Daikin RXY34MYL — устранение неисправностей передачи между блоками кондиционеров [240/346]

Содержание

• Part 3 refrigerant circuit 3 p.2
• Model names of indoor outdoor units 2 external appearance p.2
• Combination of outdoor units 4 capacity range p.2
• Part 2 specifications p.2
• Operation mode 6 2 basic control 7 p.2
• Part 4 function 5 p.2
• Functional parts layout 0 p.2
• R22 heat pump cooling only p.2
• Introduction vi p.2
• Table of contents p.2
• Specifications p.2
• Special control 6 p.2
• Refrigerant flow for each operation mode 3 p.2
• Refrigerant circuit 4 p.2
• R22 heat pump cooling only i p.2
• Part 1 general information p.2
• Protection control 05 p.3
• Part 5 test operation 21 p.3
• Outline of control indoor unit 14 p.3
• Outdoor unit pc board layout 26 3 field setting 27 p.3
• Other control 10 p.3
• Troubleshooting by remote controller 65 p.3
• Troubleshooting by indication on the remote controller 78 p.3
• Test operation 22 p.3
• Part 6 troubleshooting 63 p.3
• List of electrical and functional parts 98 p.5
• Wiring diagrams for reference 71 p.5
• Troubleshooting op unified on off controller 53 p.5
• Part 7 replacement procedure for inv compressor p.5
• Vrv ii rx y 5m to 48m 61 p.5
• Troubleshooting op schedule timer 46 p.5
• Troubleshooting op central remote controller 40 p.5
• Replacement procedure for inv compressor vrv ii rx y 5m 48m 62 p.5
• Piping diagrams 64 p.5
• Part 8 appendix 63 p.5
• Option list 11 p.5
• Thermistor resistance temperature characteristics 21 8 pressure sensor 23 9 method of replacing the inverter s power transistors and diode modules 24 p.6
• Selection of pipe size joints and header 16 p.6
• Piping installation point 14 p.6
• Index i p.6
• Drawings flow charts v p.6
• Warning p.7
• Safety cautions p.7
• Introduction p.7
• Caution in repair p.7
• Warning p.8
• Cautions regarding products after repair p.8
• Caution p.8
• Warning p.9
• Inspection after repair p.9
• Caution p.9
• Caution p.10
• Using icons list p.10
• Using icons p.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 p.10
• Preface p.11
• Part 1 general information p.12
• Model names of indoor outdoor units p.13
• Outdoor units inverter series p.13
• Model names of indoor outdoor units si38 304 p.13
• Indoor units p.13
• General information p.13
• Ceiling mounted duct type p.14
• Ceiling mounted cassette type multi flow p.14
• Ceiling mounted cassette type double flow p.14
• Ceiling mounted cassette corner type p.14
• Ceiling mounted built in type rear suction type p.14
• Ceiling mounted built in type p.14
• Wall mounted type p.14
• Si38 304 external appearance p.14
• Indoor units p.14
• General information 3 p.14
• Floor standing type p.14
• External appearance p.14
• Concealed floor standing type p.14
• Ceiling suspended type p.14
• Ceiling mounted low silhouette duct type p.14
• Outdoor units p.15
• Combination of outdoor units p.16
• Outdoor units p.17
• Indoor units p.17
• General information p.17
• Capacity range si38 304 p.17
• Capacity range p.17
• Specifications p.18
• Part 2 specifications p.18
• Specifications p.19
• Outdoor units p.19
• Specifications 9 p.20
• Si38 304 specifications p.20
• Specifications si38 304 p.21
• Specifications p.21
• Specifications 11 p.22
• Si38 304 specifications p.22
• Specifications si38 304 p.23
• Specifications p.23
• Specifications 13 p.24
• Si38 304 specifications p.24
• Specifications si38 304 p.25
• Specifications p.25
• Specifications 15 p.26
• Si38 304 specifications p.26
• Specifications si38 304 p.27
• Specifications p.27
• Specifications 17 p.28
• Si38 304 specifications p.28
• Specifications si38 304 p.29
• Specifications p.29
• Specifications 19 p.30
• Si38 304 specifications p.30
• Specifications si38 304 p.31
• Specifications p.31
• Specifications 21 p.32
• Si38 304 specifications p.32
• Specifications si38 304 p.33
• Specifications p.33
• Specifications 23 p.34
• Si38 304 specifications p.34
• Specifications si38 304 p.35
• Specifications p.35
• Specifications 25 p.36
• Si38 304 specifications p.36
• Specifications si38 304 p.37
• Specifications p.37
• Specifications 27 p.38
• Si38 304 specifications p.38
• Specifications si38 304 p.39
• Specifications p.39
• Specifications 29 p.40
• Si38 304 specifications p.40
• Specifications si38 304 p.41
• Specifications p.41
• Specifications 31 p.42
• Si38 304 specifications p.42
• Specifications si38 304 p.43
• Specifications p.43
• Specifications 33 p.44
• Si38 304 specifications p.44
• Specifications si38 304 p.45
• Specifications p.45
• Specifications 35 p.46
• Si38 304 specifications p.46
• Specifications p.47
• Specifications si38 304 p.47
• Specifications 37 p.48
• Si38 304 specifications p.48
• Specifications si38 304 p.49
• Specifications p.49
• Specifications 39 p.50
• Si38 304 specifications p.50
• Specifications si38 304 p.51
• Specifications p.51
• Specifications 41 p.52
• Si38 304 specifications p.52
• Indoor units p.52
• Ceiling mounted cassette type double flow p.52
• Specifications si38 304 p.53
• Specifications p.53
• Ceiling mounted cassette type double flow p.53
• Specifications 43 p.54
• Si38 304 specifications p.54
• Ceiling mounted cassette type multi flow p.54
• Specifications p.55
• Ceiling mounted cassette type multi flow p.55
• Specifications si38 304 p.55
• Specifications 45 p.56
• Si38 304 specifications p.56
• Ceiling mounted cassette corner type p.56
• Specifications si38 304 p.57
• Specifications p.57
• Ceiling mounted low silhouette duct type p.57
• Specifications 47 p.58
• Si38 304 specifications p.58
• Ceiling mounted low silhouette duct type p.58
• Specifications si38 304 p.59
• Specifications p.59
• Ceiling mounted built in type p.59
• Specifications 49 p.60
• Si38 304 specifications p.60
• Ceiling mounted built in type p.60
• Specifications si38 304 p.61
• Specifications p.61
• Ceiling mounted built in type p.61
• Specifications 51 p.62
• Si38 304 specifications p.62
• Ceiling mounted built in rear suction type p.62
• Specifications si38 304 p.63
• Specifications p.63
• Ceiling mounted built in rear suction type p.63
• Specifications 53 p.64
• Si38 304 specifications p.64
• Ceiling mounted built in rear suction type p.64
• Specifications si38 304 p.65
• Specifications p.65
• Ceiling mounted duct type p.65
• Ceiling mounted duct type p.66
• Specifications 55 p.66
• Si38 304 specifications p.66
• Specifications si38 304 p.67
• Specifications p.67
• Ceiling suspended type p.67
• Wall mounted type p.68
• Specifications 57 p.68
• Si38 304 specifications p.68
• Wall mounted type p.69
• Specifications si38 304 p.69
• Specifications p.69
• Specifications 59 p.70
• Si38 304 specifications p.70
• Floor standing type p.70
• Specifications p.71
• Floor standing type p.71
• Specifications si38 304 p.71
• Specifications 61 p.72
• Si38 304 specifications p.72
• Concealed floor standing type p.72
• Specifications si38 304 p.73
• Specifications p.73
• Concealed floor standing type p.73
• Refrigerant flow for each operation mode 3 p.74
• Refrigerant circuit 4 p.74
• Part 3 refrigerant circuit p.74
• Functional parts layout 0 p.74
• Refrigerant circuit si38 304 p.75
• Refrigerant circuit p.75
• Refirgerant circuit p.75
• Refrigerant circuit si38 304 p.77
• Refirgerant circuit p.77
• Rxy8 10 12m p.77
• Si38 304 refrigerant circuit p.78
• Rxy8 10 12m p.78
• Refirgerant circuit 67 p.78
• Rxy14 16m p.79
• Refrigerant circuit si38 304 p.79
• Refirgerant circuit p.79
• Si38 304 refrigerant circuit p.80
• Rxy14 16m p.80
• Refirgerant circuit 69 p.80
• Refirgerant circuit p.81
• Functional parts layout si38 304 p.81
• Functional parts layout p.81
• Front view p.81
• Rxy8 10 12m p.82
• Front view p.82
• Rxy14 16m p.83
• Front view p.83
• Si38 304 refrigerant flow for each operation mode p.84
• Rxy5m cooling operation p.84
• Refrigerant flow for each operation mode p.84
