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ESiEN09-06
Table of Contents iii
3.6 “AF” AHU: Drain Level above Limit ......................................................192
3.7 “AJ” AHU: Malfunction of Capacity Determination Device ...................193
3.8 “C4” AHU: Malfunction of Thermistor (R2T) for Heat Exchanger .........194
3.9 “C5” AHU: Malfunction of Thermistor (R3T) for Gas Pipes ..................195
3.10 “C9” AHU: Malfunction of Thermistor (R1T) for Suction Air .................196
3.11 “CJ” AHU: Malfunction of Thermostat Sensor in Remote Control ........197
3.12 “E1” Outdoor Unit: PC Board Defect ....................................................198
3.13 “E3” Outdoor Unit: Actuation of High Pressure Switch.........................199
3.14 “E4” Outdoor Unit: Actuation of Low Pressure Sensor.........................201
3.15 “E5” Outdoor Unit: Inverter Compressor Motor Lock............................203
3.16 “E6” Outdoor Unit: STD Compressor Motor Overcurrent/Lock.............205
3.17 “E7” Outdoor Unit: Malfunction of Outdoor Unit Fan Motor ..................206
3.18 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion
Valve (Y1E, Y2E) .................................................................................209
3.19 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature .................211
3.20 “F6” Outdoor Unit: Refrigerant Overcharged........................................212
3.21 “H7” Outdoor Unit: Abnormal Outdoor Fan Motor Signal .....................213
3.22 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air....214
3.23 “J2” Outdoor Unit: Current Sensor Malfunction ....................................215
3.24 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor
(R3, R31~33T) .....................................................................................216
3.25 “J5”
Outdoor Unit: Malfunction of Thermistor (R2T), (R7T) for Suction Pipe
217
3.26 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat
Exchanger ............................................................................................218
3.27 “J7” Outdoor Unit: Malfunction of Liquid Pipe Thermistor (R6T) ..........219
3.28 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe
Thermistor (R5T) ..................................................................................220
3.29 “JA” Outdoor Unit: Malfunction of High Pressure Sensor.....................221
3.30 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor .....................222
3.31 “L4”
Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
223
3.32 “L5” Outdoor Unit: Inverter Compressor Abnormal ..............................225
3.33 “L8” Outdoor Unit: Inverter Current Abnormal ......................................227
3.34 “L9” Outdoor Unit: Inverter Start up Error.............................................229
3.35 “LC” Outdoor Unit: Malfunction of Transmission Between Inverter and
Control PC Board .................................................................................231
3.36 “P1” Outdoor Unit: Inverter Over-Ripple Protection..............................234
3.37 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin
Temperature Rise Sensor ....................................................................235
3.38 “PJ” Outdoor Unit: Faulty Field Setting after Replacing Main PC Board or
Faulty Combination of PC Board..........................................................237
3.39 “UO” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................238
3.40 “U1” Reverse Phase, Open Phase.......................................................239
3.41 “U2”
Outdoor Unit: Power Supply Insufficient or Instantaneous Failure
.240
3.42 “U3” Outdoor Unit: Check Operation not Executed ..............................243
3.43 “U4” Malfunction of Transmission Between AHUs ...............................244
3.44 “U5” AHU:
Malfunction of Transmission Between Remote Control and AHU
.246
3.45 “U9” AHU: Malfunction of Transmission Between AHU and
Outdoor Units in the Same System ......................................................247
3.46 “UA” Improper Combination of AHU and Outdoor Units, AHUs and
