Daikin RQYQ22PY1 [150/194] Note 1 check the low pressure value by using pressure gauge in operation 2 compare the actual measurement value by pressure sensor with the value by the pressure gauge 3 com...

Note bev unit is required for fxuq only ma rohs directive models specifications dimensions and other functions are not changed compared with m type 11

Note fxdq has following 2 series as shown below fxdq pbvet nbvet without drain pump for general asia except for eu china and australia fxdq pbve nbve with drain pump it is possible to keep r 22 indoor units from k series and later version field setting to r 22 on the pcb is necessary for details refer to the installation manual of rqyq p it is not possible to combine old r 22 and new r 410a indoor units in one system due to incompatibility of communication rqyq p is not compatible to r 407c indoor units 11

Si341009 model names of indoor outdoor units 11

Air treatment equipment 12

General information 12

Hrv units vam series 12

Hrv units vkm series 12

Model names of indoor outdoor units si341009 12

Note for details refer to engineering data ed71 613 12

Outdoor air processing unit 12

Outdoor units 12

Ve 1 phase 220 240 220v 50 60hz v1 1 phase 220 240v 50hz 12

Y1 3 phase 380 415v 50hz 12

Ceiling mounted cassette compact multi flow type 13

Ceiling mounted cassette corner type 13

Ceiling mounted cassette double flow type 13

Ceiling mounted cassette round flow type 13

Ceiling mounted duct type 13

Ceiling mounted duct type middle and high static pressure 13

Ceiling suspended cassette type 13

Ceiling suspended type 13

Concealed floor standing type 13

External appearance 13

Floor standing type 13

General information 4 13

Indoor units 13

Si341009 external appearance 13

Slim ceiling mounted duct type 13

Wall mounted type 13

10 12hp 14 16hp 18 20 22 24hp 14

28hp 30 32hp 34 36 38 40hp 14

44hp 46 48hp 14

Air treatment equipment 14

External appearance si341009 14

General information 14

Hrv units vam series 14

Hrv units vkm series 14

Outdoor air processing unit 14

Outdoor units 14

Combination of outdoor units 15

1 for multiple connections of 18 hp systems and above the outdoor unit multi connection piping kit separately sold is required 2 total capacity index of connectable indoor units must be 50 130 of the capacity index of the outdoor units 3 when outdoor air processing units fxmq mf and standard indoor units are connected the total connection capacity of the outdoor air processing units fxmq mf must not exceed 30 of the capacity index of the outdoor units 16

Capacity index of the outdoor units 16

Capacity range 16

Capacity range si341009 16

Combination ratio connection capacity 50 130 16

Combination ratio total capacity index of the indoor units 16

General information 16

Note when outdoor air processing units fxmq mf and standard indoor units are connected the total connection capacity of the outdoor air processing units fxmq mf must not exceed 30 of the capacity index of the outdoor units 16

