Daikin VRV RSXYP16KJY1 Page 37 Service Manual Download | Manualshive

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Si30-408

Control of Indoor Unit

Basic Information

33

4.5

Thermostat Control in Cooling / Heating Automatic
Operation

In cooling / heating automatic operation, the unit is controlled as shown below based on set
"differential value". Factory setting of differential valve is 5°C. As to charging method of setting
value, refer to page 43 and page 44.

Cooling/Heating
Differential: at
5°C

Automatic heating

22˚C

Automatic cooling

27˚C

Display selection

Cooling

→

Heating

Display selection

Heating

→

Cooling

Cooling thermostat ON
Cooling thermostat OFF

3˚C

Heating thermostat OFF
Heating thermostat ON

T=5˚C

T/2+2˚C(4.5˚C)

Cooling / heating differential : at 3˚C

Automatic heating

22˚C

Automatic cooling

25˚C

T=3˚C

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Summary of Contents for VRV RSXYP16KJY1

Page 1: ...Si30 408 Basic Training Manual ...

Page 2: ... on trouble shooting and trouble removing corresponding to the computerized and systematized products are required Based on these requests therefore we have prepared this manual emphasizing the understanding on VRV system We wish that you would use this manual as a guidebook for the service of VRV system or as a reference book for education of service personnel which leads to the development of sk...

Page 3: ... General Contents General Contents A Introduction 1 B Basic Information 21 C Field Settings from Remote Controller 41 D Troubleshooting 67 E Cases for Examination 109 F Service Checker Type3 Application Edition 127 G Appendix 191 Index i Drawings Flow Charts iii ...

Page 4: ...Si30 408 ii General Contents ...

Page 5: ... Unit Models 3 2 2 Nomenclature 5 3 System Basic Configuration 11 3 1 Cooling Heating Selection Standard System 11 3 2 Heat Recovery Cooling Heating Individual Operating System 14 4 Super Wiring System 15 4 1 Points of Super Wiring System 15 4 2 Wiring Length 16 5 REFNET Piping 17 5 1 Allowable Length of Refrigerant Piping 17 5 2 For Refrigerant Piping 19 ...

Page 6: ...door unit The expansion valve is mounted to the outdoor unit only SKY AIR System for Simultaneous Operation Twin Triple and Double Twin These series are included in SkyAir These types can be connected to two to four indoor units to single system However the individual operation is not available only the simultaneous operation The expansion valve is mounted to the outdoor unit only Multi System for...

Page 7: ...rter KU series Model Type Service manual Model Type Service manual RSXY5 10H J RSX5 10H J Heat pump Cooling only Si 46C Si 46C RSX5 10KU Cooling only Si 91 VRV Inverter KA series Model Type Service manual RSX5 10KA Cooling only Si 92 VRV Inverter K series H R with Scroll Comp Model Type Service manual RSEY8 10KLY1 Heat recovery Si 95 High COP Inverter Type Large Capacity Inverter Type VRV Plus ser...

Page 8: ...ry Si 96 High COP Inverter Type VRV High COP type L series Model Type Service manual RSXYP5 10L Heat pump Si33 201 Large Capacity Inverter Type VRV Plus series Model Main unit Sub unit Type Service manual RSXYP16 30KJ RSXP16 30K RSEYP16 30KJ RXYP8 or 10KJ RXP8 to 20K REYP8 or 20KJ RXEP8 or 10KJ RXEP8 to 10K RXEP8 or 10KJ Heat pump Cooling only Heat recovery Si33 002 Si33 103 Si33 105 VRV II series...

Page 9: ...0 HP 125 5 HP 25 1 HP 63 2 5 HP 200 8 HP 32 1 25 HP 80 3 2 HP 250 10 HP 40 1 6 HP 100 4 HP Refrigerant type No indication R22 P R407C Type of unit C Ceiling mounted cassette type Double flow F Ceiling mounted cassette type Multi flow Super cassette K Ceiling mounted cassette corner type D Ceiling mounted low silhouette duct type Low static pressure S Ceiling mounted built in type B Ceiling mounted...

Page 10: ...Hz Indicates major design category B New ceiling suspended cassette K Wall mounted type 40 63 Capacity Indication Conversion to horsepower 40 1 6HP 50 2 0HP 63 2 5HP 71 3 HP 100 4 HP 125 5 HP Refrigerant R407C Type of unit FUY New ceiling suspended cassette type FXYA Wall mounted type 40 63 P 71 V1 B FUY V2863 ...

Page 11: ...n to horsepower 71 3HP 140 6HP Type of Unit Connection Unit BEV K VE 71 V2864 V1 Single phase 220 to 240V 50Hz Indicates major design category Capacity Indication Connectable total indoor unit capacity 100 Total indoor unit capacity less than 100 160 Total indoor unit capacity 100 or more but less than 160 250 Total indoor unit capacity 160 or more but less than 250 Refrigerant type No indication ...

Page 12: ...P 8 8 HP 18 18 HP 26 26 HP 10 10 HP 20 20 HP 28 28 HP Refrigerant R407C No indication R22 Indicates that this is a RSXY Heat Pump RSEY Heat Recovery RSX Cooling Only 16 E P RSX V2288 The unit with anti corrosion treatment Power supply Y1 3 phase 380 to 415V 50Hz Indicates major design category KJ Indicates that this is a Heat Pump or Heat Recovery type K Indicates that this is a Cooling Only type ...

Page 13: ...ing mounted cassette type Multi flow K Ceiling mounted cassette corner type S Ceiling mounted built in type M Ceiling mounted duct type H Ceiling suspended type A Wall mounted type L Floor standing type N Concealed floor standing type D Slim ceiling mounted duct type U Ceiling suspended cassette type Connection unit series Indicates that this is VRV system indoor unit C 40 VE M Q FX V2286 V1 Singl...

Page 14: ...22 HP 30 30 HP 40 40 HP 8 8 HP 16 16 HP 24 24 HP 32 32 HP 42 42 HP 10 10 HP 18 18 HP 26 26 HP 34 34 HP 44 44 HP 12 12 HP 20 20 HP 28 28 HP 36 36 HP 46 46 HP 38 38 HP 48 48 HP Refrigerant R410A No indication R22 Indicates that this is a RX Cooling Only RXY Heat Pump REY Heat Recovery M B 48 Q RXY V2288 Power supply symbol VE Single phase 220 to 240V 50Hz 220V 60Hz Indicates major design category Ca...

Page 15: ...H control Normal motorized valve SH control Master Slave Slave Controls operation mode by using four way valve Changing of outdoor heat exchanger to condenser or evaporator Selection for cooling heating is possible only by master remote controller not displaying selection under control which has been set Slave remote controllers have following selection function only 1 Cooling dry and fan only at ...

Page 16: ...oil equalizer To indoor units Two pieces of piping for liquid and gas Cooling Mode Cooling Mode Normal motorized valve SH control Normal motorized valve SH control Master Slave Slave R22 R22 Selection for cooling heating is possible only by master remote controller not displaying selection under control which has been set Slave remote controllers have following selection function only 1 Cooling dr...

Page 17: ...ing Mode Normal motorized valve SH control Normal motorized valve SH control Master Slave Slave Controls operation mode by using four way valve Changing of outdoor heat exchanger to condenser or evaporator Selection for cooling heating is possible only by master remote controller not displaying selection under control which has been set Slave remote controllers have following selection function on...

Page 18: ...ve SC control Master Slave Master Controls cooling and heating by selection the inside solenoid valve Control operation mode by using plural four way valves Outdoor heat exchanger is divided and changed to condenser evaporator based on the load Selection for cooling heating is possible only by master remote controller not displaying selection under control which has been set in each BS unit Slave ...

Page 19: ...1F2 I O N P F1 I O N N P Indoor unit Power supply Single phase 200 V Remote controller Power supply 3 phase 220 V or 380 415 V A B C Cooling heating selection remote controller O O I O Outdoor unit A Master unit Outdoor unit B Slave unit F1F2 I O Outdoor unit C Slave unit Power supply 3 phase 200 V Power supply 3 phase 200 V F1F2 F2 I O N N P P P F1F2 I O N System Q To other system Remote controll...

Page 20: ... of System Note Be sure to check the farthest length and the total wiring length in designing If the sum of lengths exceeds the restricted limits divide the system or install more DIII NET expander adapters as countermeasures In the above system the farthest connecting distance is 900m between A and C conforming the condition of the farthest length of 1000m or less and the total wiring length is 1...

Page 21: ...oor unit master to Outdoor unit slave a 1 branch kit to Indoor unit c Outdoor unit to Indoor unit b c Allowable length m 5m or less 40m or less 120m or less Between outdoor unit and indoor unit H1 Between indoor units H2 Between outdoor units master and slave units H3 Allowable level difference m 50m or less If outdoor unit is located lower than indoor unit 40m or less 15m or less 5m or less H1 H3...

Page 22: ...r unit 1 Outdoor unit 2 Indoor units Indoor units Indoor units 1 refrigerant branch kit Outdoor branch kit b REFNET header Outdoor branch to Outdoor unit a 1 branch kit to idoor unit c Outdoor branch to Indoor unit b c Allowable length m 10m or less 40m or less 150m or less Between outdoor unit and indoor unit H1 Between indoor units H2 Between outdoor units H3 Allowable level difference m 50m or ...

Page 23: ... Length of Joint For Reference Unit m Piping size Tightening angle guideline Recommended arm length of tool φ6 4 60º 90º Approximately 150mm φ9 5 60º 90º Approximately 200mm φ12 7 30º 60º Approximately 250mm φ15 9 30º 60º Approximately 300mm φ19 1 20º 35º Approximately 450mm Piping size Bending radius Tightening torque N cm φ6 4 30 to 40 mm 1420 1720 φ9 5 30 to 40 mm 3270 3990 φ12 7 40 to 60 mm 49...

Page 24: ...REFNET Piping Si30 408 20 Introduction ...

Page 25: ...3 1 Cooling Operation 24 3 2 Heating Operation 25 3 3 Compressor Capacity Control 26 3 4 Control of Electronic Expansion Valve 27 4 Control of Indoor Unit 28 4 1 Thermostat control 28 4 2 Drain Pump Control 30 4 3 Freeze up Prevention Control 31 4 4 Heater Control 32 4 5 Thermostat Control in Cooling Heating Automatic Operation 33 5 Other Functional Operations 35 5 1 Explanations on Main Functiona...

Page 26: ...ntersection above can be obtained by measuring pressure and temperature of refrigerant at a certain point As to single refrigerants R22 R134A etc isothermal line has no gradient in the saturated area that is the saturation temperature under certain pressure is same at both liquid side and gas side As to mixed refrigerants R407C R410A etc in which plural refrigerants with different boiling points a...

Page 27: ...gree The difference between temperature and pressure equivalent saturation temperature in subcooled liquid is called subcooled degree SC In order to prevent wet operation the superheated degree is made at evaporator outlet and refrigerant flow rate into evaporator is regulated with expansion valve so that the superheated vapor can be sucked by compressor Wet operation is a state of operation where...