Remote Control ....................................................................................248
3.47 “UF” System is not Set yet ...................................................................250
3.48 “UH” Malfunction of System, Refrigerant System Address Undefined .251
ESiEN09-06.pdf 3 2/16/2010 4:42:24 PM
Содержание
- Erq condensing unit three phase 1
- Service manual 1
- Erq condensing unit three phase 2
- Service manual 2
- Basic control 4 3
- Combination table 3
- Function general 2 3
- Functional parts layout 8 3
- Introduction v 3
- Model names of outdoor unit control box and expansion valve kit 3
- Other control 1 3
- Part 1 general information 3
- Part 2 specifications 3
- Part 3 refrigerant circuit 1 3
- Part 4 function 1 3
- Protection control 6 3
- Refrigerant circuit 2 3
- Special control 9 3
- Specifications 3
- Attention points 0 5 system a ekeqf ekeqd box installation and operation manual 1 6 system b ekeqm box installation and operation manual 6 4
- Different systems with their control boxes 0 4
- Outdoor unit pc board layout 05 3 field setting 06 4
- Outline of control 4 4
- Part 5 control box ekeq cbv3 9 4
- Part 6 test operation 9 4
- Part 7 installation and operation manual 37 4
- Part 8 troubleshooting 69 4
- Symptom based troubleshooting 71 2 troubleshooting by remote control 74 4
- Test operation 0 4
- Troubleshooting by indication on the remote control 85 4
- Wiring diagram of control box 8 4
- X y z control 5 4
- Drawings flow charts iii 6
- Index i 6
- List of electrical and functional parts 67 6
- Method of checking the inverter s power transistors and diode module 6
- Option list 69 5 thermistor resistance temperature characteristics 70 6 pressure sensor 72 7 6
- Part 10precautions for new refrigerant r 410a 75 6
- Part 9 appendix 59 6
- Piping diagrams 60 6
- Precautions for new refrigerant r 410a 76 6
- Troubleshooting op unified on off controller 53 6
- Wiring diagrams for reference 63 6
- Caution in repair 7
- Introduction 7
- Safety cautions 7
- Warning 7
- Caution 8
- Cautions regarding products after repair 8
- Warning 8
- Caution 9
- Inspection after repair 9
- Warning 9
- Caution 10
- Icons are used to attract the attention of the reader to specific information the meaning of each icon is described in the table below 10
- Using icons 10
- Using icons list 10
- Combination table 11
- Model names of outdoor unit control box and expansion valve kit 11
- Part 1 general information 11
- Model name 12
- Model names of outdoor unit control box and expansion valve kit 12
- Outdoor units 12
- Outlook 12
- Control box 13
- Outlook 13
- Depending on the heat exchanger a connectable ekexv expansion valve kit must be selected to these limitations 14
- Expansion valve kit 14
- Expansion valve kit installation drawing 14
- Limits for outdoor unit expansion valve kit 14
- Model name 14
- Outlook 14
- Saturated suction temperature sst 6 c sh superheat 5 k air temperature 27 c db 19 c wb 14
- Combination table 15
- Heat pump p pair combination depending on ahu heat exchanger volume and capacity 15
- Note if conflicting result occurs capacity selection has priority over volume 15
- Saturated suction temperature sst 6 c sh superheat 5 k air temperature 27 c db 19 c wb 15
- Outdoor units 17
- Part 2 specifications 17
- Specifications 17
- Heat pump 50hz standard series erq 125 200 250 a7w1b 18
- Outdoor units 18
- Specifications 18
- Specifications esien09 06 18
- Esien09 06 specifications 19
- Specifications 9 19
- Functional parts layout 8 21
- Part 3 refrigerant circuit 21
- Refrigerant circuit 2 21
- Erq 125 a7w1b 22
- Refrigerant circuit 22
- Refrigerant circuit esien09 06 22
- Erq 125 a7w1b 23
- Esien09 06 refrigerant circuit 23
- Refrigerant circuit 13 23
- Erq 200 a7w1b 24
- Refrigerant circuit 24
- Refrigerant circuit esien09 06 24
- Erq 200 a7w1b 25
- Esien09 06 refrigerant circuit 25
- Refrigerant circuit 15 25
- Erq 250 a7w1b 26
- Refrigerant circuit 26
- Refrigerant circuit esien09 06 26
- Erq 250 a7w1b 27
- Esien09 06 refrigerant circuit 27
- Refrigerant circuit 17 27
- Erq 125 a7w1b 28
- Front view 28
- Functional parts layout 28
- Functional parts layout esien09 06 28
- Refrigerant circuit 28
