Daikin RXYQ34PY1 [114/398] Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned

Example of connection r 410a type 63 7 thermistor resistance temperature characteristics 65 8 pressure sensor 67 9 method of checking the inverter s power transistors and diode modules 68 6

Index i 6

Part 8 precautions for new refrigerant r 410a 71 6

Piping installation point 61 6

Precautions for new refrigerant r 410a 72 6

Caution in repair 7

Introduction 7

Safety cautions 7

Warning 7

Caution 8

Cautions regarding products after repair 8

Warning 8

Caution 9

Inspection after repair 9

Warning 9

Caution 10

Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10

Using icons 10

Using icons list 10

Preface 11

Part 1 general information 12

E the unit with anti corrosion treatment 13

General information 13

Heat pump rxyq 16ph 18ph 24ph 26ph 28ph 30ph 32ph 34ph 36ph y1 e 38ph 40ph 42ph 44ph 46ph 48ph 50ph 13

Heat pump rxyq 5p 8p 10p 12p 14p 16p 18p 20p 22p y1 e 24p 26p 28p 30p 32p 34p 36p 38p 40p 42p 44p 46p 48p 50p 52p 54p 13

High cop series energy saving series 13

Indoor units 13

Model names of indoor outdoor units 13

Model names of indoor outdoor units si34 601a 13

Note fxdq has following 2 series as show below fxdq p n a vet without drain pump for general asia except for eu china and australia fxdq p n a ve with drain pump bev unit is required for each indoor unit ma na rohs directive models specifications dimensions and other functions are not changed compared with m n type 13

Outdoor units normal series 13

Power supply ve 1 phase 220 240v 50hz v1 1 phase 220 240v 50hz y1 3 phase 380 415v 50hz 13

Series model name power supply 13

600 ceiling mounted cassette type multi flow 14

Ceiling mounted built in type 14

Ceiling mounted cassette corner type 14

Ceiling mounted cassette type double flow 14

Ceiling mounted cassette type multi flow 14

Ceiling mounted duct type 14

Ceiling suspended cassette type connection unit series 14

Ceiling suspended type 14

Concealed floor standing type 14

External appearance 14

Floor standing type 14

General information 3 14

Indoor units 14

Outdoor air processing unit 14

Si34 601a external appearance 14

Slim ceiling mounted duct type 14

Wall mounted type 14

External appearance si34 601a 15

General information 15

Outdoor units 15

Rxyq12p 14p 16p 18p 15

Rxyq20p 22p 24p 26p 28p rxyq30p 32p 34p 36p 15

Rxyq38p 40p 42p 44p 46p rxyq48p 50p 52p 54p 15

Rxyq5p rxyq8p 10p 12p europe 15

Combination of outdoor units 16

Connectable indoor units number and capacity normal series 18

General information 7 18

Model selection 18

Si34 601a model selection 18

Vrv iii heat pump series 18

General information 19

High cop series energy saving series 19

Model selection si34 601a 19

Connectable indoor unit 20

For general asia except for eu china and australi 20

Fxdq p n a ve with drain pump bev unit is required for each indoor unit fxzq only for eu australia 20

In some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 20

Indoor unit capacity 20

Note fxdq has following 2 series as show below fxdq p n a vet without drain pump 20

The total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit 20

Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw 20

Differences from conventional models 21

Part 2 specifications 22

Specifications 2 22

Outdoor unit s 23

Specifications 23

Specifications si34 601a 23

Si34 601a specifications 24

Specifications 13 24

Specifications 25

Specifications si34 601a 25

Si34 601a specifications 26

Specifications 15 26

Specifications 27

Specifications si34 601a 27

Si34 601a specifications 28

Specifications 17 28

Specifications 29

Specifications si34 601a 29

Si34 601a specifications 30

Specifications 19 30

Specifications 31

Specifications si34 601a 31

Si34 601a specifications 32

Specifications 21 32

Specifications 33

Specifications si34 601a 33

Si34 601a specifications 34

Specifications 23 34

Specifications 35

Specifications si34 601a 35

Si34 601a specifications 36

Specifications 25 36

Specifications 37

Specifications si34 601a 37

Si34 601a specifications 38

Specifications 27 38

Specifications 39

Specifications si34 601a 39

Si34 601a specifications 40

Specifications 29 40

Specifications 41

Specifications si34 601a 41

Si34 601a specifications 42

Specifications 31 42

Specifications 43

Specifications si34 601a 43

Ceiling mounted cassette type double flow 44

Indoor units 44

Si34 601a specifications 44

Specifications 33 44

Ceiling mounted cassette type double flow 45

Specifications 45

Specifications si34 601a 45

Ceiling mounted cassette type multi flow 46

Si34 601a specifications 46

Specifications 35 46

Ceiling mounted cassette type multi flow 47

Specifications 47

Specifications si34 601a 47

600 ceiling mounted cassette type multi flow 48

Si34 601a specifications 48

Specifications 37 48

600 ceiling mounted cassette type multi flow 49

Specifications 49

Specifications si34 601a 49

Ceiling mounted cassette corner type 50

Si34 601a specifications 50

Specifications 39 50

Slim ceiling mounted duct type with drain pump 51

Specifications 51

Specifications si34 601a 51

Si34 601a specifications 52

Slim ceiling mounted duct type with drain pump 52

Specifications 41 52

Slim ceiling mounted duct type without drain pump 53

Specifications 53

Specifications si34 601a 53

Si34 601a specifications 54

Slim ceiling mounted duct type without drain pump 54

Specifications 43 54

Slim ceiling mounted duct type pve with drain pump pvet without drain pump 55

Specifications 55

Specifications si34 601a 55

Ceiling mounted built in type 56

Si34 601a specifications 56

Specifications 45 56

Ceiling mounted built in type 57

Specifications 57

Specifications si34 601a 57

Ceiling mounted built in type 58

Si34 601a specifications 58

Specifications 47 58

Ceiling mounted duct type 59

Specifications 59

Specifications si34 601a 59

Ceiling mounted duct type 60

Si34 601a specifications 60

Specifications 49 60

Ceiling suspended type 61

Specifications 61

Specifications si34 601a 61

Si34 601a specifications 62

Specifications 51 62

Wall mounted type 62

Specifications 63

Specifications si34 601a 63

Wall mounted type 63

Floor standing type 64

Si34 601a specifications 64

Specifications 53 64

Floor standing type 65

Specifications 65

Specifications si34 601a 65

Concealed floor standing type 66

Si34 601a specifications 66

Specifications 55 66

Concealed floor standing type 67

Specifications 67

Specifications si34 601a 67

Bev units 68

Ceiling suspended cassette type 68

Si34 601a specifications 68

Specifications 57 68

Outdoor air processing unit 69

Specifications 69

Specifications si34 601a 69

Functional parts layout 9 70

Part 3 refrigerant circuit 70

Refrigerant circuit 0 70

Refrigerant flow for each operation mode 4 70

Refirgerant circuit 71

Refrigerant circuit 71

Refrigerant circuit si34 601a 71

Rxyq5p 71

Refirgerant circuit 61 72

Rxyq5p 72

Si34 601a refrigerant circuit 72

Refirgerant circuit 73

Refrigerant circuit si34 601a 73

Rxyq8p 73

Refirgerant circuit 63 74

Rxyq8p 74

Si34 601a refrigerant circuit 74

Refirgerant circuit 75

Refrigerant circuit si34 601a 75

Rxyq10p 12p 75

Refirgerant circuit 65 76

Rxyq10p 12p 76

Si34 601a refrigerant circuit 76

Refirgerant circuit 77

Refrigerant circuit si34 601a 77

Rxyq14p 16p 18p 77

Refirgerant circuit 67 78

Rxyq14p 16p 18p 78

Si34 601a refrigerant circuit 78

Main control equipment 79

Outdoor air processing unit fxmq125mfv1 250mfv1 79

Refrigerant system 79

Sh control superheated control of heat exchanger outlet sc control subcooling control of heat exchanger outlet 79