Page 28: ...tion temperature Te close to target value Superheated Degree Control of Indoor Electronic Expansion Valve In order to maintain the superheated degree in evaporator and to distribute proper refrigerant flow rate in spite of different loads on every indoor unit based on the temperature detected by thermistors of liquid pipes and gas pipes indoor electronic expansion valve is so regulated as to put s...

Page 29: ...on valve is so controlled as to put superheated degree at evaporator outlet close to target value Superheated degree SH outdoor suction pipe temperature outdoor evaporating temperature Subcooled Degree Control of Indoor Electronic Expansion Valve In order to distribute proper refrigerant flow rate in spite of different loads on every indoor unit based on the pressure detected by the high pressure ...

Page 30: ...d an inverse installation outdoor unit is placed lower than indoor unit may increase liquid pipe inside resistance In such case lower setting of target evaporation temperature by using field setting will give stable operation On the other hand for short connection piping higher setting will make stable operation easy In addition samplings of evaporation temperature and condensation temperature are...

Page 31: ...ifference between setting temperature and suction air thermistor temperature T When SH SHS adjust to make opening degree wider than the present one When SH SHS adjust to make opening degree narrower than the present one SH Superheated degree Tg Tl SHS Target superheated degree Normally 5 C however when the temperature difference T decreases SHS increases even when SH is large the opening degree be...

Page 32: ...nge of remote controller thermostat In such a case install the remote controller thermostat in the room where there is no influence of outdoor air Preset temperature TS Suction temperature TH1 12 14 16 18 20 22 24 26 28 30 32 34 12 14 16 18 20 22 24 26 28 30 32 34 20 22 24 26 28 30 32 34 16 15 18 20 22 24 26 28 30 Preset temperature TS Suction temperature TH1 Range in which remote controller therm...

Page 33: ...ield setting Refer to page 43 and page 44 for changing 4 1 3 Thermostat control in Dry Operation In dry operation control is made based on suction temperature at the time of operation start Fan is driven with L flow rate during dry operation and turned off for a period of 6 minutes during thermostat off and then with L flow rate In order to prevent humidity from rising in the room during thermosta...

Page 34: ...rmostat Operation Float switch Drain pump 5 min 1 Residual operation 5 min 5 sec ON OFF ON OFF ON OFF Malfunction stop with A3 on remote controller Thermostat Operation Float switch Drain pump 5 min 5 sec ON OFF ON OFF ON OFF Malfunction stop with A3 on remote controller 2 Enters malfunction treatment if the float switch does not return within 5 minutes 5 min 5 min 5 min 5 min 5 min 5 min 5 min 1s...

Page 35: ...g uneasy Aiming to limit the frequency of thermostat on off and keep comfortableness Wide range of continuous operation can be kept Aiming to maintain reliability of compressor The frequency of compressor on off is limited Capacity control of indoor electronic expansion valve To make sure to remove the frozen matter once enter into frozen mode Aiming to make sure to prevent water from leakage The ...

Page 36: ...re transmitted from outdoor 50 C Th2 Indoor liquid pipe thermistor 43 C Off Condition Any One of the Conditions below should be Satisfied Becomes any mode except heating Thermostat off Under hot starting Under preparation of oil return or defrosting Under pressure equalizing Tc 60 C Th2 47 C 4 4 2 Fan Residual Operation In order to prevent the thermal protector from actuation during heater is off ...

Page 37: ...differential valve is 5 C As to charging method of setting value refer to page 43 and page 44 Cooling Heating Differential at 5 C Automatic heating 22 C Automatic cooling 27 C Display selection Cooling Heating Display selection Heating Cooling Cooling thermostat ON Cooling thermostat OFF 3 C Heating thermostat OFF Heating thermostat ON T 5 C T 2 2 C 4 5 C Cooling heating differential at 3 C Automa...

Page 38: ...ostat turns off if the temperature does not reach setting temperature 3 C cooling operation should not be on Automatic heating 22 C Automatic cooling 25 C Display selection Cooling Heating Display selection Heating Cooling Cooling thermostat ON Cooling thermostat OFF 3 C Heating thermostat OFF Heating thermostat ON T 3 C T 2 2 C 3 5 C Automatic heating cooling 25 C Display selection Cooling Heatin...

Page 39: ...stat off with limitation on retrying Oil return control Based on cumulative operation time oil return operation should be carried out periodically According to the state of operation cumulative operation time may be compensated Compressor capacity control Constant condensing temperature Tc control Basic target value R22 46 C R407C 48 C R410A 46 C Compensation is applied Outdoor motorized valve con...

Page 40: ... For RSXY8 10K and RSXYP8 10KJ Schematic Diagram of Refrigerant Rev C F R Th2 SENPH U SENPL V T Th4 Th3 2 S Th3 1 S Th3 Y Th1 W Th3 Y Th1 W Th2 X L Th2 X L Th3 Y Th1 W Th2 X L K K K J G D H H A B STD Comp INV Comp Accumulator Gas pipe Liquid pipe Liquid pipe Gas pipe Gas pipe Liquid pipe Gas pipe Liquid pipe I Q Th1 E ...

Page 41: ...subcooled degree SH Tg Tl control in cooling operation Components of outdoor unit A Inverter compressor INV MC1 Used to conduct the capacity control constant Te control in cooling constant Tc control in heating with inverter B STD compressor STD MC2 Used to conduct the capacity control with compressor using commercial power supply and inverter compressor delayed start C Receiver Making constant su...

Page 42: ...ube Four way valve Electronic expansion valve Electronic expansion valve Pressure sensor High pressure Compressor Compressor Compressor Solenoid valve Pressure sensor Low pressure Filter To oil equalizing pipe of other outdoor unit To liquid pipe of other outdoor unit To gas pipe of other outdoor unit High pressure switch Oil separator Oil separator High pressure switch J S L D E 7 2 T F N R C V 6...

Page 43: ...ntrol and the compensation of electronic expansion valve control Liquid pipe thermistor Tl R2T Used to control superheated degree SH Tg TI in cooling operation Used to freeze up prevention control Used to control subcooled degree SC Tc TI in heating operation Used for hot start reset 34 C Gas pipe thermistor Tg R3T Used to control superheated degree SH Tg TI in cooling operation Components of outd...

Page 44: ...o avoid increase in pressure at abnormal hating due to fire the fusible part melts at a temperature of 70 to 75 C thus relieving pressure into atmosphere T Pressure regulating valve 1 Receiver to Discharge pipe In order to prevent damage to functional parts due to increase in pressure in transport or storage these valves open at pressure of 2 to 2 7MPa thus avoiding the increase in pressure 1 5 2 ...

Page 45: ...ld Settings from Remote Controller Remote Controller Remote Controller Remote Controller 1 Field Settings from Remote Controller 42 1 1 Field Setting Mode 43 1 2 Service Mode 49 1 3 Check Mode 54 1 4 Test Operation Mode 55 2 Field Setting on Outdoor Unit 56 2 1 Explanation of Basic Mode 57 2 2 Use of Each Setting Mode 63 ...

Page 46: ... u t t o n o n c e o r a f t e r 3 0 m i n u t e s After 10 seconds Following codes can be checked as often as pressing CHECK TEST button once C 1 Special Field Setting Mode No 50 B 1 Display of Service Data Mode No 40 41 B 2 Service Setting Mode No 43 44 A 1 Setting of Individual Function for Indoor Unit Mode No 10 to 15 20 to 25 A 2 Setting in Centralized Control Mode No 00 30 A 3 Setting AirNet...

Page 47: ...he system into field setting mode While in normal mode press and hold the button for a period of four seconds or more to put the system into Field Setting Mode Select mode No Select a desired mode No using the button Select indoor unit No While in group control to make field settings for individual indoor unit i e if mode No 20 21 22 23 or 25 is selected press the button and select the indoor unit...

Page 48: ...on output Abnormal output 1 External ON OFF input Make this setting to conduct ON OFF operation from outside Forcedly OFF ON OFF operation When external protection device is connected 2 Thermostat selection Make this setting to use the remote sensor 1 C 0 5 C 3 Air flow rate with thermostat OFF Support for increased capacity of air cleaning unit LL Set airflow rate 4 Automatic mode differential Se...

Page 49: ...er operation is occasionally not accepted displaying 88 for a period of about one minute Put the system into setting mode While in normal mode press and hold the button for a period of four seconds or more to put the system into Field Setting Mode Select mode No Select mode No 00 using button Select group No Select group No using the upper and lower button of Group No increases such as 1 00 1 01 t...

Page 50: ... the button for a period of four seconds or more to put the system into Field Setting Mode Select mode No Select mode No 30 using button Select unit No Select unit No using button Select group No Select group No using the upper and lower button of Group No increases such as 1 00 1 01 to 1 15 2 00 to 4 15 Determine group No Determine the content using button Return to normal mode Press button Note ...

Page 51: ...ings from Remote Controller 47 Examples of Address Settings Group No for centralized control 1 00 1 2 3 1 01 For remote control and connecting each indoor units to DIII net 1 03 00 1 00 SETTING AIR CONDITIONER TEST 3 Mode No Field Set Mode 6 5 7 2 4 Group No ...

Page 52: ...ply Check installation and electric wiring again before turning on the power supply In turning on the power supply after all LCDs are displayed the operation is occasionally not accepted displaying 88 for a period of about one minute 2 Put the system into setting mode While in normal mode press and hold the button for a period of four seconds or more to put the system into Field Setting Mode 3 Sel...

Page 53: ...ton Select unit No For group control only Select indoor unit No to be set using button Select malfunction history No or sensor data No Select a desired malfunction history No or sensor data No by using button Each data will be displayed Refer to table next page Return to normal operation mode Press button once Normal operation mode Field setting mode Service mode 1 button for a period of four seco...

Page 54: ... data Displays various types of data Select the data to be displayed with the button Sensor data 0 Remote controller thermostat 1 Suction 2 Liquid pipe 3 Gas pipe Address data 4 Indoor unit address 5 Outdoor unit address 6 BS unit address 7 Zone control address 8 Cooling heating batch address 9 Demand low noise address Unit Malfunction code 2 U4 40 Malfunction code History No 1 9 1 Latest 1 27 41 ...

Page 55: ...ng While in wireless remote controller select the upper and lower button Make required settings in each mode In mode 44 and 45 press the button before setting so that the setting change can be made The code in LCD blinks Refer to table next page Determine the set content Mode 44 45 Press the button to determine After determination the code in LCD changes from blinking to lightening Return the syst...

Page 56: ...of each indoor unit will be forcedly turned on forcedly ON individually 44 Individual setting Select the unit by using button Set the air flow rate with the button Set the air flow direction with the button 45 Unit No transfer Transfer unit No Select the unit No with the button Select the unit no after transfer with the Unit 43 1 Unit 44 1 1 3 Code Air flow rate 1 Low 3 High Air flow direction P0 ...

Page 57: ...pply Check the installation and electric wirings once again before turning on the power supply When the power supply is turned on there may be cases where any operation cannot be accepted with 88 displayed once Put the system into setting mode Press the button for a period of 4 seconds or more and put the system into Field Setting Mode Put the system into service mode Press the button for a period...