Outdoor unit combinations 16

General information 8 17

Indoor unit connection capacity 17

Si341009 capacity range 17

Outdoor units 0 18

Part 2 specifications 18

Specifications 0 18

Outdoor units 19

Si341009 specifications 19

Specifications 19

Specifications 10 19

Specifications 20

Specifications si341009 20

Si341009 specifications 21

Specifications 12 21

Specifications 22

Specifications si341009 22

Si341009 specifications 23

Specifications 14 23

Specifications 24

Specifications si341009 24

Si341009 specifications 25

Specifications 16 25

Specifications 26

Specifications si341009 26

Si341009 specifications 27

Specifications 18 27

Specifications 28

Specifications si341009 28

Si341009 specifications 29

Specifications 20 29

Functional parts layout 8 30

Part 3 refrigerant circuit 30

Refrigerant circuit 2 30

Refrigerant flow for each operation mode 1 30

Refrigerant circuit 31

Refrigerant circuit 22 31

Rqyq8py1 31

Si341009 refrigerant circuit 31

Refrigerant circuit 32

Refrigerant circuit si341009 32

Refrigerant circuit 24 33

Rqyq10 12py1 33

Si341009 refrigerant circuit 33

Refrigerant circuit 34

Refrigerant circuit si341009 34

Refrigerant circuit 26 35

Rqyq14 16py1 35

Si341009 refrigerant circuit 35

Refrigerant circuit 36

Refrigerant circuit si341009 36

Front view 37

Functional parts layout 37

Refrigerant circuit 28 37

Rqyq8py1 37

Si341009 functional parts layout 37

Front view 38

Functional parts layout si341009 38

Refrigerant circuit 38

Rqyq10 12py1 38

Front view 39

Refrigerant circuit 30 39

Rqyq14 16py1 39

Si341009 functional parts layout 39

Cooling operation 40

Refrigerant circuit 40

Refrigerant flow for each operation mode 40

Refrigerant flow for each operation mode si341009 40

Rqyq8 16py1 40

Cooling oil return heating oil return defrost operation 41

High temperature high pressure gas high temperature high pressure liquid low temperature low pressure 41

Indoor unit 41

Indoor unit operation off cooling indoor unit operation on cooling thermostat off 41

Indoor unit operation on cooling thermostat on 41

Refrigerant circuit 32 41

Si341009 refrigerant flow for each operation mode 41

Heating operation 42

High temperature high pressure gas high temperature high pressure liquid low temperature low pressure 42

Indoor unit 42

Indoor unit operation off heating indoor unit operation on heating thermostat off 42

Indoor unit operation on heating thermostat on 42

Refrigerant circuit 42

Refrigerant flow for each operation mode si341009 42

Detailed control functions 6 43

Function general 5 43

Part 4 function 43

Function general 44

Operation mode 44

Crankcase heater control 45

Detailed control functions 45

Restart standby 45

Standby 45

Stop due to malfunction 45

Stop operation 45

When system is in stop mode 45

2 startup control in heating operation 46

Detailed control functions si341009 46

Function 46

Startup control 46

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 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 start both the master and the slave units simultaneously to position the four way valve 1 startup control in cooling operation 46

List of functions in normal operation 47

Normal operation 47

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 48

Compressor pi control 48

Cooling operation controls compressor capacity to adjust te to achieve target value tes te set value make this setting while in setting mode 2 48

Heating operation controls compressor capacity to adjust tc to achieve target value tcs tc set value make this setting while in setting mode 2 48

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 timing of outdoor unit rotation at the beginning of startup control 48

On multi outdoor unit systems this control is made according to values of the first priority unit which is detected with the pressure sensor 48

Outdoor unit rotation 48

Tc high pressure equivalent saturation temperature c tcs target temperature of tc varies depending on tc setting operating frequency etc 48

Te low pressure equivalent saturation temperature c tes target temperature of te varies depending on te setting operating frequency etc 48

Compressor operations vary with the following steps according to information in 2 compressor pi control 49

Compressor step control 49

Function 40 49

Rqyq10 12py1 49

Rqyq14 16py1 49

Rqyq8py1 49

Si341009 detailed control functions 49

Control at a low outdoor temperature during cooling secure the liquid pressure and circulating rate in the indoor unit through high pressure control with the outdoor fan when the outdoor temperature is low during cooling control the fan with the target tc high pressure equivalent saturation temperature 34 c 50

Electronic expansion valve pi control 50

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 50

Main electronic expansion valve control when the outdoor unit heat exchanger is performed via the evaporator this function is used to exert pi control on the electronic expansion valve y1e so that the evaporator outlet superheated degree sh will become constant 50

Sh tg te sh evaporator outlet superheated degree c tg suction pipe temperature c detected by the thermistor r8t te low pressure equivalent saturation temperature c 50

Sh tsh te sh evaporator outlet superheated degree c tsh suction pipe temperature c detected by the subcooling heat exchanger outlet thermistor r5t te low pressure equivalent saturation temperature c 50

Step control of outdoor unit fans 50

Subcooling electronic expansion valve control in order to make the maximum use of the subcooling heat exchanger this function is used to exert pi control on the electronic expansion valve y2e or y3e so that the evaporator side gas pipe superheated degree sh will become constant 50

Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 50

High pressure protection control 51

In case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 51

In case of multi outdoor unit system the following control is performed in the entire system 51

In cooling 51

In heating 51

Protection control 51

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 51

In case of multi outdoor unit system the following control is performed in the entire system 52