Thermistor 79

Front view 80

Functional parts layout 80

Refirgerant circuit 69 80

Rxyq5p 80

Si34 601a functional parts layout 80

Front view 81

Functional parts layout si34 601a 81

Refirgerant circuit 81

Rxyq8p 81

Accumulator 82

Front view 82

Heat exchanger 82

Refirgerant circuit 71 82

Rxyq10p 12p 12p europe 82

Si34 601a functional parts layout 82

Accumulator 83

Front view 83

Functional parts layout si34 601a 83

Heat exchanger 83

Refirgerant circuit 83

Rxyq12p 83

Accumulator 84

Front view 84

Heat exchanger 84

Refirgerant circuit 73 84

Rxyq14p 16p 18p 84

Si34 601a functional parts layout 84

Refirgerant circuit 85

Refrigerant flow for each operation mode 85

Refrigerant flow for each operation mode si34 601a 85

Rxyq5p cooling operation 85

Cooling oil return operation 86

Refirgerant circuit 75 86

Si34 601a refrigerant flow for each operation mode 86

Heating oil return defrost operation 87

Refirgerant circuit 87

Refrigerant flow for each operation mode si34 601a 87

Heating operation 88

Refirgerant circuit 77 88

Si34 601a refrigerant flow for each operation mode 88

Refirgerant circuit 89

Refrigerant flow for each operation mode si34 601a 89

Rxyq8p cooling operation 89

Cooling oil return 90

Refirgerant circuit 79 90

Si34 601a refrigerant flow for each operation mode 90

Heating oil return defrost 91

Refirgerant circuit 91

Refrigerant flow for each operation mode si34 601a 91

Heating operation 92

Refirgerant circuit 81 92

Si34 601a refrigerant flow for each operation mode 92

Refirgerant circuit 93

Refrigerant flow for each operation mode si34 601a 93

Rxyq10p 12p cooling operation 93

Cooling oil return 94

Refirgerant circuit 83 94

Si34 601a refrigerant flow for each operation mode 94

Heating oil return defrost 95

Refirgerant circuit 95

Refrigerant flow for each operation mode si34 601a 95

Heating operation 96

Refirgerant circuit 85 96

Si34 601a refrigerant flow for each operation mode 96

Refirgerant circuit 97

Refrigerant flow for each operation mode si34 601a 97

Rxyq14p 16p 18p cooling operation 97

Cooling oil return operation 98

Refirgerant circuit 87 98

Si34 601a refrigerant flow for each operation mode 98

Heating oil return defrost operation 99

Refirgerant circuit 99

Refrigerant flow for each operation mode si34 601a 99

Heating operation 100

Refirgerant circuit 89 100

Si34 601a refrigerant flow for each operation mode 100

Basic control 4 102

Function general 2 102

Other control 23 102

Outline of control indoor unit 29 102

Part 4 function 102

Protection control 18 102

Special control 09 102

Function general 103

Symbol 103

Function 93 104

In the event indoor unit stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 104

Malfunction standby retry 104

Operation mode 104

Si34 601a function general 104

1 pi control evaporator outlet superheated degree sh constant 2 pi control condenser outlet subcooled degree sc constant 1 and 2 refer 6 electronic expansion valve control on page 135 105

Basic control 105

List of functions in normal operation 105

Normal operation 105

Compressor pi control 106

Compressor pi control carries out the compressor capacity pi control to maintain te at constant during cooling operation and tc at constant during heating operation to ensure stable unit performance 106

Cooling operation 106

Heating operation 106

Basic control si34 601a 107

Function 107

Operating priority and rotation of compressors for multi standard connection system 107

Function 97 108

In the case of combination of 3 outdoor units the above diagram shows master unit slave unit 1 and slave unit 2 from left to right compressors may operate in any pattern other than those mentioned above according to the operating status 108

Inv std1 std2 108

No 1 no 4 no 7 108

No 2 no 5 no 8 108

No 3 no 6 no 9 108

Rxyq40p 42p 44p 108

Rxyq46p 48p 108

Rxyq50p 52p 54p 108

Si34 601a basic control 108

Basic control si34 601a 109

Compressor step control multi outdoor unit connection is available on the standard connection system compressor operations vary with the following steps according to information in 2 compressor pi control furthermore the operating priority of compressors is subject to information in 109

Function 109

Notes 1 inv inverter compressor std1 standard compressor 1 std2 standard compressor 2 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 109

Operating priority and rotation of compressors 109

Rxyq10py1 12py1 109

Rxyq14py1 16py1 109

Rxyq18py1 109

Rxyq5py1 109

Rxyq8py1 109

Stand alone installation 109

Function 99 110

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 110

Represents the range in which hz is not stepped up 110

Rxyq20py1 8 12hp 110

Rxyq22py1 10 12hp 110

Si34 601a basic control 110

Two unit multi system 110

Basic control si34 601a 111

Function 111

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 111

Represents the range in which hz is not stepped up 111

Rxyq24py1 8 16hp 111

Rxyq26py1 8 18hp 111

Function 101 112

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 112

Represents the range in which hz is not stepped up 112

Rxyq 32py1 16 16hp 112

Rxyq28py1 30py1 10 12 18hp 112

Si34 601a basic control 112

Basic control si34 601a 113

Function 113

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 113

Represents the range in which hz is not stepped up 113

Rxyq 34py1 16 18hp 113

Rxyq36py1 18 18hp 113

Function 103 114

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 114

Represents the range in which hz is not stepped up 114

Rxyq 40py1 8 16 16hp 114

Rxyq38py1 8 12 18hp 114

Si34 601a basic control 114

Three unit multi system 114

Basic control si34 601a 115

Function 115

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 115

Represents the range in which hz is not stepped up 115

Rxyq 42py1 8 16 18hp 115

Rxyq44py1 8 18 18hp 115

Function 105 116

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 116

Represents the range in which hz is not stepped up 116

Rxyq46py1 48py1 10 12 18 18hp 116

Rxyq50py1 52py1 14 16 18 18hp 116

Si34 601a basic control 116

Basic control si34 601a 117

Function 117

Notes 1 inv inverter compressor std standard compressor figures after on represent the number of std compressors in operation 2 master unit and slave unit in this section are the names for control and they will be transferred according to the priority of rotation system 3 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 117

Rxyq54py1 18 18 18hp 117

Electronic expansion valve pi control 118

Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode 118

Main motorized valve ev1 control carries out the motorized valve y1e pi control to maintain the evaporator outlet superheated degree sh at constant during heating operation to make maximum use of the outdoor unit heat exchanger evaporator 118

Step control of outdoor unit fans 118

Subcooling motorized valve ev2 control makes pi control of the motorized valve y2e to keep the superheated degree of the outlet gas pipe on the evaporator side for the full use of the subcooling heat exchanger 118

The optimum initial value of the evaporator outlet superheated degree is 5 c but varies depending on the discharge pipe superheated degree of inverter compressor 118

Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 118

Outdoor unit fan control in cooling operation 119

While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units 119

Special control 120

Startup control 120

Startup control in cooling operation 120

Startup control in heating operation 120

This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up 120

Large capacity start up control heating 121

Start up std compressors at intervals of 15 seconds 121

In order to prevent the compressor from running out of oil the oil return operation is conducted to recover oil flown out from the compressor to the system side 122

In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxyq14 18p 122

Oil return operation 122

Oil return operation in cooling operation 122

Start conditions referring to the set conditions for the following items start the oil return operation in cooling cumulative oil feed rate timer setting make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned on and then every eight hours furthermore the cumulative oil feed rate is computed from tc te and compressor loads 122

In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the oil return operation non operating unit stops during oil return preparation operation actuators are based on rxyq1 123

Oil return operation in heating operation 123

Defrosting operation 124

In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the defrost operation non operating unit stops during defrost preparation operation actuators are based on rxyq14 18p 124

To defrost the outdoor unit heat exchanger while in evaporator the defrost operation is conducted to recover the heating capacity start conditions referring to the set conditions for the following items start the defrosting operation heat transfer coefficient of the outdoor unit heat exchanger heat exchange temperature tb timer set to two hours at minimum furthermore the heat transfer coefficient of the outdoor unit evaporator is computed from tc te and compressor loads 124

Actuators are based on rxyq14 18p 125

If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted 125

Pump down residual operation 125

Pump down residual operation in cooling operation 125

Pump down residual operation in heating operation 125

Actuators are based on rxyq14 18p 126

Crankcase heater control 126

In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 126

Restart standby 126

Standby 126

Used to forcedly stop the compressor for a period of 3 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 126