Page 58: ...ton once 1 Malfunction code is displayed 2 Press the button once again 1 Indoor model code is displayed 3 Press the button one more time 1 Outdoor model code is displayed Refer to a list on malfunction code P 104 on the contents of malfunctions code 0 7 1 Capacity code F Indoor system code C Indoor type code J 2 A A 1 0 7 1 F C J Display 028 080 Display 1 2 F U H Unit 0 Malfunction code L0 Check 2...

Page 59: ...e by operating the button of remote controller 1 4 1 Setting of Test Operation Mode Test operation mode setting is available by operating as follows After setting of test operation mode pressing the button starts to operate test operation TEST OPERATION is displayed on the remote controller Normal operation mode Test operation mode Press the button four times ON OFF ...

Page 60: ...changes of operating conditions or settings of a variety of addresses mainly for service work 3 Monitor mode H1P Blinking This mode is used to check the contents set in Setting mode 2 Procedure for Changing Mode Steps to Change Mode BS1 MODE BS2 SET BS3 RETURN BS4 TEST BS5 RESET V2760 Setting mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H1P Setting mode 2 MODE O...

Page 61: ...ng items No 2 3 and 4 can select the cooling heating selection method After setting press the RETURN button BS3 to determine the content Pressing the RETURN button BS3 puts the system into the initial setting No Setting Display items Example of LED display H1P H2P H3P H4P H5P H6P H7P 1 Display of Malfunction In preparation Test operation 7 7 8 7 7 7 7 2 Select cooling heating Individual 7 7 8 7 7 ...

Page 62: ...vel when the low noise signal is input from outside 26 Starting time of nighttime low noise operation Sets the starting time of the nighttime low noise Setting of the nighttime low noise is required 27 Closing time of the night low noise operation Sets the closing time of the nighttime low noise Setting of the nighttime low noise is required 28 Setting of power transistor checks mode Uses for the ...

Page 63: ...7 7 8 7 7 7 High Normal Low 8777877 8777787 8777778 9 Correction of the pressure loss in piping Select according to the piping length and scale of the pressure loss 8 7 7 8 7 7 8 High Normal Low 8777877 8777787 8777778 10 Changing of the time for entering in defrost 8 7 7 8 7 8 7 Quick Normal Slow 8777877 8777787 8777778 11 8 7 7 8 7 8 8 Equipped Not equipped 8777778 8777787 12 Setting when mounti...

Page 64: ...8 8 7 7 OFF ON 8777778 8777787 29 8 7 8 8 8 7 8 OFF ON 8777778 8777787 30 8 7 8 8 8 8 7 60 demand 70 demand 80 demand 8777778 8777787 8777877 32 8 8 7 7 7 7 7 OFF ON 8777778 8777787 38 For emergency measures of the outdoor multi system installation For the series of VRV II 8 8 7 7 8 8 7 OFF Master unit operation Inhibited 8777778 8777787 39 8 8 7 7 8 8 8 OFF Slave unit 1 operation Inhibited 877777...

Page 65: ...7 8 8 7 7 Lower four digits upper 13 The number of terminals 9 7 7 8 8 7 8 Lower four digits lower 14 Content of malfunction latest 3 8 7 7 8 8 8 7 Refer to page 104 Malfunc tion code list in the chapter of trouble shooting 15 Content of malfunction one cycle before 8 7 7 8 8 8 8 16 Content of malfunction two cycles before 8 7 8 7 7 7 7 20 Content of retry latest 4 8 7 8 7 8 7 7 21 Content of retr...

Page 66: ...22 in decimal number As a result the address becomes 22 For example the number of terminal units for Nos 12 and 13 is expressed in eight digit binary number which are the combination of four upper and four lower digits for Nos 12 and 13 respectively 0 to 128 In the case of the addresses for No 12 and No 13 become 0101 and 0110 respectively and the combination of the two addresses becomes 01010110 ...

Page 67: ...outdoor unit system and to close liquid side stop valve completely With opening status the refrigerant cannot be charged 3 Set A additional refrigerant charge operation ON in stop state by using the H1P Light The operation starts H2P displays the test operation blinking then Test Operation and Under centralized control are displayed on remote controller Have all refrigerants been charged Have all ...

Page 68: ...the liquid side stop valve 3 Setting of service mode 4 It is completed if the refrigerant is charged to the specified capacity If the charge is not completed within 30 minutes make the setting again and operate Pressing the check button in refrigerant additional charging operation stops the operation 5 Remove the refrigerant charge hose and open the liquid side stop valve fully Be sure to operate ...

Page 69: ...mode can be released by resetting the power supply of outdoor unit 2 2 3 Setting of Evacuation Mode When the refrigerant is recovered in the field open the expansion valves in indoor and outdoor units fully and energize some solenoid valves Operation Procedures 1 Make the setting of B Refrigerant recovery evacuation mode ON by using the in stop state The expansion valves of indoor and outdoor unit...

Page 70: ... minimum opening degree at start of the motorized valve Stopping Pressure equalizing Cooling start control Cooling stability waiting Various judgment functions Pump down residual operation Standby for restarting Completion 7787777 7977778 7977787 7977788 7977888 7978777 7977877 7977878 7977887 Step1 Press and hold BS4 for a period of 5 seconds or more Step2 10 seconds to 10 minutes Step3 20 second...

Page 71: ...on of Electronic Expansion Valve 83 3 4 Structure and Movements of Four way Valve 85 3 5 Structure and Operation of Solenoid Valve 87 3 6 Structure and Operation of Two way Solenoid Valve 88 3 7 Check on Outdoor Fan Motor 89 3 8 Diagnosis on Malfunction Code of Inverter System 90 3 9 Diagnosis on Transmission System Malfunction 93 4 Malfunction Tree Analysis FTA 96 4 1 Actuation of Freeze up Preve...

Page 72: ...the operating conditions and then record them in the operating condition check sheet p 108 3 Referring to the book of case examples check to be sure whether applicable information is described 4 Using the FTA technique probe the causes of defects and narrow down the causes by a process of elimination Referring to attached analysis on causes by FTA and samples probe the causes of defects 5 Take mea...

Page 73: ...controller Liquid pipe temperature No 41 on remote controller Gas pipe temperature No 41 on remote controller Opening degree of electronic expansion valve Other Check Items Number of indoor unit connected Total capacity Capacity ratio of indoor unit to outdoor unit Approximate piping length Additional refrigerant charged amount Frequency of occurrence of abnormality or malfunction Timing of occurr...

Page 74: ...sure to grasp the state by using the checker Year round cooling Outdoor unit short circuit Low outdoor temperature control High pressure stepping down protection control Excessively light load short circuited in indoor unit erroneous selection of model Excessively heavy load erroneous selection of model Low pressure stepping down protection control Cooling overload control Large pressure loss For ...

Page 75: ...urban area Excessively frequent defrosting operation Operation standby due to outdoor temperature Refrigerant depositing in the indoor unit not in operation Rising of high pressure due to excess refrigerant Open type shops offices etc Heating overload high pressure stepping down control Excessively frequent defrosting operation fan control Excessively light load short circuit in indoor unit errone...

Page 76: ...nt cannot be super heated at the outlet of heat exchanger and liquid refrigerant which does not evaporate returns to compressor resulting an operation so called wet operation Superheated degree 0 The discharge pipe temperature lowers Condensing temperature 20 C or less 2 For insufficient charging The operating capacity of compressor has a tendency to decrease in cooling while increase in heating 1...

Page 77: ...ure rises due to decreasing of compressor output Progress of excessive gas charging No status change within the range that the receiver can absorb the refrigerant Frequency becomes to the minimum Outdoor electronic expansion valve closes due to overload control High pressure lowers immediately after the overload control High pressure rises gradually with increasing of frequency For maintaining of ...

Page 78: ...ure Frequency Heating Fan control will be executed for maintaining high pressure with low outdoor temperature cooling control Actually hunting will be generated Low pressure is maintained constant High pressure lowers due to decreasing of compressor capacity Low pressure rises due to large opening degree of indoor electronic expansion valve and frequency increases a little with capacity control Lo...

Page 79: ... C R31T 165 0 C 20 0 C J3 Discharge pipe thermistor For STD Th3 2 196 0 C 10 2 C R3 2T 165 0 C 20 0 C R32T 165 0 C 20 0 C J3 Suction pipe thermistor Th4 90 0 C 10 2 C R6T 90 0 C 43 6 C R2T 90 0 C 43 6 C J5 Oil temperature thermistor For INV Th5 1 90 0 C 10 2 C JH Oil temperature thermistor For STD Th5 2 90 0 C 10 2 C JH Header thermistor Th6 90 0 C 10 2 C R4T 90 0 C 43 6 C 90 0 C 43 6 C J7 Current...

Page 80: ...ndoor electronic EV closes When the resistance deviates to larger value Lower temperature detected Superheated degree SH Tg Tl Tg Tl increases Indoor electronic EV opens Superheat operation cooling capacity lowering Freeze up protection cannot be detected Wet operation Freeze up protection can be applied easily Indoor gas pipe thermistor When the resistance deviates to smaller value Higher tempera...

Page 81: ...ndoor electronic extension valve opens Liquid refrigerant is stagnant in indoor heat exchanger High pressure rises due to heating overload Refrigerant delivery among indoor units cannot be balanced Indoor unit liquid pipe thermistor When the resistance deviates to larger value Lower temperature detected Condition for canceling hot start Tl 35 C or 3 minutes elapse from thermostat ON Tl 35 C is det...

Page 82: ...tor For Thermistor Malfunction No Name Material 1 Thermistor Metallic oxide Glass Dumet wire 2 Coat agent 1 Silicon resin 3 Coat agent 2 Epoxy resin 4 Filling agent Epoxy resin 5 Protective pipe Phosphor deoxidized copper Electrolytic corrosion transfer of cuprous oxide generated ...

Page 83: ... 1 208 9 191 5 175 8 12 67 11 70 10 82 10 01 9 27 30 32 34 36 38 16 1 14 8 13 6 12 5 11 5 15 6 14 2 13 1 12 0 11 1 161 5 148 4 136 6 125 8 116 0 8 60 7 98 7 41 6 89 6 42 40 42 44 46 48 10 6 9 8 9 1 8 4 7 8 10 3 9 5 8 8 8 2 7 6 107 0 98 8 91 3 84 4 78 1 5 98 5 57 5 20 4 86 4 54 50 52 54 56 58 7 2 6 7 6 7 6 2 5 7 7 0 6 7 6 0 5 5 5 2 72 3 67 1 62 2 57 8 53 7 4 25 3 98 3 73 3 50 3 28 60 62 64 66 68 4 ...

Page 84: ...color of harness is not as mentioned above find the measuring point by following procedure 1 Black is GND 2 Find DC5V line 3 The remained wire is the sensing section For the same pressure higher output voltage can be detected with low pressure sensor while lower output voltage detected with high pressure sensor ...

Page 85: ...re PL VL 0 5 0 98 3 PH Detection pressure High pressure side MPa PL Detection pressure Low pressure side MPa VH Output voltage High pressure side VDC VL Output voltage Low pressure side VDC Output voltage VH VL 0 5 1 0 5 0 1 2 3 4 VDC 10 2 1 0 15 3 1 5 30 6 3 0 25 5 2 5 20 4 2 0 kg cm2 MPa PH PL Detection pressure High pressure PH Low pressure PL ...