- Accumulator 29
- Erq 200 a7w1b 29
- Esien09 06 functional parts layout 29
- Front view 29
- Heat exchanger 29
- High pressure sensor 29
- Pressure switch high pressure protection 29
- Refrigerant circuit 19 29
- Thermistor m1c discharge pipe 29
- Erq 250 a7w1b 30
- Front view 30
- Functional parts layout esien09 06 30
- Refrigerant circuit 30
- Basic control 4 31
- Function general 2 31
- Other control 1 31
- Outline of control 4 31
- Part 4 function 31
- Protection control 6 31
- Special control 9 31
- Function general 32
- Symbol 32
- Esien09 06 function general 33
- Function 23 33
- In the event ahu stops or the thermostat turns off while in oil return operation or defrosting operation pump down residual operation is performed on completion of the oil return operation or defrosting operation 33
- Malfunction standby retry 33
- Operation mode 33
- Basic control 34
- List of functions in normal operation 34
- Normal operation 34
- 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 35
- Compressor pi control 35
- Cooling operation 35
- For x y control 35
- For z control 35
- Heating operation 35
- See chapter field setting 35
- Basic control esien09 06 36
- Compressor step control compressor operations vary with the following steps 36
- Erq 125 36
- Erq 200 36
- Erq 250 36
- Function 36
- Notes 1 inv inverter compressor std1 standard compressor 1 2 depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned 36
- Stand alone installation 36
- 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 37
- Step control of outdoor unit fans 37
- Used to control the revolutions of outdoor unit fans in the steps listed in table below according to condition changes 37
- Outdoor unit fan control in cooling operation 38
- While in cooling operation if the outdoor temperature is low this mode provides high pressure control using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to ahu 38
- Special control 39
- Startup control 39
- Startup control in cooling operation 39
- Startup control in heating operation 39
- This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor thus reducing startup loads furthermore the inverter is turned on to charge the capacitor in addition to avoid stresses to the compressor due to oil return or else after the startup the following control is made and the position of the four way valve is also determined to position the four way valve the master and slave units simultaneously start up 39
- 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 40
- Oil return operation 40
- Oil return operation in cooling operation 40
- Start conditions referring to the set conditions for the following items start the oil return operation in cooling cumulative oil feed rate timer setting make this setting so as to start the oil return operation when the initial cumulative operating time reaches two hours after power supply is turned on and then every eight hours furthermore the cumulative oil feed rate is computed from tc te and compressor loads 40
- Oil return operation in heating operation 41
- Defrosting operation 42
- In the case of multi outdoor unit system master unit performs the operations listed in the table above slave units operating units perform the operations listed in the table above non operating units perform the operations listed in the table above from the defrost operation non operating unit stops during defrost preparation operation actuators are based on rxyq14 18p 42
- To defrost the outdoor unit heat exchanger while in evaporator the defrost operation is conducted to recover the heating capacity start conditions referring to the set conditions for the following items start the defrosting operation heat transfer coefficient of the outdoor unit heat exchanger heat exchange temperature tb timer set to two hours at minimum furthermore the heat transfer coefficient of the outdoor unit evaporator is computed from tc te and compressor loads 42
- If the liquid refrigerant stays in the evaporator at the startup of a compressor this liquid refrigerant enters the compressor thus resulting in diluted oil in the compressor and then degraded lubrication performance consequently in order to recover the refrigerant in the evaporator while the compressor stops the pump down residual operation is conducted 43
