Green Y G in color and longer than other AC wires for safety reason Indoor Outdoor Power cable connecting wire Model SRC50ZM S e e Earth wire shall be Yellow Green Y G in color and longer than other AC wires for safety reason
19. b Outline of control 1 Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference Indoor unit fan speed Area Indoor unit fan speed Limited Lower than normal cooling operation Compressor speed Minimum Lower than the speed in Area A set temperature Difference between set temperature and return temperature The indoor unit check the current area by every 5 minutes and operate by the next checking c Other When the outside temperature and room temperature is low for cooling operation indoor unit can not operate in cooling and dehumidify In this case the units operate in heating to rise the room temperature and after that start DRY operation 17 Outline of automatic operation a Determination of operation mode The unit checks the indoor air temperature and the outdoor air temperature determines the operation mode and then begins in the automatic operation Cooling 27 5 mmm Indoor air temperature C Dehumidifying 19 5 TTT ee Heating Outdoor air temperature C b c d 13 SRK T 146 The unit checks the temperature every hour after the start of operation and if the result of check is not same as the previous operation mode changes the operation mode When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is se
20. dons ud ee 9 S o olt LM Bor mee um Q do iO uri NS REX SS dea z zE ROR TR 9 z 99 9 9 4 le B wise o 50905 N d por sO MU x BE S65 3 54 P S S soar og 9 m 126 z 5 B Piol eee sys Es S pc d mi p vix NN 27 Y D E d Oo exe D99 9 n N 4 8 o9 W165 o n o out N es 2 RoHS E F tere Pro zx E spe we Sgae 050 008 o o 5006 S n SU he N NS Qo ab e i Z ae R5926 NN Q a m ae 0008 san P QN Gio zs cb 5 roma 0 88 d H ze 56 sen 990 g la o 1 a S a 5 n 29 55 z dm S z c 0 Oo N oe ee 0 00 NS cg Ba SN o9 ales daB AB Qo gt ig VS E 52 10 o iz 000 Sang 58 c Org 55 55 9 9 990 ze 580 CH 9 N SE cn 58 Ayes Hess 9 OBE 99 65650 OQ 9 875 Oo E ail X Us E zz 5 8 z b S eo 3 zid o vati On O p e ka RIED ER 9 5 9 9 p z o o 9 9 zx 2 eno
21. the same room 32 b Selection of the annual cooling function 33 6 High power operation 33 7 Economy operation esssese menn nennen nennen nens 39 8 Flap and louver control 34 9 3D auto operation 35 10 Timer operation 36 AR NE udoMM 36 WOME GD CC ccc 36 13 Installation location setting 36 14 Outline of heating operation a a 37 15 Outline of cooling operation 38 16 Outline of dry dehumidifying operation 39 17 Outline of automatic operation 39 18 Protective control funcion T em 40 19 Defrost heater control 45 13 SRK T 146 10 MAINTENANCE 11 NON CAUTIONS Items to check before troubleshooting Troubleshooting procedure If the air conditioner does not run at all Troubleshooting procedure If the air conditioner runs
22. Replace the fuse and check the operation Is there any damage on the internal circuit of fan motor Check the resistance value to judge See pages 63 to 66 Replace the fuse on the indoor and outdoor PCB When the operation is checked without connecting the fan motor connector does the fuse blow Replace the fan motor and check the operation Replace the indoor and outdoor PCB and the fan motor Check then the operation 13 e SRK T 146 12 Outdoor unit inspection points Models SRC20ZMX SA 25ZMX SA 35ZMX SA Check point of outdoor unit CAUTION HIGH VOLTAGE High voltage is produced in the control box Don t touch electrical parts in the control box for 5 minutes after the unit is stopped Power source and serial signal inspection D to N AC 220 230 240V D to GN AC 220 230 240V to 3 Normal if the voltage oscillates between DC 0 and approx 20V Color symbol Voltage check in PCB Mark Color The normal range is as follows Display Voltage range BK Black DDC280V DC230V DC310V Power source BL Blue DDC 20V DC 18V DC 22V 1 Phase BR Brownt 3DC 13V 12V DC 14V AC200 240V 50Hz ADC 15V DC 14V DC 16V OR Orange PDC 5V DC 4V DC 6V AE Indoor RD Red DC 2 5V DC 23 DC 2 5V ME mE unit WH White TERMINAL Yellow Green eee 22 Outdoor unit
23. Where space mentioned below can be secured Where wiring and the piping work will be easy to conduct The place where receiving part is not exposed to the direct rays of the sun or the strong rays of the street lighting O A place where it can be easily drained O A place separated at least 1m away from the television or the radio To prevent interference to images and sounds O Places where this unit is not affected by the high frequency equipment or electric equipment O Avoid installing this unit in place where there is much oil mist O Places where there is no electric equipment or household under the installing unit Wireless remote control O A place where the air conditioner can be received the signal surely during operating the wireless remote control Places where there is no affected by the TV and radio etc A CAUTION Do not place where exposed to direct sunlight or near heat devices such as a stove Completely seal the hole on the wall with putty Otherwise INSTALLATION OF INDOOR UNIT future or other may be wetted by leaked water or Installation of installation board dewing Indoor side putty 3 Outdoor side putty Look for the inside wall structures Intermediats support or pillar and firmly install the unit after level surface has been checked Fixing on concrete wall COIP Use of nut anchor Use of b
24. C 38 C maintain outdoor fan speed c Outdoor heat exchanger tempeature gt 38 C After the outdoor fan speed rises up to 1 speed for 60 seconds if the outdoor heat exchanger temperature is higher than 38 C gradually increase outdoor fan speed by speed Upper limit 3rd speed 3 Reset conditions When either of the following conditions is satisfied a The outdoor air temperature TH2 is 25 C or higher b compressor command speed is 0 rps r 13 SRK T 146 i Heating 1 Operating conditions When the outdoor air temperature TH2 is 4 C or lower continues for 30 seconds while the compressor command speed is other than 0 rps 2 Detail of operation The outdoor fan is stepped up by 2 speed step at each 20 seconds Upper limit 8th speed 3 Reset conditions When either of the following conditions is satisfied a The outdoor air temperature TH2 is 6 C or higher b compressor command speed 15 0 rps Refrigeration cycle system protection i Starting conditions 1 When 5 minutes have elapsed after the compressor ON or the completion of the defrost control 2 Other than the defrost control 3 When after meeting the conditions of 1 and 2 above the compressor speed indoor temperature Th1 and in door heat exchanger temperature Th2 have met the conditions in the following table for 5 minutes Operation mode Compressor speed N Indoor temperature Th1 rain iu UM M Th2 X Cooling 10 ThI 4
25. DC several 4 7V DC308 336V GND DCI5V Fan motor resistance check Measuring point Resistance when normal Notes 1 Remove the fan motor and measure it without power connected to it 6 Red Black 20 MQ or higher 2 If the measured value is below the value when the motor is normal it means that the fan motor is faulty 3 White Black 20 k 2 or higher 13 SRK T 146 11 OPTION PARTS 1 Wired remote control RC E5 Read together with indoor unit s installation manual WARNING Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the terminal Loose connection or hold will cause abnormal heat generation or fire Make sure the power supply is turned off when electric wiring work Otherwise electric shock malfunction and improper running may occur NCAUTION Q DO NOT install the remote control at the following places in order to avoid malfunction 1 Places exposed to direct sunlight 4 Hot surface or cold surface enough to generate condensation 2 Places near heat devices 5 Places exposed to oil mist or steam directly 3 High humidity places 6 Uneven surface NOT leave the remote control without the upper case In case the upper cace needs to be detached protect the remote control with a packaging box or bag in S order to keep it away from water and dust Remote control wood screw 03 5x16 2 pieces P
26. ECONOMY operation will be canceled D When the HI POWER ECONO button is pressed again 2 When the operation mode is changed DRY to FAN 3 When the NIGHT SETBACK botton is pressed c Not operable while the air conditioner is OFF d The setting temperature is adjusted according to the following table Cooling Heating 0 0 5 D 1 0 D at the start of operation s j 1 0 20 220 2 hour after the start of operation 3 1 5 3 two hours after the start of operation 8 Flap and louver control 13 e SRK T 146 Control the flap and louver by AIRFLOW 4 UP DOWN and 4 gt LEFT RIGHT button on the wireless remote control a Flap Flap stopped A e Angle of Flap from Horizontal Each time when you press the AIRFLOW amp UP DOWN button the mode changes as follows d A Swing Remote control display am Al j C Al COOL DRY FAN Approx 5 Approx 20 Approx 35 Approx 45 Approx 60 HEAT Approx 20 Approx 35 Approx 45 Approx 60 Approx 75 b Louver Each time when you press the AIRFLOW 4 LEFT RIGHT button the mode changes as follows 4 4 4 AoA A Louver stopped 4848 4 4 V v Swing Spot Wide Angle of Louver Remote control display 4 4 4 V V Center installation Left Approx 50 Left Approx 20 Center Right Approx 20 Right Approx 50
27. Select the lower limit value with temperature setting button Indication example LOWER 24 C V blinking 3 Press SET button to fix Indication for example LOWER 24 Displayed for two seconds After the fixed lower limit value displayed for two seconds the indication will return to LOWER LIMIT Y 8 Press ON OFF button to finish eo Itis possible to finish by pressing TEMP RANGE a 6 0 ON OFF button on the way but Gye EINE ON OFF unfinished change of setting is unavailable During setting if you press RESET button you return to the previous screen 2 4 Previous button The functional setting The initial function setting for typical using is performed automatically by the indoor unit connected when remote control and indoor unit are connected As long as they are used in a typical manner there wiil be no need to change the initial settings If you would like to change the initial setting marked O set your desired setting as for the selected item The procedure of functional setting is shown as the following diagram Flow Start Finalize Reset Select End of function setting Stop air conditioner and press O SET and Record and keep the C 2 MODE buttons at the same time for over three seconds setting Press SET button Press _ Z RESET button Press LA V button Press ON OFF but
28. and lead to heat generation and fire Use the original accessories and specified components for installation If the parts other than those prescribed by us are used it may cause an electric shock fire and sersonal injury Connecting the indoor unit s connection cable to the interface Wiring inlet top or back Fix the cable withthe top Remove the upper case of the interface cable clamp Remove 2 screws from the interface casing before removal of upper casing 2 Connect the indoor unit s connection cable to the interface Connect the connector of the indoor unit connection cable to the connector on the interface s circuit board S Fix the indoor unit s connection cable with the cable clamp Cable can be brought in from the top or from the back Cut out the punch outs for the connection cables running into the casing with cutter 4 Connect the indoor unit s connection cable to the indoor control PCB Connect the indoor unit s connection cable to the indoor control PCB securely Remove e Clamp the connection cable to the indoor control box securely with the cable clamp the upper provided as an accessory case Regarding the cable connection to the indoor unit refer to the instruction manual for indoor unit Name of each part of the interface Connect the indoor unit s connection cable Clamp for clamping indoor ROM terminal unit s connection cable Interface board DIP switch SW2 Factory
29. hot surfaces or high voltage parts can cause personal injury due to entrapment burn or electric shocks inspection or servicing If the power supply is not shut off there is a risk of electric shocks unit failure or personal injury due to the unexpected start of fan e Stop the compressor before removing the pipe after shutting the service valve on pump down work If the pipe is removed when the compressor is in operation with the service valve open air would be mixed in the refrigeration circuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle e Only use prescribed optional parts The installation must be carried out by the qualified installer If you install the system by yourself it can cause serious trouble such as water leaks electric shocks fire e Be sure to wear protective goggles and gloves while at work e Earth leakage breaker must be installed If the earth leakage breaker is not installed it can cause electric shocks Do not perform any change of protective device itself or its setup condition The forced operation by short circuiting protective device of pressure switch and temperature controller or the use of non specified component can cause fire or burst 9v L L MHS F N CAUTION e Carry out the electrical work for ground lead with care Do not connect the ground lead to the gas line water line lightning conductor or telephone lines gro
30. x a ae FAN REMAINING FAM 4116 x FAN INTERMITTENCE PRESSURE CONTROL Connected OA Processing type indoor unit and is automatically defined How to set function 1 Stop air conditioner and press SET x J MODE buttons at the same time for over three seconds and the FUNCTION SET Y will be displayed FUNCTION SET Y 2 Press O SET button Make sure which do you want to set E FUNCTION V remote control function or I U FUNCTION A indoor unit function 4 Press A or Y button Selecct E FUNCTION Y remote control function I U FUNCTION A indoor unit function E FUNCTION Y DIA FUNCTION 6 Onthe occasion of remote control function selection DATA LOADING Indication with blinking 4 Display is changed to 01 HEJA ESF SET 5 Press O SET button Press A Y button No and function are indicated by turns on the remote control function table then you can select from them For example AUTO RUN SET Press button The current setting of selected function is indicated for example AUTO RUN ON If 02 AUTO RUN SET is selected AUTO RUN Press A or button Select the setting AUTO RUM ue AUTO RUN Press _O_ SET SET COMPLETE will be indicated and the setting will be completed Then after No and fu
31. 25m or less 15m or less Indoor unit Marks appearing in the drawing on the right indoor and outdoor units When the outdoor unit is positioned lower 10m or less 15m or less Outdoor unit NCAUTION The use restrictions appearing in the table above are applicable to the standard pipe size combinations shown in the table below 2 Determination of pipe size Determine refrigerant pipe size pursuant to the following guidelines based on Model SRC50 DXC18 the indoor unit specifications Gas pipe Model SRC20 35 DXC09 12 Liquid pipe Gas pipe Liquid pipe 99 52 Outdoor unit connected Flare Refrigerant piping branch pipe L 96 35 Flare 012 7 Flare 96 35 Flare Indoor unit connected 3 Refrigerant pipe wall thickness and material Select refrigerant pipes of the table shown on the right wall thickness and material as specified for each pipe size UE Select pipes having a wall thickness larger than the specified minimum pipe thickness 4 On site piping work About brazing Brazing must be performed under a nitrogen gas flow Without nitrogen gas a large quantity of foreign matters oxidized film are created causing a critical failure from capillary tube or expansion valve clogging When pipe is brazing Pipe diameter mm 96 35 99 52 Primary side Secondary side Only use nitrogen gas Nz Brazing Minimum pipe wall
32. 27 19 C and outdoor temperature Tj outdoor temperature Tj Tj 35 C Tj 35 C Tj 30 C Tj 30 C Tj 25 C Tj 25 C Tj 20 C Declared capacity for heating Average season at indoor Declared coefficient of performance Average season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Tj 7 C Pdh 2 92 COPd Tj 2 C Pdh j COPd Tj 7 C Pdh COPd Tj 12 C Pdh j COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd A N e Declared capacity for heating Warmer season at indoor Declared coefficient of performance Warmer season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Tj 2 C Pdh Tj 2 C COPd Tj 7 C Pdh Tj 7 C COPd Tj 12 C Pdh Tj 12 C COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Declared capacity for heating Colder season at indoor Declared coefficient of performance Colder season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Pdh COPd Pdh j COPd Pdh COPd Pdh j COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Tj 15 C Pdh Tj 15 C COPd Bivalent temperature Operating limit temperature heating Average heating Average heating Warmer heating
33. 40 C Install the device at the location where the ambient temperature stays within the range If it exceeds the specification make sure to provide solution such as installing a cooling fan When used 6 Installation outside of the range it may cause abnormal operation 1 When using the metal box mounted on the indoor unit mounted on the back of the remote control Indicator display 1 Mount the SL E board in the metal box using the locking supports 2 Wiring should go through the provided grommet since then through the Check the LED 3 green and LED 2 red on the SL E board for flashing wiring to the hole on the Metal box Secure the grommet after inserting the grommet into the Metal box as SL E board LEDs Display on the shown in below figure then tie the wiring at the outlet of the unit using a Inspection mode integrated network binding band Red Green control device Off Flashing Normal communication Disconnection in the remote control No communication line X or Y corresponding e Short circuit in the remote control unit number Off Off communication line between X and Y e Faulty indoor unit remote control power Locking suport 4 e Faulty remote control communication circuit e Faulty CPU on SL E board A When installed outside the indoor unit put the metal cover on Disconnection in the Super Link signal line A or B One flash Flashing Short circuit in the Super Link signal line between A and B
34. Allowed OFF ON Operation permission ON OFF Operation prohibition OFF Not allowed OFF Pulse input ON OFF Allowed DUE tt i ON OFF Operation prohibition OFF Notatlowed Factory setting Connection of super link E board Regarding the connection of super link E board refer to the instruction manual of super link E board For electrical work power supply for all of units in the super link system must be turned OFF Switch ON the DIP switch SW2 2 Factory setting ON on the interface PCB DIP switch Caution Wireless remote control attached to the indoor unit can be used in parallel after SW2 2 connecting the wired remote control However some of functions other than the basic functions such as RUN STOP Temperature Setting etc may not work properly and may have a mismatch between the display and the actual behavior 0000 2 Wiring connection between interface and the super link E board ee ons Names of recommended signal wires Shielded wire Termi can i Vinyl cabtyre round cord ock for blocks Super link oda Vinyl cabtyre round cable Iterface E board Vinyl insulated wirevinyl sheathed cable for control Within 200m 0 5 mm x 2 cores Within 300 m 0 75 mm x 2 cores Within 400 m 1 25 mm x 2 cores Within 600m 2 0 mm x 2 cores S Clamp the connection cables with cable clamps 13 e SRK T 146 Connection of wired remote control Regarding the connection of wired remote cont
35. At the same time a mark or a number will be displayed for two seconds first This is the software s administration number of the remote control not an error cord Hb BHL The left mark is only an CHWAL T example Other marks appear When remote control cannot communicate with the indoor unit for half an hour the below indication will appear Check wiring of the indoor unit and the outdoor unit etc INSPECT LU 13 e SRK T 146 The range of temperature setting When shipped the range of set temperature differs depending on the operation mode as below Heating 16 30 55 86 F Except heating cooling fan dry automatic 18 30 C 62 86 F Upper limit and lower limit of set temperature can be changed with remote control Upper limit setting valid during heating operation Possible to set in the range of 20 to 30 C 68 to 86 F Lower limit setting valid except heating automatic cooling fan dry Possible to set in the range of 18 to 26 C 62 to 79 F When you set upper and lower limit by this function control as below 1 When 2 TEMP RANGE SET remote control function of function setting mode is INDN CHANGE factory setting If upper limit value is set During heating you cannot set the value exceeding the upper limit If lower limit value is set During operation mode except heating you cannot set the value below the lower limit 2 When 2 TEMP RANGE SET remote control function
36. C Notes 1 When the discharge pipe temperature is in the range of 100 110 C the speed is reduced by 4 rps 2 When the discharge pipe temperature is raised and continues operation for 20 seconds without changing then the speed is reduced again by 4 rps 3 Ifthe discharge pipe temperature is in the range of 90 100 C even when the compressor command speed is maintained for 3 minutes when the temperature is in the range of 90 100 C the speed is raised by 1 rps and kept at that speed for 3 minutes This process is repeated until the command speed is reached 4 Lower limit speed Heating Lower Limit Speed 30 rps 2 Ifthe temperature of 110 C is detected by the sensor on the discharge pipe then the compressor will stop immedi ately When the discharge pipe temperature drops and the time delay of 3 minutes is over the unit starts again within 1 hour but there is no start at the third time Current safe i Purpose Current is controlled not to exceed the upper limit of the setting operation current ii Detail of operation Input current to the converter is monitored with the current sensor fixed on the printed circuit board of the outdoor unit and if the operation current value reaches the limiting current value the compressor command speed is reduced If the mechanism is actuated when the compressor command speed is less than 30 rps the com pressor is stopped immediately Operation starts again after a delay time of 3 minu
37. Cover the exterior portion with outer tape and Earth wiring shape the piping so it will match the contours Outer tape of the route that the piping to take Drain hose Also fix the wiring and pipings to the wall with lt Wood screw clamps Clamp Set iios d 9v L L MHS e El CC E L ECT R L WI R WO The screw of the service panel is tightened securely 1 Preparation of indoor unit A CAUTION In case of faulty wiring connection the indoor unit stops and then 1 Open the air inlet panel and remove the air filters Service panel 2 Install the air cleaning filter in the filter holders and then install the filter holders in the air conditioner Each air cleaning filter can be installed in the left or right filter holder the run lamp turns on and the timer lamp blinks 3 Install the air filters and close the inlet panel Terminal block Mounting of connecting wires f CD Open the air inlet panel Use cables for interconnection wiring to avoid loosening of the wires 2 Remove the service panel CENELEC code for cables Required field cables Remove the wiring clamp 4 Connect the connecting wire securely to the terminal block HO5RNR4G1 5 example or 245IEC57 m 3
38. End Installation AIR FLOW U D 7 A v e O O CLEAN TIMESETUP ACL 13 SRK T 146 Airflow range Airflow range Airflow range Left End Installation Center Installation Right End Installation iv Press the ON OFF button The air conditioner s installation location is set Press within 60 seconds of setting the installation location while the installation location setting display illuminates 14 Outline of heating operation a Operation of major functional components in heating mode Heating Thermostat ON Thermostat OFF Failure Indoor fan motor ON HOT KEEP OFF OFF OFF b Details of control at each operation mode pattern i Fuzzy operation Deviation between the indoor temperature setting correction temperature and the return air temperature is calculated in accordance with the fuzzy rule and used for control of the air capacity and the compressor speed SRK20ZMX S SRK25ZMX S SRK35ZMX S Fan speed When the defrosting protection device etc is actuated operation is performed in the corresponding mode i Hot keep operation If the hot keep operation is selected during the heating operation the indoor blower is controlled based on the tem perature of the indoor heat exchanger Th2 to prevent blowing of cool w
39. Flare B Service valve connection liquid side 6 35 174 Flare C Pm widmoihb TL D A LL CD XL Zt de A Z T 7 ee Terminal block 1 It must not be surrounded by walls on the four sides 2 The unit must be fixed with anchor bolts An anchor bolt must not protrude more than 15mm 3 Where the unit is subject to strong winds lay it in such a direction that the blower outlet faces perpendicularly to the dominant wind direction 4 Leave 1m or more space above the unit 5 A wall in front of the blower outlet must not exceed the units height 6 The model name label is attached on the lower right corner of the front panel Service space Minimum installation space Examples of installation IV Open 280 280 180 10 80 80 80 Unitmm VS XINZSE WS XINZSZ VS XINZOCOHS SI PON 4oopino 9v L L MHS 13 e SRK T 146 3 Remote control a Wireless remote control Unit mm ate MITSUBISHI HEAVY INDUSTRIES LTD b Wired remote control option parts 13 SRK T 146 Interface SC BIKN E is required to use the wired remote control Exposed mounting 2 cores In case of pulling out In case of pulling out from center from upper left Pearl White N8 5 near equivalent Exterior appearance Mun
