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1. EM i TT Mime MIF THERMISTOR SUB COOLING HEAT EXCHANGER R5T THERMISTOR INLET PIPE OF ACCUMULATOR i gt BA 4 i El ci nea gt a 8 ATT KT cemento wa SENSOR EN ar al o oy HIGH PRESS Ry SE StAPH P DN ELECTRONIC EXPANSION VALVE 12 EH ELECTRONIC EXPANSION VALVE o pm vie g zza In O Ofo T gt AWAY VALVE o 5 135 a E Gi THERMISTOR ATR IT a Li Taj RIT Al z a 5 hi A SOLENOID VALVE HOT GAS BYPASS BIN p 115 WITE THERMISTOR COIL HIIT CT R4T bd L r THERMSTOR LIQUID PIPE Ke LE U LI COMP LEAD RT V RE EE OE TS WIRE STD2 o e o COMPRESSOR STDI PRESSURE SENSOR LOW PRESS COMPRESSOR INVERTER Sa STD1 wej STD2 STNPL SOLENOID VALVE MC ACCUMULATOR OIL RETURN CRANK CASE HEATER WIRE CRANK CASE HEATER W 125 EHC CRANK CASE HEATER WIRE Tour E2HC THERMISTOR SUCTION PIPE GGNB HERB HERELHYHERTER e ERNEST CONE tEn REET MIC RZT MC 100 7 COMP LEAD WIRE STD1 COMP LEAD WIRE INVERTER 71 Refirgerant Circuit S2. SilN34 817 Refrigerant Circuit RXYQ8PA CHECK VALVE N eccrine EXPANSION VALVE ELECTRONIC Ze O EXPANSION VALVE FILTER PRESSURE REGULATING VALVE CHECK VALVE TYPE 10 ACCUMULATOR ka FILTER e ES FILTER rss HIGH PRESSURE OY sm W 0 16 XS0LEN0ID S1PH O VALVE LG CHECK VALVE Rumm HIGH PRESSURE 1 28 S1NPH CAPILLARY Mi el S1NPH TUBE GU 7 Deech CAPILLARY TUBE FILTEREJ UT HE FILTER 3 1 amp X SOLENOID LON PRESSURE i VALYE SENSOR lt STOP VALVE WITH SERVICE PORT 6 7 9mm FLARE CONNECTION 3D061121A Refirgerant Circuit 61 SilN34 817 11 18 Refrigerant Circuit RXYQ10PA 12PA
3. CHECK VALVE N ELECTRONIC CN W um PRESSURE REGULATING VALVE ELECTROIC EXPANSION i Oo VALVE 19 ACCUMULATOR Or FILTERE FILTER FOUR W LA LIE OG a PRESSURE SENSOR S2PH SOLENOID ve Og O CHECK VALVE 77 CHECK VALVE tZ FILTER I FILTER I HIGH PRESSURE E Q HLGH PRESSURE CAPILLARY TUBE m O 24 FILTER 3 SENSOR IC F VO COMPRESSOR gt FILTER A rw CAPILLARY TUBE CAPILLARY TUBE GQ eee FILTER N 1 6 XSOLENOID VALVE LOW PRESSURE SENSOR Eng Y 0 N STOP VALVE WOTH SERVICE PORT lt P 7 9hm FLARE CONNECTION Wy se oT i 3D061122A High Pressure Switch Refirgerant Circuit 63 12 18 SilN34 817 Refrigerant Circuit RXYQ14PA 16PA 18PA CHECK VALVE D S ELECTRONIC EXPANSION VALVE O R FILTE ELECTRONIC d 10 ACCUMULATOR EXPANSI
4. 8 HIGH PRESSURE sol MEET G um Be PS SENSOR CAPILLARY TUBE i a m m FILTER w j CAPILLARY TUBE CAPILLARY TUBE Ze FILTER Se J BEN pr 2 8X SOLENOID VALVE LOW PRESSURE SeNSoR SENPLL T SA Y STD1 m STOP VALVE WOTH SERVICE PORT PY 9mm FLARE CONNECTION ST SY as 3D061122A 340 Appendix 3 18 SilN34 817 Functional Parts Layout 2 Functional Parts Layout 2 1 RXYQ5PA Plan Accumulator ass y A Heat exchanger SOLENOID VALVE ACCUMULATOR OIL RETURN Wig Vi o 125 o SOLENOID VALVE INJECTION 145 4 WAY VALVE i EM VALE 135 NI y KR D SOLENOID VALVE HOT GAS BYPASS SA PRESSURE SWITCH Mis f A nw HIGH PRESSURE PROTECTION S1PH e gt A asg 1 e PRESSURE SENSOR LOW PRESS EE J SINPL THERMSTOR MIC DISCHARGE PIPE RI Front View FAN MOTOR MIF THERMISTOR ACCUMULATOR Pressure switch High pressure protection R7T PRESSURE SENSOR S1PH HIGH PRESS SINPH 4 way valve Y3S THERMISTOR AIR RIT Solenoid valve Hot gas bypass THERMISTOR SUCTION PIPE Y1s RZT ELECTRONIC EXPANSION VALVE ME THERMISTOR COIL RAT Solenoid valve Accumulator oil return Y28 THERMISTOR F iz BIR CRANK CASE HEATER WIRE RET ETHC COMPRESSOR INVERTER MC Liquid pipe Refirgerant Circuit 67 4 18 Troubles
5. 1 18 December 4 2009 Reliable technology ensures maximum customer satisfaction x M 09011 Correction in Service manual SilN34 817 VRV3 RXYQ5 54PAY6 EM Notice There are some corrections in the service manual of SiIN34 817 The corrections will be revised in the next issue M Applicable Book and Page SIIN34 81 7 P340 67 336 308 127 90 63 61 63 65 70 71 174 203 P184 267 M Detail For correct information refer to the following pages 2 18 Piping Diagrams SilN34 817 RXYQ10PA 12PAY6 CHECK VALVE z PASION HALE ELECTRONIC EX Gg FILTER PRESSURE REGULATING VALVE ELECTROIC EXPANSION VALVE ACCUMULATOR FILTER ft FILTER FOUR WAY VALVE SENPAHIGH PRESSURE SENSOR ozum HECK VALVE tZ CHECK VALVE 17 FILTER FILTER 3 3 HIGH PRESSURE CIS E