- Pump down residual operation 43
- Pump down residual operation in cooling operation 43
- Pump down residual operation in heating operation 43
- Crankcase heater control 44
- In order to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater 44
- Restart standby 44
- Standby 44
- Used to forcedly stop the compressor for a period of 3 minutes in order to prevent the frequent on off of the compressor and equalize the pressure within the refrigerant system 44
- In order to protect compressors if any of the following items has an abnormal value the system will make stop with thermostat off and the malfunction will be determined according to the number of retry times 45
- Stop due to malfunction 45
- Stopping operation 45
- This mode is used to define actuator operations when the system stops 45
- When system is in stop mode normal operation stop 45
- Function 46
- High pressure protection control 46
- In cooling operation 46
- In heating operation 46
- Protection control 46
- Protection control esien09 06 46
- 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 46
- Hot gas svp off 47
- Hot gas svp on 47
- In cooling operation 47
- In heating operation 47
- Low pressure protection control 47
- This low pressure protection control is used to protect compressors against the transient decrease of low pressure 47
- Unit 52 hz off off 47
- After 10 min 48
- Applicable std compressor stops 48
- Discharge pipe protection control 48
- Discharge pipe temp protection control not limited 48
- Inv compressor 48
- Std compressor 48
- Te and suction superheated degree 48
- This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature 48
- Value of compressor port temperature calculated by t 48
- Value of std compressor discharge pipe temperature tds compensated with outdoor air temperature 48
- Fin temp standby 49
- 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 49
- Inverter fin temp 81 c continues for 3 min or more 49
- Inverter fin temperature control 49
- Inverter overcurrent protection control 49
- Inverter protection control 49
- Tfin 81 c inv upper limit rps max 49
- Under fin temperature protection control 49
- For transitional rise in discharge pipe temperature have the liquid refrigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection 50
- Injection control only for erq 125 a7w1b 50
- Std compressor overload protection 50
- This control is used to prevent abnormal heating due to overcurrent to the compressor resulting from failures of std compressor such as locking 50
- Caution in order to disable the compressor operation due to a failure or else be sure to do so in emergency operation mode never attempt to disconnect power supply wires from magnetic contactors or else doing so will operate compressors in combination that disables oil equalization between the compressors thus resulting in malfunctions of other normal compressors 51
- Emergency operation only for erq 250 a7w1b 51
- Other control 51
- Restrictions for emergency operation 51
- Blink h1 52
- Function 52
- In order to set std1 compressor to operation prohibition mode set no 19 of setting mode 2 to std1 operation prohibition erq 250 a7w1b 52
- Led display 52
- Other control esien09 06 52
- Principle 52
- Set the system to operation prohibition mode by compressor in order to set an inv compressor to operation prohibition mode set no 42 of setting mode 2 to emergency operation 52
- Demand operation 53
- Heating operation is prohibited above 24 c ambient temperature 53
- Heating operation prohibition 53
- In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using demand 1 setting or demand 2 setting to operate the unit with this mode additional setting of continuous demand setting or external input by external control adapter is required 53
- Cooling 54
- Outline of control 54
- Thermostat sensor in remote control only for z control 54
- Heating 55
- Hot start control in heating operation only 55
- Freeze prevention 56
- Freeze prevention by off cycle ahu 56
- Details 57
- Low outdoor air temperature protection control 57
- Objective 57