40. Grommet To be procured on the installer s part To be procured on the installer s part Condensed water may flow out from vicinity of service valve or connected pipes 4 ELECTRICAL WIRING WORK For details of electrical cabling refer to the indoor unit installation manual QC Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical installations in the country Do not use any supply cord lighter than one specified in parentheses for each type below braided cord code designation 60245 IEC 51 ordinary tough rubber sheathed cord code designation 60245 IEC 53 flat twin tinsel cord code designation 60227 IEC 41 Use polychloroprene sheathed flexible cord code designation 60245 IEC57 for supply cords of parts of appliances for outdoor use e Ground the unit Do not connect the grounding wire to a gas pipe water pipe lightning rod or telephone grounding wire If improperly grounded an electric shock or malfunction may result e A grounding wire must be connected before connecting the power cable Provide a grounding wire longer than the power cable The ins
41. HIGH SPEED 4 speed is not able to be set with wireless remote control INDICATION OFF The filter sign is indicated after running for 180 hours TYPE The filter sign is indicated after running for 600 hours TYPES The filter sign is indicated after running for 1000 hours The filter sign is indicated after running for 1000 hours then the indoor unit will be stopped by compulsion after 24 hours If you change the indoor function 04 POSITION you must change the remote control function 14 gt POSITION accordingly You can select the louver stop position in the four The louver can stop at any position FILTER SIGN SET POSITION 4POSITIONSTUF FREE STOP EXTERNAL TRPLIT LEVEL INPUT O PULSE INPUT EN LO OPERATION PERNISSION PROMITTION INVALID VALID Permission prohibition control of operation will be valid INVALID VALID _ With the VRF series it is used to stop all indoor units connected with the same outdoor unit immediately When stop signal is inputed from remote on off terminal CNT 6 all indoor units are stopped immediately EMERGENGY STOP OFFSET 3 06 To be reset for producing 3 0 C increase in temperature during heating OFFSET 2 06 C To be reset for producing 2 0 C increase in temperature during heating OFFSET 105 C Toberesetfor producing 1 0 C increase in temperature during he
42. SRK T 146 ii Discharge pipe sensor temperature Units C TIMER light 1 s digit RUN light 10 s digit Buzzer sound 62 64 Yes S sounds for 0 1 second 1 2022 24 26 28 30 32 34 36 38 0 2 4 19 22 414 16 9 pepe i pie fis 3 7 16 does notsound 4 so so s se ss 94 9e Sa 1 2 124 138 130 132 134 36 s f no data are recorded error code is normal the display for each temperature information becomes as shown below Sensor value displayed when the error code 15 normal Discharge pipe sensor Example Discharge pipe temperature data 122 C n the case of discharge pipe data multiply the reading value by 2 Below 61 x 2 122 0 1 sec ON If the temperature is 0 the buzzer sounds Buzzer sound If the temperature 1520 the buzzer does not sound OFF 1 5 sec ON RUN light 10 s digit OFF ON TIMER light 1 s digit OFF 11 second interval 13 SRK T 146 Service data record form Customer Model Date of investigation Machine name Content of complaint Display results Display content Buzzer Yes No RUN light Times TIMER light Times Wireless remote control settings Content of displayed data Temperature setting Operation mode Fan
43. SRK20ZMX S Outdoor unit SRC20ZMX SA mE Single phase 220 240V 50Hz Nominal cooling capacity range 2 0 0 9 Min 3 1 Max Nominal heating capacity range 2 5 0 9 Min 4 3 Max Power 0 35 0 19 0 70 consumption 0 45 0 23 1 00 Max power consumption 1 65 Running 1 9 1 8 1 7 220 230 240 V A Power source current 2 4 2 3 2 2 220 230 240 V nrush current max current 2 4 2 3 2 2 220 230 240 V Max 8 Operation 85 data Power factor 96 571 COP 5 56 Silent mode sound pressure leve Geoig40 Heaingd2 595 x 780 62 x 290 Munsell color 8 0Y 9 3 0 1 near equivalent 4 2Y 7 5 1 1 near equivalent 13 5 35 5 Compressortype amp ay lt RM BS077MDET Rotaytype X1 Compressor motor Starting method KW 075 1 Refrigerant Amount type 4 0 35 DIAMOND FREEZE MA68 Heat exchanger Louverfins amp innergroovedtubing Mfins amp innergroovedtubing Refrigerant control Capilaytibes Elotonioexpansonvave Fantype amp a y Tangeniafanxi Propeller fan x 1 Fan motor Starting method 30 x1 Direct drive 24 x1 Direct drive m m min 115 80 Lo 6 8 ULo 5 0 29 5 12 0 Me 9 5 Lo 7 0 ULo 6 3 27 0 Available external static pressure Pa 0 Out
44. affect the system and cause malfunctions and breakdowns The system can also affect medical equipment and telecommunication equipment and obstruct its function or cause jamming Do not place any variables which will be damaged by getting wet under the indoor unit When the relative humidity is higher than 8096 or drainage pipe is clogged condensation or drainage water can drop and it can cause the damage of valuables Do not install the wireless remote control at the direct sunlight It can cause malfunction or deformation of the wireless remote control Do not use the unit for special purposes such as storing foods cooling precision instruments and preservation of animals plants or art It can cause the damage of the items Do not use any materials other than a fuse with the correct rating in the location where fuses are to be used Connecting the circuit with copper wire or other metal thread can cause unit failure and fire Do not touch any buttons with wet hands It can cause electric shocks Do not touch any refrigerant pipes with your hands when the system is in operation During operation the refrigerant pipes become extremely hot or extremely cold depending the operating condition and it can cause burn injury or frost injury 9v L L MHS 0C BEFORE INSTALLATION O Before installation check that the power supply matches the air conditioner Standard accessories Installation kit Accessorie
45. be indicated and the setting will be completed Then after No and function indication returns set as the same procedure if you want to set continuously and if to finish go to 7 When plural indoor units are connected to a remote control press the AIRCON NO button which allows you to go back to the indoor unit selection screen example 000 A t is possible to finish by pressing ON OFF button on the way but unfinished change of setting is unavailable During setting if you press Z RESET button you return to the previous screen Setting is memorized in the control and it is saved independently of power failure How to check the current setting When you select from No and funcion and press set button by the previous operation the Setting displayed first is the current setting But if you select ALL UNIT Y the setting of the lowest number indoor unit is displayed 13 SRK T 146 2 Interface kit SC BIKN E RKZO 1 2A088B Accessories included in package Be sure to check all the accessories included in package No Partname anti FON Indoor unit s connection cable cable length 1 8m ET _ Wood screws for mounting the interface x25 2 _ rte cabl clump enter noing ake 3 _ Interface mounting bracket 1 Cable clamp for the indoor unit s connection cable SC BIKN EA only Before use pleas
46. by dropping the outdoor fan tap and the compressor command speed Outdoor fan tap Upper limit Compressor command speed Upper limit SRK35ZMX S Cooling Heating SRK20ZMX S SRK25ZMX S Cooling Heating Cooling Heating Ath speed 4th speed 4th speed 4th speed 5th speed 4th speed 12 Night setback As Night setback signal is received from the wireless remote control the heating operation starts with the setting temperature at 10C 13 Installation location setting When the indoor unit is installed at the end of a room control the air flow direction so that it is not toward the side walls If you set the wireless remote control installation position keep it so that the air flow 15 within the range shown in the following figure a Setting i ii iii If the air conditioning unit is running press the ON OFF button to stop The installation location setting cannot be made while the unit is running Press the AIR FLOW gt UP DOWN button and the AIRFLOW 4 LEFT RIGHT button together for 5 seconds or more The installation location display illuminates Setting the air conditioning installation location Press the AIR FLOW 4 LEFT RIGHT button and adjust to the desired location Each time the AIR FLOW 4 LEFT RIGHT button is pressed the indicator is switched in the order of Right End Installation Center Installation Left
47. connection Attached length of piping m Liquid line 0 55 Gas line 0 49 Insulation for piping mE Necessary Both sides independent data Refrigerant line one way length Vertical height diff between O U I U Max 10 Outdoor unit is higher Max 10 Outdoor unit is lower Drain hose Hose connectable VP 16 Holes 20 x 2 pcs Installation Drain pump max lift height Recommended breaker size Interconnecting wires SizexCorenumber 1 5mm x 4 cores Including earth cable Terminal block Screw fixing type Pamer C Standard accessories __ Mounting kit Clean filter Allergen clear filter x 1 Photocatalytic washable deodorizing filter x 1 ptonpats MefaektSC IKNE Note 1 The data are measured at the following conditions The pipe length is 7 5m Standards ISO5151 T1 Heating o6 76 6 2 This air conditioner is manufactured and tested in conformity with the ISO 3 Sound level indicates the value in an anechoic chamber During operation these values are somewhat higher due to ambient conditions 4 Select the breaker size according to the own national standard RWA000Z2524 13 SRK T 146 SRK35ZMX S Indoor unit SRK35ZMX S Outdoor unit SRC35ZMX SA mE Single phase 220 240V 50Hz Nominal cooling capacity range 3 5 0 9 Min 4 1 Max Nominal heating capacity range 4 3 0 9 Min 5 1
48. control 5 Wood screws HOW TO RELOCATE OR DISPOSE OF THE UNIT O In order to protect the environment be sure to pump down recovery of refrigerant Forced cooling operation O Pump down is the method of recovering refrigerant from the indoor unit to the Turn on a power supply again after a while after turn off a power supply outdoor unit when the pipes are removed from the unit Then press continually the ON OFF button 5 seconds or more How to pump down CD Connect charge hose to check joint of outdoor unit 2 Liquid side Close the liquid valve with hexagon wrench key Gas side Fully open the gas valve Carry out cooling operation If indoor temperature is low operate forced cooling operation 8 After low pressure gauge become 0 01MPa stop cooling operation and close the gas valve Unit ON OFF button INSTALLING TWO AIR CONDITIONERS IN THE SAME ROOM When two air conditioners are installed in the same room use this setting when the two air conditioners are not operated with one wireless remote control Set the wireless remote control and indoor unit Setting the wireless remote control Setting an indoor unit CD Pull out the cover and take out batteries CD Turn off the power supply and turn it on after 1 minute 2 Disconnect the 2 Point the wireless remote control that was set according to the switching line next FN procedure described
49. heat exchanger temperature is in the range of 2 5 5 C the speed is reduced by 4 rps at each 20 seconds 2 When the temperature is lower than 2 5 C the compressor is stopped 3 When the indoor heat exchanger temperature is in the range of 5 8 C the compressor command speed is been maintained iii Reset conditions When either of the following condition is satisfied 1 The indoor heat exchanger temperature Th2 is 8 C or higher 2 compressor command speed is 0 rps Cooling overload protective control i Operating conditions When the outdoor air temperature TH2 has become continuously for 30 seconds at 41 C or more or 47 C or more with the compressor running the lower limit speed of compressor is brought up ON SRK20 35 NUES ii Detail of operation Outdoor air temperature C Outdoor air temperature Lower limit speed 1 The outdoor fan is stepped up by 3 speed step Upper limit 7th speed 2 Thelower limit of compressor command speed is set to 30 or 40 rps and even if the calculated result becomes lower than that after fuzzy calculation the speed is kept to 30 or 40 rps However when the thermo OFF the speed is reduced to 0 rps iii Reset conditions When either of the following condition is satisfied 1 The outdoor air temperature is lower than 40 C 2 compressor command speed 15 0 rps 13 e SRK T 146 c Cooling high pressure control i Purpose Pre
50. on the left side at the indoor unit to the battery with and send a signal by pressing the ACL switch on the wire cutters wireless remote control Since the signal is sent in about 6 seconds after the ACL switch is pressed point the wireless remote control at the indoor unit for some time 3 Check that the reception buzzer sound pip is emitted from the indoor unit At completion of the setting the indoor unit emits a buzzer sound 9 Insert batteries Close the cover pip If no reception tone is emitted start the setting from the beginning again e Disconnect CONCERNING TERMINAL CONNECTION FOR AN INTERFACE CD Remove the front panel and lid of control 2 Remove the control There is a terminal respectively marked with CNS for the indoor control board In connecting an interface connect to the respective terminal securely with the connection harness supplied with an optional Interface connection kit SC BIKN E and fasten the connection harness onto the indoor control box with the clamp supplied with the kit For more details please refer to the user s manual of your Interface connection kit SC BIKN E INSTALLATION TEST CHECK POINTS 4 ee After installation L The power supply voltage is correct as the rating _ Service valve is fully open Test run Air conditioning operation is normal The wireless remote contro
51. result in electric shock or fire Wiring should be securely connected using the specified types of wire No external force on the wire should be applied to any terminals If a secure connection is not achieved it may result in electric shock or fire 1 Where there is mist spray of oil or steam such as kitchens 2 Where there is corrosive gases such as sulfurous acid gas 3 Where there is a device generating electromagnetic waves These may interfere with the control system resulting in the device becoming uncontrollable 4 Where flammable volatile materials such as paint thinner and gasoline may exist or where they are handled This may cause a fire 1 Application 5 Connection Outline Indoor to outdoor three core communication specification type 3 since October 2007 2 Accessories SL E board Metal box Metal cover Screw for Ground Note for setting the address e Set the address between 00 and 47 for the previous Super Link connection and between 000 and 127 for the new Super Link connection 1 e Do not set the address overlapping with those of the other devices in the network The default is 000 M4x8L 2 pieces q Pan head screws Locking supports Binding band Grommet To secure the print board and 24 81 2 pieces the metal box Made of nylon p c 4 a lt 3 Function Allowing the center console SL1N E SL2N E and SL3N AE BE to c
52. setting all ON Terminal for indoor unit s DIP switch SW3 Factory setting all OFF connection cable Terminal block for wired remote control CNT terminal Rotary switch SW1 for address setting Terminal block for super link E board SC ADNA E Clamp for clamping the connection cable for super link E board SC ADNA E Clamp for clamping the connection cable for wired remote control Either the connection cables of super link E board SC ADNA E or of wired remote control is connectable Setting Setting SW2 1 CNT level input SW2 3 External input CNT input CNT Pulse input Operation permission prohibition CNT input SW2 2 Wired remote control Enable SW2 A Annual cooling Enable Wired remote control Disable Factory setting Annual cooling Disable Indoor fan control at low outdoor air temperature in cooling 13 SRK T 146 Installation of the interface nstall the interface within the range of the connection cable length from the indoor unit approximately 1 8m Be sure not to extend the connection cable on site If the connection Wiring inlet cable is extended malfunction may occur Fix the interface on the wall pillar or the like NOT install the interface and wired remote control at the following places OPlaces exposed to direct sunlight OPlaces near heating devices OHigh humidity places OSurfaces where are enough hot or c
53. the rear left left rear left downward right or downward direction 3 Insert the drain cap 4 Connect the drain hose piping and fix direction that goes through the before stretching it and wall shaping it Always tape the wiring Right iu with the piping Sufficient care must be taken not to damage the panel when connecting pipes Rear Lett O Insert the drain cap which was removed O Insert the drain hose securely making Down at procedure 2 securely using a rotate And install the screw ownward raar Left hexagonal wrench etc Note Be careful that If it is not inserted Left downward Note Be careful that If it is not inserted securely water leakage may occur securely water leakage may occur 9v L L M8HS El Fixing of indoor unit l Indoor unitl Installation Steps Latch CD Pass the pipe through 2 locations the hole in the wall and hook the upper T part of the indoor unit to the installation board a 2 Gently push the lower part to secure the unit Installation borad Indoor unit base lower latch CONNECTION OF REFRIGERANT PIPINGS Preparation Keep the openings of the pipes covered with tapes etc to prevent dust sand etc from entering them How to remove the indoor unit from the installation board CD Push up at the marked portion of the indoor unit base lower latch and slightly pull it toward you both right and left hand sides The indoor
54. thickness mm 0 8 0 8 0 8 Pipe material O type pipe O type pipe O type pipe Phosphorus deoxidized seamless copper pipe ICS 23 040 15 ICS 77 150 30 A IMPORTANT Take care so that installed pipes may not touch components within a unit If touching with an internal component it will generate abnormal sounds and or vibrations Please remove the screw of a side cover and How to remove the side cover anova long uni Carry out the on site piping work with the service valve fully closed Give sufficient protection to a pipe end compressed and blazed or with an adhesive tape so that water or foreign matters may not enter the piping e Bend a pipe to a radius as large as practical R100 R150 Do not bend a pipe repeatedly to correct its form Hare connection is used between the unit and refrigerant pipe Flare a pipe after engaging a flare nut onto it Flare dimensions for R410A are different from those for conventional R407C Although we recommend the use of flaring tools designed specifically for RA10A conventional flaring tools can also be used by adjusting the measurement of protrusion B with a protrusion control gauge The pipe should be anchored every 1 5m or less to isolate the vibration Tighten a flare joint securely 77 Th ee E AN CAUTION Do not apply force beyond proper fastening torque in tightening the flare nut Fix both liquid and gas servic
55. to obtain the cooling and heating capacity Example The net cooling capacity of the model SRK35ZMX S with the piping length of 15m indoor wet bulb temperature at 19 0 C and outdoor dry bulb temperature 35 C is Net cooling capacity 3 5 x 0 975 x 1 0 3 4 kW SRK35ZMX S Length 15m Factor by air temperatures 13 SRK T 146 7 CAPACITY TABLES Model SRK20ZMX S Cooling Mode kW Heating Mode HC kW Indoor air temp artemp 14 cwB 18 CWB 24 CWB 16 CDB 2 09 2 41 2 22 2 29 2 65 2 24 1 89 1 94 1 85 2 05 1 95 2 18 2 07 2 23 2 47 2 18 3 18 1 90 1 80 2 01 1 91 2 14 2 03 2 35 2 21 2 43 2 18 ar hm Air flow 36 2 11 2 32 217 206 2 28 16 2 13 2 02 2 24 1 98 2 19 1 94 2 45 2 02 1 86 2 09 2 05 1 9 1 85 1 75 1 96 9 2 05 2 20 19 2 16 1 79 90 94 2 16 2 45 1 60 1 80 1 85 1 97 2 08 2 13 1 83 1 94 2 06 2 12 81 1 92 2 04 24 1 50 1 68 1 6 1 88 2 00 2 09 1 47 1 66 1 4 1 85 1 98 2 07 Model SRK25ZMX S Cooling Mode kw Heating Mode HC kW Indoor air temp Outdoor 21 CDB 23 CDB SHC 209 207 205 2 08 2 02 2 00 1 96 B l k 1 76 2 00 1 1 O 95 93 O 1 68 k 90 1 4 o k O N N 1 Co N 236 2 32 228 224 2 19 215 230
56. unit base lower latch can be removed from the installation board 2 Push up the indoor unit upward So the indoor unit will be removed from the installation board RKYO12A011 r Drainage Since this air conditioner has been designed to collect dew drops on the rear surface to the drain pan do not attach the power cord above the gutter O Arrange the drain hose in a downward angle O Avoid the following drain piping 6 The marked portion of the indoorunit base lower latch Connection Indoor Liquid side Gas side Do not turn Dimension A Liquid side 96 35 9 1 mm Gas side 9 52 13 2 mm 012 7 16 6 mm Press J Remove A CAUTION Do not apply refrigerating machine oil to the flared surface Do not turn O Connect the pipes on both liquid and gas sides Install the removed flared nuts to the pipes to be connected then flared the pipes O Remove the flared nuts on both liquid and gas sides Flaring work Measurement B mm Copper pipe diameter Clutch type flare tool for Conventional R22 flare tool Measurement B R410A Clutch type Wing nut type 96 35 0 0 0 5 1 0 1 5 1 5 2 0 Flaring 99 52 0 0 0 5 1 0 1 5 1 5 2 0 012 7 0 0 0 5 1 0 1 5 2 0 2 5 Use a flare tool designed for R410A or a conventional flare tool Please note that measurement B protrusion from the flaring blo
57. unit of this air conditioner is equipped with a terminal block for DRED input and supports ELV Extra Low Voltage complying with AS NZS60335 1 A CAUTION In case of faulty wiring connection the indoor unit stops and then the run lamp turns on and the timer lamp blinks Use cables for interconnection wiring to avoid loosening of the wires CENELEC code for cables Required field cables HOSRNR4G1 5 Example or 2451EC57 05 Harmonized cable type 300 500 volts Natural and or synth rubber wire insulation Polychloroprene rubber conductors insulation Stranded core Number of conductors One conductor of the cable is the earth conductor yellow green Section of copper wire mm 9v L L M8HS L 6C Power cable indoor outdoor connecting wire circuit diagram Power supply terminal block WIE E e t holds cables in place and protect the terminal connection from external force This clamp is for the cable in the outside diameter 9 15mm Please adjust it when not suitable Cable name plate It has stuck on the lid of a control box PIPPI LITT e Please be sure to carry out D type type 111 grounding work Power cable indoor outdoor connecting wires Model SRC ZM S SA Model SRC ZMA S Model DXC ZMA S Model SRC ZMX S SA Model SRC ZMXA S Outdoor unit L 1 fn 3 G Outdoor unit L 1 2 N
58. 0 Th1 4 Th2 Heating 0 Th1 40 Th2 lt Th1 6 Notes 1 Except that the fan speed is HI in heating operation ii Contents of control 1 When the conditions of 1 above are met the compressor stops 2 Error stop occurs when the compressor has stopped 3 times within 60 minutes iii Resetting condition When the compressor has been turned OFF 19 Defrost heater control a b Starting conditions When all of the following conditions 1 iv have been met for 1 minute continuously with the compressor frequency at 0 rps or higher 1 Operation is in the heating mode Outdoor heat exchanger sensor TH1 temperature is lower than 2 0 C Outdoor air temperature sensor TH2 temperature is lower than 0 C iv Outdoor air temperature at 0 C Difference between the outdoor air temperature and the outdoor heat exchanger sensor temperature is larger than 4 C Outdoor air temperature higher than 5 C and lower than 0 C Difference between the outdoor air temperature and the outdoor heat exchanger sensor temperature is larger than Outdoor air temperature higher than 10 and lower than 5 C Difference between the outdoor air temperature and the outdoor heat exchanger sensor temperature 15 larger than 0 C Outdoor air temperature higher than 15 C and lower than 10 C Difference between the outdoor air temperature and the outdoor heat exchanger sensor temperature is larger than 5 C Outdoor air temper
59. 100m change to the size below But wiring in the remote control case should be under 0 5mm Change the wire size outside of the case according to wire connecting Waterproof treatment is necessary at the wire connecting section Be careful about contact failure 100 200m eee 0 5mm x 2 cores Under 300M eesse 0 75mm x 2 cores Under 400M esses rrr nea 1 25mm2 x 2 cores Under 600m 2 Omm x 2 cores Master slave setting when more than one remote controls are used A maximum of two remote controls can be connected to one indoor unit or one group of indoor units Setting M Master remote control SW1 m H Slave remote control l l Remote control 1 Remote control I l Upper 1 Master SW1 Master SW1 Slave Slave ee ee eee eee ar WR m rae SWI1 Lower Set SW1 to Slave for the slave remote control It was factory set to Master for shipment Note The setting Remote control thermistor enabled is only selectable with the master remote control in the position where you want to check room temperature The air conditioner operation follows the last operation of the remote control regardless of the master slave setting of it The indication when power source is supplied When power source is turned on the following is displayed on the remote control until the communication between the remote control and indoor unit settled Master remote control Tet Slave remote control WAT E
60. 146 To next page To next page From previous page Indoor unit function 1 0 FUNCTION 4 plural indoor units are connected From previous page 13 e SRK T 146 Note 1 The initial setting marked x is decided by connected indoor and outdoor unit and is automatically defined as following table FuncionNo Remote control AUTO RUN SET function02 Indoor unit without Auto RUN mode Remote control E FAN SPEED SW function06 Remote control LOUVER SU function07 Remote control I U FAN function13 HM MODEL Heat pump unit function15 Exclusive cooling unit Note 3 As for plural indoor unit set indoor functions to each master and slave indoor unit But only master indoor unit is received the setting change of indoor unit function 05 EXTERNAL INPUT and 06 PERMISSION PROHIBISHION Note2 Fan setting of HIGH SPEED Indoor unit No are indicated only when Indoor unit air flow setting 171004 To set other indoor unit press AIRCON NO button which allows you to go back to the indoor unit selection screen for example 1 0 000 A Fant Stud Stand Saal Sand Saal Hac Shan Sean Function setting FAN STANDARD UH Hi Me Lo Hi Me Lo Hi Lo Hi Me FEN SPEED SET UH UH Hi Me UH Hi Me UH Me HIGH SPEED 2 MN Initial function setting of some indoor unit is
