Daikin RXYQ10MY1K [68/310] 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 ar...

Note fxdq has following 2 series as shown below fxdq nve with drain pump fxdq nvet without drain pump for general asia area except for eu china and australia 13

Notes bev unit is required for each indoor unit 13

Outdoor units 13

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

Floor standing type connection unit series 14

General information 3 14

Indoor units 14

Si39 502a external appearance 14

Slim ceiling mounted duct type 14

Wall mounted type 14

Wall mounted type connection unit series 14

Outdoor units 15

Rxyq16m 18m 20m 15

Rxyq24m 26m 28m 30m 15

Rxyq8m 10m 15

Combination of outdoor units 16

Capacity index only for high outdoor temperature use type rxy 17

Capacity range 17

Capacity range si39 502a 17

General information 17

Indoor units 17

Indoor units connection unit series 50hz only 17

My1k e mylk e 17

Outdoor units 17

Part 2 specifications 18

Specifications 18

Outdoor unit s 19

Specifications 19

Specifications si39 502a 19

Si39 502a specifications 20

Specifications 9 20

Specifications 21

Specifications si39 502a 21

Si39 502a specifications 22

Specifications 11 22

Specifications 23

Specifications si39 502a 23

Si39 502a specifications 24

Specifications 13 24

Specifications 25

Specifications si39 502a 25

Si39 502a specifications 26

Specifications 15 26

Ceiling mounted cassette type double flow 27

Indoor units 27

Specifications 27

Specifications si39 502a 27

Ceiling mounted cassette type double flow 28

Si39 502a specifications 28

Specifications 17 28

Ceiling mounted cassette type multi flow 29

Specifications 29

Specifications si39 502a 29

Ceiling mounted cassette type multi flow 30

Si39 502a specifications 30

Specifications 19 30

Ceiling mounted cassette corner type 31

Specifications 31

Specifications si39 502a 31

Si39 502a specifications 32

Slim ceiling mounted duct type with drain pump 32

Specifications 21 32

Slim ceiling mounted duct type with drain pump 33

Specifications 33

Specifications si39 502a 33

Si39 502a specifications 34

Slim ceiling mounted duct type without drain pump 34

Specifications 23 34

Slim ceiling mounted duct type without drain pump 35

Specifications 35

Specifications si39 502a 35

Ceiling mounted built in type 36

Si39 502a specifications 36

Specifications 25 36

Ceiling mounted built in type 37

Specifications 37

Specifications si39 502a 37

Ceiling mounted built in type 38

Si39 502a specifications 38

Specifications 27 38

Ceiling mounted duct type 39

Specifications 39

Specifications si39 502a 39

Ceiling mounted duct type 40

Si39 502a specifications 40

Specifications 29 40

Ceiling suspended type 41

Specifications 41

Specifications si39 502a 41

Si39 502a specifications 42

Specifications 31 42

Wall mounted type 42

Specifications 43

Specifications si39 502a 43

Wall mounted type 43

Floor standing type 44

Si39 502a specifications 44

Specifications 33 44

Floor standing type 45

Specifications 45

Specifications si39 502a 45

Concealed floor standing type 46

Si39 502a specifications 46

Specifications 35 46

Concealed floor standing type 47

Specifications 47

Specifications si39 502a 47

Bev units 48

Ceiling suspended cassette type 48

Si39 502a specifications 48

Specifications 37 48

Specifications 49

Specifications si39 502a 49

Wall mounted type 49

Bev units 50

Si39 502a specifications 50

Specifications 39 50

Wall mounted type 50

Floor standing type 51

Specifications 51

Specifications si39 502a 51

Floor standing type 52

Si39 502a specifications 52

Specifications 41 52

Part 3 refrigerant circuit 54

Refrigerant circuit 55

Rxyq8m 10m 55

Refirgerant circuit 45 56

Rxyq8m 10m 56

Si39 502a refrigerant circuit 56

Front view 57

Functional parts layout 57

Functional parts layout si39 502a 57

Refirgerant circuit 57

Rxyq8m 10m 57

Refirgerant circuit 47 58

Refrigerant flow for each operation mode 58

Rxyq8m 10m cooling operation 58

Si39 502a refrigerant flow for each operation mode 58

Cooling oil return operation 59

Refirgerant circuit 59

Refrigerant flow for each operation mode si39 502a 59

Heating oil return defrost operation 60

Refirgerant circuit 49 60

Si39 502a refrigerant flow for each operation mode 60

Heating operation 61

Refirgerant circuit 61

Refrigerant flow for each operation mode si39 502a 61

Basic control 4 62

Function general 2 62

Other control 4 62

Outline of control indoor unit 8 62

Part 4 function 62

Part 4 part 4 part 4 part 4 function function function function 62

Protection control 9 62

Special control 0 62

Function general 63

Symbol 63

Function 53 64

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 64

Indoor unit stop or thermostat off 64

Indoor unit thermostat on 64

Malfunction standby 64

Operation mode 64

Pump down residual operation 64

Si39 502a function general 64

Basic control 65

List of functions in normal operation 65

Normal operation 65

Compressor pi control 66

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 66

Cooling operation 66

Heating operation 66

Basic control si39 502a 67

Compressor step control 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 67

Each compressor operates in the following order of priority in the case of multi outdoor unit system each compressor operates in any of pattern 1 through pattern 3 according to the rotation of outdoor units 67

Function 67

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 67

Inv inverter compressor std1 standard compressor 1 67

Inv std1 67

No 1 no 2 67

No 1 no 3 67

No 1 no 4 67

No 2 no 4 67

No 2 no 5 67

No 2 no 5 no 1 no 4 no 3 no 6 67

No 3 no 6 67

No 3 no 6 no 2 no 5 67

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 67

Operating priority and rotation of compressors 67

Pattern 1 pattern 2 pattern 3 67

Rxyq16m 18m 20m 67

Rxyq24m 26m 28m 30m 67

Rxyq8m 10m 67

Function 57 68

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 68

Rxyq16m 18m 20m 68

Rxyq24m 26m 28m 30m 68

Si39 502a basic control 68

Electronic expansion valve pi control 69

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 69

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 69

Step control of outdoor unit fans 69

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 69

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 69

Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 69

For fan revolutions in each step refer to information on page 58 70

Outdoor unit fan control in cooling operation 70

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 70

Special control 71

Startup control 71

Startup control in cooling operation 71

Startup control in heating operation 71

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 71

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 72

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 72

Oil return operation 72

Oil return operation in cooling operation 72

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 72

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 73

Oil return operation in heating operation 73

Defrosting operation 74

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 74

To defrost the outdoor unit heat exchanger while in heating operation 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 heat exchanger is computed from tc te and compressor loads 74