Page 86: ...H Detection pressure High pressure side MPa PL Detection pressure Low pressure side MPa VH Output voltage High pressure side VDC VL Output voltage Low pressure side VDC Output voltage VH VL 0 5 1 0 5 0 1 2 3 4 VDC 10 2 1 0 15 3 1 5 30 6 3 0 25 5 2 5 20 4 2 0 kg cm2 MPa PH PL Detection pressure High pressure PH Low pressure PL 1 7MPa ...

Page 87: ...l or subcooled degree control In the valve single phase excitation drive type pulse motor is employed On receiving 2000 pls signal goes to full open The stroke of gear is 0 7 mm from full open to complete close The below figure shows the inside structure of driving section and the gear ratio is 1 30 Electronic expansion valve driving part Pulse motor Output shaft Main body mounting nut Valve body ...

Page 88: ...riving section Crack is found in bellows Gears run idle due to wear of gear teeth The valve is protruded excessively into the valve seat When driving section of electronic expansion valve is removed during operation default setting initialize shifted and the output shaft may be incorrect position If this operation is repeated protrusion of valve cannot be returned Above cause of the trouble may be...

Page 89: ...er While in cooling and defrosting in heating the valve feeds to outdoor heat exchanger For VRV system standard unit one four way valve is installed however for some units of other series plural valves may be installed Moreover there is two way valve or three way valve operated with the same mechanism Movement in Cooling From discharge of compressor From indoor unit heat exchanger To suction of co...

Page 90: ...ation in Heating From discharge of compressor Internal piston moves according to pressure difference between high pressure and low pressure To indoor heat exchanger To suction of compressor From outdoor unit heat exchanger Coil energize Internal plunger moves ...

Page 91: ...r suction port from liquid line reducing pressure through capillary tube The operation is as follows Plunger which is a slide part inside valve body lifts to make a flow of refrigerant when the coil is energized while when not energized the plunger lowers to contact with valve seat due to spring force and shuts the flow of refrigerant Guide tube Spring Refrigerant pipe Valve seat Plunger Solenoid ...

Page 92: ... In operation of standard outdoor unit In no operation of standard outdoor unit Cooling operation Valve state open not energized The line including the valve functions as a low pressure line of each standard speed outdoor unit Valve state open not energized The valve is opened to collect refrigerant in INV unit in order to prevent refrigerant from accumulate in the unit stopping Heating operation ...

Page 93: ...eck on the following items Pulses approx 0 V and approx 5 V can be output for four times between pin No 1 and 5 in X2A Pulses approx 0 V and approx 5 V can be output for four times between pin No 2 and 5 in X2A Pulses approx 0 V and approx 5 V can be output for four times between pin No 3 and 5 in X2A Above item 2 cannot be observed Faulty PC board Replace PC board Item 4 cannot be observed Faulty...

Page 94: ...s 30 Hz or less Overload Electronic thermal detector 54 A detected in some cases Main causes In normal operation Control PC board Inverter PC board Power unit Detect signal of power unit with inverter PC board Compressor Signal Transmission malfunction Malfunction of transmission between external control PC board and inverter PC board Safety device of inverter system actuated in inverter microcomp...

Page 95: ...or PC board and INV PC board INV PC board Outdoor PC board LO Faulty inverter PC board The safety device of inverter system activates in microcomputer on inverter Only for G INV PC board Power transistor Mgsw LA Faulty power transistor Output signal sent to power transistor is detected in inverter PC board Only for G Disconnection between INV PC board and compressor Compressor Power unit L4 Radiat...

Page 96: ...ion cannot be determined When the retry frequency completes within 60 minutes malfunction is determined and malfunction code will be displayed on indoor remote controller 9 BLINK 8 ON 7 OFF LED A 1 2 3 4 Malfunction contents Number of retry times 9 7 7 7 7 Normal 9 7 7 7 8 Malfunction of fin thermal 3 9 8 8 7 7 Malfunction of sensor system 0 9 8 7 7 8 Voltage shortage 3 9 7 7 8 7 Instantaneous ove...

Page 97: ...ecking will be required make sure to execute continuity check yourself to grasp the equipment system correctly Grasping the actual system can suggest measures for improving incorrect branch wiring or for better location of DIII NET expander adapters It is also valid measure to lay down a temporary wiring for investigation of trouble causes Preparing some cables of VCTF 1 2 mm2 with 100 m in length...

Page 98: ...ich points the waveforms have been acquired It is useful for measurements to provide a temporary distributing cable 3 9 3 Measurement Range Basically time axis lateral axis 50 µs to 100 µs voltage axis longitudinal axis 2 V to 5 V For oscilloscope acquire waveforms with the trigger set to NORMAL mode for easy reading By setting the trigger to AUTO mode waveforms displayed may immediately disappear...

Page 99: ...se Too long wiring length too many units connected or branches of wiring Installation of D III NET expander adapter Separating the system Resistance in the end of line cannot be used Ringing High voltage cables provided close to the transmitting line or multi core cables used Installation of D III NET expander adapter Correction of wiring Noise Close to high voltage cable of inverter Installation ...

Page 100: ...ble explanation can be accepted With this method the causes can be analyzed logically and reasonably and causes can also be narrowed down by using a process of elimination Moreover in explanation or reporting this method can make them persuasive Cause Q of symptom Cause R of symptom Symptom Cause A of cause Q Cause B of cause Q Cause C of cause R Cause D of cause R No problems were found by invest...

Page 101: ... of pressure Faulty actuation of expansion valve Piping resistance high Run out of gas Dirty evaporator Load too small Air flow drop Faulty control PC board Faulty low pressure sensor Faulty expansion valve Faulty control Abnormal piping length Warp Collapse Foreign matter clog Faulty selecting model Outside of application scope Operation capacity low Fan output drop Ventilation path resistance hi...

Page 102: ...essure Outside of scope of using outdoor air temp Fault outdoor thermistor Piping resistance high Faulty model selection Outside of application scope Operation capacity low Non condensible gas mixed Dirty condenser Faulty expansion valve operation Refrigerant over charging Air flow drop Faulty high pressure sensor Warp Collapse Faulty control PC board Faulty suction thermistor Faulty expansion val...

Page 103: ...erature Discharge temperature rises False detection of discharge pipe temperature Faulty discharge pipe control Faulty compressor Refrigerant circulation volume shortage Faulty discharge pipe thermistor Faulty control PC board Faulty liquid injection circuit operation Faulty expansion valve operation Piping resistance high Faulty solenoid valve Faulty expansion valve Faulty control Abnormal piping...

Page 104: ... or between partition plates of heat exchanger come out from contacting part with tube sheet and come into contact with heat exchanger resulting water leakage Water leakage Waterdrop fall down from fin Foreign matter adhesion Structural deformation Water leakage from drain pan Adhesion of waterdrop caused by heat exchange water repellent misting Heat exchanger water repellent Contact drain pan wit...

Page 105: ...ompressor stop start Wet operation Abnormal overheat operation Moisture mixed Foreign matter contamination Clogged oil return capillary Clogged oil separator Refrigerant charging low Faulty expansion valve unit Piping connection with the other way Deformation of piping Faulty solenoid valve unit Foreign matters caught Faulty expansion valve unit Clogged refrigerant filter Shortage of gas Faulty op...

Page 106: ...essor Malfunction of thermistor for discharge pipe Faulty thermistor for low pressure equivalent saturation temperature Malfunction of thermistor for suction pipe Malfunction of thermistor for air heat exchanger temperature Malfunction of thermistor for liquid pipe Liquid receiver L Faulty inverter cooling Faulty inverter cooling Motor for compressor ground fault Short circuit Power unit short cir...

Page 107: ...exchanger Secondary side Malfunction of thermistor for sub tank Malfunciton of oil temperature thermistor system Malfunction of thermistorforheating heat exchange Primary side Compressor overload Motor wire cut for compressor Compressor locked Malfunction of power unit Malfunction of transmission between inverter and control units Malfunction of transmission between main unit and sub remote contro...

Page 108: ... heat exchange temperature Malfunction of Tb sensor J6 Malfunction of sensor for receiver temperature Malfunction of Tl sensor J7 Malfunction of sensor for oil pressure equalizing pipe temperature Malfunction of To sensor J8 Malfunction of sensor for subcooled heat exchanger temperature Malfunction of Tsh sensor J9 Malfunction of sensor for discharge pressure Malfunction of Pc sensor JA Malfunctio...

Page 109: ...5 7 5 5 7 E7 5 7 5 5 5 5 7 5 E9 5 5 7 7 5 5 7 5 5 5 7 5 5 5 H7 5 7 5 7 7 5 7 5 5 5 5 7 5 H9 5 5 7 7 5 5 7 7 HC 5 5 5 7 7 5 7 7 HJ 5 5 5 7 5 5 7 7 HF 5 5 5 5 5 5 7 7 F3 5 7 5 7 5 5 7 7 5 5 5 7 7 F6 5 7 5 5 7 5 7 7 J2 5 7 5 5 7 5 7 7 5 7 5 7 5 5 5 7 J3 5 7 7 5 5 5 7 5 5 5 7 5 5 5 J4 5 7 5 7 7 5 7 5 5 7 J5 5 7 5 7 5 5 7 7 J6 5 7 5 5 7 5 7 7 J7 5 7 5 5 5 5 7 7 J8 5 5 7 7 7 5 7 7 J9 5 5 7 7 5 5 7 7 JA ...

Page 110: ...nverter open phase phase T Malfunction of charging for capacitor in inverter main circuit Check operation not executed U3 Faulty transmission between indoor units and outdoor units Malfunction of I O transmission U4 Faulty transmission between outdoor units faulty transmission between thermal storage units duplication of CT address Malfunction of O O transmission U7 Faulty transmission of other sy...

Page 111: ...7 7 5 7 7 7 5 5 7 7 P3 5 7 7 5 5 5 7 7 P4 5 7 5 7 7 5 7 7 PJ 5 5 5 7 5 5 7 7 U0 5 5 7 7 5 5 7 7 7 7 5 7 7 U1 5 7 7 7 5 5 7 7 U2 5 7 7 5 7 5 7 7 U3 5 7 7 5 5 5 7 7 U4 5 7 5 7 7 5 7 7 U7 5 7 5 5 5 5 7 7 U9 5 5 7 7 5 5 7 7 UA 5 5 7 5 7 5 7 7 UH 5 5 7 5 5 5 7 7 UJ 5 5 5 7 5 5 7 7 UF 5 5 5 5 5 5 7 7 4 ON Malfunction code 1st digit display section Malfunction code 2nd digit display section Master 7 7 Ma...

Page 112: ...drop R S V S T V T R V Compressor operation capacity Measure with clamp meter INV Hz STD1 ON OFF STD2 ON OFF High pressure Measure with pressure gauge service checker After 20 minutes or later from operation start MPa Low pressure Measure with pressure gauge service checker After 20 minutes or later from operation start MPa Liquid pressure Measure with pressure gauge After 20 minutes or later from...

Page 113: ... for Examination 109 E Cases for Examination E Cases for Examination E Cases for Examination E Cases for Examination 1 VRV in General 110 2 Indoor Unit Related Examples 121 3 Malfunction of Transmission Examples 123 ...