Actuators are based on rxyq14 18p 127

In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times 127

Stop due to malfunction 127

Stopping operation 127

This mode is used to define actuator operations when the system stops 127

When system is in stop mode normal operation stop 127

In heating operation the system operates with following mode 128

Stopping operation of slave units during master unit is in operation with multi outdoor unit system 128

While the master unit is in operation this mode is used to set the refrigerant flow rate to a required level using a slave unit in the stopped mode in cooling operation same as that of normal operation stop 128

High pressure protection control 129

In cooling operation 129

In heating operation 129

In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 129

In the case of multi outdoor unit system the entire system performs this control in the following sequence 129

Protection control 129

This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure 129

Hot gas svp off 130

Hot gas svp on 130

In cooling operation 130

In heating operation 130

In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 130

In the case of multi outdoor unit system the entire system performs this control in the following sequence 130

Low pressure protection control 130

Master unit 52 hz off off 130

This low pressure protection control is used to protect compressors against the transient decrease of low pressure 130

Discharge pipe protection control 131

Each compressor performs the discharge pipe temperature protection control individually in the following sequence 131

Inv compressor 131

Std compressor 131

This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 131

Fin temp standby 132

In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 132

Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction or transient inverter overcurrent and fin temperature increase 132

Inverter fin temp 81 c continues for 3 min or more 132

Inverter fin temperature control 132

Inverter overcurrent protection control 132

Inverter protection control 132

Tfin 81 c inv upper limit rps max 132

Under fin temperature protection control 132

When occurring 4 times within 60 min the malfunction code l4 is output 132

For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection 133

Injection control only for rxyq5p 133

Std compressor overload protection 133

This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 133

After oil return operation after defrosting operation at the beginning of the starting control when any of outdoor unit stops for a period of 20 minutes or more in heating there are outdoor units that stop operation in cooling low pressure of all outdoor units in operation is less than 0 5 mpa in cooling 134

Details of outdoor unit rotation in the case of multi outdoor unit system each outdoor unit is given an operating priority for the control outdoor unit rotation makes it possible to change the operating priority of outdoor units thus the system becomes free of compressors that stop over an extended period of time at the time of partial loading preventing unbalanced oil level 134

Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units in heating in cooling 134

In the case of multi outdoor unit system this outdoor unit rotation is used to prevent the compressor from burning out due to unbalanced oil level between outdoor units 134

Other control 134

Outdoor unit rotation 134

Timing of outdoor unit rotation 134

Caution in order to disable the compressor operation due to a failure or else be sure to do so in emergency operation mode never attempt to disconnect power supply wires from magnetic contactors or else doing so will operate compressors in combination that disables oil equalization between the compressors thus resulting in malfunctions of other normal compressors 135

Emergency operation 135

Restrictions for emergency operation 135

In the case of 1 outdoor unit system rxyq8p to 18p 136

In the case of multi outdoor unit system rxyq20p to 54p 136

Note in order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state 137

Demand operation 139

Heating operation is prohibited above 24 c ambient temperature 139

Heating operation prohibition 139

In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting or demand 2 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adapter is required 139

Drain pump control 140

Outline of control indoor unit 140

Louver control for preventing ceiling dirt 142

Thermostat sensor in remote controller 143

Assuming that the suction air temperature at the time of starting the dry operation is tro and the suction air temperature in operation is tr 145

Function 145

Furthermore while in dry operation mode fans operate at l flow rate stops for a period of six minutes while the thermostat is off and then return to operation at l flow rate this control is used to prevent a rise in indoor temperature while in thermostat off mode 145

Outline of control indoor unit si34 601a 145

Thermostat control in dry operation 145

Thermostat control while in normal operation 145

Vrv multi systems are set at factory to thermostat control mode using the remote controller while in normal thermostat differential control mode i e factory set mode the thermostat turns off when the system reaches a temperature of 1 c from the set temperature while in cooling operation or of 1 c from that while in heating operation 145

While in a single remote controller group control the body thermostat is only used fro this control furthermore while in heating operation cassette mounted indoor units conduct the thermostat control by a value compensated by 2 c for the value detected with the body thermostat through field settings the thermostat differential setting can be changed from 1 c to 0 c for details on the changing procedure refer to information on page onward 145

While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 145

Electronic expansion valve control 146

Hot start control in heating operation only 146

Freeze prevention 147

Heater control 147

1 l or ll only on fxfq models 148

2 the heater control on off is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature tc according to the temperature detection through the high pressure sensor sinph of the outdoor unit 148

Fan residual operation while the heater turns off in order to prevent the activation of the thermal protector the fan conducts residual operation for a given period of time after the heater turns off this operation is conducted regardless of with or without heater equipped 148

List of swing flap operations 148

Residual operation time 100 seconds on ceiling suspended type or 60 seconds on other types 148

Swing flaps operate as shown in table below 148

5 5 15 19 149

Control of outdoor air processing unit unique control for outdoor air processing unit 149

Details outdoor air processing unit 149

Objective to select cooling heating or fan operation mode according to the suction air outdoor air temperature 149

Selection of operation mode by suction air thermostat 149

Discharge air 150

Discharge air temperature control 150

Ev ev ev ev ev ev 150

Is ev possible to close 150

Is ev possible to open 150

Refrigerant 150

Sh t3 t2 150

Temp setting 150

Discharge air 151

Ev ev ev ev ev ev 151

Is ev possible to close 151

Is ev possible to open 151

Refrigerant 151

Sc tc t2 151

Temp setting 151

Yes yes 151

Low outdoor air temperature protection control 152

Outdoor unit pc board layout 60 3 field setting 61 154

Part 5 test operation 154

Test operation 44 154

Below fiure shows the installation process install in the order of the steps shown 155

Installation process 155

Test operation 155

Check work prior to turn power supply on 156

Follow the following procedure to conduct the initial test operation after installation 156

Procedure and outline 156

Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 157

Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 157

Check for normal operation 157

Check the led display of the outdoor unit pc board 157

Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 157

Conduct check operations 157

Make field settings if needed for the setting procedure refer to information in 3 field setting from outdoor unit on page 174 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 157

Make field settings with outdoor unit pc board 157

Test operation 157

Test operation si34 601a 157

The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length 157

The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 157

Turn outdoor unit and indoor unit power on 157

Turn power on 157

Absolutely do not open the shutoff valve until the main power ciruit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 158

Air tight test and vacuum drying 158

Always use nitrogen gas for the airtightness test 158

Preparations 158

Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit 158

See shutoff valve operation procedure for details on handling the shutoff valve refer page 149 158

The airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right 158

The refrigerant charge port is connected to unit pipe when shipped the unit contains refrigerant so use caution when attaching the charge hose 158

The shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 158

Additional refrigerant charge and check operation 159

Air tight test and vacuum drying method 159

Before working 159

Note total amount of refrigerant should be 100 kg or less 159

After tightening the cap make sure no refrigerant gas is leaking 160

Be sure to use the correct tools 160

Do not open the shutoff valve until 1 check work prior to turn power supply on in page 145 are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation 160

Shutoff valve operation procedure 160

The shutoff valve is not a back seat type if forced it to open it might break the valve body 160

When operating the shutoff valve follow the procedure instructed below 160

When using a service port use the charge hose 160

3 3 3 3 3 161

3 3 4 3 4 161

3 4 3 3 3 161

4 3 3 3 3 161

5 3 5 5 3 161

How to check how many units are connected 161

It is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 161

Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 161

Procedure of adding refrigerant charging and check operation 162

Fig 31 163

Fig 32 163

Fig 33 163

Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db if you need to speedup in case of multi system connect the refrigerant cylinders to each outdoor unit as shown in the figure 33 163

Open the valve c see the figure 31 the valve a b and the liquid and gas side shutout valve must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port if the additional charging amount was charged fully close the valve c and go to step 5 if the additional charging amount was not charged fully go to step 4 163

Perform the refrigerant charging operation following refrigerant charging operation procedure as shown in page 153 and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit incase of multi system master unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a see the figure 33 for operating the push button and opening and closing the valve follow the work procedure 163