In cooling 52

Low pressure protection control 52

This low pressure protection control is used to protect compressors against the transient decrease of low pressure 52

Function 44 53

In case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 53

In heating 53

Si341009 detailed control functions 53

Detailed control functions si341009 54

Discharge pipe protection control 54

Function 54

Inv compressor 54

Normal operation 54

Std compressor in case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 54

Std compressor stops 54

This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature in case of multi outdoor unit system each outdoor unit performs this control individually in the following sequence 54

In the case of multi outdoor unit system each inv compressor performs these controls in the following sequence 55

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 55

Inverter fin temperature control 55

Inverter overcurrent protection control 55

Inverter protection control 55

Times per 60 min 55

Std compressor overload protection 56

This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 56

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 1 oil return operation in cooling start conditions referring to the set conditions for the following items start the oil return operation in cooling 2 hours after initial power on a lapse of every 1 2 hours during low load operation a lapse of every 8 hours during high load operation 57

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 57

Oil return operation 57

Special control 57

2 oil return operation in heating start conditions referring to the set conditions for the following items start the oil return operation in heating 2 hours after initial power on a lapse of every 1 2 hours during low load operation a lapse of every 8 hours during high load operation 58

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 58

Defrost operation 59

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 59

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 a lapse of every 1 hour during high load operation a lapse of every 2 hours during low load operation 59

Outdoor unit rotation 60

Field setting from outdoor unit 0 61

Part 5 test operation 61

Test operation 3 61

Check that the installation work for the indoor and outdoor units has been performed in accordance with the instructions in the installation manual 62

Check work prior to turn power supply on 62

Follow the following procedure to conduct the initial test operation after installation 62

Procedure and outline 62

Test operation 62

B correction with outdoor unit capacity c correction with indoor unit capacity 63

How to calculate additional refrigerant charging amount unit 0 kg 63

2 only with spare pcb 64

Be sure to turn the power on 6 hours before starting operation to protect compressors to power on crankcase heater 64

Check the led display of the outdoor unit pcb 64

Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 64

Dip switch ds1 1 1 4 64

Dip switch ds2 1 2 4 2 64

El comp box lid 64

Main pcb 64

Main pcb a1p 64

Make field settings if needed for the setting procedure refer to information in field setting from outdoor unit on p 60 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 64

Make field settings with outdoor unit pcb 64

Outdoor unit 64

Push button switch bs1 bs5 led lamp h1p h8p 64

The master unit is the outdoor unit to which the transmission wiring for the indoor units is connected the other outdoor units are slave units 64

Turn outdoor unit and indoor unit power on 64

Turn power on 64

Check operation 65

If led h1p is off the mode is setting mode 1 if h1p is blinking or off press the mode bs1 button to change to setting mode 1 in setting mode 1 verify that led h2p is off normal if h2p is on malfunction use the remote control to check the details of the malfunction and correct the trouble the system is checking for indoor unit malfunctions if h2p is blinking preparing wait for a short time until the transmission is completed 65

In the check operation the following checks and judgement will be performed 1 check of the stop valve opening 2 check for wrong wiring 3 recovery of contamination 4 check of the amount of refrigerant 5 automatic judgement of piping length 65

Make sure to carry out the check operation after the initial installation otherwise the malfunction code u3 will be displayed on the remote controller and normal operation cannot be carried out 65

Rqyq p 65

To cancel check operation before it is completed press the return button bs3 65

To cancel check operation before it is completed press the return button bs3 66

Remote controller displays error code 67

Checking in normal operation 68

Field setting from outdoor unit 69

List of field setting items 69

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 1 function setting items 69

2 service setting items 70

1 setting of factory set using dip switches on the pcb enables field setting shown below however make no changes of factory settings except for ds1 1 71

2 setting at replacement by spare pcb 71

Caution 71

Dip switch setting after replacing the main pcb a1p to spare parts pcb after the replacement by the spare pcb be sure to make settings shown below when you replace the main pcb a1p to spare parts pcb please carry out the following setting 71