Page 114: ...of Diagnosis When examining multiple outdoor units do not inspect only the inverter outdoor units but inspect STD outdoor units 1 and 2 1 2 Malfunction F6 is Displayed during Check Operation in the Winter Season Applicable Models RX Y Q M VRV II series Condition A malfunction F6 overcharge of refrigerant is displayed when a check operation is executed as a test operation under the condition of low...

Page 115: ...it must be connected not only with pipes but with wires 1 4 After Replacement of the Control PC Board Operation does not Start with an Malfunction LC Displayed Applicable Models RXYP KJ and RXEP KJ VRV Plus series Condition After replacement of the control PC board operation does not start with an malfunction LC displayed Cause Operation was initiated without setting the horsepower Measure Set the...

Page 116: ... the slave unit of outdoor multi connection was blinking Cause Instead of connection of outdoor multi terminals Q1 and Q2 outdoor to outdoor F1 and F2 connection was being applied at the time of multiple operation Measure Recovers by correcting the wire connections between outdoor units to outdoor multi Q1 and Q2 Point of Diagnosis Select the method of connection of outdoor units from the followin...

Page 117: ... even if an erroneous connection exists Be sure to execute a test operation check operation on an individual unit Check whether there is an erroneous connection if an malfunction E4 or an malfunction F3 generates on the existing equipment 1 7 Cautions for Demand Control with Externally Controlled Adapter Applicable Models RX Y Q M VRV II series Condition Demand control with an externally controll ...

Page 118: ...e setting of remote controller s thermostat to enabled Point of Diagnosis 1 9 Malfunction Heating Operation Applicable Models VRV in general Type K or later models Condition If all thermostats are turned ON in heating operation heating operation by the indoor units on the lowest floor 2nd floor is not good Cause Due to less pressure loss of pipes refrigerant tends to circulate in the upper floors ...

Page 119: ...power to the crank case heater for 6 hours 1 11 No Heating Operation is Available though Cooling Operation is Possible Fan only Operation Continues with no Malfunction Displayed Applicable Models VRV in general Condition Compressor for one of two systems failed three times Noise is heard on the compressor another system Cause Erroneous connection of wires and pipes Measure Recovers by correcting t...

Page 120: ...ng indoor units work well and reach the set temperature The pressure of the outdoor units for low pressure use evaporating temperature has reached the target value Liquid pipe temperature of the faulty indoor units is 4 to 5 C and gas pipe temperature is 18 to 22 C Cause Liquid pipe at the inlet of indoor unit was bent by hands and broken It caused lacking in gas supply because essential refrigera...

Page 121: ...the electronic expansion valve of outdoor units leading to the wet operation The low pressure at that time comes to be 0 2MPa due to minimum EV opening Measure Recovers by correcting the refrigerant to the specified amount Point of Diagnosis 1 Use a manifold gauge to measure the high pressure side of the outdoor unit and the pressure of service port of the liquid side stop valve Then check that th...

Page 122: ... a service checker type III and check whether the superheated degree control of the indoor unit is normal 2 If the above checker is not available use a remote controller to check When replacing the compressor locate the cause of fault of the compressor 1 16 Heating Operation of All Indoor Units is Faulty Applicable Models VRV in general Condition Heating operation of all indoor units is faulty tho...

Page 123: ... uses an electronic expansion valve mounted to the indoor unit to control the flow rate capacity control of refrigerant In heating operation if the temperature of suction air of indoor unit closes to the temperature set by the remote controller capacity flow rate of refrigerant is adjusted by closing the opening degree of the electronic expansion valve Therefore if the temperature of liquid pipe o...

Page 124: ...th the pump stopped Measure Recovers by correcting the wiring of the cooling heating select remote controller If a heating operation is displayed in the cooling only model confirm the terminal connection section of the cooling heating select remote controller of the outdoor unit Point of Diagnosis 1 19 High pressure Shutdown Occurs only When the STD Compressor Starts Applicable Models VRV in gener...

Page 125: ...ture is displayed on the centralized controller Temperature is displayed on the remote controller Cause Since the outside air processing air conditioner is controlled based on the discharge air set temperature of the discharge air is displayed on the remote controller Type M or later models Therefore temperature is not displayed on the centralized controller due to the difference in meaning of set...

Page 126: ...one from the humidifier are designed to flow together to the drain up kit and the drain up kit is designed to operate when voltage is applied However the drain flows back and is not drained completely during operation due to negative pressure on the equipment side and the drain rushes to the drain up kit when the operation is stopped Since the drain up kit does not operate when the power is shut o...

Page 127: ...on line had been laid next to the high voltage line of the elevator Measure Request to correct wiring Point of Diagnosis 3 2 Malfunction of Transmission Examples Malfunction of Transmission due to Wiring next to the High voltage Line for Indoor Unit Applicable Models VRV in general Condition A malfunction U4 sometimes occurred on the specific system Its cause was not located though the transmissio...

Page 128: ...ine However multi core lines are used actually There was also a case where two cores out of four cores were being used for power supply Measure Request to correct the wiring Point of Diagnosis 3 4 Malfunction of Transmission Examples Faulty Condition Caused by the Use of Single core Line Applicable Models VRV in general Condition Cause A malfunction U4 is issued due to a single core line used as a...

Page 129: ...Measure The short circuit line was removed Before taking measures check the condition because the forced stop input may have been wired intentionally based on the facility conditions on site Point of Diagnosis 3 6 Malfunction of Transmission Examples An Malfunction U4 is Issued Applicable Models VRV in general Condition Cause DIII NET adapter was installed on the indoor to outdoor line An malfunct...

Page 130: ...re Completed by mounting a DIII NET expander adapter Point of Diagnosis 3 8 Malfunction of Transmission Examples Faulty Condition Caused by Branch Lines Applicable Models VRV in general Condition A transmission malfunction occurred when the centralized controller was added to the existing system Cause Ten of all indoor to outdoor lines were branch lines from a single bus cable Measure Corrected IN...

Page 131: ...layback of Data Recorded 144 4 Collection and Playback of Data on Checker 146 4 1 Retrieval of Raw Data 147 4 2 Retrieval of Processed Data 149 4 3 Data Processing 151 4 4 Organizing Graph 168 4 5 Using Secondary Axis 170 4 6 Traverse of X Axis 172 5 Points of Analysis 178 5 1 Method of Use by Symptom 178 5 2 To Conduct Analysis 178 5 3 Effective Use of Checker 180 5 4 Example of Checker Connectio...

Page 132: ...imer Connection D3 D3 NET connection Soft Ver Support software version A blank is Ver 1 03 or before it PCB PCB connection VRV series HFC Connection Soft Ver Type Model D3 PCB R410A VER II M series Heat Pump RXYQ5 48M Y1 0 1 07 Heat Recovery REYQ5 48M Y1 0 1 08 R407C VRV K series Heat Pump RSXYP5 10K JY1 0 0 Heat Recovery RSEYP8 10K JY1 0 1 04a VRV plus series Cooling Only RSXP16 30K Y1 0 1 06 Hea...

Page 133: ...name is displayed in HiVAV System Since this is a correct display however use these indoor units as it is 8 Connect any model of VRV Plus series to applicable function units or cooling plus units 9 If the Service Checker is connected to the PC board information on indoor units will be integrated into a single indoor unit of data On the Network Map Display window only a single indoor unit of icon i...

Page 134: ... Service Checker makes it possible to check the conditions of and operate indoor units in the following cases The Service Checker Type3 enables the operation equal to that accomplished with centralized controllers With DIII NET connected You are able to check whether the compressor operating frequency is set to low or the number of indoor units with thermostat turned ON is less than required Even ...

Page 135: ...he operating conditions and look at why this control is performed Each stepping down and protection control is used to ensure reliability not to protect malfunctions For example do not determine that the system does not cool or heat due to the activation of the control Verify why the control is activated referring to other data Are discharge superheated degree and suction superheated degree kept a...

Page 136: ... Edition Procedure Select and click an applicable item on the main menu Procedure Click on the Customer Name Site Name registration tab If the Customer Name registration has been made click on the Select customer and select a Customer Name in the list displayed on the window ...

Page 137: ...cker Can Do Service Checker Type3 Application Edition 133 Procedure Register the Customer ID and Customer Name Site Name For the registration only enter the Customer ID and Customer Name For any other items enter them as needed ...

Page 138: ...What Service Checker Can Do Si30 408 134 Service Checker Type3 Application Edition Procedure Register the system Select menu For a new customer or For a project with Customer Name registered ...

Page 139: ...is case clicking on the Yes will stop all systems connected to the DIII NET for a period of several minutes which has ever resulted in a claim regarding the server room of hospital If the Checker is connected to any other systems via Outdoor Outdoor transmission besides the system of outdoor units connected these other systems will go into Restart standby forced thermostat OFF mode After the compl...

Page 140: ... have been made and the window has been switched if no data is read and the above error is displayed on the window the following causes will be supposed F1 and F2 is not well connected PC board is not properly connected or The Checker is not power ON Therefore check to be sure the above connections or else ...

Page 141: ...its are properly read the above window will appear If the above window appears select an operation to be conducted on the menu icons Caution The number of outdoor units varies with the number of sensors Color of unit Red Malfunction Purple Malfunction of transmission Green Operating conditions Thermostat ON on outdoor unit Gray Operation stop Thermostat OFF on outdoor unit ...

Page 142: ...Playback of Operation Data Si30 408 138 Service Checker Type3 Application Edition Selecting recording mode F5 will display the above window Click on the Period rcd set button and make setting of periodical recording ...

Page 143: ...Recording Setting Window Make settings of periodical recording Selection of system to be recorded Be conscious only to select a system for which data should be collected Otherwise data memory will run down in a shorter period of time Setting of conditions for ending recording Normally make this setting to Manual ...

Page 144: ...Edition Make settings of periodical recording Setting of recording intervals Set the recording intervals to 60 seconds unless otherwise specified by Quality Control Dept or else Be sure to check the free data space After the completion of all settings click on the Setting completed button ...

Page 145: ...ttings of periodical recording Click on the Period rcd Start button Periodical recording starts Check whether or not the recording process is in progress Check to be sure In period recording is displayed To end recording Click on the Period rcd end button Terminate the Checker and then disconnect wirings ...

Page 146: ...ion button on the Menu window The centralized operation is the same as operation on centralized remote controller Caution Address settings should be made on the remote controller for indoor units 3 4 Display of Operation Data Display operation data Operation data can be displayed even while in recording mode Click on the Display mode button on the Menu window The above window will be displayed ...

Page 147: ...ion data can be displayed even while in recording mode Click on the Detail data input button on the Menu window The above window will be displayed Digital data will be displayed at the right on the window Eight data e g sensor or ON OFF data selected from the digital data will be displayed in analog form as shown in figure above ...

Page 148: ...ack of operation data Click on the Play button on the Menu window shown above Highlight data to be played back on the operation data shown in figure above and then click on the Ope data disp F1 button Data conversion Convert data on the Checker into spreadsheet software EXCEL Select data and then click on the CSV data output button ...

Page 149: ... the graph for a period of time shortened Reduction F2 Used to display the graph for a period of time prolonged Backward F3 Used to move the graph to the left on the window Forward F4 Used to move the graph to the right on the window Left F5 Used to move a cursor on the graph to the left Right F6 Used to move a cursor on the graph to the right ...