Test operation 163

Test operation si34 601a 163

Refrigerant charging operation procedure 164

Step1 open the liquid and gas side shutoff valves the valve a c must be closed the valve a c means the valves in the figure 33 display of normal system 164

Step2 if necessary set the field setting by using the dip switch on the outdoor unit pc board a1p for how to set see 1 onsite settings with the power off step3 close the el compo box lid and all front panel except on the side of the el compo box 1 and turn the power to the outdoor unit and all connected indoor units 2 after h2p stop blinking about 12 minutes after turning on the power check led displays as shown in the table display of normal system and the system is normal state if h2p is blinking check the malfunction code in the remote controller and correct the malfunction in accordance with remote controller display malfunction code in page 155 1 lead the refrigerant charge hose etc from the pipe intake all front panels must be closed at the procedure 9 2 if you perform the refrigerant charging operation within the refrigerant system that have the power off unit the operation cannot finish properly for confirming the number of the outdoor and indoor units with the power on see how 164

Check of miswiring 165

Check of refrigerant overcharge it takes about 40 minutes to complete the check operation 165

Check of shutoff valve opening 165

Check operation procedure 165

How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 165

Judgment of piping length 165

Note for check operation the following work will be performed 165

Step1 make the onsite setting as needed using the dip switches on the outdoor unit pc board a1p with the power off see 1 onsite settings with the power off step2 close the el compo box lid and all front panels except as the side of the el compo box and turn on the power to the outdoor unit and all connected indoor units be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater step3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 165

Step4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 1 onsite settings with the power on step5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote controller after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote controller correct the malfunction following remote controller displays malfunction code and perform the check operation again 165

If any malfunction codes other than the above are displayed check the service manual for how to respond 166

Remote controller displays malfunction code 166

Onsite settings 167

Onsite settings with the power off 167

Onsite settings with the power on 167

Before test run 168

Test run 168

Checks after test run 169

Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 170

Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 170

Operation when power is turned on 170

Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 170

The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 170

When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 170

When turning on power first time 170

When turning on power the second time and subsequent 170

1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 171

2 set mode display led leds display mode according to the setting 171

3 mode setting switch used to change mode 171

4 local setting switch used to make field settings 171

Outdoor unit pc board 171

Outdoor unit pc board layout 171

Field setting 172

Field setting from remote controller 172

Wireless remote controller indoor unit 173

Simplified remote controller 174

Field setting si34 601a 175

Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by wireless remote controllers so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote controller is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 175

Setting contents and code no vrv indoor unit 175

Test operation 175

Applicable range of field setting 176

Si34 601a field setting 176

Static pressure selection 176

Test operation 165 176

Detailed explanation of setting modes 177

External on off input this input is used for on off operation and protection device input from the outside the input is performed from the t1 t1 terminal of the operation terminal block x1a in the electric component box 177

Fan speed changeover when thermostat is off by setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off 177

Filter sign setting 177

If switching the filter sign on time set as given in the table below set time 177

Setting table 177

Since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 177

Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 177

Air flow adjustment ceiling height make the following setting according to the ceiling height the setting position no is set to 01 at the factory 178

Auto restart after power failure reset 178

Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 2 in the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 178

For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 178

For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 178

In the case of fxaq fxhq 178

In the case of fxfq100 125 178

In the case of fxfq25 80 178

In the case of fxuq71 125 178

Air flow direction setting set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 179

Air flow rate switching at discharge grille for field air flow rate switching when the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 179

Setting of air flow direction adjustment only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 179

Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 179

Setting of the static pressure selection for fxdq model 179

Setting table 179

Note bold face in indicates the default setting 180

Outdoor air processing unit field setting remote controller 180

Centralized control group no setting 181

Brc7c type brc7e type brc4c type 182

Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 182

Group no setting by wireless remote controller for centralized control 1 when in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 set mode no 00 with button 3 set the group no for each group with button advance backward 4 enter the selected group numbers by pushing button 5 push button and return to the normal mode 182

Group no setting example 182

Si34 601a field setting 182

Test operation 171 182

Contents of control modes 183

Setting of operation control mode from remote controller local setting 183

Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 184

Factory setting 184

How to select operation mode whether operation by remote controller will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 184

Field setting from outdoor unit 185

List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 161 onward 185

For setting items of 1 refer to detailed information provided on page 174 onward 186

Caution 187

Dip switch detail 187

Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 187

If the ds1 1 1 4 ds2 2 2 4 setting has not been carried out error code ua are displayed and unit can not be operated 187

Initial conditions of dip switches 187

Make the following settings according to models of outdoor units all models are set to off at factory 187

Refer ds1 1 4 ds2 1 4 setting detail on next page 187

Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 187

Detail of ds1 1 4 ds2 1 4 setting for overseas general 188

7 8 7 7 7 7 190

A setting mode 1 190

Procedure for changing cool heat selection setting 190

Si34 601a field setting 190

Test operation 179 190

This mode is used to set and check the following items 1 set items in order to make cool heat selection in a batch of outdoor unit group change the setting cool heat selection ind used to select cool or heat by individual outdoor unit factory set cool heat selection master used to select cool or heat by outdoor unit group with the master unit cool heat selection slave used to select cool or heat by outdoor unit group with the slave unit 2 check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 setting conditions of cool heat selection individual batch master batch slave 3 low noise operating conditions in normal operation in low noise operation 4 demand operating conditions in normal operation in demand operation 190

B setting mode 2 191

7 7 7 7 7 195

7 7 7 7 8 195

7 7 7 7 9 195

7 7 7 8 7 195

7 7 7 8 8 195

7 7 7 9 7 195

7 7 8 7 7 195

7 7 8 7 8 195

7 7 8 8 7 195

7 7 8 8 8 195

7 7 9 7 7 195

7 8 7 7 7 195

7 8 7 7 8 195

7 8 7 8 7 195

7 8 7 8 8 195

7 8 8 7 7 195

7 8 8 7 8 195

7 8 8 8 7 195

7 8 8 8 8 195

8 7 7 7 7 195

8 7 8 7 7 195

8 7 8 7 8 195

8 7 8 8 7 195

8 8 7 7 8 195

C monitor mode 195

Defrost select setting short 195

Emg operation backup operation setting 195

Field setting si34 601a 195

Setting item 0 display contents of number of units for various settings 195

Tc setting h 195

Te setting h 195

Test operation 195

The numbers in the no column represent the number of times to press the set bs2 button 195

Cool heat mode switching 197

For the details refer to the installation manual supplied together with the indoor unit 197

In the case of wired remote controllers 197

In the case of wireless remote controllers 197

It does not matter whether or not there is outdoor outdoor unit wiring 197

Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by cool heat switching remote controller 197

Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote controller 197

Set cool heat separately for each outdoor unit system by cool heat selector 197

Set cool heat separately for each outdoor unit system by indoor unit remote controller 197

Set cool heat switching to ind individual for setting mode 1 factory set 197

Set outdoor unit pc board ds1 1 to in factory set 197

Set the master unit indoor unit having the right to select the cooling heating operation mode 197

There are the following 4 cool heat switching modes 197

It does not matter whether or not there is outdoor outdoor unit wiring 198

Set cool heat separately for each outdoor unit system by cool heat selector 198

Set cool heat switching to ind individual for setting mode 1 factory set 198

Set outdoor unit pc board ds1 1 to out factory set 198

Multi outdoor units connection 199

Multi outdoor units connection 200

Address setting for 201

Set lower 5 digits with binary number no to no 1 201

Supplementation on 201

When switching cool heat for each adapter pc board with the use of more than one adapter pc board set the address of the external control adaptor for outdoor unit pc board ds1 and ds2 so that it matches the unified cool heat address of outdoor unit main pc board 201

Setting of low noise operation and demand operation 202

Image of operation in the case of a 203

Image of operation in the case of a and b 203

Image of operation in the case of b 203

A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 204

B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 204

Setting of demand operation by connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 204

Field setting si34 601a 205

Image of operation in the case of a 205

Image of operation in the case of a and b 205

Image of operation in the case of b 205

Test operation 205

Setting of refrigerant recovery mode 208

Check operation detail 209

In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 209

Operating procedure 209

Press mode button bs1 once and reset setting mode 2 209

Setting of vacuuming mode 209

Use the vacuum pump to perform vacuuming operation 209

With setting mode 2 while the unit stops set refrigerant recovery vacuuming mode to on the expansion valves of indoor and outdoor units fully open and some of solenoid valves open h2p blinks to indicate the test operation and the remote controller displays test operation and under centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation 209