If the liquid refrigerant stays in the heat exchanger 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 heat exchanger while the compressor stops the pump down residual operation is conducted 75

Pump down residual operation 75

Pump down residual operation in cooling operation 75

Pump down residual operation in heating operation 75

Crankcase heater control 76

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 76

Restart standby 76

Standby 76

Used to forcedly stop the compressor for a period of five minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 76

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 77

Stop due to malfunction 77

Stopping operation 77

This mode is used to define actuator operations when the system stops 77

When system is in stop mode 77

In heating operation the system operates with following mode 78

Mode a operating unit collects refrigerant 78

Mode a or b operation 78

Mode b stopping unit storage refrigerant 78

Stopping operation of slave units during master unit is in operation with multi outdoor unit system 78

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 78

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 the system operates in mode a or mode b listed in the table below 78

Pressure equalization prior to startup 79

High pressure protection control 80

In cooling operation 80

In heating operation 80

In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 80

In the case of multi outdoor unit system the entire system performs this control in the following sequence 80

Protection control 80

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 80

In cooling operation 81

In heating operation 81

In the case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 81

In the case of multi outdoor unit system the entire system performs this control in the following sequence 81

Low pressure protection control 81

Master unit 52 hz off off 81

This low pressure protection control is used to protect compressors against the transient decrease of low pressure 81

Discharge pipe protection control 82

Each compressor performs the discharge pipe temperature protection control individually in the following sequence 82

Inv compressor 82

Std compressor 82

This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 82

In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 83

Inv upper limit frequency 1 step 1 min up from current compressor frequency interval 83

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 83

Inverter fin temperature control 83

Inverter overcurrent protection control 83

Inverter protection control 83

Std compressor overload protection 84

This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 84

Other control 85

Outdoor unit rotation 85

Emergency operation 86

In the case of 1 outdoor unit system rxyq8m 10m 86

Restrictions for emergency operation 86

In the case of multi outdoor unit system rxyq16m to 30m 87

777777 88

7777777 7777 88

Blink h1 88

Demand operation 88

Heating operation prohibition 88

Led display 88

Drain pump control 89

Outline of control indoor unit 89

Louver control for preventing ceiling dirt 91

Thermostat sensor in remote controller 92

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 94

Function 83 94

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 94

Si39 502a outline of control indoor unit 94

Thermostat control in dry operation 94

Thermostat control while in normal operation 94

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 94

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 94

While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation 94

Freeze prevention 95

Heater control 96

1 l or ll only on fxfq models 97

List of swing flap operations 97

Swing flaps operate as shown in table below 97

Outdoor unit pc board layout 3 3 field setting 4 98

Part 5 test operation 98

Test operation 8 98

Check work prior to turn power supply on 99

Follow the following procedure to conduct the initial test operation after installation 99

Procedure and outline 99

Test operation 99

Additional charging of refrigerant 100

Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 100

Bring the stop valves to the following conditions respectively 100

Check the led display of the outdoor unit pc board 100

Check the power supply 100

Check the stop valves 100

Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 100

Disconnect the refrigerant charge hose and then open the liquid side stop valve 100

Even if no stop operation is conducted the equipment will automatically stop after a lapse of 30 minutes at maximum 100

If a full amount of refrigerant cannot be charged with the outdoor unit off charge the refrigerant by the deficient amount according to the following procedure 100

Is the power supplied to the outdoor unit and the indoor unit 100

Liquid side stop valve closed gas side stop valve open 100

Make field settings if needed for the setting procedure refer to information in 3 field settings from outdoor unit on page onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 100

Make field settings with outdoor unit pc board 100

Operation after stop 100

Press the check button bs3 after charging the specified amount of refrigerant 100

Set the system to refrigerant additional charging operation while in setting mode 2 100

Stopping equipment 100

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 100

The system will automatically start operation the h2p blinks during operation and test operaion and under centralized control are displayed on the remote controller 100

Turn outdoor unit and indoor unit power on 100

Turn power on 100

Check operation 101

During check operation mount front panel to avoid the misjudging check operation is mandatory for normal unit operation when the check operation is not executed alarm code u3 will be displayed 101

If the check operation is started within approximately 12 minutes after turning on the power supply to the indoor and outdoor units h2p will turn on and the compressor will not operate referring to information in table in 1 turn power on on the previous page check to be sure the led displays are normal and then operate the compressor for the outdoor multi system an outdoor unit to which the indoor unit connecting wires are connected serves as the master unit be sure to make settings with pushbutton switches on the master unit in order to ensure even refrigerant conditions there may be cases where a maximum of approximately 10 minutes are required for the compressor to start up which however is not a malfunction no malfunctions can be checked on individual indoor unit after the completion of this check operation check the individual indoor unit for any malfunctions while in normal operation mode using the remote controller while in check operation mode the indoor units as well as the ou 101

Conduct normal unit operation after the check operation has been completed when outdoor air temperature is 24 c or higher the unit can not be operated with heating mode see the instruction manual attached confirm that the indoor outdoor units can be operated normally when an abnormal noise due to liquid compression by the compressor can be heard stop the unit immediately and turn on the crankcase heater to heat up it sufficiently then start operation again operate indoor unit one by one to check that the corresponding outdoor unit operates confirm that the indoor unit discharges cold air or warm air operate the air direction control button and flow rate control button to check the function of the devices 102