Page 150: ...n a personal computer Since time displayed on the Checker is corresponding to that displayed on the personal computer be sure to check and change the time If settings of screen saver and energy saving are made there may be cases where the personal computer freezes Be sure to cancel the settings in advance 4 Be sure to secure longitudinal data Be sure to check and take notes of on site works and th...

Page 151: ...s data to e mail or else 1 Boot up the Checker software and then click on the Data transfer button 2 Use the following procedure to transfer the data 1 Check the Operation data in initial at this position 2 Highlight data to be retrieved 3 Highlight a drive to transfer the data 4 Highlight a folder to transfer the data 5 Click on the Transfer Execute F1 button ...

Page 152: ...ile data file shown above to the e mail On the contrary in order to read data transmitted on the Checker download transfer the data to Checker by reversing the procedure 2 The following files of two types are transferred to the folder In the case of a single data transfer Customer data file File name Customer ID dak Data file File name Alphanumeric character das ...

Page 153: ...e3 Application Edition 149 4 2 Retrieval of Processed Data 1 Boot up the Checker software and then click on the Play button 2 Use the following procedure to carry out CSV conversion of data 1 Highlight operation data to be retrieved 2 Click on the CSV data output F3 button ...

Page 154: ...layback of Data on Checker Si30 408 150 Service Checker Type3 Application Edition 3 Use the following procedure to save converted data 1 Specify a place to save the data 2 Enter the data name 3 Click on the Save button ...

Page 155: ...ta collected after the CSV conversion This processing is a method of data analysis on the EXCEL window or in graphical form 1 Analysis of EXCEL Data Opening data CSV converted will display the window shown below On this window delete Customer data on Lines 1 through 19 Change the formatting on the first line title of data series ...

Page 156: ...Collection and Playback of Data on Checker Si30 408 152 Service Checker Type3 Application Edition Adjust the width of columns ...

Page 157: ...cker Type3 Application Edition 153 A number of ON and OFF are mixed on the current setting thus making the window hard to read Therefore make settings in accordance with the procedure shown below in order to facilitate reading The following window will be displayed ...

Page 158: ...i30 408 154 Service Checker Type3 Application Edition Only ON s are displayed thus facilitating reading the data It is effective to replace a variety of functional parts and control e g four way valves solenoid valves or drooping control as well ...

Page 159: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 155 Pane fixing ...

Page 160: ...tion and Playback of Data on Checker Si30 408 156 Service Checker Type3 Application Edition The title on the first line and time in Column A of data series is fixed thus facilitating the Verification of data ...

Page 161: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 157 Screening or coloring data to be noted facilitates the analysis on the data ...

Page 162: ... extended period of one or two weeks to verify the case of intermittent occurrences of malfunctions the volume of data will become huge thus taking time to verify the data Using auto filter enables the pinpoint verification of the data thus achieving the reduction in man hour spent for the verification Click on the Data tab and then highlight Filter and then Auto filter on the Menu ...

Page 163: ... Checker Type3 Application Edition 159 Pressing the button corresponding to items to be noted will list and display all elements contained in the column items Left figure lists the column items of Error codes E0 in the list shows that a malfunction has occurred ...

Page 164: ... the causes of the malfunction according to data prior and subsequent to the time when the malfunction occurred Furthermore using the auto filter enables the following verification Check each temperature pressure data for maximum minimum value Extract defrosting and oil return operation and then verify the operation data Edit and print EXCEL data and then carry out an analysis on the data Click on...

Page 165: ...Data on Checker Service Checker Type3 Application Edition 161 On the Page Setup window Printing direction Landscape Paper size Set to A4 or A3 if printable Use the Margins tab to adjust the margin so that the global paper will be printed ...

Page 166: ...Collection and Playback of Data on Checker Si30 408 162 Service Checker Type3 Application Edition ...

Page 167: ... File tab and then highlight the Page Setup On the Sheet menu within the Page Setup window click on the Print titles and Rows to repeat at top and then click on any place on the first line 1 1 will be entered Printing data according to the process above will print the first line at all times thus facilitating the analysis on the data ...

Page 168: ...n Checker Si30 408 164 Service Checker Type3 Application Edition On the Sheet menu within the Page Setup window check the Gridlines box of the Print section Checking on the Print preview window the closing lines of cells are displayed ...

Page 169: ...Setting of reduced print Setting figures in the Enlarged Reduced box to 50 or so initial setting to 100 will make it possible to print all items in a sheet of paper Adjust the percent values in accordance with the number of data items to be printed Print the EXCEL data and check and verify the data ...

Page 170: ...here are cases where it is hard to keep track of the overall variations of data on the CSV data In this case graphing the data will facilitate the verification of the data The following section shows an example of the graphing procedure 1 Method of graphing and organizing a global sheet Run the graph wizard graph insert ...

Page 171: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 167 ...

Page 172: ...Collection and Playback of Data on Checker Si30 408 168 Service Checker Type3 Application Edition 4 4 Organizing Graph ...

Page 173: ...hecker Service Checker Type3 Application Edition 169 As shown in the window in previous page all items contained in the Checker data are graphed Therefore for unnecessary items click on the Legend shown in window below or item lines to delete them ...

Page 174: ...ndary Axis If Opening degree of electronic expansion valve is selected from the data due to large amplitude range of 0 to 2000 pulses the temperature data will be gathered at the bottom of the graph thus resulting in hard verification of data Therefore use the secondary axis to facilitate the reading of the data ...

Page 175: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 171 Reference 1 Reference 2 ...

Page 176: ...of Data on Checker Si30 408 172 Service Checker Type3 Application Edition 4 6 Traverse of X Axis Since the intersection of X and Y axes is 0 on the current graph change this intersection to facilitate the reading of the graph ...

Page 177: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 173 Reference 3 Graphing of ON OFF data on Checker data Convert ON 120 Arbitrary ...

Page 178: ...Collection and Playback of Data on Checker Si30 408 174 Service Checker Type3 Application Edition Reference 4 Adding data after the graph is plotted ...

Page 179: ...Si30 408 Collection and Playback of Data on Checker Service Checker Type3 Application Edition 175 ...

Page 180: ...Collection and Playback of Data on Checker Si30 408 176 Service Checker Type3 Application Edition ...

Page 181: ...e Checker Type3 Application Edition 177 Reference 5 Plotting of data on indoor and outdoor units in one and same graph Caution The data on indoor units are sampled at 5 minute intervals and therefore do not follow the data on outdoor units on an anytime basis ...

Page 182: ...ing degrees are controlled toward closing side Thus the superheated degree will have an increasing tendency If the indoor unit EVs have uniform and same opening degrees outdoor units have output control instructions In this case check to be sure the data on outdoor units In the Case of Malfunction of Heating Check to be sure the temperature detected by high pressure sensor has reached and kept con...

Page 183: ...o not consider that The unit does not cool or heat due to control activated Verify why the control is activated in accordance with other data Are discharge superheated degree and suction superheated degree kept at proper levels respectively Most of malfunctions on compressors result from wet operation Referring to the diagnosis procedure on the preceding page check to be sure the discharge and suc...

Page 184: ...combination enables the collection of effective data If the Checker is connected to PC board no sensor kits can be used in combination Example of connection For RSXYP16KJY1 Information on slave units is omitted Through the ON OFF operation of Injection solenoid valve and the temperature of outlet pipe determine whether or not oil leaks inside the solenoid valve Measure the melting refrigerant into...

Page 185: ...Si30 408 Points of Analysis Service Checker Type3 Application Edition 181 5 4 Example of Checker Connection ...

Page 186: ...e to stop equipment before mounting the thermistor to a low temperature pipe If the pipe is condensed or frozen no accurate measurements are enabled 3 Bring the thermistor into close contact with the pipe in parallel and tightly wind aluminum tape around them 4 Wrap anti sweat insulation tube or the like around pipe and thermistor in order to make them insensitive to ambient temperature 5 Tie both...

Page 187: ...on Edition 183 5 6 Place to Save Data The DIII data is used to save transmission data on air conditioners However this data cannot be analyzed with the Service Checker If Quality Control Department from factory gives an instruction collect and transmit the data ...

Page 188: ...ted on all compressors which have started Td Discharge pipe temp Tc High pressure equivalent saturation temperature Referring to the Checker data graph shown below Even though the compressor reaches the discharge pipe temp of Td Tc 35 C liquid injection is not activated This time no data on compressor stop due to malfunction could be collected Cause of malfunction Since the compressor was shipped ...

Page 189: ...four indoor units in cooling mode in order to set the opening degree of the indoor unit expansion valve to 0 pls Operate the remaining one indoor unit in heating test operation mode The reason is that if there is no indoor unit with thermostat ON while in heating mode no high pressure gas will flow in the discharge gas pipe Making measurement of indoor unit operation data according to the aforemen...

Page 190: ...Points of Analysis Si30 408 186 Service Checker Type3 Application Edition Data on occurrence of malfunction while in all unit heating operation Graph of indoor unit 1 Indoor unit 1 ...

Page 191: ...Si30 408 Points of Analysis Service Checker Type3 Application Edition 187 Graph of indoor unit 2 Indoor unit 2 Graph of indoor unit 3 Indoor unit 3 ...

Page 192: ...Points of Analysis Si30 408 188 Service Checker Type3 Application Edition Graph of indoor unit 4 Indoor unit 4 Graph of indoor unit 5 Indoor unit 5 ...

Page 193: ...TD compressor stops running The opening degree of outdoor unit EV is small Ð Diagnosis The compressor is low in capacity but reaches the target value of Tc and also under heating overload control Consequently the compressor load does not increase even if an increase of the capacity is demanded by the indoor unit Cause Non condensable gas may have mixed in the refrigerant system Countermeasure The ...

Page 194: ...Points of Analysis Si30 408 190 Service Checker Type3 Application Edition ...

Page 195: ...itioners 201 5 1 Wiring Adaptor for Electrical Appendices 2 KRP4A51 52 53 54 201 5 2 Wiring Adaptor for Electrical Appendices 1 KRP2A61 62 209 5 3 External Control Adaptor of Outdoor Unit DTA104A53 61 62 216 5 4 DIII NET Expander Adaptor DTA109A51 221 5 5 Versatile Usage 225 6 How to replace the Compressor 228 7 HRV Related 229 7 1 Group Interlock Control 229 7 2 Centralized Control System 234 7 3...

Page 196: ...erant Si30 408 192 Appendix 1 Characteristics of Refrigerant 1 1 R22 The pressure values in the diagram show absolute pressure Deduct 0 1MPa to obtain gauge pressure R22 P h Diagram Source Japan Association of Refrigerant 1996 ...

Page 197: ... Appendix 193 1 2 R407C The pressure values in the diagram show absolute pressure Deduct 0 1MPa to obtain gauge pressure 20 0 10 0 5 0 2 0 1 0 0 5 0 2 0 1 0 05 0 02 0 01 0 005 50 100 150 200 250 300 350 400 450 500 550 600 650 h kJ kg P MPa ...