6. E Es ELECTRONIC EXPANSION VALVE ME 4 WAY VALVE VK THERMISTOR AIR D SOLENOID VALVE HOT GAS BYPASS ms THEAMISTOR COIL D THERMISTOR LIQUID PIPE D CRANK CASE HEATER WIRE EHC COMPRESSOR STD1 WC EE SIE Nec COMPRESSOR INVERTER Hu EM EAR Elo PRESSURE SENSOR LOW PRESS DL SOLENOID VALVE ACCUMULATOR OIL RETURN 425 THERMISTOR SUCTION PIPE EI MC CRANK CASE COMP LEAD HEATER WIRE COMP LEAD WIRE INVERTER WIRE STD1 70 Refirgerant Circuit 14 18 SilN34 817 Functional Parts Layout 2 5 RXYQ14PA 16PA 18PA Plan af KS o Heat exchanger PDT OC N a di e YAMADA Accumulator dE e al a PAS 251 AN Ul PRESSURE SWITCH HIGH PRESSURE PROTECTION S3PH PRESSURE SWITCH THERMISTOR MIC DISCHARGE PIPE HIGH PRESSURE PR XECTION THERMISTOR M3C DISCHARGE PIPE R31T PRESSURE SWITCH R33T HIGH PRESSURE PROTECTION THERMISTOR M2C DISCHARGE PIPE He 1321 Front View FAN MOTOR FAN MOTOR
7. ON PRESSURE REGULATING En VALVE VALVE zs FILTER war O FILTER EXCHANGER WAY VALVE Ber HIGH PRESSURE SENSOR ON SZL HZ CHECK VALVE VZ CHECK VALVE EZCHECK VALVE FILTER LTE FILTER HIGH PRESSURE zam S HIGH PRESSURE EE HIGH PRESSURE oo E SWITCH um SNITCH prep SWITCH J FILTER IO AR INV W di FILTER ES H a IX SOLENOID VALVE T LOW PRESSURE S SENSOR E STOP VALVE WITH SERVICE PORT 7 9mm F ARE CONNECTION S1 N P L 3D061123A Refirgerant Circuit 65 13 18 Functional Parts Layout SilN34 817 2 4 RXYQ12PA Plan AT Heat exchanger J e ei ED lt A 4 PRESSURE SWITCH HIGH PRESSURE PROTECTION Accumulator SPH JA PRESSURE SWITCH HIGH PRESSURE PROTECTION BEI THERMISTOR MIC DISCHARGE PIPE RT THERMISTOR M2C DISCHARGE PIPE RIT Front View FAN MOTOR FAN MOTOR WA MA THERMISTOR SUB COOLING HEAT EXCHANGER RST THERMISTOR INLET PIPE OF ACCUMULATOR oot Sofa e PRESSURE SENSOR m e HIGH PRESS er ASS AAA FM N W DTS SPA ELECTRONIC EXPANSION VALV
8. ange 1 Red 2 O Measuring points Yellow 3 1 6 2 6 Black 4 O 3 6 5 4 6 Gray 6 O A1P Troubleshooting 267
9. e 2 refer to information in tables shown on the following page onward Setting item Content and objective of setting Overview of setting procedure m COOL HEAT selection methods are possible to select from the following 1 Control by each outdoor unit using the y jn order to use the COOL HEAT selection indoor unit remote controller remote controller set the DS1 1 on the 2 Control by each outdoor unit using the i Setting of COOL COOL HEAT selection remote outdoor unit PC board to OUT 1 HEAT selection controller m For outdoor unit group control set the 1 3 Batch control by outdoor unit group system to BATCH MASTER or SLAVE while in Setting mode 1 Then make using the indoor unit remote controller setting of COOL HEAT batch address 4 Batch control by outdoor unit group 9 using the COOL HEAT selection remote controller A Use external input to step down the upper Use the External control adaptor for limit of the fan factory set to Step 8 outdoor unit providing low noise level Set to External control adaptor for outdoor 1 Mode 1 Step 6 or lower unit with No 12 of Setting mode 2 and 2 Mode 2 Step 5 or lower select the mode with No 25 3 Mode 3 Step 4 or lower If necessary set the Capacity priority setting to ON with No 29 2 Setting of low noise B The low noise operation aforementioned is operation 1 E automatic low noise Make this sett