Confirmation on normal operation 102

For a period of approximately 5 minutes after the compressor stops even if the on off button for the indoor units in the same refrigerant system is pressed the compressor will not operate after stopping the compressor operation using the remote controller the outdoor unit may conduct the residual operation for a period of 5 minutes at maximum if the system is set to nighttime automatic low noise operation setting or external low noise level setting the outdoor unit fan may operate at a low speed which however is not a malfunction when the check operation is not conducted using the test operation button at the first test operation after installation the malfunction code u3 will be displayed be sure to conduct the check operation according to 1 check operation for details refer to information on the previous page 102

Malfunction code in case of an alarm code displayed on remote controller 102

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 103

Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter pc board a2p and control transformer t1r t2r in switch box together 103

Operation when power is turned on 103

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 103

The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 103

When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 103

When turning on power first time 103

When turning on power the second time and subsequent 103

1 service monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 104

2 set mode display led leds display mode according to the setting 104

3 mode setting switch used to change mode 104

4 local setting switch used to make local settings 104

Outdoor unit pc board 104

Outdoor unit pc board layout 104

Field setting 105

Field setting from remote controller 105

Wireless remote controller indoor unit 106

Simplified remote controller 107

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 108

Setting contents and code no vrv indoor unit 108

Si39 502a field setting 108

Test operation 97 108

1 static pressure selection 109

Applicable range of field setting 109

Field setting si39 502a 109

Test operation 109

Auto restart after power failure reset 110

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 110

Detailed explanation of setting modes 110

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 110

Filter sign setting 110

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 110

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 110

If switching the filter sign on time set as given in the table below set time 110

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 110

Setting table 110

Ultra long life filter sign setting when a ultra long life filter is installed the filter sign timer setting must be changed 110

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 111

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 01 111

In the case of fxaq fxhq 111

In the case of fxfq100 125 111

In the case of fxfq25 80 111

In the case of fxuq71 125 111

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 111

Setting table 111

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 112

Setting of air flow direction adjustment range make the following air flow direction setting according to the respective purpose 112

Setting of the static pressure selection for fxdq model 112

Setting table 112

Centralized control group no setting 113

Brc7c type 114

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 114

Group no setting by wireless remote controller for centralized control brc7e type brc4c type 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 114

Group no setting example 114

Si39 502a field setting 114

Test operation 103 114

Contents of control modes 115

Setting of operation control mode from remote controller local setting 115

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 116

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 116

Field setting from outdoor unit 117

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 118 onward 117

For setting items of 1 refer to detailed information provided on page 118 onward 118

Caution 119

Dip switch detail 119

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 119

If the ds1 1 4 ds2 1 4 setting has not been carried out error code ua is displayed and unit can not be operated 119

Initial conditions of dip switches 119

Make the following settings according to models of outdoor units all models are set to off at factory 119

Refer ds1 1 4 ds2 1 4 setting detail on next page 119

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 1 119

Detail of ds1 1 4 ds2 1 4 setting 120

7 7 7 7 7 7 7 121

7 7 7 7 7 7 9 121

7 8 7 7 7 7 7 121

7 8 7 7 7 7 8 121

Factory setting 121

Field setting si39 502a 121

Mode changing procedure 1 121

Mode changing procedure 2 121

Monitor mode h1p blinks used to check the program made in setting mode 2 121

Setting by pushbutton switches the following settings are made by pushbutton switches on pc board in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled the master unit and slave unit can be discriminated with the led display as shown below 121

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 121

Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 121

Test operation 121

There are the following three setting modes 121

7 8 7 7 7 7 122

A setting mode 1 122

Procedure for changing cool heat selection setting 122

Si39 502a field setting 122

Test operation 111 122

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 122

B setting mode 2 123

7 7 7 7 7 127

7 7 7 7 8 127

7 7 7 7 9 127

7 7 7 8 7 127

7 7 7 8 8 127

7 7 7 9 7 127

7 7 8 7 7 127

7 7 8 7 8 127

7 7 8 8 7 127

7 7 8 8 8 127

7 7 9 7 7 127

7 8 7 7 7 127

7 8 7 7 8 127

7 8 7 8 7 127

7 8 7 8 8 127

7 8 8 7 7 127

7 8 8 7 8 127

7 8 8 8 7 127

7 8 8 8 8 127

8 7 7 7 7 127

8 7 8 7 7 127

8 7 8 7 8 127

8 7 8 8 7 127

C monitor mode 127

Defrost select setting short 127

Emg operation backup operation setting 127

Field setting si39 502a 127

Setting item 0 display contents of various setting 127

Tc setting h 127

Te setting h 127

Test operation 127

The numbers in the no column represent the number of times to press the set bs2 button 127

Cool heat mode switching 129

Multi outdoor units connection 131

Multi outdoor units connection 132

Address setting for 133

Set lower 5 digits with binary number no to no 1 133

Supplementation on and 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 133

Setting of low noise operation and demand operation 134

Image of operation in the case of a 135

Image of operation in the case of a and b 135

Image of operation in the case of b 135

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 136

B when the continuous 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 136

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 136

Field setting si39 502a 137

Image of operation in the case of a 137

Image of operation in the case of a and b 137

Image of operation in the case of b 137

Test operation 137

Additional refrigerant charge total flow 140

Setting of refrigerant additional charging operation 140

Si39 502a field setting 140

Test operation 129 140

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 140

Setting of refrigerant recovery mode 141

Check operation 142

Check operation function 142

In order to perform vacuuming operation at site fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves 142

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 pc board is normal 142

Operating procedure 142

Power transistor check operation 142

Press mode button bs1 once and reset setting mode 2 142

Setting of vacuuming mode 142

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 142

Use the vacuum pump to perform vacuuming operation 142

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 142

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 142

Part 6 part 6 part 6 part 6 troubleshooting troubleshooting troubleshooting troubleshooting 144