- Attention points 0 5 system a ekeqf ekeqd box installation and operation manual 1 6 system b ekeqm box installation and operation manual 6 59
- Different systems with their control boxes 0 59
- Part 5 control box ekeq cbv3 59
- Wiring diagram of control box 8 59
- X y z control 5 59
- Different systems with their control boxes 60
- System a pair 60
- Control box ekeq cbv3 51 61
- Ekeqfcb ekeqdcb 61
- Esien09 06 different systems with their control boxes 61
- Exv kit 61
- System a erq unit exv kit 61
- Allowable height 62
- Allowable lengths and heights system a 62
- Control box ekeq cbv3 62
- Different systems with their control boxes esien09 06 62
- Exv kit 62
- Multi application with vrv means the ability to combine 1 outdoor unit several ahu as well as vrv indoors minimum 1 is required the required control box for this application is ekeqm 62
- Only for combining vrv ahu indoors no erq 62
- Outdoor 62
- System b multi 62
- System b multi suction control vrv exv kit 62
- Total system 62
- Control box ekeq cbv3 53 63
- Ekeqmcb 63
- Esien09 06 different systems with their control boxes 63
- System b vrv exv kit 63
- Allowable height 64
- Allowable lengths and heights system b 64
- Connection ratio 50 110 64
- Control box ekeq cbv3 64
- Different systems with their control boxes esien09 06 64
- Exv kit 1 64
- Exv kit n 64
- Outdoor 64
- Total system 64
- Ahu te 65
- Ddc room 65
- X control 65
- X y z control 65
- Control of evaporating and condensing temperature te and tc by daikin control no ddc needed 66
- Different levels 66
- Example continued 3 vdc level 2 thus meaning an increase of the refrigerant target temperature in heating mode this means tc 1 c logically the room temperature will rise so at the next signal we are in level 3 where tc is kept even 66
- Example room temperature 20 c set temperature 25 c heating operation ddc controller calculates the difference and sends a 3 vdc signal fictive value to the control box this is between 1 8 and 3 8 so in level 2 when the room temperature rises to 23 c the ddc controller detects a smaller temperature difference and will send out a higher signal ex 5 vdc the output voltage has increased so you have to use the highest line indicating that you are now in level 3 when the window is opened the room temperature drops and the difference with the set temperature is higher the ddc sends a 1 v signal according to the output voltage decreasing line we are now in level 1 66
- Fixed te or tc te user setting 3 10 c tc user setting 43 49 c 66
- Inside the control box this 0 10 vdc signal is converted into a voltage level 66
- Refrigerant target temperature 66
- Room temp set temp 66
- The output voltage increase gives the voltage at which the level increases the output voltage decrease gives the voltage at which the level decreases 66
- Y control 66
- Components for control air thermistor daikin brc1d daikin krp4a daikin option remote on off 67
- Components for control brc1d only for servicing 67
- Control of air temperature ts or tr by daikin control no ddc needed 67
- Low cost brc needed no possibility for td control 67
- Low cost no brc needed no air temperature control 67
- With y control there is no external input to change te tc value their values can only be changed by local setup with a daikin remote control during installation we refer to the chapter field setting for further information 67
- Z control 67
- 50hz 230v 68
- Control box ekeq cbv3 68
- Wiring diagram of control box 68
- Wiring diagram of control box esien09 06 68
- 50hz 230v 69
- Control box ekeq cbv3 59 69
- Esien09 06 pdf 67 2 16 2010 4 42 35 pm 69
- Esien09 06 wiring diagram of control box 69
- Attention points 70
- System a ekeqf ekeqd box installation and operation manual 71
- Ekeqfcbv3 ekeqdcbv3 72
- Installation and operation manual 72
- Option kit for combination of daikin condensing units with field supplied air handling units 72
- Installation and operation manual 74
- Ntroduction 74
- Figure 75
- Figure 1 75
- Nstallation 75
- Electing the installation site 76
- Figure 76
- For the following items take special care during construction and check after installation is finished 76
- Precautions 76
- 2 3 4 5 77