10. e superheat of inverter compressor DSHs Discharge pipe superheat of standard compressor EV Opening of electronic expansion valve EV1 Y1E Electronic expansion valve for main heat exchanger EV2 Y2E Electronic expansion valve for sub coolig heat exchanger TDi s Value of INV compressor discharge pipe temperature R31T compensated with N Zem outdoor air temperature HHTD Value of STD compressor discharge pipe temperature R32T R33T compensated with outdoor air temperature Pc S1NPF Value detected by high pressure sensor Pe S1NPL Value detected by low pressure sensor SH Evaporator outlet superheat SHS Target evaporator outlet superheat SVO Y2S Solenoid valve for oil return SVP Y1S Solenoid valve for hot gas bypass SVT Y4S Solenoid valve for injection Ta R1T A1P Outdoor air temperature Tb R4T Heat exchanger outlet temperature at cooling Ts2 R2T Suction pipe temperature detected with the suction pipe thermistor R2T Tsh R5T gt Temperature detected with the subcooling heat exchanger outlet thermistor R5T Tc High pressure equivalent saturation temperature TcS Target temperature of Tc Te Low pressure equivalent saturation temperature TeS Target temperature of Te Tfin HIT Inverter fin temperature TI R6T Liquid pipe temperature detected with the liquid pipe thermistor R6T Tp Calculated value of compressor port temperature Tei R7T Suction pipe temperature detected with the accumulator inlet thermistor 90 F
11. hooting OP Unified ON OFF Controller SilN34 817 ee Troubleshooting for Power Supply Transformer Check for continuity in F1U and F2U and then check the power supply transformer for output To check for continuity be sure to turn OFF the power supply and then dismount the fuse from the holder Subsequently put the test probes of a multiple meter against both ends of the fuse to check for continuity To check for output disconnect the connector X23A from the PC board and then make measurement of output voltage from the connector on the power supply transformer To make this measurement set the multiple meter to the AC range Is there eantinuity in F1U and F2U YES N Is output voltage from the Since a layer short circuit is power supply transformer not e lished in any part on the less than 19VAC board or in any actuator Check for it After checking replace and F2 NG YES The powerSupply transformer is normal Replace the power supply transformer PC board With power supplied to the PC board make measurement of voltage of this connector 336 Troubleshooting 5 18 NO Since a layer short circuit is established in any part on the PC board or in any actuator check for it Is there continuity in FIU and F2U After checking replace F1U and F2U NO Replace the power supply transformer Is output voltage fr
12. ilN34 817 15 18 Field Setting Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor optional the power consumption of unit operation can be saved suppressing the compressor operating condition Set item Condition Content Demand 1 Mode 1 The compressor operates at approx 60 or less of rating Mode 2 The compressor operates at approx 70 or less of rating Mode 3 The compressor operates at approx 80 or less of rating Demand 2 The compressor operates at approx 40 or less of rating Forced thermo OFF vhen the 0 i A V e dem a oper Or a external control adaptor for outdoor unit 1 While in Setting mode 2 set the setting condition for set item No 12 Setting of external low noise demand operation to YES 2 If necessary while in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode B When the normal demand operation is carried out Use of the external control adaptor for outdoor unit is not required 1 While in Setting mode 2 make setting of the set item No 32 Setting of constant demand to ON 2 While in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode Test Operation 203 Field Setting 16 18 SilN34 817 8 Thermostat S