Part 6 troubleshooting 144

Symptom based troubleshooting 36 2 troubleshooting by remote controller 39 144

Troubleshooting by indication on the remote controller 51 144

Troubleshooting op central remote controller 15 145

Troubleshooting op schedule timer 20 145

Troubleshooting op unified on off controller 27 146

Symptom based troubleshooting 147

Inspection mode 150

Local setting mode service mode 150

Normal mode 150

Test operation mode 150

The following modes can be selected by using the inspection test operation button on the remote control 150

The inspection test button 150

Troubleshooting by remote controller 150

Self diagnosis by wired remote controller 151

Self diagnosis by wireless remote controller 152

The lower digit of the code changes as shown below when the up and down buttons are pressed 153

Operation of the remote controller s inspection test operation button 154

Si39 502a troubleshooting by remote controller 154

Troubleshooting 143 154

Remote controller service mode 155

Remote controller self diagnosis function 157

The system operates for malfunction codes indicated in black squares however be sure to check and repair 159

Malfunction code indication by outdoor unit pc board 160

Monitor mode 160

Si39 502a troubleshooting by remote controller 160

Troubleshooting 149 160

Actuation of external protection device 162

Applicable models all indoor unit models 162

Defect of indoor unit pc board 162

Detect open or short circuit between external input terminals in indoor unit 162

Improper field set 162

Indoor unit error of external protection device 162

Malfunction decision conditions 162

Method of malfunction detection 162

Remote controller display 162

Supposed causes 162

Troubleshooting 162

Troubleshooting by indication on the remote controller 162

When an open circuit occurs between external input terminals with the remote controller set to external on off terminal 162

Indoor unit pc board defect 163

Indoor unit malfunction of drain level control system s1l 164

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 165

Troubleshooting 165

Troubleshooting by indication on the remote controller si39 502a 165

Applicable models all indoor units 166

Detection by failure of signal for detecting number of turns to come from the fan motor 166

Disconnected or faulty wiring between fan motor and pc board 166

Fan motor lock 166

Indoor unit fan motor m1f lock overload 166

Malfunction decision conditions 166

Method of malfunction detection 166

Remote controller display 166

Supposed causes 166

Troubleshooting 166

When number of turns can t be detected even when output voltage to the fan is maximum 166

Indoor unit malfunction of swing flap motor ma 167

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 168

Si39 502a troubleshooting by indication on the remote controller 168

Troubleshooting 168

Troubleshooting 157 168

Applicable models all indoor unit models 169

Defect of connecting cable 169

Defect of indoor unit pc board 169

Indoor unit malfunction of moving part of electronic expansion valve 20e 169

Malfunction decision conditions 169

Malfunction of moving part of electronic expansion valve 169

Method of malfunction detection 169

Remote controller display 169

Supposed causes 169

Troubleshooting 169

Use a microcomputer to check the electronic expansion valve for coil conditions 169

When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 169

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 170

Continuity no continuity 170

Normal 170

Indoor unit drain level above limit 171

Indoor unit malfunction of capacity determination device 172

Applicable models all indoor unit models 173

Defect of indoor unit pc board 173

Defect of thermistor r2t for liquid pipe 173

Indoor unit malfunction of thermistor r2t for heat exchanger 173

Malfunction decision conditions 173

Malfunction detection is carried out by temperature detected by heat exchanger thermistor 173

Method of malfunction detection 173

Refer to thermistor resistance temperature characteristics table on p277 173

Remote controller display 173

Supposed causes 173

Troubleshooting 173

When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 173

Applicable models all indoor unit models 174

Defect of indoor unit pc board 174

Defect of indoor unit thermistor r3t for gas pipe 174

Indoor unit malfunction of thermistor r3t for gas pipes 174

Malfunction decision conditions 174

Malfunction detection is carried out by temperature detected by gas pipe thermistor 174

Method of malfunction detection 174

Refer to thermistor resistance temperature characteristics table on p277 174

Remote controller display 174

Supposed causes 174

Troubleshooting 174

When the gas pipe thermistor becomes disconnected or shorted while the unit is running 174

Applicable models aii indoor unit models 175

Defect of indoor unit pc board 175

Defect of indoor unit thermistor r1t for air inlet 175

Indoor unit malfunction of thermistor r1t for suction air 175

Malfunction decision conditions 175

Malfunction detection is carried out by temperature detected by suction air temperature thermistor 175

Method of malfunction detection 175

Refer to thermistor resistance temperature characteristics table on p277 175

Remote controller display 175

Supposed causes 175

Troubleshooting 175

When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 175

Indoor unit malfunction of thermostat sensor in remote controller 176

Outdoor unit pc board defect 177

Outdoor unit actuation of high pressure switch 178

1 voltage measurement point 179

2 refer to pressure sensor pressure voltage characteristics table on p279 179

Abnormal drop of low pressure lower than 0 7mpa 179

Abnormality is detected by the pressure value with the low pressure sensor 179

Applicable models rxyq8 30my1k e ylk e 179

Defect of low pressure sensor 179

Defect of outdoor unit pc board 179

Error is generated when the low pressure is dropped under specific pressure 179

Malfunction decision conditions 179

Method of malfunction detection 179

Outdoor unit actuation of low pressure sensor 179

Remote controller display 179

Stop valve is not opened 179

Supposed causes 179

Troubleshooting 179

Applicable models rxyq8 30my1k e ylk e 180

Compressor lock 180

Faulty inverter pc board 180

High differential pressure 0 mpa or more 180

Incorrect uvwn wiring 180

Inverter pc board takes the position signal from uvwn line connected between the inverter and compressor and detects the position signal pattern 180

Malfunction decision conditions 180

Method of malfunction detection 180

Outdoor unit compressor motor lock 180

Remote controller display 180

Stop valve is left in closed 180

Supposed causes 180

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 180

Troubleshooting 180

Outdoor unit std compressor motor overcurrent lock 181

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 182

Note abnormal case 182

Si39 502a troubleshooting by indication on the remote controller 182

The current sensor value is 0 during std compressor operation 182

The current sensor value is more than 15 a during std compressor operation 182

Troubleshooting 182

Troubleshooting 171 182

Applicable models rxyq8 30my1k e ylk e 183

Clearing condition operate for 5 minutes normal 183

Fan does not run due to foreign matters tangled 183

Malfunction decision conditions 183

Malfunction of fan motor 183

Malfunction of fan motor system is detected according to the fan speed detected by hall ic when the fan motor runs 183