- Alve kit installation 77
- Brazing work 77
- Cautions for brazing 77
- Electrical work 77
- Mechanical installation 77
- A1p printed circuit board 79
- A2p printed circuit board for voltage conversion 79
- A3p printed circuit board power supply 79
- Blk black 79
- Blu blue 79
- Brn brown 79
- Connect cables according to specifications of the next table 79
- Connect the wires to the terminal board according to the wiring diagram in 79
- Connecting the wiring ekeqfcbv3 79
- Connector 79
- F1u fuse 250 v f5a a1p 79
- F2u fuse 250 v t1a a3p 79
- F3u field fuse 79
- Field wiring 79
- Figure 79
- For wiring intake in the control box the wiring intake hole indication h1 refers to the h1 cable of the corresponding wiring diagram 79
- Grn green 79
- Gry gray 79
- Hap light emitting diode service monitor green 79
- K1r kar kpr magnetic relay 79
- K2r magnetic relay error status 79
- K3r magnetic relay operation compressor on off 79
- K4r magnetic relay fan 79
- K5r magnetic relay defrost signal 79
- L live 79
- N neutral 79
- Optional accessory 79
- Org orange 79
- Pnk pink 79
- Protective earth screw 79
- Q1di earth leakage breaker 79
- R2t thermistor liquid 79
- R3t thermistor gas 79
- R5 resistance 120 79
- R6 capacity adapter 79
- Red red 79
- Separate component 79
- T1r transformer 220 v 21 v 79
- Table connection and application 79
- Take special precaution for connection to the controller field supply do not miswire the output signals nor the input signal on off this mistake could damage the entire system 79
- Wht white 79
- Wire clamp 79
- Wiring diagram 79
- X1m c7 c8 output fan on off 79
- X1m c9 c10 output defrost signal 79
- X1m r1 r2 thermistor liquid 79
- X1m r3 r4 thermistor gas 79
- X1m x2m x3m terminal block 79
- X1m y1 6 expansion valve 79
- X2m c1 c2 output error status 79
- X2m c3 c4 output operation compressor on off 79
- X2m c5 c6 input 0 10 v dc capacity control 79
- X2m f1 f2 communication outdoor unit 79
- X2m p1 p2 communication remote control 79
- X2m t1 t2 input on off 79
- Y1e electronic expansion valve 79
- Ylw yellow 79
- A1p printed circuit board 80
- A2p printed circuit board option krp4 80
- Blk black 80
- Blu blue 80
- Brn brown 80
- Connect cables according to specifications of the next table 80
- Connect the wires to the terminal board according to the wiring diagram in figure 5 see figure 6 for wiring intake in the control box the wiring intake hole indication h1 refers to the h1 cable of the corresponding wiring diagram 80
- Connecting the wiring ekeqdcbv3 80
- Connector 80
- F1u fuse 250 v f5a a1p 80
- F3u field fuse 80
- Field wiring 80
- Grn green 80
- Gry gray 80
- Hap light emitting diode service monitor green 80
- K1r magnetic relay 80
- K4r magnetic relay fan 80
- L live 80
- N neutral 80
- Optional accessory 80
- Org orange 80
- Pnk pink 80
- Protective earth screw 80
- Q1di earth leakage breaker 80
- R1t thermistor air 80
- R2t thermistor liquid 80
- R3t thermistor gas 80
- R7 capacity adapter 80
- Red red 80
- Separate component 80
- T1r transformer 220 v 21 v 80
- Table connection and application 80
- Wht white 80
- Wire clamp 80
- Wiring diagram 80
- X1m c1 c2 output fan on off 80
- X1m f1 f2 communication outdoor unit 80
- X1m p1 p2 communication remote control 80
- X1m r1 r2 thermistor liquid 80
- X1m r3 r4 thermistor gas 80
- X1m r5 r6 thermistor air 80
- X1m t1 t2 input on off 80
- X1m x3m terminal block 80
- X1m y1 6 expansion valve 80
- Y1e electronic expansion valve 80
- Ylw yellow 80
- Air thermistor only for ekeqdcb 81
- Fixation of the thermistor 81
- Installation of the thermistor cable 81
- Location of the thermistor 81
- Nstallation of thermistors 81
- Refrigerant thermistors 81
- Efrigerant piping work 82
- Est operation 82
- Hat to do before operation 82
- Peration and maintenance 82
- At which the application has to operate can be set by code numbers as listed below 83
- Condensing temperature 83
- Discharge air of the air handling unit 83
- Measures must be taken to ensure that after power failure t1 t2 is according to the setting of your preference neglecting this caution will result in improper operation 83
- Operation setting in case of power failure 83