• Refirgerant circuit 73 p.84
• Refrigerant flow for each operation mode si38 304 p.85
• Refirgerant circuit p.85
• Cooling oil return operation p.85
• Si38 304 refrigerant flow for each operation mode p.86
• Refirgerant circuit 75 p.86
• Heating oil return defrost operation p.86
• Refrigerant flow for each operation mode si38 304 p.87
• Refirgerant circuit p.87
• Heating operation p.87
• Refirgerant circuit 77 p.88
• Si38 304 refrigerant flow for each operation mode p.88
• Rxy8 10 12m cooling operation p.88
• Refrigerant flow for each operation mode si38 304 p.89
• Refirgerant circuit p.89
• Cooling oil return p.89
• Si38 304 refrigerant flow for each operation mode p.90
• Refirgerant circuit 79 p.90
• Heating oil return defrost p.90
• Refrigerant flow for each operation mode si38 304 p.91
• Refirgerant circuit p.91
• Heating operation p.91
• Si38 304 refrigerant flow for each operation mode p.92
• Rxy14 16m cooling operation p.92
• Refirgerant circuit 81 p.92
• Refirgerant circuit p.93
• Cooling oil return operation p.93
• Refrigerant flow for each operation mode si38 304 p.93
• Si38 304 refrigerant flow for each operation mode p.94
• Refirgerant circuit 83 p.94
• Heating oil return defrost operation p.94
• Refrigerant flow for each operation mode si38 304 p.95
• Refirgerant circuit p.95
• Heating operation p.95
• Special control 6 p.96
• Protection control 05 p.96
• Part 4 part 4 part 4 part 4 function function function function p.96
• Part 4 function p.96
• Outline of control indoor unit 14 p.96
• Other control 10 p.96
• Operation mode 6 2 basic control 7 p.96
• 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 p.97
• Function p.97
• Pump down residual operation p.97
• Operation mode si38 304 p.97
• Operation mode p.97
• Malfunction standby p.97
• Indoor unit thermostat on p.97
• Indoor unit stop or thermostat off p.97
• Normal operation p.98
• Heating operation is not functional at an outdoor air temperature of 25 c or more p.98
• Basic control p.98
• Heating operation p.99
• Cooling operation p.99
• 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 p.99
• Compressor pi control p.99
• 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 p.100
• Function 89 p.100
• Compressor operating priority p.100
• Si38 304 basic control p.100
• Rx y 8 10 12m p.101
• Rx y 5m p.101
• Rx y 24 26 28m p.101
• Rx y 18 20 22m p.101
• Rx y 14 16m p.101
• Function p.101
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions 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 p.101
• Basic control si38 304 p.101
• Si38 304 basic control p.102
• Rx y 34 36 38m p.102
• Rx y 30 32m p.102
• Function 91 p.102
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to the operating conditions 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 p.102
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to on the operating conditions master unit slave unit 1 and slave unit 2 in this section are the names for control and they will be transferred according to the priority of rotation system p.103
• Basic control si38 304 p.103
• Rx y 40 42 44m p.103
• Function p.103
• Si38 304 basic control p.104
• Rx y 46 48m p.104
• Function 93 p.104
• Compressors are operated in the order of descending priorities compressors may operate in a pattern other than those listed in above tables subject to on the operating conditions master unit slave unit 1 and slave unit 2 in this section are the names for control and they will be transferred according to the priority of rotation system p.104
• 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 p.105
• 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 p.105
• 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 p.105
• Electronic expansion valve pi control p.105
• Pc 1 2mpa p.106
• Mpa pc 1 2mpa p.106
• In cooling operation with low outdoor air temperature this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan p.106
• Function 95 p.106
• Fan steps p.106
• Cooling operation fan control p.106
• Si38 304 basic control p.106
• Pc hp pressure sensor detection value p.106
• Pc 1 8mpa p.106
• Startup control in heating operation h p model only p.107
• Startup control in cooling operation p.107
• Startup control p.107
• Special control p.107
• In the case of multi outdoor unit system both master and slave units perform the operations listed in the table above actuators are based on rxy16m p.107
• In the case of multi outdoor unit system both master and slave units perform the operations listed in the table above actuators are based on rx y 16m p.107
• Oil return operation in cooling operation p.108
• Oil return operation p.108
• 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 rx y 16m p.108
• Oil return operation in heating operation h p model only p.109
• Max 8 hours it will depend on the compressor frequency during operation however 2 hours after turning power on first time p.109
• 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 rxy16m p.109
• Defrost operation is started when the outdoor heat exchanger temperature becomes lower than deicer temperature defrost operation is conducted once in max 2 hours p.110
• Pc 1 mpa p.110
• 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 rxy16m p.110
• H p model only p.110
• Defrosting operatio p.110
• Pump down residual operation in heating operation h p model only p.111
• Pump down residual operation in cooling operation p.111
• Pump down residual operation p.111
• Actuators are based on rxy16m p.111
• Actuators are based on rx y 16m p.111
• Restart standby p.112
• Actuators are based on rx y 16m p.112
• When system is in stop mode p.113
• Stopping operation p.113
• Actuators are based on rx y 16m p.113
• In heating operation the system operates in mode a or mode b listed in the table below h p model only p.114
• In cooling operation the system operates in mode a or mode b listed in the table below p.114
• The changeover operation for mode a and b is performed for the reason that the required refrigerant amount varies depending on the indoor unit operation capacity p.114
• Stopping operation of slave units during master unit is in operation with multi outdoor unit system p.114
• Mode b stopping unit storage refrigerant p.114
• Mode a or b operation p.114
• Mode a operating unit collects refrigerant p.114
• Pressure equalization prior to startup p.115
• 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 p.116
• Protection control p.116
• In the case of multi outdoor unit system the entire system performs this control in the following sequence p.116
• In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence p.116
• In heating operation p.116
• In cooling operation p.116
• High pressure protection control p.116
• In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence p.117
• In heating operation p.117
• In cooling operation p.117
• This low pressure protection control is used to protect compressors against the transient decrease of low pressure p.117
• Low pressure protection control p.117
• In the case of multi outdoor unit system the entire system performs this control in the following sequence p.117
• This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature p.118
• Std compressor p.118
• Inv compressor p.118
• Each compressor performs the discharge pipe temperature protection control individually in the following sequence p.118
• Discharge pipe protection control p.118
• Inverter protection control p.119
• Inverter overcurrent protection control p.119
• Inverter fin temperature control p.119
• 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 p.119
• Inv upper limit frequency 1 step 1 min up from current compressor frequency interval p.119
• In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence p.119
• Crankcase heater control p.120