Initial conditions of dip switches locating switch 71

Make the following settings according to models of outdoor units 71

Setting by dip switches 71

Factory setting 72

H h h h h h h l 72

H h k h h h h h 72

H h k h h h h k 72

Mode changing procedure 1 72

Monitor mode h1p blinks used to check the program made in setting mode 2 72

Setting by push button switches 72

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 72

Setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system 72

The following settings are made by push button switches on pcb in case of multi outdoor unit system various items should be set with the master unit setting with the slave unit is disabled 72

There are the following three setting modes 72

A setting mode 1 73

H h k h h h h 73

Procedure for changing cool heat selection setting 73

Procedure for checking check items 73

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 73

B setting mode 2 74

Bs5 reset 75

The numbers in the no column represent the number of times to press the set bs2 button 75

C monitor mode 78

Cool heat mode switching 80

Multi outdoor units connection 82

Multi outdoor units connection 83

Address setting for 84

Kh hhhhh 84

Kh hhhhk 84

Kh hhhkh 84

Kh hhhkk 84

Kh hhkhh 84

Kh kkkkk 84

Set lower 5 digits with binary number no to no 1 84

Supplementation on and when switching cool heat for each adaptor pcb with the use of more than one adaptor pcb set the address of the external control adaptor for outdoor unit pcb ds1 and ds2 so that it matches the unified cool heat address of outdoor unit main pcb 84

Setting of low noise operation and demand operation 86

A when the demand operation is carried out by external contact with the use of the external control adaptor for outdoor unit 1 connect external control adaptor for outdoor unit and short circuit terminals as required refer above figure 2 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 3 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 87

B when the normal demand operation is carried out use of the external control adaptor for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of alternate 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 87

By connecting the external contact input to the demand input of the outdoor unit external control adaptor for outdoor unit optional the power consumption of unit operation can be saved suppressing the compressor operating condition 87

However the demand operation does not occur in the following operation modes 87

If carrying out demand or low noise input connect the adaptor s terminals as shown below 87

Setting of demand operation 87

Startup control oil return operation defrosting operation pump down residual operation 87

Air tight test procedure 88

Setting of refrigerant recovery mode 88

Setting of vacuuming mode 88

Emergency operation 89

Hhhhhh 89

Hhhhlh 89

Part 6 troubleshooting 91

Symptom based troubleshooting 4 2 troubleshooting by remote controller 7 91

Symptom based troubleshooting 93

On power up the message connection under check please wait for a moment will be displayed on the remote controller screen then that message will disappear and the basic screen will be displayed to access a mode from the basic screen refer to the figure below when any of the operation buttons is pressed the backlight will come on and remains lit for about 30 seconds be sure to press a button while the backlight is on this does not apply to the on off button 96

The following modes can be selected by using the inspection test operation button on the remote control 96

The inspection test button 96

Troubleshooting 96

Troubleshooting by remote controller 96

Troubleshooting by remote controller si341009 96

1 checking a malfunction or warning 97

Explanation the following will be displayed on the screen when a malfunction or a warning occurs during operation check the malfunction code and take the corrective action specified for the particular model 97

Self diagnosis by wired remote controller 97

Remote controller service mode 98

Remote controller self diagnosis function 101

Test run mode 101

1 checking a malfunction or warning 102

2 taking corrective action 102

Press the menu enter button to check the malfunction code 102

Take the corrective action specific to the model 102

Detail description on next page 104

Error code indication by outdoor unit pcb 104

Push the mode bs1 button and returns to setting mode 1 104

Push the return bs3 button and switches to the initial status of monitor mode 104

Push the return bs3 button once to display first digit of error code 104

Push the set bs2 button and set the led display to a setting item 104

Push the set bs2 button once to display error location 104

Push the set bs2 button once to display master or slave 1 or slave 2 or slave 3 and error location 104

Push the set bs2 button once to display second digit of error code 104

Refer to page 69 for monitor mode 104

To enter the monitor mode push the mode bs1 button when in setting mode 1 104

Troubleshooting 104

Troubleshooting by remote controller si341009 104

Si341009 troubleshooting by remote controller 105

Troubleshooting 96 105

Detail description on next page 106

Push the mode bs1 button and returns to setting mode 1 106

Push the return bs3 button and switches to the initial status of monitor mode 106