61. 2 BUS 000000909 GACHO 2 52x3 ZI Seen ores iib de o i 0 Al ft 22 9 oY 9 NW A R N N G 9o 3 one E 20 2 sige 52x5 99 aor o D FA 0 90 0 9 CAUTION 000 cog oz 2 RR HAS M prm n ei fao om ARE r gn mo gu is z 1 ELECTR z 295 5 OO T10 CNTH THI TH2 TH3 Inspection of outdoor fan motor Inspection of electronic Inspection power transistor See page 66 expansion valve Remove the fasten terminal and test See page 66 output voltage P Inspection of resistance valve of sensor Remove the connector and check the resistance valve See the section of sensor characteristics on page 57 13 SRK T 146 a Inspection of electronic expansion valve Electronic expansion valve operates for approx 10 seconds after the power on in order to determine its aperture Check the operating sound and voltage during the period of time Voltage cannot be checked during operation in which only the aperture change occurs 1 If it is heard the sound of operating electronic expansion valve it is almost normal 11 If the operating sound is not heard check the output voltage 1 3 Expansion valve connector led 6P black 2 Approx DC 5 V is detected for 10 seconds after the power
62. 2 C lt Indoor temp Setting temp lt 5 Indoor temp Setting temp gt 5 C The control in 4 continues Control returns to the control in 2 Control returns to the control in 1 Heating b Setting temp Indoor temp 2 C 2 C lt Setting temp Indoor temp 5 C Setting temp Indoor temp gt 5 C The control in 4 continues During DRY Operation including auto DRY operation Control returns to the control in 2 Control returns to the control in 1 Flap Horizontal blowing Fixed Louver Wide Fixed 10 Timer operation a b c Comfortable timer setting ON timer 13 SRK T 146 If the timer is set at ON when the operation select switch is set at the cooling or heating or the cooling or heating in auto mode operation is selected the comfortable timer starts and determines the starting time of next operation based on the initial value of 15 minutes and the relationship between the indoor temperature at the setting time temperature of room tempera ture sensor and the setting temperature Sleep timer operation Pressing the SLEEP button causes the temperature to be controlled with respect to the set temperature OFF timer operation The Off timer can be set at a specific time in 10 minute units within a 24 hour period 11 Silent mode As Silent mode start signal is received from the wireless remote control it operates
63. 285 345 280 340 275 3 06 2 43 2 31 2 48 2 56 2 75 2 90 2 74 2 69 2 64 2 96 258 291 2 55 289 252 2 86 246 9 9 8 N NIO D2 O 27 ae 4 2 3E zs 224 2 49 2 37 2 67 2 53 2 75 2 60 2 81 2 75 3 06 2 70 E E 11 2 01 33 indoor air temp Air flow air temp 16 CDB 18 CDB 20 CDB 22 CDB 24 CDB 14 0 EIE sa s gt EE 3 80 3 40 3 99 3 36 sao ass mer as 3 22 3 19 3 81 3 91 3 38 3 35 4 17 s oe art ase aor 500 so EM Note 1 These data show average statuses 387 3 84 3 t ducted ti ly These data do Ri as the operation frequency of a compressor is 2 99 3 41 2 Capacities are based on the following conditions 322 358 918 9 46 9 Depending on the system control there may be ranges where the operation is 2 86 2 72 3 05 2 90 3 33 3 16 3 46 3 20 3 54 3 18 3 76 3 38 3 92 3 32 3 Symbols are as follows TC Total cooling capacity kW Corresponding refrigerant piping length 7m 6 8 APPLICATION DATA 1 Installation of indoor unit Models SRK20ZMX S 25ZMX S This installation manual illustrates the method of installing an indoor unit For electrical wiring work please see instructions set out on the back
64. 3 Ifthe jumper wire J170 AUTO RESTART is cut auto restart is disabled See the diagram at right 4 Installing two air conditioners in the same room When two air conditioners are installed in the room use setting when the two air conditioners are not operated with one wireless remote control Set the wireless remote control and indoor unit a Setting the wireless remote control 1 Pull out the cover and take out batteries 5 Disconnect the switching line next to the battery with wire cutters GS 11 Insert batteries Close the cover b Setting an indoor unit Disconnect i Turn off the power supply and turn it on after 1 minute Point the wireless remote control that was set according to the procedure described on the left side at the indoor unit and send a signal by pressing the ACL switch on the wireless remote control Since the signal is sent in about 6 seconds after the ACL switch 1s pressed point the wireless remote control at the indoor unit for some time 11 Check that the reception buzzer sound pip is emitted from the indoor unit At completion of the setting the indoor unit emits a buzzer sound pip If no reception tone is emitted start the setting from the beginning again 13 SRK T 146 5b Selection of the annual cooling function
65. 404 heating Warmer heating Warmer heating Colder heating Colder heating Average 10 C 224 heating Average 10 C heating Warmer 2 C heating Warmer 2 C heating Colder 22 C heating Colder 22 C Declared capacity for cooling at indoor temperature 27 19 C and Declared energy efficiency ratio at indoor temperature 27 19 C and outdoor temperature Tj outdoor temperature Tj Tj 35 C 2 00 Tj 35 C Tj 30 C i Tj 30 C Tj 25 C Tj 25 C Tj 20 C Declared capacity for heating Average season at indoor Declared coefficient of performance Average season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Tj 7 C Pdh j COPd Tj 2 C Pdh COPd Tj 7 C Pdh j COPd Tj 12 C Pdh COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Declared capacity for heating Warmer season at indoor Declared coefficient of performance Warmer season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Tj 2 C Pdh Tj 2 C COPd Tj 7 C Pdh Tj 7 C COPd Tj 12 C Pdh Tj 12 C COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Declared capacity for heating Colder season at indoor Declared coefficient of performance Colder season at indoor temperature 20 C and outdoor temperature T
66. 7 Refrigeration cycle system Service valve is closed When refrigeration cycle system protective control e flash protective control Refrigerant is insufficient operates 3 times 8 time Refrigerant is overcharge flash 58 Current safe Compressor lock When there is a current safe stop during operation Overload operation Compressor wiring is disconnected When the current is 1A or less at the time the Compressor wiring is unconnection Power transistor is damaged compressor started 59 Voltage drop Power supply construction is defective When the power supply voltage drops during operation Low speed protective control Outdoor PCB is faulty When the compressor command speed is 1ower than 32 Compressor is faulty rps for 60 minutes Compressor is faulty Compressor 13 open phase After the compressor starts when the compressor stops Rotor lock Electronic expansion valve is faulty dus totot r duck Overload operation Outdoor PCB is faulty nnection lin tween th P i gt Mint a i Connection lines are faulty bd 10 seconds passes after Sid is Indoor or outdoor are faulty without communications signals from the indoor or faulty outdoor unit being detected correctly ON Indoor or outdoor PCB are faulty When 7 minute 35 seconds passes without ON N Serial transmission error her icati i i i Noise is causing faulty operation communications signals from either the outdoor unit or
67. 9919 9v L L M8HS El I 2620000M TO INDOOR UNIT POWER WIRES SIGNAL WIRE I I I POWER SOURCE TERMINALI l 220 240V 50Hz 220V 60Hz E bee Soon ene eee 1 Power cable indoor outdoor connecting wires BK 2500154 BK NOISE FILTER 7 0 C2 L 5 1 6 25A 1 6 CN208 L J L J 20S q Model MAX running current Power cable size Power cable length indoor outdoor Earth wire size A mm m wire size x number mm2 8 ZMX 25 9 ZM 2 0 32 1 5mm2x 3 1 5 35 e Switchgear of Circuit breaker capacity which is calculated from along the regulations in each country The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 296 For an installation falling outside of these conditions please follow the internal cabling regulations Adapt it to the regulation in effect in each country MAX over current should be chosen PWB ASSY PWB1 POWER TRANSISTOR F2 250V 20 a I CIRCUIT 250V 10 CNEEV CN20S Solenoid valve for 4 way valve E Orange RD R VS XINZS VS XIWZSZ VS XINZOCOHS SI PON joopino z 9v L L MHS 4 NOISE LEVEL Model SRK20ZMX S Indoor Unit SRK20ZMX S Noise 39 dB A 38 dB A Level Sound Pressure Level dB Outdoor Unit SR
68. C20ZMX SA Noise 47 dB A standard 2x10 Pa 63 13 SRK T 146 ISO T1 JIS C 9612 eMike position A Mike position Center amp Low points Cooling O Heating 125 250 500 1000 2000 4000 8000 Mid Octave Band frequency Hz Level 47 dB A Sound Pressure Level dB standard 2x10 Pa 63 eMike position at highest noise level in position as mentioned below Distance from front side 1m X Cooling O Heating 70 60 50 40 30 125 250 500 20 10 1000 2000 4000 8000 Mid Octave Band frequency Hz 13 e SRK T 146 Model SRK25ZMX S ISO T1 JIS C 9612 Indoor Unit eMike position SRK25ZMX S Noise 41 dB A Level 41 dB A col e Mike position Center amp Low points Xe Cooling O Heating 70 ste NTO E 60 N W W x ES x wg Nx standard 2x10 Pa Sound Pressure Level dB 20 10 63 125 250 500 1000 2000 4000 8000 Mid Octave Band frequency Hz Outdoor Unit SRC25ZMX SA eMike position at highest noise level in position as mentioned below Distance from front side 1m Noise 47 dB A Level 47 dB A Xe Cooling O Heating 70 60 450 D S n a a
69. Manual No 13 SHK T 146 TECHNICAL MANUAL INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR CONDITIONERS Split system air to air heat pump type SRK20ZMX S SRC20ZMX SA SRK25ZMX S SRC25ZMX SA SRK35ZMX S SRC35ZMX SA RA MITSUBISHI HEAVY INDUSTRIES LTD 13 SRK T 146 CONTENTS SPECIFICATIONS 3 2 EXTERIOR DIMENSIONS 6 ab uMceedon Mr E 6 2 OH YO YYXyo 7 3 Su 8 3 ELECTRICAL WIRING 10 jio r ROUES m 10 2 u sea WINS ce 11 4T NODSELEVEL 12 2 PIPING SYSTEM 15 6 RANGE OF USAGE amp LIMITATIONS 16 T GAPAGITY TABLES esos ue eR RUE 18 8 APPLICATION DATA 19 1 Installation or indoor aries ster ae teat 19 2 Installation of outdoor Unit 23 9 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 31 1 Operation control function by wireless remote control 31 2 UH de uel M yas 32 3 Auto restart function 32 4 Installing two air conditioners
70. Max Power 0 845 0 19 1 01 consumption 0 960 0 23 1 35 Max power consumption 1 65 Running rt A 4 0 3 8 3 6 220 230 240 V A Power source current 4 6 4 4 4 2 220 230 240 V nrush current max current 4 6 4 4 4 2 220 230 240 V Max 8 Operation N Coolin 9 data Power factor Heating 9 EER 4 14 COP 4 48 Silent mode sound pressure level Ooolng45 Heatng43 595 x 780 62 x 290 Munsell color 8 0Y 9 3 0 1 near equivalent 4 2Y 7 5 1 1 near equivalent 13 5 35 5 Compressortype amp Q ty RM B5077MDEf Roetaytype xi Compressor motor Starting method KW 0 90 1 Refrigerant oll Amount type O35 DAMONDFREEZEMAGB Heat exchanger Louverfins amp innergroovedtubing Mfins amp innergroovedtubing Refrigerant control Electronic expansion valve Fantype amp a y Tangeniafanxi Propeller fan x 1 Fan motor Starting method 30 x1 Direct drive 24 x1 Direct drive m tt 13 5_Me 9 5 Lo 6 5 5 0 32 5 14 0 Me 11 0 Lo 8 0 6 5 29 5 Available external static pressure Pa to Outside air intake sami Not possible 23 Air filter Quality Quantity oS Polypropylene net washable x 2 Shock vibration absorber mE Rubber sleeve fo
71. NSTALLATION SPACE INDOOR UNIT FRONT VIEW Indoor unit Installation board 50 Space for service Space for service 100 _ 120 650 1120 Sle 220 450 220 Se cO e o dd i E S 35 35 S Naoto ID CGA 58 54 s ts Es o8 Pipingfor Gas 491 1 S gt Drain hose 016 520 8 er Piping hole 065 Piping for Liquid 559 1 Piping hole 065 Piping for Liquid 20 to 60 type 26 35 Piping for Gas 20 to 35 type 09 52 50 to 60 type 012 7 Unit mm Top view Drain hose changing procedures In case of piping in the right rear direction Left hand side piping Right hand side piping 1 Remove the drain hose 2 Remove the drain cap Shapingofpipings of pipings Taping of the exterior of the exterior Piping in the left rear direction Piping in the right rear direction mE ake __ eee n 9 Pipings p oo T Piping in the left direction Piping in the right direction Remove the screw and drain hose Remove it with hand or pliers Drain hose making it rotate O Hold the bottom of the O Tape only the portion Piping is possible in
72. Outdoor units ODS Outdoor A ane Indoci io ouidor 2 When connecting to the indoor unit control box ceiling concealed type and FDT connection 3 core Connection core Data from the plural master de onl y vice are sent to the network yp y Indoor units Abnormality of a slave device only 1 Mount the SL E board in the control box using the locking supports will also be sent to the network ps 2 Remove 6 bands from the box and put the wiring through the bands to be secured Remote XY control The signal line should be grounded here Bands 6 Net work option Network 08 option Plural control with multiple remote control Multiple remote control connected to Super Link OUT OUT OUT OUT JOUT OUT OUT OUT Outdoor Outdoor Indoor to outdoor Indoor to outdoor ear cutie connection 3 core connection 3 core ndoor to outdoor connection IN IN N IN IN IN IN IN IN 05 R
73. S Is AC 220 230 240V applied between M on the indoor terminal block Defective outdoor PCB Check crossover wires YES Defective indoor PCB 13 SRK T 146 E Insufficient refregerant amount Faulty power transistor Broken compressor Trouble of outdoor un It Service valve close Defective EEV Defective outdoor PCB NO Is the power supply voltage OK Check power supply YES Proper power supply voltages are as follows At the power supply outlet AC 220V AC 198 242V AC 230V AC 207 253V Is the service valves of the outdoor NO Open the service valves AC 240V AC 216 264V unit open YES NO j i Is the refrigerant amount normal A amount properly YES 1 Does electronic expansion valve NO operate properly Defective EEV or outdoor PCB YES 2 Is the output voltage applied to all NO 3 phases of power transistor Judgment of refrigerant quantity Defective outdoor PCB 1 Phenomenon of insufficient refrigerant a Loss of capacity b Poor defrosting Frost is not removed completely YES Is the connector for compressor NO connection good otreet connection c Longer time of hot keep 5 minute or more YES Normal time Approx 1 1 minute and 30 seconds Notes 1 For inspection of electronic expansion valve see page 66 Is the checked result of insulation NO resistance and coil wire resistance of compressor motor OK Defective outdoo
74. Warmer heating Colder heating Colder Cycling interval capacity Cycling interval efficiency for cooling Pcycc for cooling EERcyc J for heating Pcych for heating Degradation coefficient Degradation coefficient cooling Cdc 0 25 heating Cdh 0 5 Annual electricity consumption cooling heating Average thermostat off mode heating Warmer crankcase heater mode heating colder Capacity control indicate one of three options Other items Sound power level indoor Sound power level outdoor fixed No Global warming potential staged No Rated air flow indoor variable Yes Rated air flow outdoor Contact details for obtaining Name and address of the manufacturer or of its authorised representative more information Mitsubishi Heavy Industries Air Conditioning Europe Ltd 7 Roundwood Avenue Stockley Park Uxbridge Middlesex UB11 1AX United Kingdom B RWA0002252 INVERTER WALL MOUNTED TYPE RESIDENTIAL AIR CONDITIONERS ae MITSUBISHI HEAVY INDUSTRIES LTD Air Conditioning amp Refrigeration Systems 16 5 Konan 2 chome Minato ku Tokyo 108 8215 Japan http www mhi co jp Because of our policy of continuous improvement we reserve the right to make changes in all specifications without notice Copyright MITSUBISHI HEAVY INDUSTRIES LTD
75. after fuzzy calculation the speed is kept to 50 60 rps Notes 1 Value for outdoor air temperature is C D ON Upper limit 50 rps Lower limit 44 rps ON Upper limit 60 rps Lower limit 30 rps e Values of A B C D Outdoor air temp C a efe OFF First time A B C D Since the seconds Outdoor air temperature C times iii Reset conditions When either of the following condition is satisfied 1 The outdoor air temperature TH2 is D C or higher 2 The compressor command speed 15 0 rps 13 SRK T 146 f Heating high pressure control i Purpose Prevents anomalous high pressure operation during heating ii Detector Indoor heat exchanger sensor Th2 iii Detail of operation Example Fuzzy After lapse of 20 sec or over After lapse of 20 sec or over lower limit speed 30rps After lapse of 20 sec or over A B C D Indoor heat exchanger temperature C Notes 1 When the indoor heat exchanger temperature is in the range of B C C the speed is reduced by 4 rps at each 20 seconds 2 When the indoor heat exchanger temperature is in the range of C D C the speed is reduced by 8 rps at each 20 seconds When the temperature is D C or higher continues for 1 minute the compressor is stopped 3 When the indoor heat exchanger temperature is in the range of A B C if the compressor command speed is been maint
76. ained and the operation has continued for more than 20 seconds at the same speed it returns to the normal heating operation 4 Indoor blower retains the fan tap when it enters in the high pressure control Outdoor blower is operated in accordance with the speed e Temperature list Unit C T s c Note 1 RPSmin The lower one between the outdoor speed and the compressor command speed g Heating overload protective control i Indoor unit side 1 Operating conditions When the outdoor air temperature TH2 is 17 C or higher continues for 30 seconds while the compressor command speed other than 0 rps 2 Detail of operation indoor fan is stepped up by 1 speed step Upper limit 8th speed 3 Reset conditions The outdoor air temperature TH2 is lower than 16 C ii Outdoor unit side 1 Operating conditions When the outdoor air temperature TH2 is 22 C or higher continues for 30 seconds while the compressor command speed other than 0 rps 2 Detail of operation a Taking the upper limit of compressor command speed range at 60 rps if the output speed obtained with the fuzzy calculation exceeds the upper limit the upper limit value is maintained b The lower limit of compressor command speed is set to 40 rps and even if the calculated result becomes lower than that after fuzzy calculation the speed is kept to 40 rps However when the thermo OFF the speed is reduced to 0 prs c Inching prevention control i
77. al line specification Communication method Previous Super Link New Super Link Line type MVVS MVVS Line diameter 0 75 1 25mm 0 75 1 25mm Signal line total length up to 1000m up to 1500 1000m 2 up to 1000m Signal line maximum length up to 1000m 2 Up to 1500 m for 0 75 and up to 1000 m for 1 25 mm Do not use 2 0 It may cause an error 3 Connect grounding on both ends of the shielding wire For the grounding method refer to the section 6 Installation 13 SRK T 146 1 Set the Super Link network address with SW1 tens place SW2 ones place Connect grounding Connect grounding for the power line to Ground 1 and grounding for and SW3 hundreds place the signal line to Ground or to the Ground on the indoor unit control box 2 Set the SL E board SW3 1 to be ON Master when using this without any remote control no wired remote control nor wireless remote control Ground 2 Ground 3 Set up the plural master slave device using the dip switches on the indoor unit board 4 Set up the remote control master slave device using the slide switch on the re mote control board b Set up to using the address rotary switch the indoor unit board when controlling the indoor unit with the multiple remote control Screw for Ground 2 Basic configuration Plural control with multiple remote controls
78. al powder or any powder is floating ocations where any substances that can affect the unit such as sulphide gas chloride gas acid and alkaline can occur Vehicles and ships ocations where cosmetic or special sprays are often used ocations with direct exposure of oil mist and steam such as kitchen and machine plant ocations where any machines which generate high frequency harmonics are used ocations with salty atmospheres such as coastlines ocations with heavy snow If installed be sure to provide base flame and snow hood mentioned in the manual Locations where the unit is exposed to chimney smoke ocations at high altitude more than 1000m high ocations with ammonic atmospheres ocations where heat radiation from other heat source can affect the unit ocations without good air circulation ocations with any obstacles which can prevent inlet and outlet air of the unit ocations where short circuit of air can occur in case of multiple units installation ocations where strong air blows against the air outlet of outdoor unit Locations where something located above the unit could fall It can cause remarkable decrease in performance corrosion and damage of components malfunction and fire Do not install the indoor unit in the locations listed below Be sure to install the indoor unit according to the installation manual for each model because each indoor unit
79. als from either the outdoor unit or if communications have recovered Indoor or outdoor PCB are faulty the indoor unit being detected correctly Cooling overload operation Cooling high pressure control Outdoor unit fan speed drops Outdoor heat exchanger sensor is short circuit When the outdoor heat exchanger sensor s value exceeds the set value 5 times Refrigerant is insufficient Compressor overheat 110 C Discharge pipe sensor is faulty Service valve is closed When the discharge pipe sensor s value exceeds the set C value 2 times 55 C or lower is detected for 5 seconds continuously 3 times within 40 minutes after intial detection of this anomalous O temperature Outdoor heat exchanger sensor wire is Outdoor heat exchanger sensor disconnected is abnormal Connector connections are poor s Outdoor PCB is faulty Or 55 C lower is detected for 5 seconds continuously within 20 seconds after power ON 7 time flash 3 times 55 C or lower is detected for 5 seconds continuously 3 times within 40 minutes after intial detection of this anomalous O temperature Outdoor air temperature sensor wire is Outdoor air temperature sensor disconnected is abnormal Connector connections are poor Outdoor PCB is faulty Or 55 C lower is detected for 5 seconds continuously within 20 seconds after power ON 8 time flash 3 times Discharge pipe sensor wire is Discharge pipe sensor is disc
80. and a resultant unit failure or refrigerant leak Ensure that no air enters in the refrigerant circuit when the unit is installed and removed If air enters in the refrigerant circuit the pressure in the refrigerant circuit becomes too high which can cause burst and personal injury electrician in accordance with the norm for electrical work and national wiring regulation and the system must be connected to the dedicated circuit Power supply with insufficient capacity and incorrect function done by improper work can cause electric shocks and fire Be sure to shut off the power before starting electrical work Failure to shut off the power can cause electric shocks unit failure or incorrect function of equipment Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work Unconformable cables can cause electric leak anomalous heat production or fire This appliance must be connected to main power supply by means of a circuit breaker or switch fuse 16A with a contact separation of at least 3mm When plugging this appliance a plug conforming to the norm IEC60884 1 must be used Use the prescribed cables for electrical connection tighten the cables securely in terminal block and relieve the cables correctly to prevent overloading the terminal blocks Loose connections or cable mountings can cause anomalous heat production or fire Arrange the wiring in the control box so that it canno
81. ary to charge refrigerant additionally Running the unit with an insufficient quantity of refrigerant for a long time can cause a compressor failure For an installation measuring 15m or shorter in pipe length please charge the refrigerant volume charged for uia Put down the refrigerant volume calculated from the pipe length onto the caution label attached shipment at the factory when you recharge refrigerant after servicing etc on the service panel 8 Heating and condensation prevention Band procured locally Pipe cover procured locally 1 Dress refrigerant pipes both gas and liquid pipes for heat insulation and prevention of dew condensation Improper heat insulation anti dew dressing can result in a water leak or dripping causing damage to household effects etc 2 Use a heat insulating material that can withstand 120 C or a higher temperature Poor heat insulating capacity can cause heat insulation problems or cable deterioration All gas pipes must be securely heat insulated in order to prevent damage from dripping water that comes from the condensation formed on them during a cooling operation or personal injury from burns because their surface can reach quite a high temperature due to discharged gas flowing inside during a heating operation e Wrap indoor units flare joints with heat insulating parts pipe cover for heat insulation both gas and liquid pipes Give heat insulation to both gas and liquid side pipes Bundle a
82. ating NOOFFSET O OFFSET 202 __ To be reset producing 2 0 C increase in return air temperature of indoor unit OFFSET 1 5 Tobereset producing 1 5 increase in return air temperature of indoor unit OFFSET 1 0 _ Tobe reset producing 1 0 C increase in return air temperature of indoor unit OO OFFSET 1 0 To be reset producing 1 0 C increase in return air temperature of indoor unit To be reset producing 1 5 C increase in return air temperature of indoor unit OFFSET 206 Tobe reset producing 2 0 C increase in return air temperature of indoor unit LOW FAN SPEED when heating thermostat is OFF fan speed is low speed SET FAN SPEED When heating thermostat is OFF fan speed is set speed INTERMITTENCE When heating thermostat is OFF fan speed is operated intermittently FAN OFF When heating thermostat is OFF the fan is stopped When the remote thermistor is working FAN OFF is set automatically Do not set FAN OFF when the indoor unit s thermistor is working 108 25 SP OFFSET 09 RETURN AIR TEMP xx CONTROL FROST PREVENTION TEMP Change of indoor heat exchanger temperature to start frost prevention control TEMP HIGH TEMP LOW Working only with the Single split series FAN CONTROL N O To control frost prevention the indoor fan tap is raised FAN CONTROL OFF DRAIN PUMP LINK peo pump i