• Controls the crankcase heater to prevent refrigerant from remaining in the inverter and std compressor p.120
• This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking p.120
• Td compressor discharge pipe temperature p.120
• Std compressor overload protection p.120
• Timing of outdoor unit rotation p.121
• Outdoor unit rotation p.121
• Other control p.121
• Master unit slave unit 1 and slave unit 2 in this section are the names for installation they are determined in installation work and not changed thereafter these names are different from master unit and slave unit for control the outdoor unit connected the control wires f1 and f2 for the indoor unit should be designated as master unit consequently the led display on the main pcb for master unit slave unit 1 and slave unit 2 do not change refer to the page 90 p.121
• 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 p.121
• Example the following diagram shows outdoor unit rotation in combination of 3 outdoor units p.121
• 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 p.121
• After oil return operation after defrosting operation at the beginning of the starting control p.121
• Blink h1 p.122
• 777799 99 p.122
• 777779 p.122
• 7777777 7777 p.122
• 777777 p.122
• Restrictions for emergency operation p.122
• Led display p.122
• In the case of 1 outdoor unit system rx y 8 to 16m p.122
• Emergency operation p.122
• In the case of multi outdoor unit system rx y 18 to 48m p.123
• 777797 p.123
• 77779 97 p.123
• 777779 p.123
• 7777777 9 7777777 7 7777777 7 p.123
• 7777777 7777 7 p.123
• 7777777 7777 p.123
• 777777 p.123
• 777797 p.124
• 777779 p.124
• 7777777 7777 p.124
• 777777 p.124
• Note reset the power supply during the outdoor unit is stopping to cancel the automatic backup operation forcibly p.124
• Heating operation prohibition p.124
• Demand operation p.124
• Outline of control indoor unit p.125
• Drain pump control p.125
• Louver control for preventing ceiling dirt p.127
• Thermostat sensor in remote controller p.128
• Freeze prevention p.130
• Test operation 22 p.132
• Part 5 test operation p.132
• Outdoor unit pc board layout 26 3 field setting 27 p.132
• Turn power on p.133
• Test operation p.133
• Procedure and outline p.133
• Follow the following procedure to conduct the initial test operation after installation p.133
• Check work prior to turn power supply on p.133
• Check operation p.134
• 7777777 9 7777777 7 7777777 7 p.134
• 7777777 7777 7 p.134
• Confirmation on normal operation p.135
• When turning on power the second time and subsequent p.136
• When turning on power first time p.136
• When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed p.136
• The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status p.136
• 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 p.136
• Operation when power is turned on p.136
• 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 p.136
• 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 p.136
• 4 local setting switch used to make local settings p.137
• 3 mode setting switch used to change mode p.137
• 2 set mode display led leds display mode according to the setting p.137
• 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs p.137
• Outdoor unit pc board layout p.137
• Outdoor unit pc board p.137
• Field setting from remote controller p.138
• Field setting p.138
• Wireless remote controller indoor unit p.139
• Simplified remote controller p.140
• Group no setting by simplified remote controller p.140
• Brc2a51 p.140
• Test operation p.141
• Setting contents and code no vrv unit p.141
• 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 p.141
• Field setting si38 304 p.141
• Test operation 131 p.142
• Si38 304 field setting p.142
• Applicable range of field setting p.142
• Auto restart after power failure reset p.143
• Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed p.143
• Setting table p.143
• 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 p.143
• If switching the filter sign on time set as given in the table below set time p.143
• 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 p.143
• 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 p.143
• Filter sign setting p.143
• 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 since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration p.143
• Detailed explanation of setting modes p.143
• 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 p.143
• 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 p.144
• In the case of fxf25 80 p.144
• In the case of fxf100 125 p.144
• In the case of fxa fxh p.144
• Air flow direction setting p.144
• 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 p.144
• Setting table p.144
• Setting of air flow direction adjustment only the model fxk has the function when only the front flow is used sets yes no of the swing flap operation of down flow p.144
• Setting table p.145
• Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose p.145
• 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 p.145
• Centralized control group no setting p.146
• Test operation p.147
• Group no setting example p.147
• Field setting si38 304 p.147
• 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 p.147
• Setting of operation control mode from remote controller local setting p.148
• Contents of control modes p.148
• 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 p.149
• Do not select timer operation possible by remote controller if not using a remote controller operation by timer is impossible in this case 1 factory setting p.149
• 7 7 7 7 7 7 9 p.150
• 7 7 7 7 7 7 7 p.150
• Field setting from outdoor unit p.150
• Caution p.150
• 7 8 7 7 7 7 8 p.150
• There are the following three setting modes p.151
• Test operation p.151
• Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system p.151
• Setting mode 1 h1p off initial status when normal used to select the cool heat setting also indicates during abnormal low noise control and demand control p.151
• Monitor mode h1p blinks used to check the program made in setting mode 2 p.151
• Mode changing procedure p.151
• Field setting si38 304 p.151
• A setting mode 1 p.152
• B setting mode 2 p.153
• 8 7 7 7 7 p.157
• 7 7 7 8 7 p.157
• 7 8 8 8 8 p.157
• 7 7 7 7 9 p.157
• Test operation p.157
• 7 8 8 8 7 p.157
• 7 7 7 7 8 p.157
• Te setting h p.157
• 7 8 8 7 8 p.157
• 7 7 7 7 7 p.157
• Tc setting h p.157
• 7 8 8 7 7 p.157
• Setting item 0 display contents of number of units for sequential start and others p.157
• 7 8 7 8 8 p.157
• 7 8 7 8 7 p.157
• Number of units for sequential start 1 unit p.157
• 7 8 7 7 8 p.157
• Medium p.157
• 7 8 7 7 7 p.157
• Field setting si38 304 p.157
• 7 7 9 7 7 p.157
• Emg operation backup operation setting on p.157
• 7 7 8 8 8 p.157
• Defrost select setting short p.157
• C monitor mode p.157
• 7 7 8 8 7 p.157
• 9 7 7 7 7 p.157
• 7 7 8 7 8 p.157
• 8 7 8 8 7 p.157
• 7 7 8 7 7 p.157
• 8 7 8 7 8 p.157
• 7 7 7 9 7 p.157
• 8 7 8 7 7 p.157
• 7 7 7 8 8 p.157
• Cool heat mode switching p.159
• Multi outdoor units connection p.161
• Set lower 5 digits with binary number no to no 1 p.163
• Address setting for p.163
• Setting of low noise operation and demand operation p.164
• Image of operation in the case of b p.165
• Image of operation in the case of a b p.165
• Image of operation in the case of a p.165
• Test operation p.167
• Image of operation in the case of b p.167
• Image of operation in the case of a and b p.167
• Image of operation in the case of a p.167
• Field setting si38 304 p.167
• When additional refrigerant is not charged all with outdoor unit in stop mode operate the outdoor unit and charge the liquid refrigerant from the service port of liquid stop value the additional charging operation is activated by pushbutton switch on the outdoor unit pc board p.170
• Test operation 159 p.170