Push the return bs3 button once to display first digit of error code 106

Push the set bs2 button and set the led display to a setting item 106

Push the set bs2 button once to display error location 106

Push the set bs2 button once to display master or slave 1 or slave 2 or slave 3 and error location 106

Push the set bs2 button once to display second digit of error code 106

Refer to page 69 for monitor mode 106

To enter the monitor mode push the mode bs1 button when in setting mode 1 106

Troubleshooting 106

Troubleshooting by remote controller si341009 106

Si341009 troubleshooting by remote controller 107

Troubleshooting 98 107

Pcb abnormality 108

High pressure abnormality 109

1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge 110

1 mount a pressure gauge on the high pressure service port 2 reset the operation using the remote controller and then restart the operation 110

As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure 2 make measurement of voltage of the pressure sensor 110

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 110

Check 1 110

Check 12 110

Check for the points shown below 1 is the stop valve open 2 is the hps connector properly connected to the outdoor unit main pcb 3 110

Refer to p 70 110

Refer to p 76 110

Troubleshooting 110

Troubleshooting by remote controller si341009 110

Actuation of low pressure sensor 111

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 112

Refer to p 71 112

Refer to p 76 112

Troubleshooting 112

Troubleshooting by remote controller si341009 112

Inverter compressor motor lock 113

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 114

Check 4 114

Refer to p 73 114

Troubleshooting 114

Troubleshooting by remote controller si341009 114

Applicable models rqyp8 48py1 115

Defective compressor 115

Defective current sensor a6p a8p 115

Defective magnetic switch 115

Error decision conditions error is decided when the detected current value exceeds 28 a for 2 seconds 115

Improper power supply voltage 115

Method of error detection detects the overcurrent with current sensor ct 115

Note 1 one of the possible factors may be chattering due to rough mgs contact 2 abnormal case 115

Obstacles at the air outlet 115

Remote controller display 115

Std compressor motor overcurrent lock 115

Stop valve is not opened 115

Supposed causes 115

The current sensor value is 0 during std compressor operation 115

The current sensor value is more than 15 a during std compressor stop 115

Troubleshooting 115

Outdoor unit fan motor abnormality 116

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 117

Si341009 troubleshooting by remote controller 117

Troubleshooting 117

Troubleshooting 108 117

Refer to p 71 118

Refer to p 72 118

Troubleshooting 118

Troubleshooting by remote controller si341009 118

Electronic expansion valve coil abnormality y1e y3e 119

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 120

Troubleshooting 120

Troubleshooting by remote controller si341009 120

Abnormal discharge pipe temperature 121

1 compare the resistance value of discharge pipe thermistor and the value based on the surface thermometer 122

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 122

Refer to p 72 122

Refer to p 74 122

Troubleshooting 122

Troubleshooting by remote controller si341009 122

Refrigerant overcharged 123

Applicable models rqyq8 48py1 124

Broken of high pressure switch harness 124

Broken of lead wire 124

Defective compressor 124

Defective connection of high pressure switch connector 124

Defective high pressure switch 124

Defective outdoor unit pcb 124

Error decision conditions when there is no continuity in the high pressure switch during the compressor stops operating 124

High pressure switch system abnormality 124

Method of error detection the protection device circuit checks continuity in the high pressure switch 124

Remote controller display 124

Supposed causes 124

Troubleshooting 124

Abnormal outdoor fan motor signal 125

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 126

Troubleshooting 126

Troubleshooting by remote controller si341009 126

Applicable models rqyq8 48py1 127

Defective connection of connector 127

Defective outdoor unit pcb control pcb 127

Defective thermistor 127

Error decision conditions when thermistor is disconnected or short circuited during operation 127

H9 j3 j5 j6 j7 j8 j9 127

Method of error detection the error is detected according to the temperature detected by each individual thermistor 127

Remote controller display 127

Supposed causes 127

Thermistor system abnormality 127

Troubleshooting 127

1 pressure sensor subject to error code 128

Applicable models rqyq8 48py1 128

Connection of low pressure sensor with wrong connection 128

Defective connection of high pressure sensor 128

Defective high pressure sensor 128

Defective outdoor unit pcb 128

Electric symbol pressure sensor subject to malfunction code 128

Error code 128

Error decision conditions when the high pressure sensor is short circuit or open circuit not less than 4 2mpa or 0 1mpa or less 128