Method of malfunction detection 183

Outdoor unit malfunction of outdoor unit fan motor 183

Remote controller display 183

Supposed causes 183

The harness connector between fan motor and pc board is left in disconnected or faulty connector 183

Troubleshooting 183

When connector detecting fan speed is disconnected 183

When malfunction is generated 4 times the system shuts down 183

When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met 183

Note refer check 1 2 and 3 to p 3 184

Si39 502a troubleshooting by indication on the remote controller 184

Troubleshooting 184

Troubleshooting 173 184

Applicable models rxyq8 30my1k e ylk e 185

Check disconnection of connector check continuity of expansion valve coil 185

Defect of connecting cable 185

Defect of moving part of electronic expansion valve 185

Defect of outdoor unit pc board a1p 185

Error is generated under no common power supply when the power is on 185

Malfunction decision conditions 185

Method of malfunction detection 185

Outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 185

Remote controller display 185

Supposed causes 185

Troubleshooting 185

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 186

Continuity no continuity 186

Normal 186

Outdoor unit abnormal discharge pipe temperature 187

Outdoor unit refrigerant overcharged 188

Abnormal fan motor signal circuit malfunction 189

Applicable models rxyq8 30my1k e ylk e 189

Broken short or disconnection connector of fan motor connection cable 189

Detection of abnormal signal from fan motor 189

Disconnect connector x2a and measure the following resistance 189

Fan inverter pc board malfunction 189

In case of detection of abnormal signal at starting fan motor 189

Malfunction decision conditions 189

Method of malfunction detection 189

Outdoor unit abnormal outdoor fan motor signal 189

Remote controller display 189

Supposed causes 189

Troubleshooting 189

Applicable models rxyq8 30my1k e ylk e 190

Defect of outdoor unit pc board a1p 190

Defect of thermistor r1t for outdoor air 190

Malfunction decision conditions 190

Method of malfunction detection 190

Outdoor unit malfunction of thermistor r1t for outdoor air 190

Refer to thermistor resistance temperature characteristics table on p277 190

Remote controller display 190

Supposed causes 190

The abnormal detection is based on current detected by current sensor 190

The alarm indicator is displayed when the fan only is being used also 190

Troubleshooting 190

When the outside air temperature sensor has short circuit or open circuit 190

Applicable models rxyq8 30my1k e ylk e 191

Faulty current sensor 191

Faulty outdoor unit pc board 191

Malfunction decision conditions 191

Malfunction is detected according to the current value detected by current sensor 191

Method of malfunction detection 191

Outdoor unit current sensor malfunction 191

Remote controller display 191

Supposed causes 191

Troubleshooting 191

When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 191

Applicable models rxyq8 30my1k e ylk e 192

Defect of outdoor unit pc board a1p 192

Defect of thermistor r31t or r32t for outdoor unit discharge pipe 192

Malfunction decision conditions 192

Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 192

Method of malfunction detection 192

Outdoor unit malfunction of discharge pipe thermistor r3 r31 or 32t 192

Refer to thermistor resistance temperature characteristics table on p278 192

Remote controller display 192

Supposed causes 192

The alarm indicator is displayed when the fan is being used also 192

Troubleshooting 192

When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 192

Applicable models rxyq8 30my1k e ylk e 193

Defect of outdoor unit pc board a1p 193

Defect of thermistor r2t for outdoor unit suction pipe 193

Malfunction decision conditions 193

Malfunction is detected from the temperature detected by the suction pipe temperature thermistor 193

Method of malfunction detection 193

Outdoor unit malfunction of thermistor r2t for suction pipe 193

Refer to thermistor resistance temperature characteristics table on p277 193

Remote controller display 193

Supposed causes 193

Troubleshooting 193

When a short circuit or an open circuit in the suction pipe temperature thermistor is detected 193

Applicable models rxyq8 30my1k e ylk e 194

Defect of outdoor unit pc board a1p 194

Defect of thermistor r4t for outdoor unit coil 194

Malfunction decision conditions 194

Malfunction is detected from the temperature detected by the heat exchanger thermistor 194

Method of malfunction detection 194

Outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger deicer 194

Refer to thermistor resistance temperature characteristics table on p277 194

Remote controller display 194

Supposed causes 194

Troubleshooting 194

When a short circuit or an open circuit in the heat exchange thermistor is detected 194

Applicable models rxyq8 30my1k e ylk e 195

Faulty outdoor unit pc board 195

Faulty receiver outlet liquid pipe thermistor r6t 195

Malfunction decision conditions 195

Malfunction is detected according to the temperature detected by receiver outlet liquid pipe thermistor 195

Method of malfunction detection 195

Outdoor unit malfunction of receiver outlet liquid pipe thermistor r6t 195

Refer to thermistor resistance temperature characteristics table on p277 195

Remote controller display 195

Supposed causes 195

Troubleshooting 195

When the receiver outlet liquid pipe thermistor is short circuited or open 195

Applicable models rxyq8 30my1k e ylk e 196

Faulty outdoor unit pc board 196

Faulty subcooling heat exchanger gas pipe thermistor r5t 196

Malfunction decision conditions 196

Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 196

Method of malfunction detection 196

Outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 196

Refer to thermistor resistance temperature characteristics table on p277 196

Remote controller display 196

Supposed causes 196

Troubleshooting 196

When the subcooling heat exchanger gas pipe thermistor is short circuited or open 196

1 voltage measurement point 197

2 refer to pressure sensor pressure voltage characteristics table on p279 197

Applicable models rxyq8 30my1k e ylk e 197

Connection of low pressure sensor with wrong connection 197

Defect of high pressure sensor system 197

Defect of outdoor unit pc board 197

Malfunction decision conditions 197

Malfunction is detected from the pressure detected by the high pressure sensor 197