• Si38 304 field setting p.170
• Setting of refrigerant additional charging operation p.170
• Additional refrigerant charge total flow p.170
• Setting of refrigerant recovery mode p.171
• With setting mode 2 while the unit stops set b 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 in centralized control thus prohibiting operation after setting do not cancel setting mode 2 until completion of vacuuming operation p.172
• When the inverter system malfunctions malfunction of inverter inv compressor to locate where the malfunction occurs switching to the power transistor check mode of inverter in the service mode setting enables not to judge the position detection signal malfunction but to output waveform only during inverter operation the waveform can be checked by disconnecting the wiring of compressor p.172
• Use the vacuum pump to perform vacuuming operation p.172
• To prevent any trouble in the period of installation at site the system is provided with a test operation mode enabling check for incorrect wiring stop valve left in closed coming out or misplacing with suction pipe thermistor of discharge pipe thermistor and judgment of piping length refrigerant overcharging and learning for the minimum opening degree of motorized valve p.172
• Setting of vacuuming mode p.172
• Press mode button bs1 once and reset setting mode 2 p.172
• Power transistor check operation p.172
• Operating procedure p.172
• Note be sure to disconnect the compressor wiring when conducting the check operation mentioned above when the output voltage is approx 50 v 10 hz and the voltage balance between phases u v v w w u is within 5 the inverter pcb is normal p.172
• In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units to turn on some solenoid valves p.172
• Check operation function p.172
• Check operation p.172
• 3883333 p.172
• Part 6 troubleshooting p.174
• Part 6 part 6 part 6 part 6 troubleshooting troubleshooting troubleshooting troubleshooting p.174
• Troubleshooting by remote controller 65 p.174
• Troubleshooting by indication on the remote controller 78 p.174
• Troubleshooting op unified on off controller 53 p.175
• Troubleshooting op schedule timer 46 p.175
• Troubleshooting op central remote controller 40 p.175
• Troubleshooting by remote controller p.176
• The inspection test button p.176
• The following modes can be selected by using the inspection test operation button on the remote control p.176
• Test operation mode p.176
• Normal mode p.176
• Local setting mode service mode p.176
• Inspection mode p.176
• Self diagnosis by wired remote controller p.177
• Self diagnosis by wireless remote controller p.178
• The lower digit of the code changes as shown below when the up and down buttons are pressed p.179
• Operation of the remote controller s inspection test operation button p.181
• Troubleshooting by remote controller si38 304 p.181
• Troubleshooting p.181
• Remote controller service mode p.182
• Remote controller self diagnosis function p.184
• The system operates for malfunction codes indicated in black squares however be sure to check and repair p.186
• To enter the monitor mode push the mode button bs1 when in setting mode 1 p.187
• Refer p 24 for monitor mode p.187
• Push the set button bs2 once to display second digit of malfunction code p.187
• Push the set button bs2 once to display master or slave1 or slave2 and malfunction location p.187
• Push the set button bs2 and set the led display to a setting item p.187
• Push the return button bs3 once to display first digit of malfunction code p.187
• Push the return button bs3 and switches to the initial status of monitor mode p.187
• Push the mode button bs1 and returns to setting mode 1 p.187
• Monitor mode p.187
• Malfunction code indication by outdoor unit pcb p.187
• Detail description on next page p.187
• Troubleshooting by remote controller si38 304 p.187
• Troubleshooting p.187
• Troubleshooting by indication on the remote controller p.189
• Troubleshooting p.189
• Supposed causes p.189
• Remote controller display p.189
• Method of malfunction detection p.189
• Malfunction decision conditions p.189
• Indoor unit error of external protection device p.189
• Improper field set p.189
• Defect of indoor unit pc board p.189
• Applicable models all indoor unit models p.189
• Actuation of external protection device p.189
• Indoor unit pc board defect p.190
• Indoor unit malfunction of drain level control system 33h p.191
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.192
• Troubleshooting 181 p.192
• Troubleshooting p.192
• Si38 304 troubleshooting by indication on the remote controller p.192
• When number of turns can t be detected even when output voltage to the fan is maximum p.193
• Troubleshooting p.193
• Supposed causes p.193
• Remote controller display p.193
• Method of malfunction detection p.193
• Malfunction decision conditions p.193
• Indoor unit fan motor m1f lock overload p.193
• Fan motor lock p.193
• Disconnected or faulty wiring between fan motor and pc board p.193
• Detection by failure of signal for detecting number of turns to come from the fan motor p.193
• Applicable models all indoor units p.193
• Indoor unit malfunction of swing flap motor ma p.194
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.195
• Troubleshooting by indication on the remote controller si38 304 p.195
• Troubleshooting p.195
• When number of turns can t be detected even when output voltage to the fan is maximum p.196
• Troubleshooting p.196
• Supposed causes p.196
• Remote controller display p.196
• Method of malfunction detection p.196
• Malfunction of moving part of electronic expansion valve p.196
• Malfunction decision conditions p.196
• Indoor unit malfunction of moving part of electronic expansion valve 20e p.196
• Detection by failure of signal for detecting number of turns to come from the fan motor p.196
• Defect of indoor unit pc board p.196
• Defect of connecting cable p.196
• Applicable models all indoor unit models p.196
• Continuity no continuity p.197
• 1 coil check method for the moving part of the electronic expansion valve discount the electronic expansion valve from the pc board and check the continuity between the connector pins p.197
• Normal p.197
• Indoor unit drain level above limit p.198
• Indoor unit malfunction of capacity determination device p.199
• When the heat exchanger thermistor becomes disconnected or shorted while the unit is running p.200
• Troubleshooting p.200
• Supposed causes p.200
• Remote controller display p.200
• Method of malfunction detection p.200
• Malfunction detection is carried out by temperature detected by heat exchanger thermistor p.200
• Malfunction decision conditions p.200
• Indoor unit malfunction of thermistor r2t for heat exchanger p.200
• Defect of thermistor r2t for liquid pipe p.200
• Defect of indoor unit pc board p.200
• Applicable models all indoor unit models p.200
• 2 refer to thermistor resistance temperature characteristics table on p321 p.200
• 2 refer to thermistor resistance temperature characteristics table on p321 p.201
• When the gas pipe thermistor becomes disconnected or shorted while the unit is running p.201
• Troubleshooting p.201
• Supposed causes p.201
• Remote controller display p.201
• Method of malfunction detection p.201
• Malfunction detection is carried out by temperature detected by gas pipe thermistor p.201
• Malfunction decision conditions p.201
• Indoor unit malfunction of thermistor r3t for gas pipes p.201
• Defect of indoor unit thermistor r3t for gas pipe p.201
• Defect of indoor unit pc board p.201
• Applicable models all indoor unit models p.201
• Indoor unit malfunction of thermistor r1t for suction air p.202
• Defect of indoor unit thermistor r1t for air inlet p.202
• Defect of indoor unit pc board p.202