High pressure sensor abnormality 128

J1 high pressure sensor liquid pipe outlet s2nph 128

Method of error detection error is detected from the pressure measured with high pressure sensor 128

Remote controller display 128

Supposed causes 128

Troubleshooting 128

2 voltage measurement point 129

Refer to p 76 129

Applicable models rqyq8 48py1 130

Current sensor abnormality 130

Defective compressor 130

Defective current sensor a6p a8p 130

Defective outdoor unit pcb 130

Error decision conditions when the current value detected by current sensor becomes 5a or less or 40a or more during std compressor operation 130

Method of error detection error is detected from the current value detected by current sensor 130

Remote controller display 130

Supposed causes 130

Troubleshooting 130

High pressure sensor abnormality 131

1 pressure sensor subject to malfunction code 132

2 voltage measurement point 132

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 132

Malfunction code pressure sensor subject to malfunction code electric symbol ja high pressure sensor s1nph 132

Refer to p 76 132

Troubleshooting 132

Troubleshooting by remote controller si341009 132

Low pressure sensor abnormality 133

1 voltage measurement point 134

Check 12 134

Refer to p 76 134

Troubleshooting 134

Troubleshooting by remote controller si341009 134

Applicable models rqyq8 48py1 135

Current sensor failure 135

Defective of drive circuit 135

Defective outdoor unit pcb a1p 135

Detect error by current sensor value during synchronized operation at the time of startup 135

Detect error by current value during waveform output before compressor startup 135

Error decision conditions 135

Inverter pcb abnormality 135

Ipm failure 135

Method of error detection 135

Refer to p 73 135

Remote controller display 135

Supposed causes 135

Troubleshooting 135

When over current is detected at the time of waveform output before operating the compressor 135

When overvoltage occurs in ipm 135

When the current sensor error during synchronized operation 135

Actuation of fin thermal actuates above 87 c 136

Applicable models rqyq8 48py1 136

Defective inverter pcb 136

Defective radiation fin thermistor 136

Error decision conditions when the temperature of the inverter radiation fin increases above 87 c 136

Inverter radiating fin temperature rise 136

Method of error detection radiation of compressor inverter pcb fin temperature is detected by the radiation fin thermistor 136

Remote controller display 136

Supposed causes 136

Troubleshooting 136

Momentary overcurrent of inverter compressor 137

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 138

Refer to p 73 138

Troubleshooting 138

Troubleshooting by remote controller si341009 138

Overcurrent abnormal of inverter compressor 139

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 140

Refer to p 73 140

Troubleshooting 140

Troubleshooting by remote controller si341009 140

Troubleshooting output current check 140

Applicable models rqyq8 48py1 141

Defective compressor 141

Defective inverter pcb 141

Error decision conditions starting the compressor does not complete 141

Inverter compressor starting abnormality 141

Large pressure difference before startup the compressor 141

Method of error detection error is detected based on the signal waveform of the compressor 141

Remote controller display 141

Stop valve is not opened 141

Supposed causes 141

Troubleshooting 141

Wiring connection error to the compressor 141

Refer to p 73 142

Troubleshooting 142

Troubleshooting by remote controller si341009 142

Transmission system abnormality between inverter and main pcb 143

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 144

Note 1 disconnect the connector once then reconnect it and check that it is securely connected 144

Troubleshooting 144

Troubleshooting by remote controller si341009 144

Inverter over ripple protection 145

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 146

Note 1 measure voltage at the x1m power supply terminal block 2 measure voltage at terminals r s and t of the diode module inside the inverter pcb while the compressor is running 146

Troubleshooting 146

Troubleshooting by remote controller si341009 146

Applicable models rqyq8 48py1 147

Defective fan motor 147

Defective inverter compressor 147

Defective inverter pcb 147

Defective radiation fin thermistor 147

Error decision conditions when the resistance value of thermistor becomes a value equivalent to open or short circuited status 147