13. ing while in Setting mode 2 D Start time Possible to select in the range of SE a mode with No 22 of Setting mode E 20 00 to 24 00 hours i i D End time Possible to select in the range of Select the start time with No 26 and the 5 06 00 to 08 00 hours de 3 Use the said time as a guide since the O ON with No SDR y priority E start time and the end time are estimated 9 ERR iL according to outdoor temperatures m Used to place limits on the compressor m For setting with the use of external control operating frequency to control the upper adaptor limit of power consumption Set the system to External control adaptor 1 Mode 1 of Demand 1 60 or less of for outdoor unit with No 12 of Setting 3 Setting of demand rating mode 2 and select the mode with No 30 operation 1 2 Mode 2 of Demand 1 70 or less of NN rating m For setting only in Setting mode 2 3 Mode 3 of Demand 1 80 or less of Set the system to Normal demand mode rating with No 32 of Setting mode 2 and select 4 Demand 2 40 or less of rating the mode with No 30 f Used to make address setting with AirNet m Set the AirNet to an intended address 4 Sk a AirNet connected using binary numbers with No 13 of Setting mode 2 Setting of hot water Make this setting to conduct heating UQ att u e heater operation using the hot water heater m Set No 16 of Setting mode 2 to ON M Make this setting to operate a system with diffuser duct while in high
14. ned on again after once turned off However for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned dh again return to the same operation condition as that of before power failure same as factory setting For the above reasons when the unit is set enabling to utilize Auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 1 The air conditioner starts operation suddenly after power failure reset or the main power supply turned on again Consequently the user might be surprised with question for the reason why 2 In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates MN Caution 12 Airflow when Cooling Thermostat is OFF This is used to set airflow to LL airflow when cooling thermostat is OFF Mode No First Code No Second Code No Contents 12 22 6 01 LL airflow 02 Preset airflow 174 Test Operation Field Setting 17 18 SilN34 817 3 2 Field Setting from Outdoor Unit 3 2 1 Field Setting from Outdoor Unit m List of Field Setting Items This following section indicates the list of field setting items For the lists of dip switch contents Setting mode 1 and Setting mod
15. om the power supply transformer not less than 19VAC YES The power supply transformer is normal Troubleshooting by Indication on the Remote Controller 6 18 SilN34 817 3 52 ur Indoor Unit Malfunction of Transmission Between Main and Sub Remote Controllers Remote Controller Display Applicable Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting md I U om K All models of indoor units In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal Normal transmission does not continue for specified period m Malfunction of transmission between main and sub remote controller m Connection between sub remote controllers m Defect of remote controller PC board AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred S SS1 R i e remore i Of remote controller PC boards Set SS1 to MAIN the is set to MAIN power supply off once and then back on SS1 of both remote controllers is gt Turn the power off and then back on If a malfunction occurs replace the remote controller PC board YES gt Set one remote controller to MAIN the power supply off once and then back on 308 Trouble