• Applicable models aii indoor unit models p.202
• 2 refer to thermistor resistance temperature characteristics table on p321 p.202
• When the suction air temperature thermistor becomes disconnected or shorted while the unit is running p.202
• Troubleshooting p.202
• Supposed causes p.202
• Remote controller display p.202
• Method of malfunction detection p.202
• Malfunction detection is carried out by temperature detected by suction air temperature thermistor p.202
• Malfunction decision conditions p.202
• Indoor unit malfunction of thermostat sensor in remote controller p.203
• Outdoor unit pc board defect p.204
• Outdoor unit actuation of high pressure switch p.205
• Defect of outdoor unit pc board p.206
• Defect of low pressure sensor p.206
• Applicable models rx y 5 48m p.206
• Abnormal drop of low pressure refer to page106 for low pressure control p.206
• 2 refer to pressure sensor pressure voltage characteristics table on p323 p.206
• 1 voltage measurement point p.206
• Troubleshooting p.206
• Supposed causes p.206
• Stop valve is not opened p.206
• Remote controller display p.206
• Outdoor unit actuation of low pressure sensor p.206
• Method of malfunction detection p.206
• Malfunction decision conditions p.206
• Error is generated when the low pressure is dropped under specific pressure p.206
• Malfunction decision conditions p.207
• Inverter pc board takes the position signal from uvwn line connected between the inverter and compressor and detects the position signal pattern p.207
• Incorrect uvwn wiring p.207
• High differential pressure 0 mpa or more p.207
• Faulty inverter pc board p.207
• Compressor motor lock p.207
• Compressor lock p.207
• Applicable models rx y 5 48m p.207
• Troubleshooting p.207
• The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but 2 times cycle when compressor motor locks when the position signal in 2 times cycle is detected p.207
• Supposed causes p.207
• Stop valve is left in closed p.207
• Remote controller display p.207
• Method of malfunction detection p.207
• Standard compressor motor overcurrent lock p.208
• Remote controller display p.209
• Method of malfunction detection p.209
• Malfunction of outdoor unit fan motor p.209
• Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs p.209
• Malfunction of fan motor p.209
• Malfunction decision conditions p.209
• Fan does not run due to foreign matters tangled p.209
• Clearing condition operate for 5 minutes normal p.209
• Applicable models rx y 5 48m p.209
• When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met p.209
• When malfunction is generated 4 times the system shuts down p.209
• When connector detecting fan speed is disconnected p.209
• Troubleshooting p.209
• The harness connector between fan motor and pc board is left in disconnected or faulty connector p.209
• Supposed causes p.209
• Troubleshooting 199 p.210
• Troubleshooting p.210
• Si38 304 troubleshooting by indication on the remote controller p.210
• Note refer check 8 9 and 12 to p 5 p.210
• Error is generated under no common power supply when the power is on p.211
• Defect of outdoor unit pc board a1p p.211
• Defect of moving part of electronic expansion valve p.211
• Defect of connecting cable p.211
• Check disconnection of connector check continuity of expansion valve coil p.211
• Applicable models rx y 5 48m p.211
• Troubleshooting p.211
• Supposed causes p.211
• Remote controller display p.211
• Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e p.211
• Method of malfunction detection p.211
• Malfunction decision conditions p.211
• Normal p.212
• Continuity approx 300 ω p.212
• Continuity approx 150 ω no continuity p.212
• 1 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 p.212
• Outdoor unit abnormal discharge pipe temperature p.213
• Refrigerant overcharged p.214
• Broken short or disconnection connector of fan motor connection cable p.215
• Applicable models rx y 5 48m p.215
• Abnormal outdoor fan motor signal p.215
• Abnormal fan motor signal circuit malfunction p.215
• Troubleshooting p.215
• Supposed causes p.215
• Remote controller display p.215
• Method of malfunction detection p.215
• Malfunction decision conditions p.215
• In case of detection of abnormal signal at starting fan motor p.215
• Fan inverter pc board malfunction p.215
• Disconnect connector x2a and measure the following resistance p.215
• Detection of abnormal signal from fan motor p.215
• Outdoor unit malfunction of thermistor for outdoor air r1t p.216
• Method of malfunction detection p.216
• Malfunction decision conditions p.216
• Defect of thermistor r1t for outdoor air p.216
• Defect of outdoor unit pc board a1p p.216
• Applicable models rx y 5 48m p.216
• 2 refer to thermistor resistance temperature characteristics table on p321 p.216
• When the outside air temperature sensor has short circuit or open circuit p.216
• Troubleshooting p.216
• The alarm indicator is displayed when the fan only is being used also p.216
• The abnormal detection is based on current detected by current sensor p.216
• Supposed causes p.216
• Remote controller display p.216
• Troubleshooting p.217
• Supposed causes p.217
• Remote controller display p.217
• Method of malfunction detection p.217
• Malfunction is detected according to the current value detected by current sensor p.217
• Malfunction decision conditions p.217
• Faulty outdoor unit pc board p.217
• Faulty current sensor p.217
• Current sensor malfunction p.217
• Applicable models rx y 5 48m p.217
• When the current value detected by current sensor becomes 5a 400 v unit and 3a 200 v unit or lower during std compressor operation and 40a or more during std compressor stop p.217
• When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected p.218
• Troubleshooting p.218
• The alarm indicator is displayed when the fan is being used also p.218
• Supposed causes p.218
• Remote controller display p.218
• Outdoor unit malfunction of discharge pipe thermistor r31 33t p.218
• Note 5 hp class r31t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t p.218
• Method of malfunction detection p.218
• Malfunction is detected from the temperature detected by discharge pipe temperature thermistor p.218
• Malfunction decision conditions p.218
• Defect of thermistor r31t r32t or r33t for outdoor unit discharge pipe p.218
• Defect of outdoor unit pc board a1p p.218
• Applicable models rx y 5 48m p.218
• Applicable models rx y 5 48m p.219
• 2 refer to thermistor resistance temperature characteristics table on p321 p.219
• When a short circuit or an open circuit in the suction pipe temperature thermistor is detected p.219
• Troubleshooting p.219
• Supposed causes p.219
• Remote controller display p.219
• Outdoor unit malfunction of thermistor r2t for suction pipe p.219
• Method of malfunction detection p.219
• Malfunction is detected from the temperature detected by the suction pipe temperature thermistor p.219
• Malfunction decision conditions p.219
• Defect of thermistor r2t for outdoor unit suction pipe p.219
• Defect of outdoor unit pc board a1p p.219
• Malfunction is detected from the temperature detected by the heat exchanger thermistor p.220
• Malfunction decision conditions p.220
• Defect of thermistor r4t for outdoor unit coil p.220
• Defect of outdoor unit pc board a1p p.220
• Applicable models rx y 5 48m p.220
• 2 refer to thermistor resistance temperature characteristics table on p321 p.220
• When a short circuit or an open circuit in the heat exchange thermistor is detected p.220
• Troubleshooting p.220
• Supposed causes p.220
• Remote controller display p.220
• Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger p.220
• Method of malfunction detection p.220
• Supposed causes p.221
• Remote controller display p.221
• Method of malfunction detection p.221
• Malfunction of receiver gas pipe thermistor r5t p.221