Error is not decided while the unit operation is continued 147

Method of error detection resistance of radiation fin thermistor is detected during the compressor stops 147

Remote controller display 147

Supposed causes 147

Thermistor or related abnormality 147

Troubleshooting 147

Will be displayed by pressing the inspection button 147

Applicable models rqyq8 48py1 148

Defective or no field setting after replacing main pcb 148

Error decision conditions make judgement according to communication data on whether or not the type of the inv pcb is correct 148

Faulty field setting after replacing main pcb or faulty combination of pcb 148

Method of error detection this error is detected according to communications with the inv pcb 148

Mis matching of type of pcb 148

Remote controller display 148

Supposed causes 148

Troubleshooting 148

Refrigerant shortage 149

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 150

Check 2 150

Check 3 150

Note 1 check the low pressure value by using pressure gauge in operation 2 compare the actual measurement value by pressure sensor with the value by the pressure gauge 3 compare the thermistor resistance value with the value on the surface thermometer 150

Refer to p 71 150

Refer to p 72 150

Troubleshooting 150

Troubleshooting by remote controller si341009 150

Reverse phase open phase 151

Power supply insufficient or instantaneous failure 152

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 153

Si341009 troubleshooting by remote controller 153

Troubleshooting 153

Troubleshooting 144 153

Check 4 154

Refer to p 73 154

Troubleshooting 154

Troubleshooting by remote controller si341009 154

Check operation is not executed 155

Transmission error between indoor and outdoor units 156

Si341009 troubleshooting by remote controller 157

Troubleshooting 157

Troubleshooting 148 157

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 158

Troubleshooting 158

Troubleshooting by remote controller si341009 158

Applicable models all indoor unit models 159

Connection of two main remote controllers when using 2 remote controllers 159

Defective indoor unit pcb 159

Defective remote controller pcb 159

Error decision conditions normal transmission does not continue for specified period 159

Method of error detection micro computer checks if transmission between indoor unit and remote controller is normal 159

Remote controller display 159

Supposed causes 159

Transmission error between indoor unit and remote controller 159

Transmission error between remote controller and indoor unit 159

Transmission error caused by noise 159

Troubleshooting 159

Transmission error across outdoor units 160

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 161

Si341009 troubleshooting by remote controller 161

Troubleshooting 161

Troubleshooting 152 161

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 162

Troubleshooting 162

Troubleshooting by remote controller si341009 162

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 163

Si341009 troubleshooting by remote controller 163

Troubleshooting 163

Troubleshooting 154 163

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 164

Troubleshooting 164

Troubleshooting by remote controller si341009 164

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

Si341009 troubleshooting by remote controller 165

Troubleshooting 165

Troubleshooting 156 165

Applicable models all indoor unit models 166

Connection among sub remote controllers 166

Defective remote controller pcb 166

Error decision conditions normal transmission does not continue for a certain amount of time 166

Indoor unit transmission error between main and sub remote controllers 166

Method of error detection in case of controlling with 2 remote controller check the system using micro computer if signal transmission between indoor unit and remote controller main and sub is normal 166

Remote controller display 166

Supposed causes 166

Transmission error between main and sub remote controller 166

Troubleshooting 166

Transmission error between indoor and outdoor units in the same system 167

Improper combination of indoor and outdoor units indoor units and remote controller 168

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 169

Si341009 troubleshooting by remote controller 169

Troubleshooting 169

Troubleshooting 160 169

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 170

Troubleshooting 170

Troubleshooting by remote controller si341009 170

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 171

Si341009 troubleshooting by remote controller 171

Troubleshooting 171

Troubleshooting 162 171

Address duplication of centralized controller 172

Transmission error between centralized controller and indoor unit 173

Troubleshooting 174

Troubleshooting by remote controller si341009 174

Si341009 troubleshooting by remote controller 175

Troubleshooting 175

Troubleshooting 166 175

Applicable models all models of indoor unit rqyq8 48py1 176

Defective indoor unit pcb 176

Error decision conditions the error is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 176

Failure to execute check operation 176

Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units 176

Method of error detection 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 176

Remote controller display 176

Stop valve is not opened 176

Supposed causes 176

System is not set yet 176

Troubleshooting 176

System error refrigerant system address undefined 177

Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 178

Note 1 check the correct wiring indoor outdoor and outdoor outdoor by installation manual 178