83. ating limit Pdh Tj operating limit COPd 2 20 Declared capacity for heating Warmer season at indoor Declared coefficient of performance Warmer season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Tj 2 C Pdh Tj 2 C COPd Tj 7 C Pdh Tj 7 C COPd Tj 12 C Pdh Tj 12 C COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Declared capacity for heating Colder season at indoor Declared coefficient of performance Colder season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Pdh COPd Pdh j COPd Pdh COPd Pdh j COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Tj 15 C Pdh Tj 15 C COPd Bivalent temperature Operating limit temperature heating Average i heating Average heating Warmer i heating Warmer heating Colder i heating Colder Cycling interval capacity Cycling interval efficiency for cooling Pcycc kW for cooling EERcyc J for heating Pcych for heating COPcyc Degradation coefficient Degradation coefficient cooling Cdc 025 heating Cdh 0 25 Annual electricity consumption off mode 5 cooling standby mode 5 heating Average thermostat off mode heating Warmer crankcase heater mode heating colder Capacity control indicate one of three options Other item
84. ation is necessary for both gas and liquid pipes I Repair NO Are not there any loose pipe supports Repair the damaged parts No loose pipe supports Some loose pipe supports Repair The existing pipe system is not reusable The existing pipe system is reusable Install a new pipe system INSTALLATION TEST CHECK POINTS Table of pipe size restrictions Standard pipe size Liquid pipe 96 35 Gas pipe 99 52 Please consult with our distributor in the area if you need to recover refrigerant and charge it Usability Q again Maximum one way pipe length Any combinations of pipe sizes not listed in the Length covered without additional charge table are not usable Pipe size AN WARNING lt Where the existing unit be run for a cooling operation Carry out the following steps with the excising unit in the order of 1 2 3 and 4 1 Run the unit for 30 minutes for a cooling operation 2 Stop the indoor fan and run the unit for 3 minutes for a cooling operation returning liquid 3 Close the liquid side service valve of the outdoor unit and pump down refrigerant recovery 4 Blow with nitrogen gas If discolored refrigeration oil or any foreign matters is discharged by the blow wash the pipe system or install a new pipe system e For the flare nut do not use the old one but use the one supplied with the outdoor unit Proc
85. ature lower than 15 C Difference between the outdoor air temperature and the outdoor heat ex changer sensor temperature is larger than 5 C Releasing conditions When one of the following conditions is met 1 Compressor frequency becomes 0 rps When even one of the starting conditions of is lost When continuing for 1 minute Notes 1 The heater is forced to turn off during defrost operation When the defrosting operation is over and the outdoor fan is turned on the heater is forced to turn on for 5 minutes If the outdoor fan is turned off the heater is also turned off 13 SRK T 146 10 MAINTENANCE DATA 1 2 3 Cautions a If you are disassembling and checking an air conditioner be sure to turn off the power before beginning When working on indoor units let the unit sit for about 1 minute after turning off the power before you begin work When working on an outdoor unit there may be an electrical charge applied to the main circuit electrolytic condenser so begin work only after discharging this electrical charge to DC 10 V or lower b When taking out printed circuit boards be sure to do so without exerting force on the circuit boards or package components c When disconnecting and connecting connectors take hold of the connector housing and do not pull on the lead wires Items to check before troubleshooting a Have you thoroughly investigated the details of the trouble which the customer is co
86. cal interference is caused seek a place less likely to cause the problem e f a operation is conducted when the outdoor air temperature is 5 C lower the outdoor unit should be installed at a place where it is not influenced by natural wind Where it is likely that the unit is subjected to strong winds provide wind guards according to the following guidelines Strong winds can cause performance degradation an accidental stop due to a rise of high pressure and a broken fan 4 Caution about selection of installation location 1 If the unit is installed in the area where the snow will accumulate following measures are required The bottom plate of unit and intake outlet may be blocked by snow 1 Install the unit on the base so that the bottom is 2 Install the unit under or provide the roof on site higher than snow cover surface Since drain water generated by defrost control may freeze following measures are required Do not execute drain piping work by using a drain elbow and drain grommets accessories Refer to Drain piping work 1 HAU LAGE AND INSTALLATION Take particular care in carrying in or moving the unit and always perform such an operation with two or more persons When a unit is hoisted with slings for haulage take into consideration the offset of its gravity center position A CAUTION 0 i 2 If the unit can be affected by strong wind following measures are required Strong wind can cau
87. circuit board check Is there a reception sound emitted from the unit when it is operated by the wireless remote control Replace the indoor printed Proceed to the wireless remote circuit board and perform an control troubleshooting proced operation check ure 13 SRK T 146 4 Troubleshooting procedure If the air conditioner runs Confirm the contents of the customer complaint The cause of the trouble can be specifically identified Check the self diagnosis display Eliminate the cause of the trouble and perform an See page 48 operation check Is an error code displayed by Using the Service mode access the self diagnosis the self diagnosis function displays generated in the past See pages 49 55 Is there a history of self diagnosis display items Using the Service mode access the stop history due to protection control generated in the past See pages 49 55 Is there a history of stops due to protection control Identify the faulty component by using the check procedure corresponding to the content of the trouble Replace the faulty component then perform an The air conditioning system is operating normally operation check Note 1 Even in cases where only intermittent stop data are generated the air conditioning system is normal However if the same protective operation recurs re peatedly 3 or more times it will lead to customer complaints Judge th
88. ck will vary depending on the type of a flare tool in use If a conventional flare tool is used please use a copper pipe gauge or a similar instrument to check protrusion so that you can keep measurement B to a correct value C Open close and detachment attachment of the air inlet panel O Tighten the nuts to the following torque Liquid side 06 35 14 0 18 0 N m 1 4 1 8 kgf m Gas side 09 52 34 0 42 0 N m 3 4 4 2 kgf m 012 7 49 0 61 0 N m 4 9 6 1 kgf m N CAUTION Do not apply excess torque to the flared nuts Otherwise the flared nuts may check depending How to remove and fit the front panel To open pull the panel at both ends of lower part and release latches then pull up the panel until you feel resistance The panel stops at approx 60 open position O To close hold the panel at both ends of lower Removing CD Remove the air inlet panel 2 Remove the 5 set screws 3 Remove the 4 latches in the upper section 4 Move the lower part of the panel forward and part to lower downward and push it slightly until push upwards to remove the latch works O To remove pull up the panel to the position O Fitting shown in right illustration and pull it toward you O To install insert the panel arm into the slot on the CD Do remove the air filter 2 Cover the body with the front panel front panel fro
89. conds the compres sor is stopped After the compressor has been stopped it will be restarted after the compressor start delay if a se rial signal can be received again from the indoor control Rotor lock If the motor for the compressor does not turn after it has been started it is determined that a compressor lock has occurred and the compressor is stopped Outdoor fan motor protection If the outdoor fan motor has operated at 75 min or under for more than 30 seconds the compressor and fan motor are stopped Outdoor fan control at low outdoor temperature i Cooling 1 Operating conditions When the outdoor air temperature TH2 is 22 C or lower continues for 30 seconds while the compressor command speed 15 other than 0 rps 2 Detail of operation After the outdoor fan operates at A speed for 60 seconds the corresponding outdoor heat exchanger temperature shall implement the following controls e Value of A Outdoor fan 2nd speed Outdoor temperature gt 10 C Outdoor temperature lt 10 C Ist speed a Outdoor heat exchanger temperature lt 21 C After the outdoor fan speed drops down to 1 speed for 60 seconds if the outdoor heat exchanger tempera ture is lower than 21 C gradually reduce the outdoor fan speed by speed Lower limit Ist speed b 21 C lt Outdoor heat exchanger temperature S lt 38 C After the outdoor fan speed maintains at A speed for 20 seconds if the outdoor heat exchanger temperature is 21
90. e conditions in comparison with the contents of the complaints 5 Self diagnosis table 13 SRK T 146 When this air conditioner performs an emergency stop the reason why the emergency stop occurred is displayed by the flashing of display lights If the air conditioner is operated using the remote control 3 minutes or more after the emergency stop the trouble display stops and the air conditioner resumes operation Wired m remote Description of trouble Indoor unit display panel Heat exchanger sensor error temperature sensor error Heat exchanger sensor 2 error Indoor fan motor error Outdoor air temperature sensor error flashing Outdoor heat E 37 exchanger sensor error flashing Keeps flashing Discharge pipe sensor error Trouble of outdoor unit ER p Broken heat exchanger sensor wire poor connector connection Indoor PCB is faulty Broken room temperature sensor wire poor connector connection ndoor PCB is faulty Broken heat exchanger sensor 2 wire poor connector connection ndoor PCB is faulty Defective fan motor poor connector connection Broken outdoor air temp sensor wire poor connector connection Outdoor PCB is faulty Broken heat exchanger sensor wire poor connector connection Outdoor PCB is faulty Broken discharge pipe sensor wire poor connector connection Outdoor PCB is faulty Compressor lock
91. e read these Safety Precautions thoroughly before installation Safety precautions All the cautionary items mentioned below are important safety related items to be taken into consideration so be sure to observe them at all times A Warning Incorrect installation could lead to serious consequences such as death major injury or envirommental destruction Symbols used in these precautions o Always go along these instruction After completed installation carry out trial operation to confirm no anomaly and ask the user to keep this installation manual in a good place for future reference A WARNING Installation must be carried out by a qualified installer If you install it by yourself it may cause an electric shock fire and personal injury as a result of a system malfunction Install it in full accordance with the instruction manual Incorrect installation may cause an electric shock fire and personal injury Electrical work must be carried out by a qualified electrician in accordance with the technical standard for electrical equipment the indoor wiring standard and this instruction manual Incorrect installation may cause an electric shock fire and personal injury Use the specific cables for wiring And connect all the cables to terminals or connectors securely and clamp them with cable clamps in order for external forces not to be transmitted to the terminals directly Incomplete connection may cause malfunction
92. e valves at the valve main bodies as illustrated on the right and then fasten them applying appropriate fastening torque Service valve size mm Tightening torque N m Flared pipe end A mm Copper pipe outer diameter 96 35 Copper pipe outer diameter 96 35 The screw of the side cover is tightened securely 1 04 1 5 Tightening angle Recommended length of a tool handle mm 06 35 1 4 14 18 45 60 150 Use a torque wrench If a torque wrench is not 09 52 3 8 34 42 30 45 200 available fasten the flare nut manually first and then 49 61 30 45 250 912 7 1 2 Do not hold the valve cap area with a spanner tighten it further using the left table as a guide 9v L L M8HS El LC 6 Evacuation Workflow Aitightnesstestcompleted Service valve 5 Air tightness test CD Although outdoor and indoor units themselves have been tested for air tightness at the factory check the connecting pipes after the installation work for air tightness from the service valve s check joint equipped on the outdoor unit side While conducting a test keep the service valve shut all the time Outdoor unit Checkjoint Indoor unit a Raise the pressure to 0 5MPa and then stop Leave it for five minutes to see if the pressure drops b Then raise the pressure to 1 5MPa and stop Leave it for five mo
93. eat N Check joint TH C o temp awa 9 52 TH3 sensor OON Th1 Th22 4way valve Compressor Heat exchanger I Heat exchanger sensor I Electronic I Th21 Liquid Service valve valve pipe Liquid 0093 Capillary tube gt a 000 XK merecen Saner 13 SRK T 146 4 Cooling cycle Heating cycle Outdoor air temp sensor TH2 Muffler a Accumulator Heat exchanger Heat exchanger sensor E i TH1 Capillary tube k 2 K gt C Muffler 13 SRK T 146 6 RANGE OF USAGE amp LIMITATIONS SRK20 25 35ZMX S Item Cooling operation Approximately 18 to 32 C D B Heating operation Approximately 10 to 30 C D B Refer to the selection chart Indoor return air temperature Upper lower limits Cooling operation Approximately 15 to 46 C D B Heating operation Approximately 15 to 24 C D B Refer to the selection chart Outdoor air temperature Upper lower limits Refrigerant line one way length Max 15m Max 10m Vertical height difference between Outdoor unit is higher outdoor unit and indoor unit Max 10m Outdoor unit is lower Power source voltage Rating 10 Voltage at starting Min 85 of rating Max 4 times h Frequency of ON OFF cycle Inching prevention 10 minutes ON and OFF interval Min 3 minutes Selection chart Correct the cooling and heatin
94. efrigerant circuit becomes too high which can cause burst and personal injury e Do not processing splice the power cord or share a socket with other power plugs This may cause fire or electric shock due to defecting contact defecting insulation and over current etc completed connection of refrigerant piping work air can be sucked into refrigerant circuit which can cause bust or personal injury due to anomalously high pressure in the refrigerant e The electrical installation must be carried out by the qualified electrician in accordance with the norm for electrical work and national wiring regulation and the system must be connected to the dedicated circuit Power supply with insufficient capacity and incorrect function done by improper Work can cause electric shocks and fire e Be sure to shut off the power before starting electrical work Failure to shut off the power can cause electric shocks unit failure or incorrect function of equipment Be sure to use the cables conformed to safety standard and cable ampacity for power distribution work Unconformable cables can cause electric leak anomalous heat production or fire This appliance must be connected to main power supply by means of a e Do not bundling winding or processing for the power cord Or do not deforming the power plug due to tread it This may cause fire or heating e Do not run the unit with removed panels or protections Touching rotating equipments
95. er can read at any time to protect yourself Moreover if necessary ask to hand them to a new user The precautionary items mentioned below are distinguished into two levels AA WARNING anad A CAUTION For installing qualified personnel take precautions in respect to themselves by using suitable protective Wrong installation would cause serious consequences such as injuries or death clothing groves etc and then perform the installation works Wrong installation might cause serious consequences depending on circumstances e Please pay attention not to fall down the tools etc when installing the unit at the high position Both mentions the important items to protect your health and safety so strictly follow them by any means e If unusual noise can be heard during operation consult the dealer e Be sure to confirm no anomaly on the equipment by commissioning after completed installation and explain the The meanings of Marks used here are shown as follows operating methods as well as the maintenance methods of this equipment to the user according to the owners manual Never do it under any circumstances Always do it according to the instruction e Installation must be carried out by the qualified installer e Ventilate the working area well in the event of refrigerant leakage during circuit breaker or switch fuse 16A with a contact separation of at least If you install the system by yourself it may cause serious trouble s
96. er function PROGRAM button This button selects OFF TIMER operation WEEKLY button This button switches the WEEKLY TIMER to ON OFF CLEAN TIME SETUP e ACL This button sets WEEKLY TIMER CLEAN switch This switch selects the CLEAN operation ACL switch Switch for resetting microcomputer TIME SET UP switch This switch is for setting the time RUN HOT KEEP light green blue e lluminates during operation green except ECONO operation blue ECONO operation e Blinks when airflow stops due to the HOT KEEP CLEAN operation and operation mode invalid Steer Poe The above illustration shows all controls but in This button selects SLEEP operation practice only the relevant parts are shown Unit display section This button can be used for turning on off the unit when wireless remote control is not available 1 5 sec ON k oor OFF 0 5 sec 3 sec O CLEAN operation OFF 1 sec HI POWER T peration mode 3D AUTO GL invalid OFF 0 5 sec 3D AUTO light green Illuminates during 3D AUTO operation HI POWER light green TIMER light yellow Illuminates during HIGH POWER operation Illuminates during TIMER operation 13 SRK T 146 2 Unit ON OFF button When the wireless remote control batteries become weak o
97. ess a flare to the dimensions specified for R410A Where the existing unit cannot be run for a cooling operation Wash the pipe system or install a new pipe system f you choose to wash the pipe system please contact our distributor in the area Check the following points again after completion of the installation and before turning on the power Conduct a test run again and ensure that the unit operates properly Explain to the customer how to use the unit and how to take care of the unit following the instruction manual After installation Power cables and connecting wires are securely fixed to the terminal block The power supply voltage is correct as the rating The drain hose is fixed securely Service valve is fully open No gas leaks from the joints of the service valve The pipe joints for indoor and outdoor pipes have been insulated The reverse flow check cap is attached The cover of the pipe cover A faces downward to prevent rain from entering Gaps are properly sealed between the pipe covers A B and the wall surface pipes The screw of the side cover is tightened securely 9v L L M8HS El 13 e SRK T 146 9 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 1 Operation control function by wireless remote control Operation section OPERATION MODE select button Each time the button is pressed the m
98. flow type 1 2 Designed specifically for R410A 3 4 5 G Spamerwench leak detector Designed specifically or R410N Torque wrench 14 0 62 0N m 1 4 6 2kgf m 16 Gauge for projection adjustment 8 Hole core drill 65mm in diameter Used when flare is made by using conventional flare tool Do not use any refrigerant other than R410A R410A will rise to pressure about 1 6 times higher than that of a conventional refrigerant A cylinder containing R410A has a pink indication mark on the top A unit designed for R410A has adopted a different size indoor unit service valve charge port and a different size check joi nt provided in the unit to prevent the charging of a wrong refrigerant by mistake The processed dimension of the flared part of a refrigerant pipe and a flare nut s parallel side measurement have also been altered to raise strength against pressure Accordingly you are required to arrange dedicated R410A tools listed in the table on the left before installing or servicing this unit Do not use a charge cylinder The use of a charge cylinder will cause the refrigerant composition to change which results in performance degradation n charging refrigerant always take it out from a cylinder in the liquid phase All indoor units must be models designed exclusively for R410A Check connectable indoor unit models in a catalog etc A wrong indoor unit if connected into the system will impair proper system ope
99. ft upper part or center upper part Upper Cut off the upper thin part of remote control lower case with a nipper or knife and grind burrs with a file etc 4 Install the lower case to the flat wall with attached two wooden screws 13 SRK T 146 5 Connect the remote control cord to the terminal block Connect the terminal of remote control X Y with the terminal of indoor unit X Y X and Y are no polarity Wiring route is as shown in the right diagram depending on the pulling out direction Lower Wirin g Lower Wiring In case of pulling out from In case of pulling out from upper left upper center The wiring inside the remote control case should be within 0 3mm recommended to 0 5mm The sheath should be peeled off inside the remote control case The peeling off length of each wire is as below Pulling out from upper left Pulling out from upper center X wiring 215mm X wiring 170mm peeling off aa Y wiring 195mm Y wiring 190mm of sheath 6 Install the upper case as before so as not to catch up the remote control cord and tighten with the screws 7 case of exposing cord fix the cord on the wall with cord clamp so as not to slack Installation and wiring of remote control CD Wiring of remote control should use 0 3mm x 2 core wires or cables on site configuration 2 Maximum prolongation of remote control wiring is 600 m If the prolongation is over
100. g Don t touch it to any metal frame of building etc Connect the connection cables to the terminal blocks of the wired remote control and the interface securely no polarity S Clamp the connection cables with cable clamps Control of multiple units by a single wired remote control Multiple units up to 16 can be controlled by a single wired remote control In this case all units connected with a single wired remote control will operate under the same mode and same setting temperature CDConnect all the interface with 2 core cables of wired remote control line Set the address of indoor unit for remote control communication from DEM Ap Interface kit 1 Interface kit 2 Interface kit 16 0 to with the rotary switch SW on the interface PCB Adress 0 1 Adress l 1 Adress F i S After turning the power ON the address of indoor unit can be displayed by Jt cem boe E pressing AIR CON button on the wired remote control e i Remote control line no polarity Make sure all indoor units connected are displayed in order by pressing iRemots control Master Slave setting wired when 2 of wired remote control are used i Q0 trol SWI Slave Maximum two wired remote control can be connected to one indoor unit Interface kit or one group of indoor units s line Set the DIP switch SW1 on the wired remote control to Slave for the slave
101. g capacity in accordance with the conditions as follows The net cooling and heating capacity can be obtained in the following way Net capacity Capacity shown on specification x Correction factors as follows 1 Coefficient of cooling and heating capacity in relation to temperatures Y JL LI SE LRL Coefficient of cooling amp heating capacity in relation to temperature temperature C D B c XI D E Outdoor air TTT WA LLL MEE Th LLL TI D a sas mp a Pip ka gw pce perc 15 10 5 0 5 10 15 ISO T1 Standard Condition Outdoor air W B temperature C W B Heating operation Indoor air D B temperature C D B 13 e SRK T 146 2 Correction of cooling and heating capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling and heating capacity in relation to the one way piping length between the indoor and outdoor units Piping length m 7 10 Cooling 1 0 0 99 0 975 0 965 0 95 Heating 1 0 1 0 1 0 1 0 1 0 3 Correction relative to frosting on outdoor heat exchanger during heating In additions to the foregoing corrections 1 2 the heating capacity needs to be adjusted also with respect to the frosting on the outdoor heat exchanger Air inlet temperature of 3 outdoor unit in CWB Adjustment coefficient 0 92 1 00 How