• Malfunction is detected according to the temperature detected by receiver gas pipe thermistor subcooling heat exchanger gas pipe thermistor p.221
• Malfunction decision conditions p.221
• Faulty receiver gas pipe thermistor r5t p.221
• Faulty outdoor unit pc board p.221
• Applicable models rx y 5 48m p.221
• 2 refer to thermistor resistance temperature characteristics table on p321 p.221
• When the receiver gas pipe thermistor is short circuited or open p.221
• Troubleshooting p.221
• When the high pressure sensor is short circuit or open circuit p.222
• Troubleshooting p.222
• Supposed causes p.222
• Remote controller display p.222
• Outdoor unit malfunction of high pressure sensor p.222
• Method of malfunction detection p.222
• Malfunction is detected from the pressure detected by the high pressure sensor p.222
• Malfunction decision conditions p.222
• Defect of outdoor unit pc board p.222
• Defect of high pressure sensor system p.222
• Connection of low pressure sensor with wrong connection p.222
• Applicable models rx y 5 48m p.222
• 2 refer to pressure sensor pressure voltage characteristics table on p323 p.222
• 1 voltage measurement point p.222
• Outdoor unit malfunction of low pressure sensor p.223
• When the temperature of the inverter radiation fin increases above 89 c p.224
• Troubleshooting p.224
• Supposed causes p.224
• Remote controller display p.224
• Outdoor unit malfunction of inverter radiating fin temperature rise p.224
• Method of malfunction detection p.224
• Malfunction decision conditions p.224
• Fin temperature is detected by the thermistor of the radiation fin p.224
• Defect of inverter pc board p.224
• Defect of fin thermistor p.224
• Applicable models rx y 5 48m p.224
• Actuation of fin thermal actuates above 89 c p.224
• 2 refer to thermistor resistance temperature characteristics table on p321 p.224
• Compressor start up malfunction mechanical lock p.225
• Applicable models rx y 5 48m p.225
• When an excessive current flows in the power transistor instantaneous overcurrent also causes activation p.225
• Troubleshooting compressor inspection p.225
• Supposed causes p.225
• Remote controller display p.225
• Outdoor unit inverter compressor abnormal p.225
• Method of malfunction detection p.225
• Malfunction is detected from current flowing in the power transistor p.225
• Malfunction decision conditions p.225
• Higher voltage than actual is displayed when the inverter output voltage is checked by tester p.225
• Defect of inverter pc board p.225
• Defect of compressor coil disconnected defective insulation p.225
• Malfunction decision conditions p.226
• Defect of inverter pc board p.226
• Compressor overload p.226
• Compressor coil disconnected p.226
• Applicable models rx y 5 48m p.226
• When overload in the compressor is detected p.226
• Troubleshooting output current check p.226
• Supposed causes p.226
• Remote controller display p.226
• Outdoor unit inverter current abnormal p.226
• Method of malfunction detection p.226
• Malfunction is detected by current flowing in the power transistor p.226
• Remote controller display p.227
• Pressure differential start p.227
• Outdoor unit inverter start up error p.227
• Method of malfunction detection p.227
• Malfunction is detected from current flowing in the power transistor p.227
• Malfunction decision conditions p.227
• Defect of inverter pc board p.227
• Defect of compressor p.227
• Applicable models rx y 5 48m p.227
• When overload in the compressor is detected during startup p.227
• Troubleshooting p.227
• Supposed causes p.227
• Outdoor unit malfunction of transmission between inverter and control pc board p.228
• Troubleshooting by indication on the remote controller si38 304 p.229
• Troubleshooting p.229
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.229
• Method of malfunction detection p.230
• Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button p.230
• Malfunction decision conditions p.230
• Improper main circuit wiring p.230
• Imbalance in supply voltage is detected in pc board p.230
• Defect of main circuit capacitor p.230
• Defect of k1m p.230
• Defect of inverter pc board p.230
• Applicable models rx y 5 48m p.230
• When the resistance value of thermistor becomes a value equivalent to open or short circuited status p.230
• Voltage imbalance between phases p.230
• Troubleshooting p.230
• Supposed causes p.230
• Remote controller display p.230
• Outdoor unit inverter over ripple protection p.230
• Open phase p.230
• Outdoor unit malfunction of inverter radiating fin temperature rise sensor p.231
• Malfunction is not decided while the unit operation is continued p.232
• Malfunction decision conditions p.232
• Low pressure drop due to refrigerant shortage or electronic expansion valve failure p.232
• Defect of thermistor r2t or r4t p.232
• Defect of pressure sensor p.232
• Defect of outdoor unit pc board a1p p.232
• Applicable models rx y 5 48m p.232
• 1 refer to thermistor resistance temperature characteristics table on p321 2 refer to pressure sensor pressure voltage characteristics table on p323 p.232
• Troubleshooting p.232
• Supposed causes p.232
• Short of gas malfunction is detected by discharge pipe temperature thermistor p.232
• Remote controller display p.232
• Out of gas or refrigerant system clogging incorrect piping p.232
• Microcomputer judge and detect if the system is short of refrigerant p.232
• Method of malfunction detection p.232
• Reverse phase open phase p.233
• Remote controller display p.233
• Power supply reverse phase p.233
• Power supply open phase p.233
• Method of malfunction detection p.233
• Malfunction decision conditions p.233
• Detection is based on the voltage in main circuit capacitor for inverter and supply voltage the phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged p.233
• Defect of outdoor pc board a1p p.233
• Applicable models rx y 5 48m p.233
• Troubleshooting p.233
• Supposed causes p.233
• Power supply insufficient or instantaneous failure p.234
• Troubleshooting by indication on the remote controller si38 304 p.235
• Troubleshooting p.235
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.235
• Check operation not executed p.236
• Malfunction of transmission between indoor units p.237
• Troubleshooting 227 p.238
• Troubleshooting p.238
• Si38 304 troubleshooting by indication on the remote controller p.238
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.238
• Defect of remote controller pc board p.239
• Defect of indoor unit pc board p.239
• Connection of two main remote controllers when using 2 remote controllers p.239
• Applicable models all models of indoor units p.239
• Troubleshooting p.239
• Supposed causes p.239
• Remote controller display p.239
• Normal transmission does not continue for specified period p.239
• Method of malfunction detection p.239
• Malfunction of transmission caused by noise p.239
• Malfunction of transmission between remote controller and indoor unit p.239
• Malfunction of indoor unit remote controller transmission p.239
• Malfunction decision conditions p.239
• 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 p.239
• Malfunction of transmission between outdoor units p.240
• Troubleshooting by indication on the remote controller si38 304 p.241
• Troubleshooting p.241
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.241
• Connection between sub remote controllers p.242
• Applicable models all models of indoor units p.242
• Troubleshooting p.242
• Supposed causes p.242
• Remote controller display p.242
• Normal transmission does not continue for specified period p.242
• Method of malfunction detection p.242
• Malfunction of transmission between master and slave remote controllers p.242
• Malfunction of transmission between main and sub remote controller p.242