Troubleshooting 178

Troubleshooting by remote controller si341009 178

What is auto address this is the address automatically assigned to indoor units and outdoor units after initial power supply upon installation or after executing rewiring keep pressing the button for more than 4 seconds 178

Check 1 179

Check for causes of rise in high pressure referring to the fault tree analysis fta shown below probe the faulty points 179

Si341009 troubleshooting by remote controller 179

Troubleshooting 170 179

Check 2 180

Check for causes of drop in low pressure referring to the fault tree analysis fta shown below probe the faulty points 180

Troubleshooting 180

Troubleshooting by remote controller si341009 180

1 refer to low pressure protection control for hot gas bypass control 2 refer to subcooling electronic expansion valve control 3 superheating temperature control in cooling mode is conducted by indoor unit electronic expansion valve 4 superheating temperature control in heating mode is conducted by outdoor unit electronic expansion valve evm 5 judgement criteria of superheat operation 1 suction gas superheating temperature 10 degrees and over 2 discharge gas superheating temperature 45 degrees and over except for immediately after starting and drooping control etc use the above stated values as a guide depending on the other conditions the unit may be normal despite the values within the above scope 181

Bend collapse 181

Check 3 181

Check the factors of overheat operation 5 identify the defective points referring to the failure factor analysis fta as follows 181

Defective control pcb 181

Defective low pressure sensor defective thermistor for suction pipe 181

Defective solenoid valve coil defective solenoid valve body 181

Defective valve body 181

Defective valve body defective low pressure sensor 181

Defective valve coil 181

Faulty hot gas bypass control 181

Four way valve is in the middle position leak from hot gas bypass valve 181

Hot gas circuit clogging 181

Irregular piping length 181

Refrigerant gas shortage 181

Si341009 troubleshooting by remote controller 181

Stop valve is closed 181

Superheat due to defective compressor 181

Superheat due to shaft damage 181

Troubleshooting 172 181

Pcb and circuit diagram 182

Point of measurement and judgement criteria 182

Power transistor check check 4 182

Preparation 182

Troubleshooting 182

Troubleshooting by remote controller si341009 182

Check 11 183

Indoor unit for air suction r1t for liquid pipe r2t for gas pipe r3t 183

Outdoor unit for fin thermistor r1t 183

Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 183

Si341009 troubleshooting by remote controller 183

Thermistor resistance temperature characteristics 183

Troubleshooting 174 183

Outdoor unit thermistors for discharge pipe r3t r3 184

Troubleshooting 184

Troubleshooting by remote controller si341009 184

Pressure sensor check 12 185

Optional accessories 84 186

Part 7 appendix 186

Piping diagrams 78 2 wiring diagrams 81 3 accessories 84 186

Piping diagrams 187

Rqyq8py1 187

Rqyq10py1 rqyq12py1 188

Rqyq14py1 rqyq16py1 189

Rqyq8py1 190

Wiring diagrams 190

Rqyq10py1 rqyq12py1 191

Rqyq14py1 rqyq16py1 192

Accessories 193

Optional accessories 193

Ask a qualified installer or contractor to install this product do not try to install the product yourself improper installation can result in water or refrigerant leakage electrical shock fire or explosion 194

Cautions on product corrosion 194

Daikin industries ltd s products are manufactured for export to numerous countries throughout the world daikin industries ltd does not have control over which products are exported to and used in a particular country prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used this statement does not purport to exclude restrict or modify the application of any local legislation 194

Http www daikin com global_ac 194

If you have any enquiries please contact your local importer distributor and or retailer 194

Read the user s manual carefully before using this product the user s manual provides important safety instructions and warnings be sure to follow these instructions and warnings 194

Si341009 printed in japan 10 2010 ak 194

Use only those parts and accessories supplied or specified by daikin ask a qualified installer or contractor to install those parts and accessories use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion 194

Daikin RQYQ22PY1 [150/194] Note 1 check the low pressure value by using pressure gauge in operation 2 compare the actual measurement value by pressure sensor with the value by the pressure gauge 3 com...

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