102. g unit use No Please make an can not Use Are the existing units our products Suniso MS Barrel Freeze HAB Freol inguiby for p gt YES ether oil ester oil reusability ERE E NE E a hes a ir eee E ome eee ee ee Does the existing pipe system to reuse satisfy all of the following 1 The pipe length is 30m or less 2 The pipe size conforms to the table of pipe size restrictions 3 The elevation difference between the indoor and outdoor units conforms to the following restrictions X Check with the flow chart developed for a case YES technical data sheet Is the unit to install in the existing pipe system a twin triple double twin model NO a es blago YES Repair is impossible Is the existing pipe system to reuse free of corrosion flaws or dents Repair the damaged parts NO Repair Is the existing pipe system to reuse free of gas leaks Check whether refrigerant charge was required frequently for the system before Air tightness is OK NO L Are there any branch pipes with no indoor unit connected Remove those branches Eon Cp P NO nina eee ees ntt e etn rer s ius eens Remove Are heat insulation materials of the existing pipe system to Repair is impossible reuse free of peel offs or deterioration Repair the damaged parts Heat insul
103. has each limitation ocations with any obstacles which can prevent inlet and outlet air of the unit ocations where vibration can be amplified due to insufficient strength of structure ocations where the infrared receiver is exposed to the direct sunlight or the strong light beam in case of the infrared specification unit ocations where an equipment affected by high harmonics is placed TV set or radio receiver is placed within 1m ocations where drainage cannot run off safely It can affect performance or function and etc Do not install the unit near the location where leakage of combustible gases can occur If leaked gases accumulate around the unit it can cause fire Do not install the unit where corrosive gas such as sulfurous acid gas etc or combustible gas such as thinner and petroleum gases can accumulate or collect or where volatile combustible substances are handled Corrosive gas can cause corrosion of heat exchanger breakage of plastic parts and etc And combustible gas can cause fire Do not use the indoor unit at the place where water splashes may occur such as in laundries Since the indoor unit is not waterproof it can cause electric shocks and fire Do not install nor use the system close to the equipment that generates electromagnetic fields or high frequency harmonics Equipment such as inverters standby generators medical high frequency equipments and telecommunication equipments can
104. he indoor PCB and outdoor PCB for 10 seconds or longer when the power is turned on or when there is no signal for 7 minute 35 seconds or longer during operation the compressor is stopped When the value of the outdoor heat exchanger sensor exceeds the set value If the compressor motor s magnetic pole positions cannot be correctly detected when the compressor starts The air conditioner stops Active filter When the wrong voltage connected for the power supply Refrigeration cycle system protective control Service valve gas side closed opertion e Service valve is closed e Refrigerant is insufficient e Service valve gas side closed Defective outdoor PCB Broken wired remote control wire defective indoor PCB Defective limit switch Defective suction panel set Defective indoor contro PCB When refrigeration cycle system protective control operates If the output current of inverter exceeds the specifications it makes the compressor stopping In heating mode After 3 minute delay the compressor restarts but if this anomaly occurs 2 times within 20 minute after the initial detection The wired remote control wire Y is open The wired remote control wires X and Y are reversely connected Noise is penetrating the wired remote control lines The wired remote control or indoor PCB is faulty The communications circuit is faulty Actuation of limit switch Notes 1 The air conditio
105. heat insulating material and a pipe tightly together so that no gaps may be left between them and wrap them together with a connecting cable by a dressing tape Both gas and liquid pipes need to be dressed with 20mm or thicker heat insulation materials above the ceiling where relative humidity exceeds 70 9v L L MHS El 3 DRAIN PIPING WORK Execute drain piping by using a drain elbow and drain grommets supplied separately as accessories where water drained from the outdoor unit is a problem e When condensed water needs to be led to a drain etc install the unit on a flat base supplied separately as an optional part or concrete blocks SRC20 35 DXC09 12 N CAUTION it WW Do not put a grommet on e Water may drip where there is a larger amount of drain Ww N Then please secure space for the drain elbow and the drain Ny this hole water Seal around the drain elbow and drain NS NS jit e i hose grommets with putty or adequate caulking material N Anis sa supplementary NN drain hole to discharge S 7 drain water when a large I quantity of it is gathered q e Where you are likely to have several days of sub zero P N e gu e temperatures in a row do not use a drain elbow and Drain elbow 2 mo f uuu Clearance drain grommets There is a risk of drain water freezing _ Drain hose HN rain hose inside and blocking the drain
106. id line and gas line until e Be sure to fix up the service panels e When installing in small rooms take prevention measures not to completed refrigerant piping work air tightness test and evacuation Incorrect fixing can cause electric shocks or fire due to intrusion of dust or water exceed the density limit of refrigerant in the event of leakage referred If the compressor is operated in state of operation service valves before Be sure to switch off the power supply in the event of installation Model the formula accordance with 1505149 If the density of refrigerant exceeds the limit please consult the dealer and install the ventilation system otherwise lack of oxygen can occur which can cause serious accident Use the original accessories and the specified components for installation If parts other than those prescribed by us are used It may cause water leaks electric shocks fire and personal injury Install the unit in a location with good support Unsuitable installation locations can cause the unit to fall and cause material damage and personal injury Ensure the unit is stable when installed so that it can withstand earthquakes and strong winds Unsuitable installation locations can cause the unit to fall and cause material damage and personal injury e Ensure that no air enters in the refrigerant circuit when the unit is installed and removed If air enters in the refrigerant circuit the pressure in the r
107. ied component can cause fire or burst N CAUTION Carry out the electrical work for ground lead with care Do not connect the ground lead to the gas line water line lightning conductor or telephone lines ground lead Incorrect gro unding can cause unit faults such as electric shocks due to short circuiting Use the circuit breaker of correct capacity Circuit breaker should be the one that disconnect all poles under over current Using the incorrect one could cause the system failure and fire Install isolator or disconnect switch on the power supply wiring in accordance with the local codes and regulations The isolator should be locked in OFF state in accordance with EN60204 1 Be sure to install indoor unit properly according to the installation manual in order to run off the drainage smoothly Improper installation of indoor unit can cause dropping water into the room and damaging personal property Install the drainage pipe to run off drainage securely according to the installation manual Incorrect installation of the drainage pipe can cause dropping water into the room and damaging personal property Be sure to install the drainage pipe with descending slope of 1 100 or more and not to make traps and air bleedings Check if the drainage runs off securely during commissioning and ensure the space for inspection and maintenance Secure a space for installation inspection and maintenance specified in the manual In
108. ind However if the fan speed setting is HI and room temperature is 19 C or higher this control is not executed c Defrosting operation i Starting conditions Defrosting operation can be started only when all of the following conditions are met 1 After start of heating operation When it elapsed 45 minutes Accumulated compressor operation time 2 After end of defrosting operation When it elapsed 45 minutes Accumulated compressor operation time 3 Outdoor heat exchanger sensor TH1 temperature When the temperature has been below 5 C for 3 minutes continuously 13 SRK T 146 4 The difference between the outdoor air sensor temperature and the outdoor heat exchanger sensor temperature The outdoor air temperature 0 C 7 C or higher e 15 C The outdoor air temperature lt 0 C 4 15 x The outdoor air temperature 7 C or higher e The outdoor air temperature lt 15 C 5 C or higher Models SRK20 35 jJ ell r cy oa Outdoor heat exchanger temperature PTT TTT TTT ETT TT TT ELS LEE BUT DE ARERR TET 20 As 10 5 0 5 10 Outdoor air temperature 5 During continuous compressor operation In addition when the speed command from the indoor controller of the indoor unit during heating operation has counted 0 rps 10 times or more and all conditions of 1 2 3 and 5 above and the outdo
109. ing open phase on compressor output short circuit on power transistor service valve is closed Broken compressor wire Compressor blockage Overload operation Overcharge Compressor locking Display flashing condition When a heat exchanger sensor 1 wire disconnection is detected while operation is stopped If a temperature of 28 C or lower is detected for 15 seconds it is judged that the wire is disconnected Not displayed during operation When a room temperature sensor wire disconnection is detected while operation is stopped If a temperature of 45 C or lower is detected for 15 seconds it is judged that the wire is disconnected Not displayed during operation When a heat exchanger sensor 2 wire disconnection is detected while operation is stopped If a temperature of 28 C or lower is detected for 15 seconds it is judged that the wire is disconnected Not displayed during operation When conditions for turning the indoor unit s fan motor on exist during air conditioner operation an indoor unit fan motor speed of 300 min or lower 15 measured for 30 seconds or longer The air conditioner stops 55 C or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature Or 55 C or lower is detected for within 20 seconds after power ON The compressor is stopped 55 C or lower is detected for 5 seconds co
110. ing sure the fan motor and indoor PCB are nor mal connect the connectors and confirm that the fan motor is turning If power is turned on while one or the other is broken down it could cause the other to break down also Defective indoor PCB Power supply reset Replace fan motor If the itnormalized error persists after replacing the fan motor replace the YES indoor PCB Malfunction by temporary noise Current cut 13 SRK T 146 Compressor lock Compressor wiring short circuit Compressor output is open phase Outdoor PCB is faulty Service valve is closed EEV is faulty Compressor faulty In the service valves of the outdoor NO Open the service valves unit open YES YES i Is there any shortcircuit Secure space tor inletand outlet NO Does electroni ion val NO i pi puce Deu PEY For inspection of electronic expansion valve see page 66 operate normally Defective outdoor PCB YES When the inverter is operated YES ati CONN Cun Be Wik SF Defective outdoor PCB 1 Ifitis normal it is the rotor lock problem compressor does the current cut operate within 10 minutes 1 NO I 1 li ll NO Piin ere is are Defective outdoor PCB phases of power transistor YES Inspect compressor Current safe stop Check compressor wiring visually If check results are normal Check insulation resistance 1 MQ or over compressor is l
111. is working and to be set for producing 2 0 C increase in temperature EISENSOR 1 0 Remote thermistor is working and to be set for producing 1 0 C increase in temperature EISENSOR 1 0 Remote thermistor is working and to be set for producing 1 0 C increase in temperature EJSENSUR 2 0 _ Remote thermistor is working and to be set for producing 2 0 C increase in temperature EJSENSUR 3 0 Remote thermistor is working and to be set for producing 3 0 C increase in temperature INVALID VALID In case of Single split series by connecting ventilation device to CNT of the oom indoor printed circuit board in case of VRF series by connecting it to CND of the indoor printed circuit board the operation of ventilation device is linked with the of indoor unit In case of Single split series by connecting ventilation device to CNT of the indoor printed poverrum circuit board in case of VRF series by connecting it to CND of the indoor printed circuit board you can operate stop the ventilation device independently by C VENT button INDN CHANGE If you change the range of set temperature the indication of set temperature will vary following the control THON CHANGE NEN If you change the range of set temperature the indication of set temperature will not vary following the control and keep the set temperature AUTO RESTART 11 VENT LINK SET TEMP RANGE SET
112. j temperature 20 C and outdoor temperature Tj Tj 7 C Pdh COPd Tj 2 C Pdh j COPd Tj 7 C Pdh COPd Tj 12 C Pdh COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd Tj operating limit Pdh Tj operating limit COPd Tj 15 C Pdh Tj 15 C COPd Bivalent temperature Operating limit temperature heating Average heating Average heating Warmer heating Warmer heating Colder heating Colder Cycling interval capacity Cycling interval efficiency for cooling Pcycc kW for cooling EERcyc for heating Pcych for heating COPoyc Degradation coefficient Degradation coefficient cooling Cdc 025 heating Cdh 025 Electric power input in power modes other than active mode Annual electricity consumption off mode 5 cooling standby mode heating Average thermostat off mode heating Warmer crankcase heater mode heating colder Capacity control indicate one of three options Other items Sound power level indoor Sound power level outdoor Global warming potential Rated air flow indoor Rated air flow outdoor Contact details for obtaining Name and address of the manufacturer or of its authorised representative more information Mitsubishi Heavy Industries Air Conditioning Europe Ltd 7 Roundwood Avenue Stockley Park Uxbridge Middlesex UB11 1AX United Kingdom B RWA000Z252 0 13 SRK T 146 Model SRK25ZMX S Information to identify the model s to which the info
113. l 1 Is wireless remote control normal NO Defective wireless remote control YES Replace the display Again pushing operating switch Is the unit operable with wireless remote control YES Abnormality is not found NO Defective wireless NO remote control Does unit ON OFF button operates Note 1 Check method of wireless remote control a Press the reset switch of the wireless remote control b Ifall LCD are displayed after one 1 display it is basically normal YES Normal Operating the unit YES Operating the unit user grip rell Ele eeu e EI BIN TP 4 4 Control problem on gt JH Pict 1 TO Mon Tue Wed Thu Fri Sat Sun Simplified check methd of wireless remote control It is normal if the signal transmission section of the wireless remote control emits a whitish light at each transmission on the monitor of digital camera NO 11 Inspection procedure for blown fuse on the indoor and outdoor fole fice blown onthe indosr and Go to the inspection procedure for electric outdoor equipment of indoor and outdoor units See pages 62 to 66 YES Is there any faulty part fan motor etc See pages 62 to 66 Replace the faulty part and the YES Fan motor is faulty fuse Test run then the unit for checking Faulty part other than fan motor
114. l is normal 1 No gas leaks from the joints of the service valve L _ The pipe joints for indoor and outdoor pipes have been insulated No abnormal noise Operation of the unit has been explained to the customer Three minutes restart preventive timer L Power cables and crossover wires are securely fixed to the terminal board The screw of the service panel is tightened securely Water drains smoothly When the air conditioner is restarted or when changing the operation the unit will not start operating for 1 Protective functions are not working approximately 3 minutes This is to protect the unit and it is not a malfunction 9v L L M8HS 2 Installation of outdoor unit Models SRC20ZMX SA 25ZMX SA 35ZMX SA RWCO12A037 SRC20 25 35 50 DXCO09 12 18 R410A REFRIGERANT USED e This installation manual deals with outdoor units and general installation specifications only For indoor units refer to page 19 e When install the unit be sure to check whether the selection of installation place power supply specifications usage limitation piping length height differences between indoor and outdoor units power supply voltage and etc and installation spaces SAFETY PRECAUTIONS e Read the SAFETY PRECAUTIONS carefully first of all and strictly follow it during the installation work in order e Keep the installation manual together with owners manual at a place where any us
115. lected during heating cooling or dehumidifying operation the unit is operated in the previous operation mode Setting temperature can be adjusted within the following range There is the relationship as shown below between the signals of the wireless remote control and the setting temperature Unit C Signals of wireless remote control Display T eating 2 2 32 s 2 When the unit is operated automatically with the wired remote control connected the cooling operation is controlled accord Setting ing to the display temperatures while the setting temperature is compensated by 41 Cduring dehumidifying or by 2 C dur ing heating 18 Protective control function a b Frost prevention control During cooling or dehumidifying i Operating conditions 1 Indoor heat exchanger temperature Th2 is lower than 5 C compressor 2 5 minutes after reaching the compressor command speed except 0 rps ii Detail of anti frost operation Lower Indoor heat exchanger temperature limit 5 C or lower 2 5 C or lower speed Item Lower limit of compressor command speed 0 rps 0 rps Protects the fan tap just before Indoor fan Depends on operation mode 25 5 8 frost prevention control i Outdoor fan Depends on command speed Indoor heat exchanger Depends on stop mode 4 way valve temperature C Notes 1 When the indoor
116. light 1 s digit 2 time flash 4 10 2 x 1 42 gt From the table read the instructions for error code 42 current cut 1 5 sec RUN light 10 s digit OFF ON TIMER light 1 s digit OFF 11 second interval 2 Error display Is not displayed automatic recovery only O Displayed If there isa displayed the error display shows the number of times that an auto recovery occurred for the same reason has reached the number of times in Ifno 15 displayed the error display shows that the trouble has occurred once 3 Auto Recovery Does not occur Auto recovery occurs d Operation mode Fan speed mode information tables 1 Operation mode Fan speed mode Display pattern when Display pattern when in service mode Operation mode in service mode when there is an 10 s digit 1 s digit Am j Fan speed mode when there is an abnormal stop f no data are recorded error code 1s normal the information display in the operation mode and fan speed mode becomes as follows Mode J Display when error code 15 normal Operation mode AUTO Fan speed mode AUTO Example Operation mode COOL Fan speed mode HI 1 5 sec I ON RUN light 10 s digit OFF ON TIMER light 1 s digit OFF 11 second interval 13 SRK T 146 e Temperatare information i Room temperature sensor indoor heat exchanger sensor outdoo
117. m temperature indoor heat exchanger outdoor heat exchanger outdoor air temperature discharge pipe remote control information operation switching fan speed switching are recorded when trouble occurs so more detailed information can be checked These are the data which display the reason by a stop occurred when the air conditioning system performed protective stops etc in the past Even if stop data alone are generated the system restarts automatically After executing the stop mode while the display is normal the system Stop data restarts automatically Data for up to 10 previous occasions are stored Data older than the 10th previous occasion are erased Important In cases where transient stop data only are generated the air conditioner system may still be normal However if the same protective stop occurs frequently 3 or more times 1t could lead to customer complaints b Service mode display procedure When the optional wired remote control is used When the service mode is effective and the optional wired remote control is used the signal from the wired remote control won t be received Use the self diagnostic function with the wireless remote control Turn off the air conditioner s power once then wait 1 minute or longer Turn the air conditioner s power on again while pressing the unit ON OFF button 1 If the buzzer does not sound no matter how Did a buzzer located in the indoor unit s
118. m the position shown in right 3 Fit the 4 latches in the upper section illustration hold the panel at both ends of lower 4 Tighten the 5 set screws part lower it downward slowly then push it 5 Fit the air filter slightly until the latch works Fit the air inlet panel Higher than specified The drain hose Wavy Gutter Wall Pipe accommodating section AUTION through all installation steps and check if the drainage is all right Otherwise water leak may occur Odor from ih the gutter The gap to the ground The drain hose tip is in water 5 cm or less tip is in the gutter Pour water to the drain pan located under the heat exchanger and ensure that the water is discharged outdoor When the extended drain hose is indoor securely insulate it with a heat insulator available in the market Cover the coupling with insulator and then cover it with tapes Vinyl tape Use an attached insulation pad for heat insulation Position it so that the slit area faces upward Cover the indoor unit s flare connected joints after they are checked for a gas leak with an indoor unit heat insulating material and then wrap them with a tape with an attached insulation pad placed over the heat insulating material s slit area Finishing work and fixing Refrigerant piping Connection wiring
119. mp 40 a E s e mE us 5 2 30 un 20 10 63 125 250 500 1000 2000 4000 8000 Mid Octave Band frequency Hz 13 SRK T 146 Model SRK35ZMX S ISO T1 JIS C 9612 Indoor Unit wawapana SRK35ZMX S eMike a Noise 43 dB A ba Level 42 dB A Unit Mike position Center amp Low points X e Cooling O Heating 70 70 oe N 0 7 x i T lt nau Sey 60 lt T y Nds a t sje a Ss es x e Tnu 8 40 standard 2x10 Sound Pressure Level dB 20 10 63 125 250 500 1000 2000 4000 8000 Mid Octave Band frequency Hz Outdoor Unit SRC35ZMX SA eMike position at highest noise level in position as mentioned below Di from f i 1 Noise 50 dB A istance from front side 1m Level 50 dB A Cooling Heating 70 60 en o A 40 E D cd e mE sS E 30 un 20 10 63 125 250 500 1000 2000 4000 8000 Mid Octave Band frequency Hz 5 PIPING SYSTEM Models SRK20ZMX S 25ZMX S 35ZMX S Flare Outdoor unit connection Service valve Gas gt lt lt DN Discharge pipe Gas pipe temp sensor H
120. mplaining about b Is the air conditioner running Is it displaying any self diagnosis information c Is a power supply with the correct voltage connected d Are the control lines connecting the indoor and outdoor units wired correctly and connected securely e Is the outdoor unit s service valve open Troubleshooting procedure If the air conditioner does not run at all If the air conditioner does not run at all diagnose the trouble using the following troubleshooting procedure If the air conditioner is running but breaks down proceed to troubleshooting step 4 When all the following conditions are met we say that the air conditioner will not run at all a The RUN light does not light up b The flaps do not open c The indoor unit fan motors do not run d The self diagnosis display does not function Troubleshooting procedure If the air conditioner does not run at all If the voltage is correct it will be within the following voltage range AC 198 264 V Is the correct voltage Make sure the correct volt connected for the power age is connected then per supply form an operation check Is the current fuse on the in door unit s board broken NO With the power off do the flaps open manually then close again when the power is turned on If the package components are not damaged replace the fuse and perform an op eration check again Proceed to the indoor printed
121. n be sure to keep the plastic wrapper example Open the door a little In addition just as above so set up the to their original state and wiring route and the necessary clearance from away from children and to dispose after tear it up opening port if the room lapse into negative pressure status due to all metal parts should be secured Be sure to insulate the refrigerant pipes so as not to condense the register of the wind for the high rise apartment etc e Secure a space for installation inspection and maintenance specified in ambient air moisture on them the manual Insufficient insulation can cause condensation which can lead to moisture Insufficient space can result in accident such as personal injury due to falling from damage on the ceiling floor furniture and any other valuables the installation place e Do not install the unit in the locations listed below e Do not install the outdoor unit in the locations listed below e Do not install the outdoor unit in a location where insects and small Locations where carbon fiber metal powder or any powder is floating e Locations where discharged hot air or operating sound of the outdoor unit can animals can inhabit e Locations where any substances that can affect the unit such as sulphide gas bother neighborhood Insects and small animals can enter the electric parts and cause damage or fire chloride gas acid and alkaline can occur e Locations where outlet air of the o