Part 6 troubleshooting 210

Symptom based troubleshooting 01 2 troubleshooting by remote controller 04 210

Troubleshooting by indication on the remote controller 20 210

Troubleshooting op central remote controller 97 211

Troubleshooting op unified on off controller 05 211

Symptom based troubleshooting 212

Inspection mode 215

Local setting mode service mode 215

Normal mode 215

Test operation mode 215

The following modes can be selected by using the inspection test operation button on the remote control 215

The inspection test button 215

Troubleshooting by remote controller 215

Self diagnosis by wired remote controller 216

Self diagnosis by wireless remote controller 217

The lower digit of the code changes as shown below when the up and down buttons are pressed 218

Operation of the remote controller s inspection test operation button 220

Si34 601a troubleshooting by remote controller 220

Troubleshooting 209 220

Remote controller service mode 221

Remote controller self diagnosis function 223

The system operates for malfunction codes indicated in black squares however be sure to check and repair 225

Detail description on next page 227

Malfunction code indication by outdoor unit pc board 227

Push the mode bs1 button and returns to setting mode 1 227

Push the return bs3 button and switches to the initial status of monitor mode 227

Push the return bs3 button once to display first digit of malfunction code 227

Push the set bs2 button and set the led display to a setting item 227

Push the set bs2 button once to display malfunction location 227

Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 227

Push the set bs2 button once to display second digit of malfunction code 227

Refer to p 84 for monitor mode 227

To enter the monitor mode push the mode bs1 button when in setting mode 1 227

Troubleshooting 227

Troubleshooting by remote controller si34 601a 227

Si34 601a troubleshooting by remote controller 228

Troubleshooting 217 228

Detail description on next page 229

Push the mode bs1 button and returns to setting mode 1 229

Push the return bs3 button and switches to the initial status of monitor mode 229

Push the return bs3 button once to display first digit of malfunction code 229

Push the set bs2 button and set the led display to a setting item 229

Push the set bs2 button once to display malfunction location 229

Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 229

Push the set bs2 button once to display second digit of malfunction code 229

Refer to p 84 for monitor mode 229

To enter the monitor mode push the mode bs1 button when in setting mode 1 229

Troubleshooting 229

Troubleshooting by remote controller si34 601a 229

Si34 601a troubleshooting by remote controller 230

Troubleshooting 219 230

A0 indoor unit error of external protection device 231

Actuation of external protection device 231

Applicable models all indoor unit models 231

Defect of indoor unit pc board 231

Detect open or short circuit between external input terminals in indoor unit 231

Improper field set 231

Malfunction decision conditions 231

Method of malfunction detection 231

Remote controller display 231

Supposed causes 231

Troubleshooting 231

Troubleshooting by indication on the remote controller 231

When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 231

A1 indoor unit pc board defect 232

A3 indoor unit malfunction of drain level control system s1l 233

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 234

Si34 601a troubleshooting by indication on the remote controller 234

Troubleshooting 234

Troubleshooting 223 234

A6 indoor unit fan motor m1f lock overload 235

Applicable models all indoor units 235

Detection by failure of signal for detecting number of turns to come from the fan motor 235

Disconnected or faulty wiring between fan motor and pc board 235

Fan motor lock 235

Malfunction decision conditions 235

Method of malfunction detection 235

Remote controller display 235

Supposed causes 235

Troubleshooting 235

Troubleshooting by indication on the remote controller si34 601a 235

When number of turns can t be detected even when output voltage to the fan is maximum 235

A7 indoor unit malfunction of swing flap motor m1s 236

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 237

Troubleshooting 237

Troubleshooting by indication on the remote controller si34 601a 237

A9 indoor unit malfunction of moving part of electronic expansion valve y1e 238

Applicable models all indoor unit models 238

Defect of connecting cable 238

Defect of indoor unit pc board 238

Malfunction decision conditions 238

Malfunction of moving part of electronic expansion valve 238

Method of malfunction detection 238

Remote controller display 238

Si34 601a troubleshooting by indication on the remote controller 238

Supposed causes 238

Troubleshooting 238

Troubleshooting 227 238

Use a microcomputer to check the electronic expansion valve for coil conditions 238

When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 238

Coil check method for the moving part of the electronic expansion valve disconnect the electronic expansion valve from the pc board and check the continuity between the connector pins 239

Continuity no continuity 239

Normal 239

Af indoor unit drain level above limit 240

Aj indoor unit malfunction of capacity determination device 241

Applicable models all indoor unit models 242

C4 indoor unit malfunction of thermistor r2t for heat exchanger 242

Defect of indoor unit pc board 242

Defect of thermistor r2t for liquid pipe 242

Malfunction decision conditions 242

Malfunction detection is carried out by temperature detected by heat exchanger thermistor 242

Method of malfunction detection 242

Refer to thermistor resistance temperature characteristics table on p365 242

Remote controller display 242

Si34 601a troubleshooting by indication on the remote controller 242

Supposed causes 242

Troubleshooting 242

Troubleshooting 231 242

When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 242

Applicable models all indoor unit models 243

C5 indoor unit malfunction of thermistor r3t for gas pipes 243

Defect of indoor unit pc board 243

Defect of indoor unit thermistor r3t for gas pipe 243

Malfunction decision conditions 243

Malfunction detection is carried out by temperature detected by gas pipe thermistor 243

Method of malfunction detection 243

Refer to thermistor resistance temperature characteristics table on p365 243

Remote controller display 243

Supposed causes 243

Troubleshooting 243

Troubleshooting by indication on the remote controller si34 601a 243

When the gas pipe thermistor becomes disconnected or shorted while the unit is running 243

Applicable models aii indoor unit models 244

C9 indoor unit malfunction of thermistor r1t for suction air 244

Defect of indoor unit pc board 244

Defect of indoor unit thermistor r1t for air inlet 244

Malfunction decision conditions 244

Malfunction detection is carried out by temperature detected by suction air temperature thermistor 244

Method of malfunction detection 244

Refer to thermistor resistance temperature characteristics table on p365 244

Remote controller display 244

Si34 601a troubleshooting by indication on the remote controller 244

Supposed causes 244

Troubleshooting 244

Troubleshooting 233 244

When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 244

Cj indoor unit malfunction of thermostat sensor in remote controller 245

E1 outdoor unit pc board defect 246

E3 outdoor unit actuation of high pressure switch 247

1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 367 2 make a comparison between the high pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 248

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 248

Si34 601a troubleshooting by indication on the remote controller 248

Troubleshooting 248

Troubleshooting 237 248

E4 outdoor unit actuation of low pressure sensor 249

1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on page 367 2 make a comparison between the low pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 250

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 250

Si34 601a troubleshooting by indication on the remote controller 250

Troubleshooting 250

Troubleshooting 239 250

E5 outdoor unit inverter compressor motor lock 251

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 252

Si34 601a troubleshooting by indication on the remote controller 252

Troubleshooting 252

Troubleshooting 241 252

Abnormal case 253

Applicable models rxyq5p 54p 253

Closed stop value 253

Detects the overcurrent with current sensor ct 253

E6 outdoor unit std compressor motor overcurrent lock 253

Faulty compressor 253

Faulty current sensor a6p a7p 253

Faulty magnetic switch 253

Improper power voltage 253

Malfunction decision conditions 253

Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 253

Method of malfunction detection 253

Obstacles at the air outlet 253

Remote controller display 253

Supposed causes 253

The current sensor value is 0 during std compressor operation 253

The current sensor value is more than 15 a during std compressor stop 253

Troubleshooting 253

Troubleshooting by indication on the remote controller si34 601a 253

V unit 15 a 253

E7 outdoor unit malfunction of outdoor unit fan motor 254

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 255

Troubleshooting 255

Troubleshooting by indication on the remote controller si34 601a 255

Note refer check 1 and 2 to p 11 256

Si34 601a troubleshooting by indication on the remote controller 256

Troubleshooting 256

Troubleshooting 245 256

E9 outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 257

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 258

Si34 601a troubleshooting by indication on the remote controller 258

Troubleshooting 258

Troubleshooting 247 258

Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor 259

Applicable models rxyq5p 54p 259

F3 outdoor unit abnormal discharge pipe temperature 259

Faulty connection of discharge pipe temperature sensor 259

Faulty discharge pipe temperature sensor 259

Faulty outdoor unit pc board 259

Malfunction decision conditions 259

Method of malfunction detection 259

Refer to thermistor resistance temperature characteristics table on p366 259

Remote controller display 259

Supposed causes 259

Troubleshooting 259

Troubleshooting by indication on the remote controller si34 601a 259

When the discharge pipe temperature rises to an abnormally high level when the discharge pipe temperature rises suddenly 259