Page 198: ... 1 35 32 0 37 6 2 35 53 7 58 3 0 40 2 5 1 40 33 2 38 7 2 40 54 7 59 2 0 45 1 1 5 4 1 45 34 4 39 9 2 45 55 6 60 2 0 50 1 4 7 9 1 50 35 6 41 1 2 50 56 6 61 1 0 55 3 9 10 3 1 55 36 8 42 2 2 60 58 4 62 8 0 60 6 4 12 7 1 60 38 1 43 4 2 70 60 0 64 3 0 65 8 7 14 9 1 65 39 3 44 6 2 80 61 6 65 9 0 70 10 6 16 8 1 70 40 5 45 7 2 90 63 2 67 4 0 75 12 6 18 7 1 75 41 7 46 9 3 00 64 9 68 9 0 80 14 5 20 6 1 80 42...

Page 199: ... Appendix 195 1 3 R410A The pressure values in the diagram show absolute pressure Deduct 0 1MPa to obtain gauge pressure 20 0 10 0 5 0 2 0 1 0 0 5 0 2 0 1 0 05 0 02 0 01 0 005 50 100 150 200 250 300 350 400 450 500 550 600 650 h kJ kg P MPa ...

Page 200: ...8 4 180 4 193 7 208 6 225 6 1 372 1 374 1 375 1 377 1 378 1 379 1 380 1 382 1 384 1 386 1 386 1 388 1 391 1 394 1 397 1 401 1 405 1 409 1 414 1 419 1 424 1 430 1 436 1 442 1 448 1 455 1 461 1 468 1 476 1 483 1 491 1 499 1 507 1 516 1 524 1 533 1 543 1 552 1 563 1 573 1 584 1 596 1 608 1 621 1 635 1 650 1 666 1 683 1 701 1 721 1 743 1 767 1 793 1 822 1 855 1 891 1 932 1 979 2 033 2 095 2 168 2 256 ...

Page 201: ... kg DA Moist Air h x Chart SI Pressure 101 325kPa Temperature 10 to 50 C E n t h a l p y h u m i d i t y r a t i o u d h d x k J k g S p e c i f i c e n t h a l p y h k J k g D A Ice Water R e l a t i v e h u m i d i t y ϕ W e t b u l b t e m p e r a t u r e t C Absolute humidity x kg kg DA Sensible heat factor ...

Page 202: ...52 9 kJ kg Specific volume of discharge air 0 85 m3 kg Cooling capacity is obtained by substituting those values to the above calculation formula Specific volume of discharge air 3600 Cooling capacity Enthalpy of suction air Enthalpy of discharge air Air flow rate 1 1 kW kJ kg kJ kg kg m3 m3 h Cooling capacity 72 7 52 9 0 85 3600 800 1 1 5 18kW Example for heating capacity calculation Suction air ...

Page 203: ...k the model name of the outdoor unit whose control PC board is replaced 2 After checking the model name make settings according to the following table 1 RXY5 48M RX5 48M RXYQ5 48M REYQ8 48M In order to replace by the space PC board change the setting of DIP switch DS2 on the PC board as shown below Default condition of DIP switch 1 2 3 4 DS2 ON OFF 5HP 8HP 10HP 12HP 14HP 16HP DS2 2 OFF OFF ON OFF ...

Page 204: ...place by the space PC board change the setting of DIP switches SS2 to SS5 on the PC board as shown below Note Resetting of power supply switch is neccessary after capacity setting 5L 8L 10L DS1 7 ON OFF ON DS1 8 OFF ON ON ON OFF 1 2 3 4 5 6 7 8 DS1 SS2 SS3 SS4 SS5 A B C D E F G H RSXYP16KJ RSXP16K RSEYP16KJ RSXYP18KJ RSXP18K RSEYP18KJ RSXYP20KJ RSXP20K RSEYP20KJ RSXYP24KJ RSXP24K RSEYP24KJ RSXYP26...

Page 205: ... two remote controller system this adapter is not usable 5 1 1 Part Names and Functions 5 1 2 Wiring 1 For a start make wire connections between the indoor and outdoor units between respective power supplied and between the indoor unit and remote controller and then check whether or not the units normally operate Particularly in order to use the adapter in combination with the group control of the...

Page 206: ... X1A P2 P1 White Indoor unit PC board ass y B2 For input in VOLT mode BC B1 Input A Adapter PC board KRP4A51 52 53 54 G Adapter PC board KRP4A51 52 53 54 Input B B1 B2 BC 12 to 24 VDC Set the INPUT selector switch SS1 to VOLT Factory set VOLT For input in NON VOLT input Set the INPUT selector switch SS1 to NON VOLT VOLT SS1 SS1 NON VOLT Connect the control input on the common side No polarities Us...

Page 207: ...on Function 0 Individual display with input ignored Use the CONTROL MODE selector switch RS1 to make selection and setting of control mode through input A or B Position Function Contents with input A tuned ON Contentswithinput A turned OFF 1 Remote controller inhibited Operation The remote controller is inhibited at all times Stop Remote controller inhibited 2 Centralized priority Operation Remote...

Page 208: ...ssible A Remote controller permitted stop Only remote controller permitted Operation from remote control is impossible B Last pressing priority Operation The remote controller is permitted at all times Stop The remote controller is permitted at all timed NEVER apply voltage to terminal A or A In order to make temperature settings from both remote and remote controllers set this switch to Permitted...

Page 209: ...ct output Allowable current is 10mA to 3A per contact Caution In order to use power supply of 220 240 VAC keep the power supply cable away from input wirings The following table shows the display of output Output Both Ry1 Ry2 are turned OFF RY1 is only turned ON Ry2 is only turned ON Display Stop Normal operation This system stops due to malfunction or transmission error between the adapter PC boa...

Page 210: ...troller and stop 5 Remote controller inhibited Operate Stop Cyclic Instantaneous input 6 Last pressing priority Same as Position 5 Only Remote controller is permitted at all times 7 Remote controller inhibited ON to operate the system Instantaneous input ON to stop the system Instantaneous input 8 Centralized priority ON to operate the system Remote controller permitted Instantaneous input ON to s...

Page 211: ...ote controller side during an operative period of time set by the timer 4 Individual Last pressing priority Used to operate or stop from both the group remote control adapter side and the remote controller side Example of application with remote control mode selector switch RS1 set to Position No 6 The following diagram shows the time chart of remote controller commands and indoor unit against inp...

Page 212: ...ntrollers is set to Individual last pressing priority and the control mode of the wiring adaptor for electrical appendices 2 is also set to Individual last pressing priority 2 If the system is adaptable to telecommunication with the use of the wiring adaptor for electrical appendices 2 and further the centralized remote controllers are used by the methods listed in table below CN1 CN2 J5 W1 W2 W3 ...

Page 213: ...epresents the wiring adaptor for electrical appendices 1 2 The wiring adaptor for electrical appendices 1 is used to operate all indoor units connected to the centralized control lines i e terminals F1 and F2 under unified control In other words the said indoor units are all operated under one and the same control via the wiring adaptor for electrical appendices 1 from the centralized control moni...

Page 214: ...o information in Wiring to external controller e g centralized control monitor Note No address No settings for centralized control are required Automatic setting Connection to Indoor Unit 1 For Individual control 2 For group unified control For group unified display The wiring procedure is the same as that for the individual control Note The remote controller can be installed on indoor units to wh...

Page 215: ...ting DISPLAY OUTPUT SS 3 Set the display output switch SS3 to Individual PC board ass y PC board ass y PC board ass y PC board ass y PC board ass y PC board ass y PC board ass y 16 units at maximum Remote controller 16 units at maximum Remote controller 64 groups at maximum Remote controller X18A X18A X18A F1 F2 P1 P2 P1 P2 P1 P2 X18A X18A X18A P1 P2 P1 P2 P1 P2 P1 P2 F1 F2 F1 F2 R C F1 F2 F1 F2 F...

Page 216: ...o polarities Use 12 to 24 VDC for the external power supply An approx 10 mA input current is required by a single contact Pay attention to the capacity of the power supply Use micro current contacts Use contacts of minimum applicable load of 12 VDC and 1mA or less Set the INPUT selector switch SS1 to NONE VOLT For input in NONE VOLT input Use micro current contacts Use contacts of minimum applicab...

Page 217: ...itions 7 to A will put the system into forcedly stop function with input A disregarded In Position B the constant input cannot be used for the input B Position Function Contents of input A Function of input B 5 Remote controller inhibited Stops if the input A is turned ON while in operation Operates if the input A is tuned ON while in stop The input B will be put into forcedly OFF function mode If...

Page 218: ...de only to make temperature settings from the distant control No temperature settings are enabled from the remote controller NEVER apply voltage to terminals A or A Set temp C 16 17 18 19 20 21 22 23 24 Resistance value Ω 0 0 3 4 5 0 11 6 13 8 20 0 22 4 28 4 31 0 36 4 39 4 44 8 48 2 52 8 56 6 61 2 65 2 69 4 Set temp C 25 26 27 28 29 30 31 32 Resistance value Ω 73 8 77 8 82 4 85 8 91 0 94 0 99 4 10...

Page 219: ...F Only RY1 is turned ON Only Ry2 is turned ON Individual control or individual display Stop Normal operation The system stops due to malfunction or malfunction of transmission between the adapter PC board and indoor unit Group unified control Stop All units are in normal operation Even a single unit stops due to malfunction or malfunction of transmission between the adapter PC board and indoor uni...

Page 220: ...ing Fan operation For selection of operation mode using the indoor unit remote controller or cooling heating selector remote controller Possible only if outdoor units is RSX Y KY1 YAL TAL type 2 Demand control Low noise control Possible only if outdoor units is RSX Y KY1 YAL TAL type External control adapter of outdoor unit Indoor unit remote controller Cooling heating selector remote controller T...

Page 221: ...dapter so that these wires will not come into contact with the lid of the switch box Power supply connector D1 D2 Don t move it SS1 SS2 To adaptor power supply connector on indoor unit or BS unit Function switch SS1 Factory set On The contents of the address setting switch set the COOL HEAT address demand address or both addresses Microcomputer normal monitor HAP GRN Flickers when the microcompute...

Page 222: ...y with a low level of load at nighttime Notes In order to input the demand low noise control use the switch on the outdoor unit PC board to set mode to low noise control YES 1 Outdoor unit field setting Setting mode 1 Turn ON low noise control as explained in the outdoor unit s service manual Setting mode 2 Match low noise and demand addresses to the external control adapter address 2 External con...

Page 223: ...ol unit Set SS2 of the adaptor to OFF Nominate the MASTER unit and SLAVE units per operation mode group and set them on the outdoor unit s P board ass y Setting switches cannot be switched unless the power is turned on Be sure therefore to turn the power off after switching the switches Setr SS1 of the P board of the oudoor unit set as MASTER to OUT D UNIT See the outdoor unit s CAUTION ON OPERATI...

Page 224: ...Set the COOL HEAT address demand address and low noise address or both as needed Note 2 The outdoor unit can have an independent COOL HEAT address and demand address You can therefore set the operation mode group and demand control group to different ranges Factory set to BOTH SS1 BOTH C H DE FUNCTION Left BOTH Middle C H Right DE LOW NOISE Fig 1 Setting of 5 bit cool heat address by DS1 2 Designa...