122. n respect to themselves by using suitable protective clothing groves etc and then perform the installation works Please pay attention not to fall down the tools etc when installing the unit at the high position f unusual noise can be heard during operation consult the dealer e The meanings of Marks used here are shown as follows Never do it under any Q QD Always do it according to the circumstances instruction A WARNING Installation must be carried out by the qualified installer If you install the system by yourself it may cause serious trouble such as water leaks electric shocks fire and personal injury as a result of a system Tighten the flare nut by torque wrench with specified method If the flare nut were tightened with excess torque this may cause burst and refrigerant leakage after a long period malfunction Do not carry out the installation and maintenance work except The electrical installation must be carried out by the qualified the by qualified installer Install the system in full accordance with the installation manual Incorrect installation may cause bursts personal injury water leaks electric shocks and fire Be sure to use only for household and residence If this appliance is installed in inferior environment such as machine shop and etc it can cause malfunction Use the original accessories and the specified components for installation If parts other than
123. nction indication returns Set as the same procedure if you want to set continuously and if to finish go to 7 Liz COMPLETE 7 Press ON OFF button Setting is finished 13 e SRK T 146 Operation message Function description setting description Function No 7 Finishing button h2 Siang buton Indoor unit selection button unit selection button Previous screen button On the occasion of indoor unit function selection DATA LOADING Blinking for 2 to 23 seconds to read the data 1 Indication is changed to 02 FAN SPEED SET Goto Note 1 If plural indoor units are connected to a remote control the indication is I U 000 blinking lt The lowest number of the indoor unit connected is indicated 1 UO00 5 2 Press A or Y button Select the number of the indoor unit you are to set If you select ALL UNIT Y you can set the same setting with all unites 3 Press SET button Press A or W button No and function are indicated by turns on the indoor unit function table then you can select from them For example Function No FAN SPEED SET Function Press SET button The current setting of selected function is indicated For example STANDARD lt If 02 FAN SPEED SET is selected Lie STANDARD Press A Y button Select the setting Press 5 button SET COMPLETE will
124. ner cannot be restarted using the remote control for 3 minutes after operation stops 2 The wired remote control is option parts 13 SRK T 146 6 Service mode Trouble mode access function This air conditioner is capable of recording error displays and protective stops service data which have occurred in the past If self diagnosis displays cannot be confirmed it 1s possible to get a grasp of the conditions at the time trouble occurred by checking these service data a Explanation of terms The service mode 15 the mode where service data are displayed by flashing of the display lights when the operations in item b below are performed with the indoor control These are the contents of error displays and protective stops which occurred in the past in the air conditioner system Error display contents and protective stop data from past anomalous Service data operations of the air conditioner system are saved in the indoor unit control s non volatile memory memory which is not erased when the power goes off There are two types of data self diagnosis data and stop data described below These are the data which display the reason why a stop occurred when an error display self diagnosis display occurred in an indoor unit Data are recorded for up to 5 previous occurrences Data which are older than the 5th previous occurrence are erased Self diagnosis data In addition data on the temperature of each sensor roo
125. nnection cables connected securely to the terminal blocks and connectors Are the thickness and length of the connection cables conformed with the standard 13 SRK T 146 Functions of CNT connector It is available to operate the air conditioning unit and to monitor the operation status with the external control unit remote display by sending the input output signal through CNT connector on the indoor control PCB Note 1 0 3mm X 2m 0 75mm X 2m Indoor units Do not use the length over 2 meter Connect a external remote control unit procured locally SE Butt splice to CNT terminal 2 In case of the pulse input switch OFF the DIP switch SW2 1 on the interface PCB CNT d bw n When setting operation permission prohibition mode EM switch OFF the DIP switch SW2 3 on the interface PCB Remote start stop button or timer point PCB Printed Circuit Board Remote start stop kit procured locally Output Q XR are for the DC 12V relay Input Output signal Output T Content XR is a DC 12 24V or AC 220 240V relay Duingacondionerepenton CNT connector local maker model During heating operation Malfunction output During anomalous stop 5263T SW2 1 SW2 3 Input I Air Operation by Output Input signal Content Conditioner Remote Cot DIP switch ee ene LevelPulse XRs in SW2 3 S imt ON External input ON Level input pou
126. ntinuously 3 times within 40 minutes after initial detection of this anomalous temperature Or 55 C or lower is detected for within 20 seconds after power The compressor is stopped 25 C or lower is detected for 5 seconds continuously 3 times within 40 minutes after initial detection of this anomalous temperature The compressor is stopped The compressor output current exceeds the set value during compressor start The air conditioner stops When there is an emergency stop caused by trouble in the outdoor unit or the input current value is found to be lower than the set value The air conditioner stops When the compressor command speed is lower than the set value and the current safe has operated the compressor stops Power E When the power transistor is judged breakdown while compressor transistor error P starts The compressor is stopped Over heat of compressor Error of signal transmission Cooling high pressure protecton Gas shortage defective discharge pipe sensor service valve is closed Defective power supply Broken signal wire defective indoor outdoor PCB Overload operation overcharge Broken outdoor heat exchange sensor wire Service valve is closed Defective compressor Open phase on compressor Defective outdoor PCB When the value of the discharge pipe sensor exceeds the set value The air conditioner stops When there is no signal between t
127. ocked Check coil wire resistance SRC20 35 1 703 2 U V V W U W or more at 20 C SRC50 60 0 864Q U V V W U W or more at 20 C Overload operation compressor lock overcharge Is the refrigerant amount mormal YES Is outdoor ventilation condition good YES Inspect compressor YES Inspect outdoor air temp sensor Defective outdoor PCB NO 13 e SRK T 146 Over heat of com pressor Gas shortage defective pui pipe sensor Is discharge pipe sensor Connector connection check resistance resistance value good value check replacement of discharge pipe page 57 sensor YES Is sufficient quantity of refrigerant circulated Defective outdoor PCB Clogged capillary tube or strainer defective EEV etc Does trouble persist after charging gas NO Check if there are any places where gas is leaking Error of signal trahsmission Tao power cable defective indoor NO Trouble by transient cause not unit trouble Does error persist after power reset YES Are the lines conneeung the indoor NO Correct improper wire connection on indoor and outdoor units connected ontdootunit normally YES Is DC 0 Approx 20V detected between 2 terminals outdoor terminal block NO Defective outdoor PCB YES Is DC 0 Approx 20V detected between 2 terminals on indoor terminal block NO Check crossover wires YE
128. ode changes Press to start operation press again to stop Gc s TEMPERATURE button El CN This button sets the room temperature aa NINE 4 dM FANSPEEDbuton SPEED button oNj orr 70 000 Each time the button is pressed the fan Ooo speed changes HI ECO button This button changes the HIGH POWER w AIR FLOW UP DOWN button ECONOMY operation This button changes the air flow up down direction 3D AUTO button This button sets 3D AUTO operation NIGHT SETBACK button This button sets NIGHT SETBACK operation SET Child Lock button Use this button to set the timer and Child Lock ON This button selects ON TIMER operation CANCEL button OFF v CANCEL This button cancels the ON timer OFF OFF TIMER button WEEKLY SLEEP AIR FLOW LEFT RIGHT button This button changes the air flow left right direction SILENT button This buttion changes the SILENT operation ALLERGEN CLEAR button This button selects ALLERGEN CLEAR operation AIR FLOW L R U D 890 TIMER mO A SE ON TIMER button lt m D timer and SLEEP operation TIMER button This buttions is used for setting the cur rent time and tim
129. of function setting mode is NO INDN CHANGE If upper limit value is set During heating even if the value exceeding the upper limit is set upper limit value will be sent to the indoor unit But the indication is the same as the temperature set If lower limit value is set During except heating even if the value lower than the lower limit is set lower limit value will be sent to the indoor unit But the indication is the same as the temperature set Q How to set upper and lower limit value 1 Stop the air conditioner and press SET MODE button at the same time for over three seconds The indication changes to FUNCTION SET WV Press V button once and change to the TEMP RANGE indication Press o SET button and enter the temperature range setting mode Select UPPER LIMIT Y or LOWER LIMIT A by using A Y button Press SET button to fix When UPPER LIMIT Y is selected valid during heating D Indication lx V SET UP gt UPPER 30 C V Select the upper limit value with temperature setting button Indication example UPPER 26 C V A blinking 3 Press SET button to fix Indication example UPPER 26 C Displayed for two seconds After the fixed upper limit value displayed for two seconds the indication will return to UPPER LIMIT Y 7 When LOWER LIMIT A is selected valid during cooling dry fan automatic D Indication V A SET UP LOWER 18 C A 2
130. old to generate condensation OPlaces exposed to oil mist or steam directly OUneven surface Cut out the punch outs for the connection cables running into the casing M Mounting the interface directly on a wall with cutter iring inlet C Mount the lower casing of the interface on a flat surface with wood screws provided as standard accessory Mount the upper casing Mount the upper casing CD Mount it on a wall or a pillar with 2 of wood screws Recessing the interface in the wall Recess the electrical box procured locally and connection cables in the wall Mount the lower casing of the interface to the electrical box with M4 screws procured locally S Mount the upper casing Recess the electrical Sa Mount it to the electrical box box and connection cables E F with 2 of M4 screws procured locally Electrical box procured locally Mount the upper casing Mounting the interface with the mounting bracket Mount the mounting bracket to the interface with tapping screws provided as standard accessory Mount the mounting bracket on wall or the like with wood screws provided as standard accessory S Mount the mounting bracket to a wall surface etc using the wood screws provided Mount the mounting 3 Mount the bracket on bracket on the interface a wall or a pillar with with 2 of tapping screws 2 of wood screws Installation check items Are the co
131. olt anchor w Z Level position 2 locations Bolt Nut M6x12 M6 Mating mark for Mounting A level surface Mounting J board STS board Max 10 O Adjustment of the installation board in the horizontal direction is to be y conducted with four screws in a temporary tightened state WU O Adjust so the board will be A e 0 oN level by turning the board Nothing is connected to this hole Standard 4 with the standard hole as hole on the back of indoor unit the center Drilling of holes and fixture of sleeve Option parts When drilling the wall that contains a metal lath wire lath or metal plate be sure to use pipe hole sleeve sold separately b z 3 I Tum to 065 N gy tighten Indoor side Outdoor side Indoor side Outdoor side Installed state O Drill a hole with whole core drill O In case of rear piping draw out cut off the lower and the right side portions of the sleeve collar C Installing the support of piping D Matters of special notice when piping from left or central rear of the unit 2 Wireless remote control 3 Remote control holder 2 5 Wood screws p s 20 F Relation between setting plate and indoor unit 10o M Mjn 0 cm minimum from the ceiling CD Installation board Wall I
132. onnected abnormal anomalous stop Connector connections are poor Outdoor PCB is faulty 25 C or lower is detected for 5 seconds continuously 3 times O within 40 minutes after intial detection of this anomalous temperature 3 times If the inverter output current value exceeds the setting value G within 80 seconds after the compressor ON in the heating mode the compressor stops Compressor lock Compressor wiring short circuit Compressor output is open phase Compressor start fails 42 times in succession and the 42 Current cut Outdoor PCB is faulty O reason for the final failure is current cut 2 times Service valve is closed imes Electronic expansion valve is faulty Service valve gas side Service valve gas side closed closed operation Outdoor PCB is faulty 2 times Compressor is faulty 7 time When the wrong voltage connected for the power supply flash Active filter voltage error Defective active filter When the outdoor PCB is faulty 8 time 48 Outdoor unit s fan motor is fan san faulty When a fan speed of 75 min or lower continues for 30 C flash abnormal onnector connections are poor sscondsor lonser I Outdoor PCB is faulty j fe nies Snot ou EU Outdoor PCB is faulty When it is judged that the power transistor was 51 transistor high side Power transistor is damaged damaged at the time the compressor started Current cut circuit breakdown 7 time 5
133. ontinuous compressor operation command Continiuous compressor operation command is not released Heat exchanger Cooling Freezing cycle system protection trips and stops the compressor sensor Anti frosting Heating High pressure control mode Compressor stop command Hot keep Indoor fan stop b Outdoor unit Operation Phenomenon Sensor d Disconnected wire Heat exchanger Compressor stop Compressor stop Sensor Heating Defrosting is not performed Defrosting is performed for 10 minutes at approx 35 minutes The compressor cannot pick up its speed owing to the current Cooling QM wng Compressor stop Ourdoor air safe so that the designed capacity is not achieved temperature sensor The compressor cannot pick up its speed owing to the heatin n p P i p indi Defrosting is performed for 10 minutes at approx 35 minutes overload protection so that the designed capacity is not achieved Discharge pipe Compressor overload protection is disabled sensor All modes Can be operated Compressor stop 9 Checking the indoor electrical equipment a Indoor PCB check procedure Is there voltage between terminal blocks 1 and 2 AC 220 230 240 V NO Inspect power source for outdoor unit YES YES Is the fuse burnt out 3 15 A Replace fuse NO Is the voltage between terminal Replace indoor PCB blocks 2 and 3 oscillating between DC 0 and 20V
134. ontrol and monitor the commercial air conditioning unit 4 Control switching Settings can be changed by the switch SW3 on the SL E board as in the fol lowing Master 1 OFF default Slave Fixed previous protocol 2 OFF default Automatic adjustment of Super Link protocol SW3 Indicates the forced operation stop when abnormality has occurred 3 OFF default Indicates the status of running stop as it is when abnormality has occurred ON The hundredth address activated 1 OFF default The hundredth address activated Q O Connected to the terminals for Blue Super Link signal lines A A SL E board Blue B F B Black pe Cc x x m m g N wo White Y y Connected to the remote control terminals no polarity the length should be 600 m or shorter ON Bat O 200 m or shorter 0 5 mm x 2 cores Oorr SW3W SWI SW2 300 m or shorter 0 75 mm x 2 cores 400 m or shorter 1 25 mm x 2 cores 600 m or shorter 2 0 mm x 2 cores Master Slave Network address setting switches address 000 127 1 Whether the actual link is either the new Super Link or the previous Super Link depends on the models of the connected outdoor and indoor units Consult the agent or the dealer Sign
135. or air temperature 15 3 C or less are satisfied note that when the temperature for outdoor heat exchanger sensor TH1 15 5 C or less 62 rps or more 4 C or less less than 62 rps defrost operation is started Ending conditions Operation returns to the heating cycle when either one of the following is met 1 Outdoor heat exchanger sensor TH1 temperature 13 C or higher 2 Continued operation time of defrosting For more than 16 minutes and 50 seconds e Defrost operation Heating operation Max 16 minutes and 50 seconds 2 7 minutes I I I I I I I Hot keep operation X Depends on an operation condition the time can be longer than 7 minutes 15 Outline of cooling operation a Operation of major functional components in Cooling mode Cooling Thermostat ON Thermostat OFF Failure OFF OFF 13 SRK T 146 b Detail of control in each mode Pattern i Fuzzy operation During the fuzzy operation the air flow and the compressor speed are controlled by calculating the difference between the indoor temperature setting correction temperature and the return air temperature SRK20ZMX S SRK25ZMX S SRK35ZMX S Fan speed 16 Outline of dry dehumidifying operationion a Purpose of DRY mode The purpose is Dehumidification and not to control the humidity to the target condition Indoor outdoor unit control the operation condition to reduce the humidity and also prevent over cooling
136. ot install nor use the system close to the equipment that generates This may cause damage the objects or injury due to falling to the object e Locations where something located above the unit could fall electromagnetic fields or high frequency harmonics Do not use the unit for special purposes such as storing foods cooling It can cause remarkable decrease in performance corrosion and damage of Equipment such as inverters standby generators medical high frequency precision instruments and preservation of animals plants or art components malfunction and fire equipments and telecommunication equipments can affect the system and cause Do not clean up the unit with water malfunctions and breakdowns The system can also affect medical equipment and telecommunication equipment and obstruct its function or cause jamming Check before installation work Drain elbow Heat pump type only Model name and power source Option parts Q ty Refrigerant piping length Piping wiring and miscellaneous small parts Sealing plate Indoor unit installation manual 6 Sleeve x Inclination plate 1 Accessories for outdoor unit Putly P D Grommet qq SRC20 35 Drain hose extension hose Heat pump DXCO09 12 b Piping cover type only Model SRC50 DXC18 for insulation of connection piping Notabilia as a unit designed for R410A Wrench key Hexagon 4m m pee on neo oi cu Plus headed driver Vacuum pump adapter Anti reverse
137. ouch any buttons with wet hands e Locations where the unit is exposed to chimney smoke e Locations at high altitude more than 1000m high gases can occur Do not install the unit near the location where leakage of combustible It can cause electric shocks e Do not touch any refrigerant pipes with your hands when the system is in e Locations with ammonic atmospheres If leaked gases accumulate around the unit it can cause fire operation e Locations where heat radiation from other heat source can affect the unit Do not install the unit where corrosive gas such as sulfurous acid gas etc During operation the refrigerant pipes become extremely hot or extremely cold e ocations without good air circulation or combustible gas such as thinner and petroleum gases can accumulate depending the operating condition and it can cause burn injury or frost injury e Locations with any obstacles which can prevent inlet and outlet air of the unit or collect or where volatile combustible substances are handled Do not touch the suction or aluminum fin on the outdoor unit Locations where short circuit of air can occur in case of multiple units Corrosive gas can cause corrosion of heat exchanger breakage of plastic parts This may cause injury installation and etc And combustible gas can cause fire Do not put anything on the outdoor unit and operating unit e Locations where strong air blows against the air outlet of outdoor unit Do n
138. ound many times you repeat the operation the unit ON OFF button may be faulty Within 1 minute after turning the air conditioner s Set the wireless remote control settings on power on signals will be sent from the wireless Cooling Operation Fan Speed MED remote control and Set Temperature 21 C Count the number of times the RUN light and TIMER light flash and check the contents of the error etc from the table See page 52 Turn off the air conditioner s power to terminate the Are other data displayed service mode If you are going to turn the power on again wait minute or longer after turning it off Change the wireless remote control settings based on the instructions in the table See page 50 13 SRK T 146 3 To count the number of flashes in the service mode count the number of flashes after the light lights up for 1 5 second initially start signal The time that the light lights up for 1 5 second start signal is not counted in the number of flashes n the case of current cut example stop code 42 The RUN light 10 s digit 4 time flash and the TIMER light 1 s digit 2 time flash 4 10 2 x 1 42 gt From the table read the instructions for error code 42 current cut 1 5 sec ON RUN light 10 s digit OFF ON TIMER light 1 s digit OFF 11 second interval 4 When in the service mode when the wireless remote control
139. p Setting temp lt 5 HIGH POWER AUTO MED LO Heatin Setting temp Indoor temp gt 5 C Setting temp Indoor temp 5 5 C u HIGH POWER AUTO Air flow direction is controlled according to the indoor temperature and setting temperature 1 When 3D auto operation starts Cooling Heating Flap Up down Swing Louver Wide fixed Center fixed 2 When Indoor temp Setting temp is 5 C during cooling and when Setting temp Indoor temp is lt 5 C dur ing heating the system switches to the following air flow direction control After the louver swings left and right symmetrically for 3 cycles control is switched to the control in 3 Cooling Heating Flap Horizontal blowing Fixed Slant forwardl blowing Fixed Louver Left right Swing 3 After the flap swings for 5 cycles control is switched to the control in 4 Cooling Heating Flap Louver Up down Swing Center Fixed 4 For 5 minutes the following air flow direction control is carried out am Cooling Heating Flap Horizontal blowing Fixed Slant forwardl blowing Fixed Louver Wide Fixed 5 After 5 minutes have passed the air flow direction 1s determined according to the indoor temperature and setting temperature Operation mode Air flow direction contorol Cooling Indoor temp Setting temp lt 2
140. power NO transistor module OK YES Is the space for installation of indoor and or outdoor unit enough Is there any short circuit of air on indoor and or outdoor unit At heating does the indoor fan motor run s the filter clogged s there any liquid flooding s there any anomalous sound on the compressor YES After resetting power for several NO times does it become normal YES Temporary noise may cause of anomaly If noise source can be found take countermeasure Defective outdoor PCB Replace Open the valve Defective outdoor PCB Replace Is the air inlet panel set correctly YES Are limit switch OK no Correction re set Defective limit switch YES Note 1 Check if the limit switch functions properly or not by seeing whether the lamp continues to blink or can be reset by pressing the limit swit ch by hand while the air inlet panel is removed Defective indoor control PCB 13 SRK T 146 8 Phenomenon observed after shortcircuit wire breakage on sensor a Indoor unit Operation Phenomenon Sensor mode Disconnected wire Room temperature r Release of continuous compressor operation command Continuous compressor operation command is not released sensor Continuous compressor Continuous compressor operation command is not released Continuous compressor operation command is not released is not released Release of c
141. quie e flow Designed specifically tor 410 77 Vacuum pump Charge hose Designed specifically for R410A When the system has remaining moisture inside or a leaky point the vacuum gauge indicator will rise Check the system for a leaky point and then draw air to create a vacuum again Check joint Pay attention to the following points in addition to the above for the R410A and compatible machines k ias m prevent a different oil from entering assign dedicated tools etc to each refrigerant type Under no circumstances must 06 35 1 4 gauge manifold and a charge hose in particular be shared with other refrigerant types R22 R407C etc 99 52 3 8 20 30 10212 Use a counterflow prevention adapter to prevent vacuum pump oil from entering the refrigerant system T Additional refrigerant charge Model SRC50 DXC18 1 Calculate a required refrigerant charge volume from the following table 2 Charging refrigerant Additional charge volume kg Refrigerant volume charged Installation s pipe length m e Since R410A refrigerant must be charged in the liquid phase you should charge it keeping the container per meter of refrigerant piping for shipment at the factory covered without additional cylinder upside down or using a refrigerant cylinder equipped with a siphon tube liquid pipe 96 35 kg refrigerant charge Charge refrigerant always from the liquid side service port with the ser