F6 outdoor unit refrigerant overcharged 260

Abnormal fan motor signal circuit malfunction 261

Applicable models rxyq5p 54p 261

Broken short or disconnection connector of fan motor connection cable 261

Detection of abnormal signal from fan motor 261

Disconnect connector x2a and measure the following resistance 261

Fan inverter pc board malfunction 261

H7 outdoor unit abnormal outdoor fan motor signal 261

In case of detection of abnormal signal at starting fan motor 261

Malfunction decision conditions 261

Method of malfunction detection 261

Remote controller display 261

Supposed causes 261

Troubleshooting 261

Troubleshooting by indication on the remote controller si34 601a 261

Applicable models rxyq5p 54p 262

Defect of outdoor unit pc board a1p 262

Defect of thermistor r1t for outdoor air 262

H9 outdoor unit malfunction of thermistor r1t for outdoor air 262

Malfunction decision conditions 262

Malfunction is detected from the temperature detected by the outdoor air thermistor 262

Method of malfunction detection 262

Refer to thermistor resistance temperature characteristics table on p365 262

Remote controller display 262

Si34 601a troubleshooting by indication on the remote controller 262

Supposed causes 262

Troubleshooting 262

Troubleshooting 251 262

When the outside air temperature thermistor has short circuit or open circuit 262

Applicable models rxyq5p 54p 263

Faulty current sensor a6p a7p 263

Faulty outdoor unit pc board 263

J2 outdoor unit current sensor malfunction 263

Malfunction decision conditions 263

Malfunction is detected according to the current value detected by current sensor 263

Method of malfunction detection 263

Remote controller display 263

Supposed causes 263

Troubleshooting 263

Troubleshooting by indication on the remote controller si34 601a 263

When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 263

Applicable models rxyq5p 54p 264

Defect of outdoor unit pc board a1p 264

Defect of thermistor connection 264

Defect of thermistor r31t r32t or r33t for outdoor unit discharge pipe 264

J3 outdoor unit malfunction of discharge pipe thermistor r3 r31 33t 264

Malfunction decision conditions 264

Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 264

Method of malfunction detection 264

Note 5 hp class r3t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t 264

Refer to thermistor resistance temperature characteristics table on p366 264

Remote controller display 264

Si34 601a troubleshooting by indication on the remote controller 264

Supposed causes 264

The alarm indicator is displayed when the fan is being used also 264

Troubleshooting 264

Troubleshooting 253 264

When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 264

J5 outdoor unit malfunction of thermistor r2t r7t for suction pipe 265

Applicable models rxyq5p 54p 266

Defect of outdoor unit pc board a1p 266

Defect of thermistor connection 266

Defect of thermistor r4t for outdoor unit coil 266

J6 outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 266

Malfunction decision conditions 266

Malfunction is detected from the temperature detected by the heat exchanger thermistor 266

Method of malfunction detection 266

Refer to thermistor resistance temperature characteristics table on p365 266

Remote controller display 266

Si34 601a troubleshooting by indication on the remote controller 266

Supposed causes 266

Troubleshooting 266

Troubleshooting 255 266

When a short circuit or an open circuit in the heat exchange thermistor is detected 266

Applicable models rxyq5p 54p 267

Defect of thermistor connection 267

Faulty liquid pipe thermistor r6t 267

Faulty outdoor unit pc board 267

J7 outdoor unit malfunction of liquid pipe thermistor r6t 267

Malfunction decision conditions 267

Malfunction is detected according to the temperature detected by liquid pipe thermistor 267

Method of malfunction detection 267

Refer to thermistor resistance temperature characteristics table on p365 267

Remote controller display 267

Supposed causes 267

Troubleshooting 267

Troubleshooting by indication on the remote controller si34 601a 267

When the liquid pipe thermistor is short circuited or open 267

Applicable models rxyq5p 54p 268

Faulty outdoor unit pc board 268

Faulty subcooling heat exchanger gas pipe thermistor r5t 268

J9 outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 268

Malfunction decision conditions 268

Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 268

Method of malfunction detection 268

Refer to thermistor resistance temperature characteristics table on p365 268

Remote controller display 268

Si34 601a troubleshooting by indication on the remote controller 268

Supposed causes 268

Troubleshooting 268

Troubleshooting 257 268

When the subcooling heat exchanger gas pipe thermistor is short circuited or open 268

Applicable models rxyq5p 54p 269

Connection of low pressure sensor with wrong connection 269

Defect of high pressure sensor system 269

Defect of outdoor unit pc board 269

Ja outdoor unit malfunction of high pressure sensor 269

Malfunction decision conditions 269

Malfunction is detected from the pressure detected by the high pressure sensor 269

Method of malfunction detection 269

Refer to pressure sensor pressure voltage characteristics table on p367 269

Remote controller display 269

Supposed causes 269

Troubleshooting 269

Troubleshooting by indication on the remote controller si34 601a 269

Voltage measurement point 269

When the high pressure sensor is short circuit or open circuit 269

Jc outdoor unit malfunction of low pressure sensor 270

Actuation of fin thermal actuates above 93 c 271

Applicable models rxyq5p 54p 271

Defect of fin thermistor 271

Defect of inverter pc board 271

Fin temperature is detected by the thermistor of the radiation fin 271

L4 outdoor unit malfunction of inverter radiating fin temperature rise 271

Malfunction decision conditions 271

Method of malfunction detection 271

Remote controller display 271

Supposed causes 271

Troubleshooting 271

Troubleshooting by indication on the remote controller si34 601a 271

When the temperature of the inverter radiation fin increases above 93 c 271

Inverter pcb for compressor 272

Refer to thermistor resistance temperature characteristics table on p365 272

L5 outdoor unit inverter compressor abnormal 273

Si34 601a troubleshooting by indication on the remote controller 274

Troubleshooting 274

Troubleshooting 263 274

Applicable models rxyq5p 54p 275

Compressor coil disconnected 275

Compressor overload 275

Defect of inverter pc board 275

Faulty compressor 275

L8 outdoor unit inverter current abnormal 275

Malfunction decision conditions 275

Malfunction is detected by current flowing in the power transistor 275

Method of malfunction detection 275

Remote controller display 275

Supposed causes 275

Troubleshooting 275

Troubleshooting by indication on the remote controller si34 601a 275

Troubleshooting output current check 275

When overload in the compressor is detected inverter secondary current 16 a 275

Si34 601a troubleshooting by indication on the remote controller 276

Troubleshooting 276

Troubleshooting 265 276

Applicable models rxyq5p 54p 277

Defect of compressor 277

Defect of inverter pc board 277

Failure to open the stop valve 277

Faulty compressor connection 277

L9 outdoor unit inverter start up error 277

Malfunction decision conditions 277

Method of malfunction detection 277

Pressure differential start 277

Remote controller display 277

Supposed causes 277

This malfunction code will be output if overcurrent occurs at the time of startup 277

Troubleshooting 277

Troubleshooting by indication on the remote controller si34 601a 277

When the startup control is failed when an overcurrent is passed to the inverter due to the malfunction of a compressor or electrical system 277

Si34 601a troubleshooting by indication on the remote controller 278

Troubleshooting 278

Troubleshooting 267 278

Lc outdoor unit malfunction of transmission between inverter and control pc board 279

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 280

Si34 601a troubleshooting by indication on the remote controller 280

Troubleshooting 280

Troubleshooting 269 280

Troubleshooting 281

Troubleshooting by indication on the remote controller si34 601a 281

Applicable models rxyq5p 54p 282

Defect of inverter pc board 282

Defect of k2 relay in inverter pc board 282

Defect of main circuit capacitor 282

Imbalance in supply voltage is detected in pc board imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter consequently the increased ripple is detected 282