• Malfunction decision conditions p.242
• 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 p.242
• Defect of remote controller pc board p.242
• Malfunction of transmission between indoor and outdoor units in the same system p.243
• Troubleshooting 233 p.244
• Troubleshooting p.244
• Si38 304 troubleshooting by indication on the remote controller p.244
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.244
• Applicable models all models of indoor unit rx y 5 48m p.245
• Troubleshooting p.245
• The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit p.245
• Supposed causes p.245
• Setting of outdoor p c board was not conducted after replacing to spare parts p c board p.245
• Remote controller display p.245
• Mismatching of the refrigerant type of indoor and outdoor unit p.245
• Method of malfunction detection p.245
• Malfunction decision conditions p.245
• Excessive number of indoor units p.245
• Excess of connected indoor units p.245
• Defect of outdoor unit pc board a1p p.245
• Address duplication of central remote controller p.246
• Malfunction of transmission between central remote controller and indoor unit p.247
• Troubleshooting p.248
• Si38 304 troubleshooting by indication on the remote controller p.248
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.248
• Troubleshooting 237 p.248
• Troubleshooting p.249
• Supposed causes p.249
• Remote controller display p.249
• Refrigerant system not set incompatible wiring piping p.249
• Note test 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 p.249
• Method of malfunction detection p.249
• Malfunction decision conditions p.249
• Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor p.249
• Failure to execute wiring check operation p.249
• Defect of indoor unit pc board p.249
• Applicable models all models of indoor units rx y 5 48m p.249
• Improper connection of transmission wiring between outdoor unit and outdoor unit outside control adaptor p.250
• Defect of outdoor unit pc board a1p p.250
• Defect of indoor unit pc board p.250
• Applicable models all models of indoor units rx y 5 48m p.250
• Troubleshooting p.250
• Supposed causes p.250
• Remote controller display p.250
• Method of malfunction detection p.250
• Malfunction of system refrigerant system address undefined p.250
• Malfunction decision conditions p.250
• Remote controller display p.251
• Microcomputer checks if transmission between indoor unit and central remote controller is normal p.251
• Method of malfunction detection p.251
• Malfunction of transmission between optional controllers for centralized control and indoor unit p.251
• Malfunction of transmission between central remote controller and indoor unit p.251
• Malfunction decision conditions p.251
• Failure of pc board for central remote controller p.251
• Defect of indoor unit pc board p.251
• Connector for setting master controller is disconnected p.251
• Applicable models all models of indoor units rx y 5 48m p.251
• When transmission is not carried out normally for a certain amount of time p.251
• Troubleshooting op central remote controller p.251
• Troubleshooting p.251
• Supposed causes p.251
• Pc board defect p.252
• Troubleshooting p.253
• Supposed causes p.253
• Remote controller display p.253
• Method of malfunction detection p.253
• Malfunction of transmission between optional controllers for centralized control p.253
• Malfunction decision conditions p.253
• Defect of pc board of optional controllers for centralized control p.253
• Applicable models centralized remote controller p.253
• Improper combination of optional controllers for centralized control p.254
• Troubleshooting p.255
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.255
• Troubleshooting op central remote controller si38 304 p.255
• Address duplication improper setting p.256
• Troubleshooting op schedule timer p.257
• Malfunction of transmission between central remote controller and indoor unit p.257
• Troubleshooting 247 p.258
• Troubleshooting p.258
• Si38 304 troubleshooting op schedule timer p.258
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.258
• Pc board defect p.259
• Supposed causes p.260
• Remote controller display p.260
• Method of malfunction detection p.260
• Malfunction of transmission between optional controllers for centralized control p.260
• Malfunction decision conditions p.260
• Defect of pc board of optional controllers for centralized control p.260
• Applicable models all models of indoor units schedule timer p.260
• Troubleshooting p.260
• Improper combination of optional controllers for centralized control p.261
• Troubleshooting 251 p.262
• Troubleshooting p.262
• Si38 304 troubleshooting op schedule timer p.262
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.262
• Address duplication improper setting p.263
• Troubleshooting op unified on off controller p.264
• Operation lamp blinks p.264
• Troubleshooting op unified on off controller si38 304 p.265
• Troubleshooting p.265
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.265
• Display under host computer integrate control blinks repeats single blink p.266
• Troubleshooting op unified on off controller si38 304 p.267
• Troubleshooting p.267
• Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred p.267
• Troubleshooting 257 p.268
• Si38 304 troubleshooting op unified on off controller p.268
• Under host computer integrated control repeats double blink p.269
• Troubleshooting op unified on off controller si38 304 p.269
• Troubleshooting p.269
• Supposed causes p.269
• Remote controller display p.269
• Method of malfunction detection p.269
• Malfunction decision conditions p.269
• Improper wiring of transmission wiring p.269
• Improper address setting p.269
• Display under host computer integrate control blinks repeats double blink p.269
• Central control address group no is not set for indoor unit p.269
• Applicable models unified on off controller p.269
• Check no 9 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 p.270
• Check no 8 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 p.270
• Troubleshooting 259 p.270
• Si38 304 troubleshooting op unified on off controller p.270
• Check no 12 check on pulse input of position signal of fan inverter pcb 1 disconnect the connector x2a while power supply off and operation off 2 is the voltage between pins no 4 and 5 on x2a approx 15 v after power supply is turned on 3 connect the connector x2a while power supply off and operation off 4 check below conditions when the fan motor is rotated one turn manually under the condition of operation off after power supply is turned on are the pulse approx 0 v and 5 v generated 4 times between no 1 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 2 and 5 on x2a are the pulse approx 0 v and 5 v generated 4 times between no 3 and 5 on x2a p.271
• Part 7 replacement procedure for inv compressor vrv ii rx y 5m to 48m p.272
• Replacement procedure for inv compressor vrv ii rx y 5m 48m p.273
• Replacement procedure p.273
• Wiring diagrams for reference 71 p.274
• Thermistor resistance temperature characteristics 21 8 pressure sensor 23 9 method of replacing the inverter s power transistors and diode modules 24 p.274
• Selection of pipe size joints and header 16 p.274
• Piping installation point 14 p.274
• Piping diagrams 64 p.274
• Part 8 part 8 part 8 part 8 appendix appendix appendix appendix p.274
• Part 8 appendix p.274
• Option list 11 p.274
• List of electrical and functional parts 98 p.274
• Heat pump p.275
• Piping diagrams p.275
• Outdoor unit p.275
• Rxy8m rxy10m rxy12m p.276
• Rxy14m rxy16m p.277
• Cooling only p.278
• Rx8m rx10m rx12m p.279
• Rx14m rx16m p.280
• Φ 19 or less attached piping above φ 25 p.281
• R1t thermistor for suction air temperature r2t thermistor for liquid line temperature r3t thermistor for gas line temperature p.281