Method of malfunction detection 197

Outdoor unit malfunction of high pressure sensor 197

Remote controller display 197

Supposed causes 197

Troubleshooting 197

When the discharge pipe pressure sensor is short circuit or open circuit 197

Outdoor unit malfunction of low pressure sensor 198

Actuation of fin thermal actuates above 98 c 199

Applicable models rxyq8 30my1k e ylk e 199

Defect of fin thermistor 199

Defect of inverter pc board 199

Fin temperature is detected by the thermistor of the radiation fin 199

Malfunction decision conditions 199

Method of malfunction detection 199

Outdoor unit malfunction of inverter radiating fin temperature rise 199

Refer to thermistor resistance temperature characteristics table on p277 199

Remote controller display 199

Supposed causes 199

Troubleshooting 199

When the temperature of the inverter radiation fin increases above 98 c 199

Applicable models rxyq8 30my1k e ylk e 200

Compressor start up malfunction mechanical lock 200

Defect of compressor coil disconnected defective insulation 200

Defect of inverter pc board 200

Higher voltage than actual is displayed when the inverter output voltage is checked by tester 200

Malfunction decision conditions 200

Malfunction is detected from current flowing in the power transistor 200

Method of malfunction detection 200

Outdoor unit inverter compressor abnormal 200

Remote controller display 200

Supposed causes 200

Troubleshooting compressor inspection 200

When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 200

Applicable models rxyq8 30my1k e ylk e 201

Compressor coil disconnected 201

Compressor overload 201

Defect of inverter pc board 201

Malfunction decision conditions 201

Malfunction is detected by current flowing in the power transistor 201

Method of malfunction detection 201

Outdoor unit inverter current abnormal 201

Remote controller display 201

Supposed causes 201

Troubleshooting output current check 201

When overload in the compressor is detected inverter secondary current 15 a 201

Applicable models rxyq8 30my1k e ylk e 202

Defect of compressor 202

Defect of inverter pc board 202

Malfunction decision conditions 202

Malfunction is detected from current flowing in the power transistor 202

Method of malfunction detection 202

Outdoor unit inverter start up error 202

Pressure differential start 202

Remote controller display 202

Supposed causes 202

Troubleshooting 202

When overload in the compressor is detected during startup inverter secondary current 15 a 202

Outdoor unit malfunction of transmission between inverter and control pc board 203

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 204

Si39 502a troubleshooting by indication on the remote controller 204

Troubleshooting 204

Troubleshooting 193 204

Applicable models rxyq8 30my1k e ylk e 205

Defect of inverter pc board 205

Defect of k1m 205

Defect of main circuit capacitor 205

Imbalance in supply voltage is detected in pc board 205

Improper main circuit wiring 205

Malfunction decision conditions 205

Malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button 205

Method of malfunction detection 205

Open phase 205

Outdoor unit inverter over ripple protection 205

Remote controller display 205

Supposed causes 205

Troubleshooting 205

Voltage imbalance between phases 205

When the resistance value of thermistor becomes a value equivalent to open or short circuited status 205

Outdoor unit malfunction of inverter radiating fin temperature rise sensor 206

1 refer to thermistor resistance temperature characteristics table on p277 2 refer to pressure sensor pressure voltage characteristics table on p279 207

Applicable models rxyq8 30my1k e ylk e 207

Defect of outdoor unit pc board a1p 207

Defect of pressure sensor 207

Defect of thermistor r2t or r4t 207

Malfunction decision conditions 207

Malfunction is not decided while the unit operation is continued 207

Method of malfunction detection 207

Microcomputer judge and detect if the system is short of refrigerant 207

Out of gas or refrigerant system clogging incorrect piping 207

Outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 207

Remote controller display 207

Short of gas malfunction is detected by discharge pipe temperature thermistor 207

Supposed causes 207

Troubleshooting 207

Applicable models rxyq8 30my1k e ylk e 208

Defect of outdoor pc board a1p 208

Malfunction decision conditions 208

Method of malfunction detection 208

Phase outdoor unit only 208

Power supply open phase 208

Power supply reverse phase 208

Remote controller display 208

Reverse phase open phase 208

Supposed causes 208

The phase of each phase are detected by reverse phase detection circuit and right phase or reverse phase are judged 208

Troubleshooting 208

When a significant phase difference is made between phases 208

Outdoor unit power supply insufficient or instantaneous failure 209

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 210

Is the voltage of power supply 380 415v 210

K2 magnetic relay in pc board a2p 210

Si39 502a troubleshooting by indication on the remote controller 210

Troubleshooting 210

Troubleshooting 199 210

Outdoor unit check operation not executed 211

Malfunction of transmission between indoor units 212

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 213

Troubleshooting 213

Troubleshooting by indication on the remote controller si39 502a 213

Applicable models all models of indoor units 214

Connection of two main remote controllers when using 2 remote controllers 214

Defect of indoor unit pc board 214

Defect of remote controller pc board 214

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 214

Indoor unit malfunction of transmission between remote controller and indoor unit 214

Malfunction decision conditions 214

Malfunction of indoor unit remote controller transmission 214

Malfunction of transmission caused by noise 214

Method of malfunction detection 214

Normal transmission does not continue for specified period 214

Remote controller display 214

Supposed causes 214

Troubleshooting 214

Indoor unit malfunction of transmission between outdoor units 215

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 216

Si39 502a troubleshooting by indication on the remote controller 216

Troubleshooting 216

Troubleshooting 205 216

Applicable models all models of indoor units 217

Connection between sub remote controllers 217

Defect of remote controller pc board 217

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 217

Indoor unit malfunction of transmission between main and sub remote controllers 217

Malfunction decision conditions 217

Malfunction of transmission between main and sub remote controller 217

Method of malfunction detection 217

Normal transmission does not continue for specified period 217

Remote controller display 217

Supposed causes 217

Troubleshooting 217

Indoor unit malfunction of transmission between indoor and outdoor units in the same system 218

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 219

Troubleshooting 219

Troubleshooting by indication on the remote controller si39 502a 219

A difference occurs in data by the type of refrigerant between indoor and outdoor units the number of indoor units is outside of the allowable range 220