Improper main circuit wiring 282

Malfunction decision conditions 282

Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button when the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes 282

Method of malfunction detection 282

Open phase 282

P1 outdoor unit inverter over ripple protection 282

Remote controller display 282

Si34 601a troubleshooting by indication on the remote controller 282

Supposed causes 282

Troubleshooting 282

Troubleshooting 271 282

Voltage imbalance between phases 282

When the resistance value of thermistor becomes a value equivalent to open or short circuited status 282

Applicable models rxyq5p 54p 283

Defect of inverter pc board 283

Defect of radiator fin temperature sensor 283

Malfunction decision conditions 283

Malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 283

Method of malfunction detection 283

P4 outdoor unit malfunction of inverter radiating fin temperature rise sensor 283

Remote controller display 283

Resistance of radiation fin thermistor is detected when the compressor is not operating 283

Supposed causes 283

Troubleshooting 283

Troubleshooting by indication on the remote controller si34 601a 283

When the resistance value of thermistor becomes a value equivalent to open or short circuited status 283

Inverter pcb for compressor 284

Refer to thermistor resistance temperature characteristics table on p365 284

Applicable models rxyq5p 54p 285

Faulty or no field setting after replacing main pc board 285

Malfunction decision conditions 285

Method of malfunction detection 285

Mismatching of type of pc board 285

Pj outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 285

Remote controller display 285

Supposed causes 285

The faulty or no field setting after replacing pc board or faulty pc board combination is detected through communications with the inverter 285

Troubleshooting 285

Troubleshooting by indication on the remote controller si34 601a 285

Whether or not the field setting or the type of the pc board is correct through the communication date is judged 285

Applicable models rxyq5p 54p 286

Defect of outdoor unit pc board a1p 286

Defect of pressure sensor 286

Defect of thermistor r7t or r4t 286

Malfunction decision conditions 286

Malfunction is not decided while the unit operation is continued 286

Method of malfunction detection 286

Microcomputer judge and detect if the system is short of refrigerant 286

Out of gas or refrigerant system clogging incorrect piping 286

Refer to pressure sensor pressure voltage characteristics table on p367 286

Refer to thermistor resistance temperature characteristics table on p365 286

Remote controller display 286

Short of gas malfunction is detected by discharge pipe temperature thermistor 286

Si34 601a troubleshooting by indication on the remote controller 286

Supposed causes 286

Troubleshooting 286

Troubleshooting 275 286

Uo outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 286

Applicable models rxyq5p 54p 287

Defect of outdoor pc board a1p 287

Malfunction decision conditions 287

Method of malfunction detection 287

Power supply open phase 287

Power supply reverse phase 287

Remote controller display 287

Supposed causes 287

The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 287

Troubleshooting 287

Troubleshooting by indication on the remote controller si34 601a 287

U1 reverse phase open phase 287

When a significant phase difference is made between phases 287

U2 outdoor unit power supply insufficient or instantaneous failure 288

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 289

Troubleshooting 289

Troubleshooting by indication on the remote controller si34 601a 289

Si34 601a troubleshooting by indication on the remote controller 290

Troubleshooting 290

Troubleshooting 279 290

Applicable models rxyq5p 54p 291

Check operation is executed or not 291

Check operation is not executed 291

Malfunction decision conditions 291

Malfunction is decided when the unit starts operation without check operation 291

Method of malfunction detection 291

Remote controller display 291

Supposed causes 291

Troubleshooting 291

Troubleshooting by indication on the remote controller si34 601a 291

U3 outdoor unit check operation not executed 291

U4 malfunction of transmission between indoor units 292

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 293

Troubleshooting 293

Troubleshooting by indication on the remote controller si34 601a 293

Applicable models all models of indoor units 294

Connection of two main remote controllers when using 2 remote controllers 294

Defect of indoor unit pc board 294

Defect of remote controller pc board 294

In case of controlling with 2 remote controller check the system using microcomputer is signal transmission between indoor unit and remote controller main and sub is normal 294

Malfunction decision conditions 294

Malfunction of indoor unit remote controller transmission 294

Malfunction of transmission caused by noise 294

Method of malfunction detection 294

Normal transmission does not continue for specified period 294

Remote controller display 294

Si34 601a troubleshooting by indication on the remote controller 294

Supposed causes 294

Troubleshooting 294

Troubleshooting 283 294

U5 indoor unit malfunction of transmission between remote controller and indoor unit 294

U7 indoor unit malfunction of transmission between outdoor units 295

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 296

Si34 601a troubleshooting by indication on the remote controller 296

Troubleshooting 296

Troubleshooting 285 296

Applicable models all models of indoor units 297

Connection between sub remote controllers 297

Defect of remote controller pc board 297

In case of controlling with 2 remote controller check the system using microcomputer if signal transmission between indoor unit and remote controller main and sub is normal 297

Malfunction decision conditions 297

Malfunction of transmission between main and sub remote controller 297

Method of malfunction detection 297

Normal transmission does not continue for specified period 297

Remote controller display 297

Supposed causes 297

Troubleshooting 297

Troubleshooting by indication on the remote controller si34 601a 297

U8 indoor unit malfunction of transmission between main and sub remote controllers 297

U9 indoor unit malfunction of transmission between indoor and outdoor units in the same system 298

Ua improper combination of indoor and outdoor units indoor units and remote controller 299

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 300

Si34 601a troubleshooting by indication on the remote controller 300

The number of indoor units that can be connected to a single outdoor unit system depends on the model of outdoor unit 300

Troubleshooting 300

Troubleshooting 289 300

Uc address duplication of centralized controller 301

Ue malfunction of transmission between centralized controller and indoor unit 302

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 303

Troubleshooting 303

Troubleshooting by indication on the remote controller si34 601a 303

Si34 601a troubleshooting by indication on the remote controller 304

Troubleshooting 304

Troubleshooting 293 304

Applicable models all models of indoor units rxyq5p 54p 305

Defect of indoor unit pc board 305

Failure to execute check operation 305

Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 305

Malfunction decision conditions 305

Method of malfunction detection 305

Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour 305

On check operation the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature 305

Remote controller display 305

Stop valve is left in closed 305

Supposed causes 305

The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 305

Troubleshooting 305

Troubleshooting by indication on the remote controller si34 601a 305

Uf system is not set yet 305

Uh malfunction of system refrigerant system address undefined 306

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 307

Troubleshooting 307

Troubleshooting by indication on the remote controller si34 601a 307

M1 pc board defect 308

Troubleshooting op central remote controller 308

M8 malfunction of transmission between optional controllers for centralized control 309

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 310

Si34 601a troubleshooting op central remote controller 310

Troubleshooting 310

Troubleshooting 299 310

Ma improper combination of optional controllers for centralized control 311

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 312

Si34 601a troubleshooting op central remote controller 312

Troubleshooting 312

Troubleshooting 301 312

Address duplication of centralized controller 313

Applicable models central remote controller intelligent touch controller schedule timer 313

Detect the malfunction according to diii net transmission data 313

Malfunction decision conditions 313

Mc address duplication improper setting 313

Method of malfunction detection 313

Remote controller display 313

Supposed causes 313

Troubleshooting 313

Troubleshooting op central remote controller si34 601a 313

Two or more units of central remote controllers and intelligent touch controllers are connected and all of them are set to master unit central setting or slave unit central setting 313

Two units of schedule timers are connected 313

Master slave unit setting table combination of intelligent touch controller and central remote controller 314

Master unit central connector setting table 314

Si34 601a troubleshooting op central remote controller 314

The master unit central setting connector cn1 x1a is mounted at the factory to independently use a single unit of the intelligent touch controller or a single unit of the central remote controller do not dismount the master unit central setting connector i e use the connector with the factory setting unchanged to independently use the schedule timer insert an independent use setting connector no independent use setting connector has been mounted at the factory insert the connector which is attached to the casing of the main unit in the pc board cn1 x1a independent use connector master unit central setting connector to use two or more central equipment in combination make settings according to the table shown below 314