• Liquid piping connection port p.281
• Indoor unit p.281
• Heat exchanger gas piping connection port p.281
• Fxc fxf fxk fxyd fxs fxyb fxm fxh fxa fxl fxn p.281
• Flare connection p.281
• Flare connectio p.281
• Electronic expansion valve filter filter p.281
• Wiring diagrams for reference p.282
• Rxy5my1 rxy5myl p.282
• Outdoor unit p.282
• Heat pump p.282
• Rxy8my1 rxy8myl rxy10my1 rxy10myl rxy12my1 rxy12myl p.283
• Rxy14my1 rxy14myl rxy16my1 rxy16myl p.284
• Rxy5mtl p.285
• Rxy8mtl rxy10mtl rxy12mtl p.286
• Rxy14mtl rxy16mtl p.287
• Rx5my1 p.288
• Cooling only p.288
• Rx8my1 rx10my1 rx12my1 p.289
• Rx14my1 rx16my1 p.290
• Rx y 5 8 10 12 14 16my1 rx y 5 8 10 12 14 16myl p.291
• Field wiring p.291
• 50hz 60hz p.291
• Rx y 18 20 22 24 26 28 32my1 rx y 18 20 22 24 26 28 32myl p.292
• Rx y 34 36 38 40 42 44 46 48my1 rx y 34 36 38 40 42 44 46 48myl p.293
• Rxy5 8 10 12 14 16mtl p.294
• Rxy18 20 22 24 26 28 30 32mtl p.295
• Rxy34 36 38 40 42 44 46 48mtl p.296
• Indoor unit p.297
• Fxc 20l 25l 32l 63lve p.297
• Fxc 40l 50l 80l 125lve p.298
• Fxf25l 32l 40l 50l 63l 80l 100l 125lve p.299
• Fxk 25l 32l 40l 63lve p.300
• Fxyd20kave 25kave 32kave 40kave 50kave 63kave p.301
• Fxs 20l 25l 32l 40l 50l 63l 80l 100l 125lve p.302
• Fxyb20k 25k 32k 40k 50k 63k 80k 100k 125kv1 p.303
• Fxm 40l 50l 63l 80l 100l 125lve p.304
• Fxm 200l 250lve p.305
• Fxh 32l 63l 100lve p.306
• Fxa20l 25l 32l 40l 50l 63lve p.307
• Fxl 20l 25l 32l 40l 50l 63lve fxn 20l 25l 32l 40l 50l 63lve p.308
• Rxy5 16my1 p.309
• Outdoor unit p.309
• List of electrical and functional parts p.309
• Rxy5 16myl p.311
• Rxy5 16mtl p.313
• Rx5 16my1 p.315
• List of electrical and functional parts si38 304 p.317
• Indoor unit p.317
• Indoor side p.317
• C off 87 c on p.317
• Appendix p.317
• Si38 304 list of electrical and functional parts p.318
• Appendix 307 p.318
• Appendix p.319
• List of electrical and functional parts si38 304 p.319
• Μ f 400v p.320
• Si38 304 list of electrical and functional parts p.320
• Appendix 309 p.320
• List of electrical and functional parts si38 304 p.321
• Appendix p.321
• Various pc boards p.322
• System configuration p.322
• Si38 304 option list p.322
• Option list of controllers p.322
• Option list p.322
• Operation control system optional accessories p.322
• Note installation box for h adaptor must be procured on site p.322
• Note 1 installation box no is necessary for each adaptor marked h 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 installation box no 8 is necessary for second adaptor p.322
• Appendix 311 p.322
• Appendix p.323
• Option list si38 304 p.323
• Is a registered trade mark of echelon corporation p.323
• Building management system p.323
• Si38 304 option list p.324
• Rxy5 16my1 yl tl e rx5 10my1 e p.324
• Rxy34 48my1 yl tl e rx34 48my1 e p.324
• Rxy18 32my1 yl tl e rx18 32my1 e p.324
• Option lists outdoor unit p.324
• Appendix 313 p.324
• 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 p.325
• The projection part between multi connection piping kits p.325
• 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 p.325
• Piping installation point p.325
• In the case of 2m or more p.325
• In the case of 2m or less p.325
• The example of a wrong pattern p.326
• Selection of pipe size joints and header p.327
• Select the proper refnet header using the following table based on the total capacity index of indoor units installed after the header p.327
• Rxy5my1 rxy8my1 rxy10my1 rxy12my1 rxy14my1 rxy16my1 p.327
• Piping material select the piping material to be used from the next table according to piping size p.327
• How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side ex refnet joint a p.327
• How to select the refnet joint p.327
• How to select the refnet header p.327
• How to select pipe size p.327
• For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table p.327
• Between outdoor unit and uppermost stream refnet joint p.327
• The piping minimum thickness p.328
• Select the wall thickness in accordance with revelant local and national regulations p.328
• Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should not exceed the refrigerant piping size selected by the model with combination units p.328
• Piping between the refnet joints and indoor unit p.328
• Piping between the refnet joints p.328
• Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit connection pipe size of indoor unit p.328
• Rxy18my1 rxy20my1 rxy22my1 rxy24my1 rxy26my1 rxy28my1 rxy30my1 rxy32my1 rxy34my1 rxy36my1 rxy38my1 rxy40my1 rxy42my1 rxy44my1 rxy46my1 rxy48my1 p.329
• Piping material select the piping material to be used from the next table according to piping size p.329
• Main piping between multi connection piping kit and refnet joint select the proper ones based on the following table p.329
• How to select the refnet joint select the refnet joint from the following table when using refnet joints at the first branch counted from the outdoor unit side p.329
• How to select the refnet joint p.329
• How to select pipe size p.329
• For refnet joints other than the first branch select the proper ones based on the total capacity index of the indoor units installed after the first branch using the following table p.329
• Select the proper branch kit model based on the total capacity index of indoor units installed after the header using the following table p.330
• Select the piping kit according to the no of outdoor units p.330
• Piping between the refnet joints and indoor unit p.330
• Piping between the refnet joints p.330
• Piping between the multi connection piping kit p.330
• Pipe size for direct connection to indoor unit must be the same as the connection size of indoor unit connection pipe size of indoor unit p.330
• Outdoor unit multi connection piping kit p.330
• How to select the refnet header p.330
• Branching is impossible between refnet header and indoor unit for systems with a total capacity of 640 and over connect a refnet joint branch p.330
• Select the proper pipe size using the following table based on the total capacity index of outdoor units connected upper stream p.330
• Select the proper pipe size using the following table based on the total capacity index of indoor units connected downstream connection piping size should be larger than main piping size connection piping size should not exceed the refrigerant piping size selected by the model with combination units p.330
• The piping minimum thickness p.331
• Select the wall thickness in accordance with revelant local and national regulations p.331
• Piping between outdoor unit and multi connection piping kit p.331
• Pipe size for direct connection to outdoor unit must be the same as the connection size of outdoor unit p.331
• Thermistor resistance temperature characteristics p.332
• Si38 304 thermistor resistance temperature characteristics p.332
• Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for oil r7t p.332
• Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t p.332
• Appendix 321 p.332
• Thermistor resistance temperature characteristics si38 304 p.333
• Outdoor unit thermistors for discharge pipe r3t p.333
• Appendix p.333
• Pressure sensor p.334
• Before checking disconnect the electric wiring connected to the power transistor and diode module p.335
• Method of replacing the inverter s power transistors and diode modules p.335
• Inverter pc board aip p.335
• Inverter p c board p.335
• Electronic circuit p.335
• Decision according to continuity check by analog tester p.335
• Index index index index p.338
• Drawings flow charts drawings flow charts drawings flow charts drawings flow charts p.342
• Drawings flow charts p.342
• Printed in singapore 08 2003 ak p.346
• L for further improvement specifications or designs are subject to change without prior notice p.346