Applicable models all models of indoor unit rxyq8 30my1k e ylk e remote controller 220

Defect of outdoor unit pc board a1p 220

Excess of connected indoor units 220

Improper combination of indoor and outdoor units indoor unit and remote controller 220

Malfunction decision conditions 220

Method of malfunction detection 220

Mismatching of the refrigerant type of indoor and outdoor unit 220

Remote controller display 220

Setting of outdoor pc board was not conducted after replacing to spare parts pc board 220

Supposed causes 220

The malfunction decision is made as soon as either of the abnormalities aforementioned is detected 220

The number of indoor units that can be connected to a single outdoor unit system depends on the type of outdoor unit 220

Troubleshooting 220

Address duplication of centralized controller 221

Malfunction of transmission between centralized controller and indoor unit 222

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 223

Troubleshooting 223

Troubleshooting by indication on the remote controller si39 502a 223

Applicable models all models of indoor units rxyq8 30my1k e ylk e 224

Defect of indoor unit pc board 224

Failure to execute check operation 224

Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 224

Malfunction decision conditions 224

Method of malfunction detection 224

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 224

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 224

Remote controller display 224

Stop valve is left in closed 224

Supposed causes 224

System is not set yet 224

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 224

Troubleshooting 224

Applicable models all models of indoor units rxyq8 30my1k e ylk e 225

Defect of indoor unit pc board 225

Defect of outdoor unit pc board a1p 225

Detect an indoor unit with no address setting 225

Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 225

Malfunction decision conditions 225

Malfunction of system refrigerant system address undefined 225

Method of malfunction detection 225

Remote controller display 225

Supposed causes 225

The malfunction decision is made as soon as the abnormality aforementioned is detected 225

Troubleshooting 225

Pc board defect 226

Troubleshooting op central remote controller 226

Applicable models central remote controller 227

Defect of pc board of optional controllers for centralized control 227

Detect the malfunction according to diii net transmission data the system will be automatically reset 227

Malfunction decision conditions 227

Malfunction of transmission between optional controllers for centralized control 227

Method of malfunction detection 227

Remote controller display 227

Supposed causes 227

Troubleshooting 227

When no master controller is present at the time of the startup of slave controller when the centralized controller which was connected once shows no response 227

Improper combination of optional controllers for centralized control 228

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 229

Troubleshooting 229

Troubleshooting op central remote controller si39 502a 229

Address duplication improper setting 230

Malfunction of transmission between centralized controller and indoor unit 231

Troubleshooting op schedule timer 231

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 232

Si39 502a troubleshooting op schedule timer 232

Troubleshooting 232

Troubleshooting 221 232

Pc board defect 233

Applicable models schedule timer 234

Defect of pc board of optional controllers for centralized control 234

Detect the malfunction according to diii net transmission data the system will be automatically reset 234

Malfunction decision conditions 234

Malfunction of transmission between optional controllers for centralized control 234

Method of malfunction detection 234

Remote controller display 234

Supposed causes 234

Troubleshooting 234

When no master controller is present at the time of the startup of slave controller when the optional controllers for centralized controller which was connected once shows no response 234

Improper combination of optional controllers for centralized control 235

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 236

Si39 502a troubleshooting op schedule timer 236

Troubleshooting 236

Troubleshooting 225 236

Address duplication improper setting 237

Operation lamp blinks 238

Troubleshooting op unified on off controller 238

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 239

Troubleshooting 239

Troubleshooting op unified on off controller si39 502a 239

Display under centralized control blinks repeats single blink 240

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 241

Troubleshooting 241

Troubleshooting op unified on off controller si39 502a 241

Si39 502a troubleshooting op unified on off controller 242

Troubleshooting 231 242

Applicable models unified on off controller 243

Central control address group no is not set for indoor unit 243

Detect the malfunction according to diii net transmission data 243

Display under centralized control blinks repeats double blink 243

Improper control range setting switch 243

Improper wiring of transmission wiring 243

Malfunction decision conditions 243

Method of malfunction detection 243

Remote controller display 243

Supposed causes 243

Troubleshooting 243

Troubleshooting op unified on off controller si39 502a 243

Under centralized control repeats double blink 243

When no central control addresses are set to indoor units when no indoor units are connected within the control range 243

Check no 1 check on pulse input of position signal of fan inverter pc board 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 244

Check no 2 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 245

Check no 3 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 245

Troubleshooting 245

Troubleshooting op unified on off controller si39 502a 245

List of electrical and functional parts 63 246

Option list 69 246

Part 7 appendix 246

Part 7 part 7 part 7 part 7 appendix appendix appendix appendix 246

Piping diagrams 36 246

Piping installation point 72 6 selection of pipe size joints and header 75 7 thermistor resistance temperature characteristics 77 8 pressure sensor 79 9 method of replacing the inverter s power transistors and diode modules 80 246

