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Daikin RQYQ16PY1 [52/194] Low pressure protection control
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Detailed Control Functions Si341009
43 Function
2.5.2 Low Pressure Protection Control
This low pressure protection control is used to protect compressors against the transient decrease of low pressure.
[In cooling]
★
In case of multi-outdoor-unit system, the following control is performed in the entire system.
Normal operation
All STD compressors stop
Solenoid valve (hot gas) (Y1S): ON
Restart standby
(3 times per 60 minutes at max.)
Stop due to malfunction
(“E4” displayed)
Pe < 0.34 MPa
(
*1
0.20 MPa)
Pe < 0.15 MPa
(
*1
0.10 MPa)
Pe < 0.25 MPa
(
*1
0.15 MPa)
Pe > 0.39 MPa
Pe > 0.29 MPa
Pe < 0.07 MPa
Pe: Low pressure sensor detection value
for master unit
*1
Value in the thermal storage operation
Low pressure standby
4 times within 60 minutes
Master unit: 52 Hz + OFF + OFF
Slave unit: ALL unit stop
Содержание
- Combination of outdoor units 4 capacity range 2
- Detailed control functions 6 2
- External appearance 2
- Function general 5 2
- Functional parts layout 8 2
- Introduction iv 2
- Model names of indoor outdoor units 2
- Part 1 general information 2
- Part 2 specifications 2
- Part 3 refrigerant circuit 1 2
- Part 4 function 4 2
- R 410a heat pump heat recovery 50hz 2
- Refrigerant circuit 2 2
- Refrigerant flow for each operation mode 1 2
- Specifications 0 2
- Table of contents 2
- Field setting from outdoor unit 0 3
- Part 5 test operation 2 3
- Part 6 troubleshooting 2 3
- Symptom based troubleshooting 4 2 troubleshooting by remote controller 7 3
- Test operation 3 3
- Part 7 appendix 77 4
- Piping diagrams 78 2 wiring diagrams 81 3 accessories 84 4
- Caution in repair 5
- Introduction 5
- Safety cautions 5
- Warning 5
- Caution 6
- Cautions regarding products after repair 6
- Warning 6
- Caution 7
- Inspection after repair 7
- Warning 7
- Caution 8
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 8
- Using icons 8
- Using icons list 8
- Preface 9
- Combination of outdoor units 4 capacity range 10
- External appearance 10
- Model names of indoor outdoor units 10
- Part 1 general information 10
- Connection unit series indoor units 11
- General information 2 11
- Indoor units 11
- Model names of indoor outdoor units 11
- 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
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