142. r PCB 2 Check coil wire resistance see page 58 YES Replace compressor Outdoor fan motor error Sua sie ue NO Is connector connection good Correct connector connection YES Is fan motor resistance value good Disconnect the fan motor connector then investigate YES the fan motor and outdoor PCB separately Replace outdoor fan motor Is the output of the ourdoor PCB NO normal YE Defective outdoor PCB Notes 1 See page 66 for the fan motor and outdoor PCB check proc edure 2 After making sure the fan motor and outdoor PCB are nor mal connect the connectors and confirm that the fan motor is turning If power is turned on while one or the other is broken Powersupplyreset down it could cause the other to break down also Power supply reset Replace fan motor If the NO isit normalized error persists after replacing the fan motor replace the outdoor PCB YES Malfunction by temporary noise Rotor lock Is output voltage applied to all 3 phases of power transistor YES Inspect compressor Check coil wire resistance See page 58 Check insulation resistance 1 or over 13 e SRK T 146 Defective compressor defective outdoor PCB Defective outdoor PCB e Check compressor wiring visually If check results are normal compressor is locked Are the service valve gas side NO opened YES Is the checked result of
143. r air temperature sensor outdoor heat exchanger sensor temperature Units C TIMER light 1 s digit RUN light 10 s digit Buzzer sound D NEN NIN I I ON J NS Yes sounds for 0 1 second als J I ore NO NO I to B A ox y I nlm w w e l CA A UJ ho 1 I 1 antl BRI wl wo I I NO NO I Uo I I oO No does not sound na S oly NINININI s N wl wi Wt W Ww S BUS ee D GO GO GO GO If no data are recorded error code is normal the display for each temperature information becomes as shown below Sensor name Sensor value displayed when the error code is normal Room temperature sensor Indoor heat exchanger sensor Outdoor air temperature sensor Outdoor heat exchanger sensor Example Outdoor heat exchanger temperature data 9 If the temperature is 0 the buzzer sounds If the temperature is Z0 the buzzer does not sound ON Buzzer sound OFF 1 5 sec ON RUN light 10 s digit OFF ON TIMER light 1 s digit OFF 11 second interval 13
144. r fan motor Rubber sleeve for fan motor amp compressor Electric heater Edom Defrost heater 230V 110W Remote control MEER Wireless remote control temperature control mE Microcomputer thermostat Operation display 255 RUN Green TIMER Yellow POWER Green 3D AUTO Green ECONO Blue Compressor overheat protection Overcurrent protection Frost protection Serial signal error protection Indoor fan motor error protection Heating overload protection High pressure control Cooling overload protection Refrigerant piping size O D Liquid line 6 35 1 4 Gas line 9 52 3 8 Connecting method Safety equipments E Uqidine 0S5 Gasime 040 _ Installation I e I dis Insulation for piping Necessary Both sides independent Max 10 Outdoor unit is higher Max 10 Outdoor unit is lower Drainhose MHoseconnectabe VP 16 20x2pcs DDampumpmaxWthegt o T j Interconnecting wires Size x Corenumber 1 5mm x 4 cores Including earth cable Terminal block Screw fixing type Pnumber JIPX0 1 1 IPX Standard accessories Mounting kit Clean filter Allergen clear filter x 1 Photocatalytic washable deodorizing filter x 1 Option parts o terface 5 Note 1 The data are measured at the following conditions The pipe length is 7 5m Indoor air temperature Outdoor air
145. r if the wireless remote control is lost or malfunctioning this button may be used to turn the unit on and off a Operation Push the button once to place the unit in the automatic mode Push it once more to turn the unit off b Details of operation The unit will go into the automatic mode in which it automatically determines from indoor temperature as detected by sensor whether to go into the cooling thermal dry or heating modes Indoor temperature speed Flap Louver Timer Switch operation mode setting Unit ON OFF button About 24 C ae 250 Auto Auto Continuous 26 C 3 Auto restart function a Auto restart function records the operational status of the air conditioner immediately prior to be switched off by a power cut and then automatically resumes operations after the power has been restored b The following settings will be cancelled Jumper wire J170 1 CNX1 FLAP LOUVER 1 CNX2 FLAP LOUVER SSS oo JF a LIO trr 1 Timer settings i HIGH POWER operation CNF 800400 TT 16102 16108 Ys 16108 Notes 1 Auto restart function is set at on when the air conditioner is shipped from the factory Consult with your dealer if this function needs to be switched off 2 When power failure ocurrs the timer setting is cancelled Once power is resumed reset the timer
146. ration 9v L L M8HS El 6 If not properly balanced the unit can be thrown off balance and fall 1 Delivery Deliver the unit as close as possible to the installation site before removing it from the packaging When you have to unpack the unit for a compelling reason before you haul it to the installation point hoist the unit with nylon slings or ropes and protection pads so that you may not damage the unit 2 Portage The right hand side of the unit as viewed from the front diffuser side is heavier A person carrying the right hand side must take heed of this fact A person carrying the left hand side must hold with his right hand the handle provided on the front panel of the unit and with his left hand the corner column section 3 Selecting the installation location Be careful of the following conditions and choose an installation place Where air is not trapped Where the installation fittings can be firmly installed e Where wind does not hinder the intake and outlet pipes Out of the heat range of other heat sources A place where stringent regulation of electric noises is applicable Where it is safe for the drain water to be discharged Where noise and hot air will not bother neighboring residents Where snow will not accumulate Where strong winds will not blow against the outlet pipe A place where no TV set or radio receiver is placed within 1m If electri
147. re minutes to see if the pressure drops Then raise the pressure to the specified level 4 15MPa and record the ambient temperature and the pressure d If no pressure drop is observed with an installation pressurized to the specified level and left for about one day it is acceptable When the ambient temperature fall 1 C the pressure also fall approximately 0 01MPa The pressure if changed should be compensated for If a pressure drop is observed in checking e and a d a leak exists somewhere Find a leak by applying bubble test liquid to welded parts and flare joints and repair it After repair conduct an air tightness test again 2 In conducting an air tightness test use nitrogen gas and pressurize the system with nitrogen gas from the gas side Do not use a medium other than nitrogen gas under any circumstances Service valve cap Compound pressure gauge Pressure gauge Liquid side Vacuuming begins Run the vacuum pump for at least one hour after the vacuum gauge shows 0 1MPa or lower 76cmHg or lower Vacuuming completed Confirm that the vacuum gauge indicator does not rise even if the system is left for one hour or more Vacuum gauge check lanes iacu i Securely tighten the service valve cap and the check joint blind nut after adjustment Gauge manifold Designed specifically for R410A Handle Hi Charge hose Designed specifically for R410A Vacuum pump adapter
148. repare on site Remote control cord 2 cores the insulation thickness in 1mm or more In case of embedding cord Erectrical box M4 screw 2 pieces In case of exposing cord Cord clamp if needed Installation procedure CD Open the cover of remote control and remove the screw under the buttons without fail 2 Remove the upper case of remote control Insert a flat blade screwdriver into the dented part of the upper part of the remote control and wrench slightly NC In case of embedding cord 3 Embed the erectrical box and remote control cord beforehand Control cord Erectrical box Prepare on site 7 4 Prepare two M4 screws recommended length is 12 16mm on site and install the lower case to erectrical box Choose either of the following two positions in fixing it with screws Upper part Upper part Tighten the screws after cutting off the thin part of screw mounting part Wiri Lower part d Wiring oulet 5 Connect the remote control cord to the terminal block N Connect the terminal of remote control X Y with the terminal of 4 screw x 2 Prepare on site indoor unit X Y X and Y are no polarity The thin part Upper CJ 6 Install the upper case as before so as not to catch up the remote control cord and tighten with the screws Lower case In case of exposing cord 3 You can pull out the remote control cord from le
149. rmation relates to Indoor unit model name SRK25ZMX S Outdoor unit model name SRC25ZMX SA If function includes heating Indicate the heating season the information relates to Indicated values should relate to one heating season at a time Include at least the heating season Average Function indicate if present Average mandatory cooling Yes Warmer if designated No heating Yes Colder if designated No Item symbol value unit Item symbol value class Design load Seasonal efficiency and energy efficiency class cooling i cooling SE heating Average heating Average SCOP A 418 A heating Warmer heating Warmer heating Colder heating Colder heating Average 10 C heating Average 10 C heating Warmer 2 C heating Warmer 2 C heating Colder 22 C heating Colder 22 C Declared capacity for cooling at indoor temperature 27 19 C and Declared energy efficiency ratio at indoor temperature 27 19 C and outdoor temperature Tj outdoor temperature Tj Tj 35 C 2 55 Tj 35 C Tj 30 C i Tj 30 C Tj 25 C Tj 25 C Declared capacity for heating Average season at indoor Declared coefficient of performance Average season at indoor temperature 20 C and outdoor temperature Tj temperature 20 C and outdoor temperature Tj Pdh COPd 250 Pdh j COPd Pdh i 550 Pdh j COPd Tj bivalent temperature Pdh Tj bivalent temperature COPd 2 50 Tj oper
150. rol refer to the instruction manual of wired remote control Switch ON the DIP switch SW2 2 Factory setting ON on the interface PCB Caution Wireless remote control attached to the indoor unit can be used in parallel after connecting the wired remote control However some of functions other than the basic functions such as RUN STOP Temperature Setting etc may not work properly and may have a mismatch between the display and the actual behavior Q Wiring connection between the interface and the wired remote control Installation and wiring of wired remote control A Install the wired remote control with reference to the attached instruction manual of wired remote control 0 3mm x 2 core cable should be used for the wiring of wired remote control O Maximum length of wiring is 600m If the length of wiring exceeds 100m change the size of cable as mentioned below 100m 200m 0 5mm X 2 core 300m or less 0 75mm2 X 2 core 400m or less 1 25mn X 2 core 600m or less 2 0mm X 2 However cable size connecting to the terminal of wired remote control should not exceed 0 5mm2 Accordingly if the size of connection cable exceeds 0 5mm2 be sure to downsize it to 0 5mm at the nearest section of the wired remote control and waterproof treatment should be done at the connecting section in order to avoid contact failure D Don t use the multi core cable to avoid malfunction B Keep the wiring of wired remote control away from groundin
151. rtain conditions Both groups are crucial for safety installation Read and understand them carefully After installation conduct the test operation of the device to check for any abnormalities Describe how to operate the device to the customer following the installation instruc tion manual Instruct the customer to keep this installation instruction for future reference WARING NCAUTION This device should be installed by the dealer where you purchase the device Provide ground connection or a licensed professional shop If the device is incorrectly installed by the customer it may result in electric shock or fire Install the device carefully following the installation instruction If the device is The ground line should never be connected to the gas supply piping the water supply piping the lightning conductor rod nor the telephone ground If the grounding is improper it may result in electric shock incorrectly installed it may result in electric shock or fire Do not install the device in the following locations Use the accessory parts and specified parts for installation If any parts that do not match the specifications are used it may result in electric shock or fire A person with the electrical service certification should conduct the service based on the Technical standards for electrical facilities Electrical Wiring Code and the installation instruction If the work is done incorrectly it may
152. s Sound power level indoor Sound power level outdoor Global warming potential Rated air flow indoor Rated air flow outdoor Contact details for obtaining Name and address of the manufacturer or of its authorised representative more information Mitsubishi Heavy Industries Air Conditioning Europe Ltd 7 Roundwood Avenue Stockley Park Uxbridge Middlesex UB11 1AX United Kingdom B RWAO00252 0 13 e SRK T 146 Model SRK35ZMX S Information to identify the model s to which the information relates to Indoor unit model name SRK35ZMX S Outdoor unit model name SRC35ZMX SA If function includes heating Indicate the heating season the information relates to Indicated values should relate to one heating season at a time Include at least the heating season Average Function indicate if present Average mandatory cooling Yes Warmer if designated No heating Yes Colder if designated No Item symbol value unit Item symbol value class Seasonal efficiency and energy efficiency class Pdesignc cooling SE heating Average Pdesignh kW heating Average heating Warmer heating Warmer heating Colder heating Colder heating Average 10 C heating Average 10 C heating Warmer 2 C heating Warmer 2 C heating Colder 22 C heating Colder 22 C Declared capacity for cooling at indoor temperature 27 19 C and Declared energy efficiency ratio at indoor temperature
153. s activated and inching prevention control is carried out with theninimum speed set at 40 rps d The outdoor fan is set on 2nd speed Protective control Normal operation 21 22 Outdoor air temperature C iii Reset conditions The outdoor air temperature TH2 is lower than 21 C 13 SRK T 146 h Heating low outdoor temperature protective control i Operating conditions When the outdoor air temperature TH2 is lower than 10 C or higher continues for 30 sec onds while the compressor command speed is other than 0 rps ii Detail of operation The lower limit compressor command speed is change as shown in the figure below Lower limit 45 rps psp Normal operation 10 Outdoor air temperature C iii Reset conditions When either of the following condition is satisfied 1 The outdoor air temperature TH2 becomes 7 2 compressor command speed 15 0 rps i _ Compressor overheat protection i Purpose It is designed to prevent deterioration of oil burnout of motor coil and other trouble resulting from the compressor overheat ii Detail of operation 1 Speeds are controlled with temperature detected by the sensor mounted on the discharge pipe Example Fuzzy After lapse of 3 min or over NENNEN 4 After lapse of 3 min or over ie 4 After lapse of 3 min or over Lower limit 90 100 110 Discharge pipe temperature
154. s for indoor unit Installation board Attached to the rear of the indoor unit Wireless remote control Remote control holder Tapping screws for installation board 4 X 25mm Wood screws for remote control holder 23 5 X 16mm Battery R03 AAA Micro 1 5V Air cleaning filters e G Filter holders Attached to the front panel of indoor unit Insulation 486 50 x 100 t3 Option parts Sealing plate Sleeve Inclination plate Putty Drain hose extension hose Piping cover for insulation of connection piping Necessary tools for the installation work Plus headed driver Knife Saw Tape measure Hammer Spanner wrench Torque wrench a Hole core drill 65mm in diameter Wrench key Hexagon 4m m i Desi ificall Flaring tool set ik HAE ica d Designed specifically Gas leak detector for R410A Gauge for projection adjustment s when flare is made by on conventional flare tool Pipe bender SELECTION OF INSTALLATION LOCATION Install at location that meets the following conditions after getting approval from the customer Indoor unit O Where there is no obstructions to the air flow and where the cooled and heated air can be evenly distributed OA solid place where the unit or the wall will not vibrate O A place where there will be enough space for servicing
155. s run during cooling and dry SO AND Drain pump is run during cooling dry and heating SEGANDANDS Drain pump is run during cooling dry heating and fan GANS Drain pump is run during cooling dry and fan REMAINING After cooling is stopped the fan does not perform extra operation After cooling is stopped the fan perform extra operation for half an hour lH Jae cooling is stopped the fan perform extra operation for an hour HOUR After cooling is stopped the fan perform extra operation for six hours NO REMAINING CO After heating is stopped or heating thermostat is OFF the fan does not perform extra operation jo5HUR heating is stopped or heating thermostat is OFF the fan perform extra operation for half an hour j HUR heating is stopped or heating thermostat is fan perform extra operation for two hours HOUR Afterheating is stopped or heating thermostat is OFF the fan perform extra operation for six hours REMAINING O During heating is stopped or heating thermostat is OFF the fan perform intermittent operation for five minutes zominUFF smi nLIN i i with low fan speed after twenty minutes OFF During heating is stopped or heating thermostat is OFF the fan perform intermittent operation for five minutes smi nOFF smi nN with low fan speed after five minutes OFF ava Duy
156. scharge pipe sensor temperature at the time the error code was displayed in the past Wireless remote control setting Indicates the number of occasions previous to the present Temperature setting the error display data are from 21 1 time previous previous time Only for indoor heat exchanger sensor 2 Wireless remote control setting Indicates the number of I occasions previous to the present Temperature setting the error display data are from 1 time previous previous time os 13 e SRK T 146 Example Wireless remote control setting Operation Fan speed Temperature Displayed data mode mode setting Displays the reason for the stop error code 4 times previous when an error was displayed Displays the reason for the stop error code 5 times previous when an error was displayed Displays the reason for the stop error code the previous time an error was displayed Displays the reason for the stop error code 2 times previous when an error was displayed Cooling MED Displays the reason for the stop error code 3 times previous when an error was displayed ii Stop data Wireless remote control setting Operation Displayed data mode Displays the reason for the stop stop code the previous time when the air conditioner was stopped by protective stop control Displays the reason for the stop stop code 2 times previous when the air conditioner was stopped by protective stop control 2 Ic Displays
157. se damage of fan fan motor or can cause performance degradation or can trigger anomalous stop of the unit due to rising of high pressure 1 Place the unit outlet side is turned to the wall 2 Install so the direction of the air from the blowing outlet will be perpendicular to the direction of the wind Wind direction Wind direction Over 500mm 5 Installation space mm e Walls surrounding the unit in the four sides are not Model SRC20 50 DXC09 18 acceptable 1 II III IV There must be a 1 meter or larger space in the above e When more than one unit are installed side by side provide a 250mm or wider interval between them as a service space In order to facilitate servicing of controllers please provide a sufficient space between units so that their top plates can be removed easily Where a danger of short circuiting exists install guide louvers When more than one unit are installed provide sufficient intake space consciously so that short circuiting may not Occur Where piling snow can bury the outdoor unit provide Outlet proper snow guards 12 100 75 Open Open 43 10 80 90 t4 20 Open 250 Open The height of a wall is 1200mm or less L1 6 Installation CD Anchor bolt fixed position Model SRC20 35 DXC09 12 Model SRC50 DXC18 111 6 510 158 4 89 510 201 m 24 3 24 3
158. sell color Embedded mounting X Y Terminal block Attach M3 screw with washer Wiring outlet Cut off the upper thin part of remote control lower case with a nipper or knife and grind burrs with a file etc In case of pulling out In case of pulling out from center from upper left Upper part kaman OO Lower case 0 Cr e Lower part Sheath Sheath Upper cace Upper cace Lower Wiring In case of pulling out from center Wiring In case of pulling out from upper left The peeling off length of sheath Pulling out from upper left Pulling out from center X wiring 215mm X wiring 170mm Y wiring 195mm Y wiring 190mm E e peeling off length of sheath Wall surface 120 Remote Tighten the screws after control cutting off the thin part of outline screw mounting part se Wiring Y 83 5 Electrical box Not included Wiring oulet 12x7 Slot hole 120 Installation hole 9 5x5 Slot hole 4places 1 Installation screw for remote control 18 Wiring specifications M4 Screw 2 pieces Unit mm 1 If the prolongation is over 100m change to the size below But wiring in the remote control case should be under 5 Change the wire size outside of the case according to wire connecting Waterproof treatment is necessary at the wire connecting section Be careful about contact failure Length Wiring thickne
159. settings operation mode fan speed mode temperature setting are set as shown in the following table and sent to the air conditioner unit the unit switches to display of service data i Self diagnosis data What are Self These are control data reasons for stops temperature at each sensor wireless remote control information diagnosis Data the time when there were error displays abnormal stops in the indoor unit in the past Data from up to 5 previous occasions are stored in memory Data older than the Sth previous occasion are erased The temperature setting indicates how many occasions previous to the present setting the error display data are and the operation mode and fan speed mode data show the type of data Wireless remote control setting Contents of output data Operation mode Fan mode ES the reason for stopping display in the past error code Cooling HI Dispays the room temperature sensor temperature at the time the error code was displayed in the past Displays the indoor heat exchanger sensor temperature at the time the error code was displayed in the past Displays the wireless remote control information at the time the error code was displayed in the past Displays the outdoor air temperature sensor temperature at the time the error code was displayed in the past d Displays the outdoor heat exchanger sensor temperature at the time the error code was displayed in the past AUTO Displays the di
160. side For outdoor unit installation and refrigerant piping please refer to page 23 Both RKY012A011 35ZMX S A wired remote control unit is supplied separately as an optional part When install the unit be sure to check whether the selection of installation place power supply specifications usage limitation piping length height differences between indoor and outdoor units power supply voltage and etc and installation spaces SAFETY PRECAUTIONS e Read the SAFETY PRECAUTIONS carefully first of all and strictly follow it during the installation work in order to protect yourself The precautionary items mentioned below are distinguished into two levels A WARNING and A CAUTION A WARNING Wrong installation would cause serious consequences such as injuries or death Z CAUTION Wrong installation might cause serious consequences depending on circumstances mentions the important items to protect your health and safety so strictly follow them by any means Be sure to confirm no anomaly on the equipment by commissioning after com pleted installation and explain the operating methods as well as the maintenance methods of this equipment to the user according to the owners manual Keep the installation manual together with owners manual at a place where any user can read at any time Moreover if necessary ask to hand them to a new user For installing qualified personnel take precautions i
161. side air intake sami Not possible 53 P Air filter Quality Quantity oS Polypropylene net washable x 2 Shock vibration absorber mE Rubber sleeve for fan motor Rubber sleeve for fan motor amp compressor Electric heater Edom Defrost heater 230V 110W Remote control MEER Wireless remote control temperature control mE Microcomputer thermostat Operation display 255 RUN Green TIMER Yellow POWER Green 3D AUTO Green ECONO Blue Compressor overheat protection Overcurrent protection Frost protection Serial signal error protection Indoor fan motor error protection Heating overload protection High pressure control Cooling overload protection Refrigerant piping size O D Liquid line 6 35 1 4 Gas line 9 52 3 8 Connecting method Safety equipments E Uqidine 0S5 Gasime 040 _ Installation I e I dis Insulation for piping Necessary Both sides independent Max 10 Outdoor unit is higher Max 10 Outdoor unit is lower Drainhose MHoseconnectabe VP 16 20x2pcs Drain pump maxiftheight Interconnecting wires Size x Core number 1 5mm x 4 cores Including earth cable Terminal block Screw fixing type Pnumber JIPXO 1 1 IPX j Standard accessories Mounting kit Clean filter Allergen clear filter x 1 Photocatalytic washable deodorizing filter x 1 Op