Wiring diagrams for reference 42 246

Outdoor unit 247

Piping diagrams 247

Rxyq8my1k e ylk e rxyq10my1k e ylk e 247

Electronic expansion valve filter filter 248

Flare connectio 248

Flare connection 248

Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 248

Gas piping connection port 248

Heat exchanger 248

Indoor unit 248

Liquid piping connection port 248

Φ 15 or less attached piping above φ 19 248

Refrigerant pipe connection port diameters 249

Connection unit 250

Fxuq bevq 250

Indoor unit 250

Connection unit 251

Fxaq bevq 251

Indoor unit 251

Connection unit 252

Fxlq bevq 252

Indoor unit 252

Outdoor unit 253

Rxyq8my1k e ylk e rxyq10my1k e ylk e 253

Wiring diagrams for reference 253

Field wiring 254

Rxyq8my1k e ylk e rxyq10my1k e ylk e 254

Rxyq16my1k e ylk e rxyq18my1k e ylk e rxyq20my1k e ylk e 255

Rxyq24my1k e ylk e rxyq26my1k e ylk e rxyq28my1k e ylk e rxyq30my1k e ylk e 256

Fxcq20m 25m 32m 63mve 257

Indoor unit 257

Fxcq40m 50m 80m 125mve 258

Fxfq25m 32m 40m 50m 63m 80m 100m 125mve 259

Fxkq25m 32m 40m 63mve 260

Fxdq20n 25n 32n 40n 50n 63nve with drain pump 261

Fxdq20n 25n 32n 40n 50n 63nvet without drain pump 262

Fxsq20m 25m 32m 40m 50m 63m 80m 100m 125mve 263

Fxmq40m 50m 63m 80m 100m 125mve 264

Fxmq200m 250mve 265

Fxhq32m 63m 100mve 266

Fxaq20m 25m 32m 40m 50m 63mve 267

Fxlq20m 25m 32m 40m 50m 63mve fxnq20m 25m 32m 40m 50m 63mve 268

Fxuq71m 100m 125mv1 269

Fxaq20mh 25mh 32mh 40mh 50mhv1 270

Fxlq20mh 25mh 32mh 40mh 50mhv1 271

Bevq50mve 272

Bevq71m 100m 125mve 273

List of electrical and functional parts 274

Outdoor unit 274

Rxyq8 10my1k e rxyq8 10mylk e 274

Appendix 275

C off 87 c on 275

Indoor side 275

Indoor unit 275

List of electrical and functional parts si39 502a 275

Appendix 265 276

Only for fxdq20 63nve with drain pump type 276

Si39 502a list of electrical and functional parts 276

Appendix 277

List of electrical and functional parts si39 502a 277

Appendix 267 278

K ω 25 c 278

Si39 502a list of electrical and functional parts 278

St8602a 6 φ 6 278

St8605 6 φ 8 278

Μ f 400v 278

Appendix 279

List of electrical and functional parts si39 502a 279

Thermal protector 130 c off 83 c on 279

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 280

Adaptor must be procured on site 280

Appendix 269 280

Note 1 installation box no is necessary for each adaptor marked 280

Note installation box for 280

Operation control system optional accessories 280

Option list 280

Option list of controllers 280

Si39 502a option list 280

System configuration 280

Appendix 281

Building management system 281

Is a registered trade mark of echelon corporation 281

Is a registered trademark of american society of heating refrigerating and air conditioning engineers ashrae 281

Option list si39 502a 281

Please refer to option handbook etc for detail 281

Ppd does not support connection unit series 281

Appendix 271 282

Option lists outdoor unit 282

Rxyq16 30my1k e ylk e 282

Rxyq8 10my1k e ylk e 282

Si39 502a option list 282

Appendix 283

Pattern 1 283

Pattern 2 283

Piping installation point 283

Piping installation point si39 502a 283

Prohibited pattern 283

The outdoor unit multi connection piping kit that is sold separately as an option bhfp22m90 135k is necessary for the multi installation of outdoor units see the installation manual attached to the kit with attention to installation restrictions described in connecting the refrigerant piping when installing 283

To avoid the risk of oil detention in the piping between the outdoor units must be routed level or slightly upward 283

To avoid the risk of oil detention in the stopping unit always connect the shutoff valve and the piping between outdoor units as shown in the figure a or figure b 283

Allowable level difference 284

Appendix 273 284

If 2 m or less 284

If 2 m or more 284

If the piping length between the outdoor unit connecting pipe kits or between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line within a length of 2 m from the kit 284

Indoor unit indoor unit 15m or less 284

Max allowable piping length 284

Multi connection piping kit indoor unit actual piping length 150m or less equivalent length 175m or less the total extension 510m or less 284

Note refer to page 276 note 2 in case of up to 90m 284

Outdoor unit indoor unit 50m or less when an outdoor unit is lower than indoor units 40m or less 284

Outdoor unit multi connection piping kit actual piping length 10m or less equivalent length 13m or less 284

Outdoor unit outdoor unit 5m or less 284

Prohibited pattern 284

Refnet joint indoor unit actual piping length 40 90 m or less 284

Si39 502a piping installation point 284

Example of connection r 410a type rxyq8 30m heat pump 286

Selection of pipe size joints and header 286

Indoor units 1 8 287

Note 1 287

Note 2 287

Outdoor unit refnet joint a g 287

Appendix 277 288

For gas pipe r3t 288

For receiver outlet liquid pipe r6t 288

For suction pipe r4t for receiver gas pipe r5t 288

Indoor unit for air suction r1t for liquid pipe r2t 288

Outdoor unit for fin thermistor r1t 288

Outdoor unit for outdoor air r1t for coil r2t 288

Si39 502a thermistor resistance temperature characteristics 288

Thermistor resistance temperature characteristics 288

Appendix 289

Outdoor unit thermistors for discharge pipe r3t r31t r32t 289

Thermistor resistance temperature characteristics si39 502a 289

Pressure sensor 290

Before checking disconnect the electric wiring connected to the power transistor and diode module 291

Decision according to continuity check by analog tester 291

Electronic circuit 291

Inverter pc board 291

Inverter pc board a2p 291

Method of replacing the inverter s power transistors and diode modules 291

Part 8 precautions for new refrigerant r 410a 294

About refrigerant r 410a 295

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 295

Non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points 295

Outline 295

Precautions for new refrigerant r 410a 295

Quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 295

The design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 295

Precautions for new refrigerant r 410a 285 296

Si39 502a precautions for new refrigerant r 410a 296

Thermodynamic characteristic of r 410a 296

Refrigerant cylinders 297

As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 298

Copper tube material and thickness 298

O soft annealed h hard drawn 298

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 298

Service tools 298

Tool compatibility 298

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 299

Differences 2 change of dimension a 299

Flaring tool 299

Specifications 2 dimension a 299

Unit mm 299

Can not be used 302

Index index index index 304

Drawings flow charts 308

Drawings flow charts drawings flow charts drawings flow charts drawings flow charts 308

R 410a heat pump 50 60hz for high outdoor temperature use 310

R 410a heat pump rxyq8 30my1k e ylk e 310

Rxyq8 30my1k e ylk e 310

Service manual 310

Si39 502a 310

Daikin RXYQ10MY1K [68/310] 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 ar...

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