Troubleshooting 303 314

Operation lamp blinks 316

Troubleshooting op unified on off controller 316

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 317

Troubleshooting 317

Troubleshooting op unified on off controller si34 601a 317

Display under centralized control blinks repeats single blink 318

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 319

Troubleshooting 319

Troubleshooting op unified on off controller si34 601a 319

Si34 601a troubleshooting op unified on off controller 320

Troubleshooting 309 320

Applicable models unified on off controller 321

Central control address group no is not set for indoor unit 321

Detect the malfunction according to diii net transmission data 321

Display under centralized control blinks repeats double blink 321

Improper control range setting switch 321

Improper wiring of transmission wiring 321

Malfunction decision conditions 321

Method of malfunction detection 321

Remote controller display 321

Supposed causes 321

Troubleshooting 321

Troubleshooting op unified on off controller si34 601a 321

Under centralized control repeats double blink 321

When no central control addresses are set to indoor units when no indoor units are connected within the control range 321

Check no 1 check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 322

Check no 2 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected furthermore to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd 322

Si34 601a troubleshooting op unified on off controller 322

Troubleshooting 311 322

Check 3 check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 323

Troubleshooting 323

Troubleshooting op unified on off controller si34 601a 323

Check 4 check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 324

Si34 601a troubleshooting op unified on off controller 324

Troubleshooting 313 324

Example of connection r 410a type 63 7 thermistor resistance temperature characteristics 65 8 pressure sensor 67 9 method of checking the inverter s power transistors and diode modules 68 326

List of electrical and functional parts 48 326

Option list 57 326

Part 7 appendix 326

Piping diagrams 16 326

Piping installation point 61 326

Wiring diagrams for reference 24 326

Outdoor unit 327

Piping diagrams 327

Rxyq5py1 327

Rxyq8p 328

Rxyq10p 12py1 329

Rxyq14p 16p 18py1 330

Electronic expansion valve filter filter 331

Flare connectio 331

Flare connection 331

Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 331

Gas piping connection port 331

Heat exchanger 331

Indoor unit 331

Liquid piping connection port 331

Φ 15 or less attached piping above φ 19 331

Refrigerant pipe connection port diameters 332

Fxmq125mf 200mf 250mfv1 333

Refrigerant pipe connection port diameters 333

Connection unit 334

Fxuq bevq 334

Indoor unit 334

Outdoor unit 335

Rxyq5py1 335

Wiring diagrams for reference 335

Rxyq8py1 336

Rxyq10py1 337

Rxyq12py1 338

Rxyq14p 16p 18py1 339

Field wiring 340

Rxyq5p 8p 10p 12p 14p 16p 18py1 340

Rxyq20p 22p 24p 26p 28p 30p 32py1 341

Rxyq34p 36p 38p 40p 42p 44p 46p 48p 50p 52p 54py1 342

Fxcq20m 25m 32m 63mve 343

Indoor unit 343

Fxcq40m 50m 80m 125mve 344

Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 345

Fxzq20m 25m 32m 40m 50m7v1b 346

Fxkq25ma 32ma 40ma 63mave 347

Fxdq20p 25p 32p fxdq20na 25na 32na 40na 50na 63nave with drain pump 348

Fxdq20p 25p 32p fxdq20n 25n 32n 40n 50n 63nvet without drain pump 349

Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 350

Fxmq40ma 50ma 63ma 80ma 100ma 125mave 351

Fxmq200ma 250mave 352

Fxhq32ma 63ma 100mave 353

Fxaq20ma 25ma 32mave 40ma 50ma 63mave 354

Fxlq20ma 25ma 32ma 40ma 50ma 63mave fxnq20ma 25ma 32ma 40ma 50ma 63mave 355

Fxuq71ma 100ma 125mav1 356

Fxmq125mf 200mf 250mfv1 357

Bevq71ma 100ma 125mave 358

List of electrical and functional parts 359

Outdoor unit 359

Rxyq5py1 8py1 359

Rxyq10py1 12py1 360

Appendix 351 362

C off 87 c on 362

Indoor side 362

Indoor unit 362

Si34 601a list of electrical and functional parts 362

Appendix 363

List of electrical and functional parts si34 601a 363

Only for fxdq20 63n a ve fxdq20 32pve with drain pump type 363

Appendix 353 364

Si34 601a list of electrical and functional parts 364

Appendix 365

K ω 25 c 365

List of electrical and functional parts si34 601a 365

St8602a 6 φ 6 365

St8605 6 φ 8 365

Μ f 400v 365

Appendix 355 366

Si34 601a list of electrical and functional parts 366

Appendix 367

List of electrical and functional parts si34 601a 367

Thermal protector 130 c off 83 c on 367

2 up to 2 adaptors can be fixed for each installation box 3 only one installation box can be installed for each indoor unit 4 up to 2 installation boxes can be installed for each indoor unit 5 installation box no 8 is necessary for second adaptor 6 installation box no 8 is necessary for each adaptor 7 this adaptor is required when connecting with optional controller for centralized control 8 brc2a51 is also available various pc boards 368

Adaptor must be procured on site 368

Appendix 357 368

Note 1 installation box no is necessary for each adaptor marked 368

Note installation box for 368

Operation control system optional accessories 368

Option list 368

Option list of controllers 368

Si34 601a option list 368

System configuration 368

Appendix 369

Building management system 369

Is a registered trade mark of echelon corporation 369

Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 369

Option list si34 601a 369

Please refer to option handbook etc for detail 369

Ppd does not support connection unit series 369

Appendix 359 370

Option lists outdoor unit 370

Order products 370

Rxyq20 36py1 370

Rxyq38 54py1 370

Rxyq5 18py1 370

Si34 601a option list 370

Appendix 371

Option list si34 601a 371

Order products 371

Rxyq16 18phy1 371

Rxyq24 30phy1 371

Rxyq32 50phy1 371

Appendix 361 372

In the case of 2m or less 372

In the case of 2m or more 372

Piping installation point 372

Si34 601a piping installation point 372

Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 372

The projection part between multi connection piping kits 372

When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit 372

The example of a wrong pattern 373

Appendix 363 374

Example of connection 374

Example of connection r 410a type 374

Example refrigerant branch using refnet header 374

Example refrigerant branch using refnet joint 374

How to calculate the additional refrigerant to be charged 374

Pipe size selection 374

Refrigerant branch kit selection 374

Si34 601a example of connection r 410a type 374

A b 2 c 2 d 2 e 2 f 2 g 2 375

Diameter of above case 375

Gas liquid 375

H i j k l m n p 1000 m 375

Indoor units 1 8 375

Note 1 375

Note 2 375

Note 3 375

Outdoor unit refnet joint a g 375

Φ 25 φ 12 375

Φ 31 φ 15 375

Φ 31 φ 19 375

Φ 38 φ 22 375

Appendix 365 376

Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 376

Outdoor unit for fin thermistor r1t 376

Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 376

Si34 601a thermistor resistance temperature characteristics 376

Thermistor resistance temperature characteristics 376

Appendix 377

Outdoor unit thermistors for discharge pipe r3t r3 377

Thermistor resistance temperature characteristics si34 601a 377

Pressure sensor 378

Method of checking the inverter s power transistors and diode modules 379

Diode module checking 380

Power module checking 380

When using the analog type of multiple tester make measurement in resistance measurement mode in the x1 380

When using the digital type of multiple tester make measurement in diode check mode 380

Part 8 382

Part 8 precautions for new refrigerant r 410a 382

Precautions for new refrigerant r 410a 382

Precautions for new refrigerant r 410a 72 382

About refrigerant r 410a 383

Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 383

Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 383

Outline 383

Precautions for new refrigerant r 410a 383

Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 383

The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 383

Precautions for new refrigerant r 410a 373 384

Si34 601a precautions for new refrigerant r 410a 384

Thermodynamic characteristic of r 410a 384

Refrigerant cylinders 385

As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 386

Copper tube material and thickness 386

O soft annealed h hard drawn 386

R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 386

Service tools 386

Tool compatibility 386

Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 387

Differences 2 change of dimension a 387

Flaring tool 387

Specifications 2 dimension a 387

Unit mm 387

Drawings flow charts 396

Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 398

Cautions on product corrosion 398

Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 398

Http www daikin com global_ac 398

If you have any enquiries please contact your local importer distributor and or retailer 398

Printed in japan 07 2007 ak si34 601a 398

Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 398

Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 398

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