162. speed mode MED Error code on previous occasion HI AUTO O MED HI AUTO Discharge pipe sensor on previous occasion AUTO MED Error code on second previous occasion HI AUTO O MED Outdoor air temperature sensor on second previous occasion HI AUTO Discharge pipe sensor on second previous occasion AUTO MED Error code on third previous occasion HI AUTO O MED HI AUTO Discharge pipe sensor on third previous occasion AUTO MED Error code on fourth previous occasion HI AUTO LO MED HI AUTO AUTO MED Error code on fifth previous occasion Cooling Room temperature sensor on previous occasion Indoor heat exchanger sensor 1 on previous occasion Wireless remote control information on previous occasion Outdoor air temperature sensor on previous occasion Heating Outdoor heat exchanger sensor on previous occasion 26 Cooling Cooling Room temperature sensor on second previous occasion Indoor heat exchanger sensor 1 on second previous occasion N N en Wireless remote control information on second previous occasion Heating Outdoor heat exchanger sensor on second previous occasion 27 Cooling Cooling Room temperature sensor on third previous occasion Indoor heat exchanger sensor 1 on third previous occasion N un Wireless remote control information on third previous occasion Outdoor air tempera
163. ss 100 to 200m Under 300m 0 75mm2x2 cores 1 2bmm x2 cores Under 400m Under 600m 2 0mm x 2 cores PJZ000Z295 Ol 88cZ2000VMUH DISPLAY 2 M LM WRELESS 12 CNE PRINTED CNX1 CIRCUIT BACK UP SW o Thi 5 2r CNG CNX2 ZX Th22 3 CNY I 1 k TE LS INTERFACEKIT 5 SC BIKN E we i i 22 my Y G G U Va WH S N 1 2 ES F 9 HEAT RD J asoy CNU MH M EXCHANGER 3 15A 5 LY BK L FM Power source a sequo Phase 220 240V 50Hz 5 TO OUTDOOR UNIT A E POWER WIRES 3 SIGNAL WIRE e J L HEAT EXCHANGER Item Description CNE CNY Connector Fan motor oM Flap motor Louver motor IM Inlet motor Thi Room temp sensor Th212 Heal exch sensor LS Limit switch DS Diode stack F Fuse Terminal block Va Varistor Color Marks Mark Color BK Black BL RD Red WH White Y Yellow Y G Yellow Green S XINZSE S XINZSZ S XINZOZMMHS SI PON syun 1 19191
164. sufficient space can result in accident such as personal injury due to falling from the installation place For installation work be careful not to get injured with the heat exchanger piping flare portion or screws etc Be sure to insulate the refrigerant pipes so as not to condense the ambient air moisture on them Insufficient insulation can cause condensation which can lead to moisture damage on the ceiling floor furniture and any other valuables When perform the air conditioner operation cooling or drying opera tion in which ventilator is installed in the room In this case using the air conditioner in parallel with the ventilator there is the possibility that drain water may backflow in accordance with the room lapse into the negative pressure status Therefore set up the opening port such as incorporate the air into the room that may appropriate to ventila tion For example Open the door a little In addition just as above so set up the opening port if the room lapse into negative pressure status due to register of the wind for the high rise apartment etc Be sure to perform air tightness test by pressurizing with nitrogen gas after completed refrigerant piping work If the density of refrigerant exceeds the limit in the event of refrigerant leakage in the small room lack of oxygen can occur which can cause Serious accidents Do not install the unit in the locations listed below ocations where carbon fiber met
165. t be pushed up further into the box Install the service panel correctly Incorrect installation may result in overheating and fire Be sure to switch off the power supply in the event of installation inspection or servicing If the power supply is not shut off there is a risk of electric shocks unit failure or personal injury due to the unexpected start of fan Be sure to wear protective goggles and gloves while at work Earth leakage breaker must be installed If the earth leakage breaker is not installed it can cause electric shocks Do not processing splice the power cord or share a socket with other power plugs This may cause fire or electric shock due to defecting contact defecting insulation and over current etc Do not bundling winding or processing for the power cord Or do not deforming the power plug due to tread it This may cause fire or heating N WARNING Do not vent R410A into the atmosphere R410A is a fluorinated greenhouse gas covered by the Kyoto Protocol with Groval Warming Potential GWP 1975 Do not run the unit with removed panels or protections Touching rotating equipments hot surfaces or high voltage parts can cause personal injury due to entrapment burn or electric shocks Do not perform any change of protective device itself or its setup condition The forced operation by short circuiting protective device of pressure switch and temperature controller or the use of non specif
166. tallation of an impulse withstanding type earth leakage breaker is necessary A failure to install an earth leakage breaker can result in an accident such as an electric shock or a fire Do not turn on the power until the electrical work is completed Do not use a condensive capacitor for power factor improvement under any circumstances It dose not improve power factor while it can cause an abnormal overheat accident e For power supply cables use conduits Do not lay electronic control cables wireless remote control and signaling wires and other cables together outside the unit Laying them together can result in the malfunctioning or a failure of the unit due to electric noises e Fasten cables so that may not touch the piping etc e When cables are connected make sure that all electrical components within the electrical component box are free of loose connector coupling or terminal connection and then attach the cover securely Improper cover attachment can result in malfunctioning or a failure of the unit if water penetrates into the box e Never use a shield cable e SRC ZMA S SRC ZMXA S and DXC ZMA S complies with the DRED Demand Response Enabling Devices standard AS NZS4755 3 1 and supports demand response modes 1 2 and 3 DRM1 2 and 3 Since the air conditioner limits the electric power or energy by receiving the DRED input signal the sense of cooling operation or heating operation may deteriorate over time The outdoor
167. temperature Standards I805151 T1 Heating o6 76 6 2 This air conditioner is manufactured and tested in conformity with the ISO 3 Sound level indicates the value in an anechoic chamber During operation these values are somewhat higher due to ambient conditions 4 Select the breaker size according to the own national standard RWAO000Z252 N 8S80Z000A H Symbol u Model202535 09 52 3 8 Flare Gas piping Model5060 127 1 2 Flare B Liquid piping 6 35 1 4 Flare D jHoeonwalforlftrarpping 069 F QjOMefrwig FO G Outletforpiping onbothside Wireless remote control 60 24 Wired remote control Option 167 Outlet for down piping Refer to the above view Terminal block l L L A E Service space 100 Service space Service space 48 9 g e CN 72 A g Notes 1 The model name label is attached on the underside of the panel o 42 1 E 2 It takes the interface kit SC BIKN E VA XY to connect the wired remote controller D 08 Space for installation and service when viewing from the front syun Joopu 1 SNOISN3NIG HOlIdH3 LX3 S XINZSE S XINZSZ S XINZOZMMHS SI PON 9v L L MHS El 390 6 N MW BLA Seas XM 290 CNS E M D 390 6 780 ccOZ000A0UY Symbol Service valve connection gas side 9 52 3 8
168. tes 13 e SRK T 146 k Current cut 1 p q i Purpose Inverter is protected from overcurrent ii Detail of operation Output current from the inverter is monitored with a shunt resistor and if the current exceeds the setting value the compressor is stopped immediately Operation starts again after a delay time of 3 minutes Outdoor unit failure This is a function for determining when there is trouble with the outdoor unit during air conditioning The compressor is stopped if any one of the following in item 1 ii is satisfied Once the unit is stopped by this function it is not restarted 1 When the input current is measured at 1 A or less for 3 continuous minutes or more ii If the outdoor unit sends a 0 rps signal to the indoor unit 3 times or more within 20 minutes of the power being turned on Indoor fan motor protection When the air conditioner is operating and the indoor fan motor is turned ON if the indoor fan motor has operated at 300 or under for more than 30 seconds the unit enters first in the stop mode and then stops the entire system Serial signal transmission error protection i Purpose Prevents malfunction resulting from error on the indoor lt gt outdoor signals ii Detail of operation If the compressor is operating and a serial signal cannot be received from the indoor control with outdoor control having serial signals continues for 7 minute and 35 se
169. th previous occasion Stop code on seventh previous occasion o ooo L Stop code on eighth previous occasion ooo 29 Stop code on ninth previous occasion 30 a a J udgment Note 1 In the case of indoor heat exchanger sensor 2 match from 26 to 30 the temperature setting of wireless remote control Refor to page 50 13 e SRK T 146 7 Inspection procedures corresponding to detail of trouble Sensor error Broken sensor wire connector poor connection YES NO Is sensor resistance value good YES Replace PCB Discharge pipe sensor temperature characteristics Sensor temperature characteristics Room temp indoor heat exchanger temp out door heat exchanger temp outdoor air temp Broken wire 180 Broken wire 30 ALL LL LLL 160 p 140 s e G 120 lt 20 j A P 100 S S 15 5 2d m LL 40 5 20 Short circuit 0 Short circuit Temperature C Temperature C Defective fan motor connector poor Indoor fan motor error connection defective indoor PCB Is connector connection good Correct connector connection YES NO Is fan motor resistance value good Disconnect the fan motor connector then investigate YES the fan motor and indoor PCB separately Replace indoor fan motor Is the output of the indoor PCB NO normal Notes 1 See page 63 for the fan motor and indoor PCB check proc YES _ edure 2 After mak
170. the indoor unit being detected correctly Indoorunits Sot mS Indoor fan motor is faulty When the indoor unit s fan motor is detected to be running Abnormal Connector connections are poor at 300 min or lower speed with the fan motor in the ON Indoor PCB is faulty condition while the air conditioner is running M Indoor heat exchanger sensor Papi heat Fd sensor wire is When a Bp up of 28 C or Sis is sensed is abnormal anomalous stop isconnected continuously for 40 minutes during heating operation Connector connections are poor the compressor stops 8 time flash 84 5 8 Anti condensation control High humidity Sone aor Anti condensation prevention control is operating Humidity sensor is faulty Anti Indoor unit fan speed drops When the anti frost control operates and the compressor Indoor heat exchanger sensor is broken wire stops during cooling operation Heating overload operation Heating high pressure control Indoor unit fan speed drops Indoor heat exchanger sensor is short circuit When high pressure control operates during heating operation and the compressor stops oo BH 13 SRK T 146 Notes 1 The number of flashes when in the Service Mode do not include the 1 5 second period when the lights light up at first start signal See the example shown below n the case of current cut example stop code 42 The RUN light 10 s digit 4 time flash and the TIMER
171. the reason for the stop stop code 3 times previous when the air conditioner was stopped by protective stop control 4 times previous when the air conditioner was stopped by protective stop control Displays the reason for the stop stop code Displays the reason for the stop stop code 5 times previous when the air conditioner was stopped by protective stop control Cooling Displays the reason for the stop stop code 6 times previous when the air conditioner was stopped by protective stop control Displays the reason for the stop Displays the reason for the stop stop code 8 times previous when the air conditioner was stopped by protective stop control Displays the reason for the stop stop code 9 times previous when the air conditioner was stopped by protective stop control Displays the reason for the stop stop code 10 times previous when the air conditioner was stopped by protective stop control stop code 7 times previous when the air conditioner was stopped by protective stop control 13 SRK T 146 c Error code stop code table Assignment of error codes and stop codes is done in common for all models Number of flashes when in service mode Stop coad or Occurrence conditions Error coad Error Auto display recovery Can not receive signals for 35 Power supply is faulty When 35 seconds passes without seconds Power supply cables and signal lines are improperly wired communications sign
172. those prescribed by us are used It may cause water leaks electric shocks fire and personal injury Install the unit in a location with good support Unsuitable installation locations can cause the unit to fall and cause material damage and personal injury Ventilate the working area well in the event of refrigerant leakage during installation If the refrigerant comes into contact with naked flames poisonous gas is produced When installing in small rooms take prevention measures not to exceed the density limit of refrigerant in the event of leakage referred by the formula accordance with 1505149 If the density of refrigerant exceeds the limit please consult the dealer and install the ventilation system otherwise lack of oxygen can occur which can cause serious accident After completed installation check that no refrigerant leaks from the system If refrigerant leaks into the room and comes into contact with an oven or other hot surface poisonous gas is produced Use the prescribed pipes flare nuts and tools for R410A Using existing parts for R22 or R407C can cause the unit failure and serious accidents due to burst of the refrigerant circuit Do not put the drainage pipe directly into drainage channels where poisonous gases such as sulphide gas can occur Poisonous gases will flow into the room through drainage pipe and seriously affect the users health and safety This can also cause the corrosion of the indoor unit
173. tion parts o terface 5 Note 1 The data are measured at the following conditions The pipe length is 7 5m Indoor air temperature Outdoor air temperature Standards I805151 T1 Heating 76 6 2 This air conditioner is manufactured and tested in conformity with the ISO 3 Sound level indicates the value in an anechoic chamber During operation these values are somewhat higher due to ambient conditions 4 Select the breaker size according to the own national standard RWA000Z2524 13 SRK T 146 SRK25ZMX S Indoor unit SRK25ZMX S Outdoor unit SRC25ZMX SA Single phase 220 240V 50Hz 2 55 0 9 Min 3 2 Max Operation Power source Nominal cooling capacity range Nominal heating capacity range 3 13 0 9 Min 4 7 Max Power 0 49 0 19 0 82 consumption 0 595 0 23 1 12 Max power consumption 1 65 Running 2 5 2 4 2 3 220 230 240 V current 3 1 2 9 2 8 220 230 240 V Inrush current max current 3 1 2 9 2 8 220 230 240 V Max 8 Power factor 90 88 EER P 5 20 5 26 I dB A m Silent mode sound pressure level Cooling 41 Heating 42 595 x 780 62 x 290 Munsell color 8 0Y 9 3 0 1 near equivalent 4 2Y 7 5 1 1 near equivalent Netweigt 35 5 kg Compressor type amp Q ty m T RN B5077MDEf Rotary type x 1 Compressor motor Starting method PAW PE 0 75 Inverter driven kg gt data
174. to cancel the HIGH POWER operation HIGH POWER operation is not available during the DRY and the program timer operations When HIGH POWER operation is set after ON TIMER operation HIGH POWER operation will start from the set time When the following operation are set HIGH POWER operation will be canceled D When the HI POWER ECONO button is pressed again 4 When the 3D AUTO botton is pressed 2 When the operation mode is changed 5 When the SILENT botton is pressed 3 When it has been 15 minutes since HIGH POWER operation has started 6 When the NIGHT SETBACK botton is pressed Not operable while the air conditioner is OFF After HIGH POWER operation the sound of refrigerant flowing may be heard 7 Economy operation Pressing the HI POWER ECONO button initiate a soft operation with the power suppressed in order to avoid an excessive cooling or heating The unit operate 1 5 higher than the setting temperature during cooling or 2 5 C lower than that during heating The remote control displays ECONO mark and the FAN SPEED display disappears a It will go into ECONOMY operation at the next time the air conditioner runs in the following cases D When the air conditioner is stopped by ON OFF button during ECONOMY operation 2 When the air conditioner is stopped in SLEEP or OFF TIMER operation during ECONOMY operation 3 When the operation is retrieved from CLEAN or ALLERGEN CLEAR operation b When the following operation are set
175. ton Consult the technical data etc for each control details It is possible to finish above setting on the way and unfinished change of setting is unavailable O Initial settings Automatic criterion Stop air conditioner and press SET gt MODE buttons at the same time for over three seconds FUNCTION SET Remote control function Function 01 bv ESP SET setting dv ESP VALID Validate setting of ESP External Static Pressure divi ESP NYALD Invalidate setting of ESP ALTO RUM H AUTO RUN DFF Automatical operation is impossible do PALA VALID O d DA INVALID Temperature setting button is not working AUTO RUN SET 03 TEMP SU MODE SW do t VALID O da EE INVALID Mode button is not working ON OFF SW o WALID O dS INVALID On Off button is not working 106 IFAN SPEED SU d 2 VALID 52 INVALID Fan speed button is not working dE VALID do INVALID Louver button is not working LOUVER SW og TT TIMER SW dn 2 VALID O dhE INVALID _ Timer button is not working 09 EVSENSOR SET EJSENSUR OFF Remote thermistor is not working EJSEHSU RUN Remote thermistor is working EJSEMS R 3 0 Remote thermistor is working and to be set for producing 3 0 C increase in temperature EJSENSUR 2 0 Remote thermistor
176. ture sensor on third previous occasion Heating Outdoor heat exchanger sensor on third previous occasion 28 Cooling Cooling Room temperature sensor on fourth previous occasion Indoor heat exchanger sensor 1 on fourth previous occasion JE Wireless remote control information on fourth previous occasion Outdoor air temperature sensor on fourth previous occasion Heating Outdoor heat exchanger sensor on fourth previous occasion Discharge pipe sensor on fourth previous occasion S 29 Cooling Indoor heat exchanger sensor 2 on fouth occasion Cooling HI Room temperature sensor on fifth previous occasion AUTO Indoor heat exchanger sensor 1 on fifth previous occasion 25 LO Wireless remote control information on fifth previous occasion 8 Outdoor air temperature sensor on fifth previous occasion c r HI Outdoor heat exchanger sensor on fifth previous occasion AUTO Discharge pipe sensor on fifth previous occasion pem AUTO Indoor heat sensor 2 on fifth occasion Indoorheatexchangersensor2onfiflhoccasion Stop code on previous occasion o o oo Cooling Heating 22 23 24 5 26 27 28 Stop code on second previous occasion Stop code on third previous occasion Stop code on fourth previous occasion ooo Stop code on fifth previous occasion o LJ f Stop code on six
177. uch as water leaks installation 3mm electric shocks fire and personal injury as a result of a system malfunction Do not If the refrigerant comes into contact with naked flames poisonous gas is produced Arrange the wiring in the control box so that it cannot be pushed up carry out the installation and maintenance work except the by qualified installer e Use the prescribed pipes flare nuts and tools for R410A further into the box Install the service panel correctly e Install the system in full accordance with the installation manual Using existing parts for R22 or R407C can cause the unit failure and serious Incorrect installation may result in overheating and fire Incorrect installation may cause bursts personal injury water leaks electric accidents due to burst of the refrigerant circuit e Use the prescribed cables for electrical connection tighten the cables shocks and fire e Tighten the flare nut by torque wrench with specified method securely in terminal block and relieve the cables correctly to prevent e Be sure to use only for household and residence If the flare nut were tightened with excess torque this may cause burst and overloading the terminal blocks If this appliance is installed in inferior environment such as machine shop and etc refrigerant leakage after a long period Loose connections or cable mountings can cause anomalous heat production or fire it can cause malfunction Do not open the service valves for liqu
178. und lead Incorrect grounding can cause unit faults such as electric shocks due to short circuiting Use the circuit breaker for all pole correct capacity Circuit breaker Take care when carrying the unit by hand When perform the air conditioner operation cooling or drying operation should be the one that disconnect all poles under over current If the unit weights more than 20kg it must be carried by two or more persons Do in which ventilator is installed in the room In this case using the air Using the incorrect circuit breaker it can cause the unit malfunction and fire not carry by the plastic straps always use the carry handle when carrying the unit conditioner in parallel with the ventilator there is the possibility that Install isolator or disconnect switch on the power supply wiring in by hand Use gloves to minimize the risk of cuts by the aluminum fins drain water may backflow in accordance with the room lapse into the accordance with the local codes and regulations Dispose of any packing materials correctly negative pressure status Therefore set up the opening port such as The isolator should be locked in OFF state in accordance with EN60204 1 Any remaining packing materials can cause personal injury as it contains nails and incorporate the air into the room that may appropriate to ventilation For e After maintenance all wiring wiring ties and the like should be returned wood And to avoid danger of suffocatio
179. utdoor unit blows directly to an animal or Instruct the user to keep the surroundings clean e Vehicles and ships plants The outlet air can affect adversely to the plant etc e Do not use the base flame for outdoor unit which is corroded or damaged e Locations where cosmetic or special sprays are often used e Locations where vibration can be amplified and transmitted due to insufficient due to long periods of operation e Locations with direct exposure of oil mist and steam such as kitchen and strength of structure Using an old and damage base flame can cause the unit falling down and cause machine plant e Locations where vibration and operation sound generated by the outdoor unit personal injury e Locations where any machines which generate high frequency harmonics are can affect seriously on the wall or at the place near bed room Do not use any materials other than a fuse with the correct rating in the used e Locations where an equipment affected by high harmonics is placed TV set or location where fuses are to be used e Locations with salty atmospheres such as coastlines radio receiver is placed within 1m Connecting the circuit with copper wire or other metal thread can cause unit e ocations with heavy snow If installed be sure to provide base flame and snow e Locations where drainage cannot run off safely failure and fire hood mentioned in the manual It can affect surrounding environment and cause a claim e Do not t
180. vents anomalous high pressure operation during cooling ii Detector Outdoor heat exchanger sensor TH1 iii Detail of operation Model SRK20 35 Outdoor heat exchanger temperature C Example Fuzzy After lapse of 30 sec or over After lapse of 30 sec or over lower limit speed 30 rps After lapse of 30 sec or over A B C Outdoor heat exchanger temperature C Notes 1 When the outdoor heat exchanger temperature is in the range of A C C the speed is reduced by 6 rps at each 30 seconds 2 When the temperature is C C or higher the compressor is stopped 3 When the outdoor heat exchanger temperature is in the range of A C C if the compressor command speed is been maintained and the operation has continued for more than 30 seconds at the same speed it returns to the normal cooling operation d Cooling low outdoor temperature protective control i Operating conditions When the outdoor air temperature TH2 is 22 C or lower continues for 20 seconds while the compressor command speed is other than 0 rps i Detail of operation 1 The lower limit of the compressor command speed is set to 44 30 rps and even if the speed becomes lower than 44 30 rps the speed is kept to 44 30 rps However when the thermo OFF the speed is reduced to 0 rps 2 The upper limit of the compressor command speed is set to 50 60 rps and even if the calculated result becomes higher than that
181. vice valve shut When you find it difficult to charge a required amount fully open the outdoor unit valves on both liquid and gas sides and CAES aa charge refrigerant from the gas suction side service port while running the unit in the cooling mode In e This unit contains factory charged refrigerant covering 15m of refrigerant piping and additional refrigerant charge on doing so care must be taken so that refrigerant may be discharged from the cylinder in the liquid phase the installation site is not required for an installation with up to 15m refrigerant piping I e Be all the time When the cylinder valve is throttled down or a dedicated conversion tool to change liquid When refrigerant piping exceeds 15m additionally charge an amount calculated from the pipe length and the above phase refrigerant into mist is used to protect the compressor however adjust charge conditions so that table for the portion in excess of 15m refrigerant will gasify upon entering the unit Formula to calculate the volume of additional refrigerant required n charging refrigerant always charge a calculated volume by using a scale to measure the charge volume Additional charge volume kg Main length m Factory charged volume 15 m x 0 02 kg m When refrigerant is charged with the unit being run complete a charge operation within 30minutes When an additional charge volume calculation result is negative it is not necess

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