16. shooting 7 18 SilN34 817 Protection Control 4 5 STD Compressor Overload Protection This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of STD compressor such as locking STD compressor ON If the power supply is reset while in A operation prohibition mode the prohibition timer will continue counting when the power supply is turned ON Demand to operate CT detection current value gt 15 0A Y6 v STD compressor OFF for 30 min 4 When occurring 3 times within 90 minutes the malfunction code EG e output 4 6 Injection Control only for RXYQ5PA For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection SVT OFF HTdi Correcti ue isctrarge pipe HTdi gt 112 C HTdi lt 107 C ure on the INV compressor HTdi Value of INV compressor discharge SVT ON pipe temperature Tdi compensated with outdoor air temperature Function 127 Function General 8 18 SilN34 817 1 Function General 1 1 Symbol Symbol Electric symbol Description or function 2081 Y3S Four way valve Energize during heating DSH Discharge pipe superheated degree DSHi Discharge pip
17. static pressure Setting of high mode Use this setting mode when shields UQ att u 6 static pressure are installed on upper floors or balconies m Set No 18 of Setting mode 2 to ON In order to mount the diffuser duct remove the cover from the outdoor unit fan e For setting items of 1 refer to detailed information provided on page 196 onward 5 Demand3 Forced thermo OFF 184 Test Operation SilN34 817 18 18 Troubleshooting by Indication on the Remote Controller Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn power supply off and turn power supply on again YES Return to normal expansion valve is connected to X21A and NO gt External factor other than malfunction for example noise etc X23A of outdoor unit PC board A1P X26A only for RXYQ5PA Normal when coil check 1 of the moving _NO gt After connecting turn the power off and then back on again part of the electronic expansion valve is checked YES gt Replace the moving part of the electronic expansion valve disconnected gt Replace t ting cable Replace outdoor unit PC board Make measurement of resistance between the connector pins and then make sure the resistance falls in the range of 40 to 509 Or
18. unction 9 18 Refrigerant Circuit SilN34 817 RXYQ10PA 12PA CHECK VALVE N ELECTRONIC CN i O i me SI PRESSURE REGULATING VALVE ELECTROIC EXPANSION VALVE IG ACCUM Or FILTER ES zs FILTER FOUR WAY VALVE OG FC PRESSURE SENSOR SOLENOID ve Og ECK VALVE 77 CHECK VALVE tZ FILTER I FILTER I HSH PRESSURE z 5 Q HGH PRESSHRE i e SUG 25 3 SENSOR CAPILLARY TUBE 3 3 Q COMPRESSOR FILTER CAPILLARY TUBE GQ F FILTER N gt SE VALVE LOW PRESSURE SENSOR ee H i 7 STOP VALVE WOTH SERVICE PORT PT 9mm FLARE CONNECTION 3 3D061122A High Pressure Switch Refirgerant Circuit 63 10 18
19. witching Differential value during thermostat ON OFF control can be changed For details refer to 6 4 Thermostat Control while in Normal Operation on page 141 Mode No First Code No Second Code No Differential value 12 22 2 gt ue 02 0 5 C 9 Airflow Setting when Heating Thermostat is OFF This setting is used to set airflow when heating thermostat is OFF When thermostat OFF airflow volume up mode is used careful consideration is required before deciding installation location During heating operation this setting takes precedence over 7 Fan Stop When Thermostat is OFF Mode No First Code No Second Code No Contents 12 22 3 01 LL airflow 22 02 Preset airflow 10 Setting of Operation Mode to AUTO This setting makes it possible to change differential values for mode selection while in automatic operation mode 5 i Setting position No Mode No Setting switch No 01 02 03 04 05 06 07 08 12 22 4 0C 1 C 2C 3 C 4 C 5 C 6c 7 C The automatic operation mode setting is made by the use of the Operation Mode Selector button 11 Auto Restart after Power Failure Reset For the air conditioners with no setting for the function sameras factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is tur
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