Page 225: ... the same control line A single unit of the DIII NET expander adapter enables the connection of 10 outdoor unit and 128 indoor units at maximum 5 4 2 System Configuration 1 The number of units for centralized control can be extended up to 64 groups and 1024 units Using two centralized controllers extends the number up to 128 groups and 1024 units A limit for the number of connectable units with th...

Page 226: ...mum distance 2000 m total wiring length and 16 maximum branches are enabled respectively 3 System design to diversify the risk of centralized control is enabled Conventional system Faulty wirings such as the application of 220 240V may cause the system down If the expander adapter is used Even though only the system goes down at the adapter downward influence on the entire system can be avoided DI...

Page 227: ...of branches 16 A minimum of one or more indoor units or master centralized controller is required for main bus and branch bus respectively A maximum of eight extended adapters are connectable Do not install any expander adapter downstream from the expander adapter i e to the branch bus In the case of individual use of the wiring adaptor for electrical appendices KRP2A or the schedule timer DST301B...

Page 228: ...nits Caution Each range of A and B is individually subject to restrictions on the connection wiring length Refer to information in section Wiring 1 unit 2 units 10 units A B Expander adapter F1 F2 F1 F2 IN OUT IN OUT F1 F2 F1 F2 IN OUT IN OUT F1 F2 IN OUT F1 F2 OUT OUT F1 F2 OUT OUT F1 F2 IN OUT F1 F2 IN OUT F1 F2 IN OUT F1 F2 ...

Page 229: ...ection according to the usage shown in figure below it is possible to design the centralized control system so that the system risk will be diversified Conventional system Faulty wirings such as the application of 200V may cause the system down If the extended adapter is used Even though only the system goes down at the adapter downward influence on the entire system can be avoided AC220 240V AC22...

Page 230: ...ver enables branching shown in figure below Direct branching from the main line is referred to as the primary branching and further branching from the primary branching is referred to as the secondary branching Centralized controller Centralized controller Note Main line Primary branch line Secondary branch line This can be omitted Expander adapter n Conventional system n If the expander adapter i...

Page 231: ... any expansion is scheduled follow an example of basic wiring shown in figure below Example of basic wiring Even though there are several restrictions on the use of expander adapters these restrictions can be relaxed by cutting jumper wires Cut the jumper wire J2 The use of expander adapter in combination with thermal storage controller will be enabled Cut the jumper wire J3 The use of expander ad...

Page 232: ...ischarge pipe of the new compressor to release the sealing nitrogen gas Take note that oil may spout due to the pipe inside pressure if the plug put on the equalizing seat is removed before removing of rubber cap 9 Remove the plug put on the equalizing seat of the new compressor 10 Install the outlet pipe on the equalizing seat of the new compressor 11 Braze the equalizing seat outlet pipe to the ...

Page 233: ... the indoor unit is not in operation Note 1 The remote controller should be connected to the terminal no P1 and P2 the same as the group control wiring of indoor units 2 Since this is two remote controller system for Indoor unit and HRV unit the Master Slave setting is required Example of Control Wiring Switch Setting for HRV Unit No change is required as per factory setting Optional Accessories R...

Page 234: ...the indoor unit If the amount of fresh air is too much the capacity of the indoor unit may reduce and the operating sound might be higher 2 The HRV unit can be operated independently if the fan of indoor unit is in operation 3 Since this is two remote controller system for Indoor unit and HRV unit the Master Slave setting is required Example of Control Wiring Switch Setting for HRV Unit The initia...

Page 235: ...mode and select the low fan speed Operation lamp Operation stop button Operation mode display Operation mode selector Every time the operation mode selector is pressed the operation mode display changes as shown below Example When the FILTER indication appears on the display clean the filter of the HRV unit REMOTE CONTROL TEST TEST H L hr hr 1 2 3 4 Remote controller for VRV BRC1A51 52 61 62 HC009...

Page 236: ...e HRV unit can then be operated independently from the air conditioner When the FILTER indication appears on the display clean the filter of the HRV unit CENTRAL REMOTE CONTROLLER 5 6 7 8 1 2 3 4 00 01 02 03 04 05 06 07 08 09 10 1112 13 14 15 C HOST ZONE SELECT ZONE GROUP No CODE No TEST RESET ALL ALL OK ZONE REF REF CIRCUIT MONITOR ZONE GROUP ZONE SET REF CIRCUIT TEST CODE No No HC0147 OPERATION ...

Page 237: ...unit connected to the central transmission line When you install an adapter PCB for remote control in the indoor unit select the applicable model number of Adapter PCB to be installed Example of Control Wiring Note The central transmission line can be extended up to 1000 m maximum Switch Setting for HRV Unit The initial setting by the remote controller for indoor unit or HRV unit Optional Accessor...

Page 238: ...f HRV unit is not interlocked with the operation of indoor unit under this control system If you like to have an interlocked operation please consider other control system Switch Setting for HRV Unit The initial setting is required by the remote controller for indoor unit or HRV unit No change is required as per factory setting Optional Accessories Required Remote controller Only when you use BRC3...

Page 239: ...on of indoor unit please set the same zone number At that time it is necessary to set the zone operation on the HRV unit 3 It is not possible to operate On Off from the remote controller for the HRV unit in zone 1 4 It is not necessary to set the zone operation mode in zone 2 which is already set at the factory Switch Setting for HRV Unit The initial setting is required by the remote controller fo...

Page 240: ...nsmission Line should be Connected to the Indoor Unit Part 2 If the HRV unit is interlocked to the centralized controller the central transmission line should be connected to the terminal no F1 and F2 of indoor unit Example of Control Wiring Reason The information from the indoor unit cannot be transmitted to the central controller through the HRV unit And also the information from the central con...

Page 241: ...e and exhaust openings If the power is disconnected when the damper is open the damper remains open and the insects may get into the room 2 When you install the remote controller it is possible to have normal operation after the electric power is supplied Example of Control Wiring Switch Setting for HRV Unit Install the remote controller for indoor unit for the initial setting After completion of ...

Page 242: ...he operation of one HRV unit Example of Control Wiring Switch Setting for HRV Unit No change is required as per factory setting Optional Accessories Required Adapter PCB KRP50 2 X9A X10A X11A J1 J2 F1 F2 P1P2 P1P2 JC SS1 1 2 3 L power supply for pilot lamp Pilot lamp KRP50 2 3P connector 2P connector HRV unit Remote controller for HRV unit HC0031 ...

Page 243: ...ng Local wiring Notes The connecting wiring between HRV unit and the terminal for local connection can be extended up to 50 m maximum Switch Setting of HRV Unit No change is required factory setting Optional Accessories Required None Operation of HRV unit Terminal for local connection Capacity of connecting terminal Fresh up Short circuit No voltage normally open contact for micro current 16 V 10 ...

Page 244: ...function 3 Since this is two remote controller system for Indoor unit and HRV unit the Master Slave setting is required Example of Control Wiring Switch Setting of the HRV Unit The initial setting by the remote controller for the indoor unit Precool preheat On Off setting ON 17 27 2 02 Precool preheat time setting Time 17 27 3 1 Preheat extra time setting Time 17 27 9 2 1 setting 01 for 30 02 for ...

Page 245: ...r group control the input from outside controls the operation of ON OFF collectively if it is installed in the one of the unit Example of Control Wiring Switch Setting of HRV Unit No change is required Optional Accessories Required None X9A X10A X11A J1 J2 F1 F2 P1P2 P1P2 JC SS1 Connecting line can be extended up to 50 m HRV unit Terminal for local connection No voltage normally open contact for m...

Page 246: ...ral control 2 The HRV unit judges the ventilation mode individually Example of Control Wiring Switch Setting of the HRV Unit The initial setting is required by the remote controller for indoor unit Collective zone interlock setting OFF as per factory set Optional Accessories Required Central remote controller DCS302B61 X9A X10A X11A J1 J2 F1 F2 P1 P2 P1 P2 JC SS1 F1 F2 P1 P2 P1 P2 X9A X10A X11A J1...

Page 247: ...e PCB of the unit X18A for the indoor unit and X11A for the HRV unit Example of Control Wiring Switch Setting of the HRV Unit The initial setting is required by the remote controller for the indoor unit Collective zone interlock setting OFF Factory setting Optional Accessories Required Schedule timer DST301B61 X9A X10A X11A J1 J2 X18A F1 F2 P1 P2 P1 P2 JC SS1 F1 F2 P1 P2 P1 P2 X9A X10A X11A J1 J2 ...

Page 248: ...RV Unit The initial setting is required by the remote controller for the indoor unit or HRV unit Collective zone interlock setting OFF as per factory setting The setting of switch on the PCB Voltage no voltage changeover switch SS1 no voltage Remote control mode changeover switch RS1 should be selected Optional Accessories Required Adapter PCB for remote control KRP2A61 B1 B2 BC W1 W2 W3 W4 X9A X1...

Page 249: ...dividual operation of each group Zone setting Collective operation for plural group Central transmission line Central remote controller Power supply Unified On Off controller Power supply HC0039 Total evaluation 1 2 2 3 3 3 3 On Off Setting Operation display functions means possible Choise condition HRV unit side Interlocked operation with Energy saving Required Not Required Not required Setting r...

Page 250: ...and no changeable of Ventilation mode Air flow rate CC No interlocked operation with energy saving and changeable of Ventilation mode Air flow rate DD No interlocked operation with energy saving and no changeable of Ventilation mode Air flow rate 5 Interlocked operation setting must not be done for individual zone Because there is no unit to combine in zone except 1 unit ...

Page 251: ...on Outdoor Unit Monitor Mode 61 Setting Mode 1 57 Setting Mode 2 58 Field Settings for the Replacement of the Spare Control PC Board 199 Field Settings from Remote Controller Group No for Centralized Control System 45 Individual Functions for Indoor Unit 43 Forcedly fan ON 52 Four way Valve 85 Freeze up Prevention Control 31 Functional Parts 39 G Guideline for Tightening Flare Nut 19 H Heater Cont...

Page 252: ...e Usage 225 Voltage Characteristic of Pressure Sensor R22 R407C 81 R410A 82 Voltage Measuring Point 80 VRV system multi indoor unit settings 44 W Water Leakage from Indoor Unit 100 Wiring Adaptor for Electrical Appendices 201 209 ...

Page 253: ...e B 12 Type C 13 Cooling Heating Differential 33 D Default condition of DIP switch RSXYP5 8 10L 200 RXY5 48M RX5 48M RXYQ5 48M REYQ8 48M 199 display signals 205 distant control operation 202 Diversification of risk of centralized control system Conventional system 225 extended adapter 225 Drain Pump Control 30 E Electric and Functional Components RSXY8 10K and RSXYP8 10KJ 36 RXY Q 14 16M 38 Electr...

Page 254: ...ttings 51 Settings of Group No 46 Single group Interlocked Operation Basic Pattern 229 Single group Interlocked Operation Direct Duct Connection 230 Solenoid Valve 87 T Target Evaporation Temperature 26 temperature settings 204 the connection wiring to the terminal block 223 The limits for wiring 222 The number of units for centralized control 221 the temperature difference 116 Thermistor Malfunct...

Page 255: ...Printed in Japan 12 2004 AK ...

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