- Operation with 0 10 v capacity control 83
- Operation with fixed 83
- Program the field supplied controller to generate a 0 10 v signal within conditions as listed also refer to the graphic and further data in this paragraph for more details 83
- Room air 83
- Suction air of the air handling unit 83
- Temperature control 83
- The 0 10 v input is only used for this system of operation and is the base of the capacity control 83
- The evaporating temperature 83
- This system needs a field supplied controller with a temperature sensor the temperature sensor can be used to control any temperature 83
- When higher refrigerant temperature is needed 0 5 v 83
- When lower refrigerant temperature is needed 5 10 v 83
- When target temperature is reached 5 v 83
- Δ t 0 83
- Δ tmax 83
- Not a malfunction of the air conditioner 84
- Peration and display signals 84
- Roubleshooting 84
- Trouble shooting 84
- Aintenance 85
- Isposal requirements 85
- System b ekeqm box installation and operation manual 86
- Ekeqmcbv3 87
- Installation and operation manual 87
- Option kit for combination of daikin condensing units with field supplied air handling units 87
- Installation and operation manual 89
- Ntroduction 89
- Ame and function of part 90
- Ccessories 90
- Efore installation 90
- Nstallation 90
- Electing the installation site 91
- For the following items take special care during construction and check after installation is finished 91
- Iping installation 91
- Piping limits 91
- Precautions 91
- 2 3 4 5 92
- Be sure to carry out a nitrogen blow when brazing brazing without carrying out nitrogen replacement or releasing nitrogen into the piping will create large quantities of oxidized film on the inside of the pipes adversely affecting valves and compressors in the refrigerating system and preventing normal operation 92
- Cautions for brazing 92
- Construction material phosphoric acid deoxidized seamless copper for refrigerant 92
- For details see manual of the outdoor unit 92
- Foreign materials inside pipes including oils for fabrication must be 30 mg 10 m or less 92
- In case the required pipe sizes inch sizes are not available it is also allowed to use other diameters mm sizes taken the following into account 92
- Make sure to install gas and liquid pipe diameters in function of the air handling unit capacity class 92
- Piping connections 92
- Select the pipe size nearest to the required size 92
- Selection of piping material 92
- Temper grade use piping with temper grade in function of the pipe diameter as listed in the table below 92
- The pipe thickness of the refrigerant piping should comply with relevant local and national regulations the minimal pipe thickness for r410a piping must be in accordance with the table below 92
- Use the following material specification for refrigerant piping 92
- Use the suitable adapters for the change over from inch to mm pipes field supply 92
- When brazing while inserting nitrogen into the piping nitrogen must be set to 0 2 mpa with a pressure reducing valve just enough so that it can be felt on the skin 92
- Connection of the wires inside the control box 94
- Lectric wiring work 94
- Mechanical installation 94
- Nstallation of the electrical control bo 94
- Precautions 94
- A1p printed circuit board 95
- A2p printed circuit board option krp4 95
- Blk black 95
- Blu blue 95
- Brn brown 95
- Connect cables according to specifications of the next table 95
- Connect the wires to the terminal board according to the wiring diagram in figure 2 see figure 3 for wiring intake in the control box the wiring intake hole indication h1 refers to the h1 cable of the corresponding wiring diagram there are 2 wiring intake holes to allow for branching of the communication wire 95
- Connecting the wiring ekeqmcbv3 95
- Connector 95
- F1u fuse 250 v f5a a1p 95
- F3u field fuse 95
- Field wiring 95
- Grn green 95
- Gry gray 95
- Hap light emitting diode service monitor green 95
- K1r magnetic relay 95
- K4r magnetic relay fan 95
- L live 95
- N neutral 95
- Optional accessory 95
- Org orange 95
- Pnk pink 95
- Protective earth screw 95
- Q1di earth leakage breaker 95
- R1t thermistor air 95
- R2t thermistor liquid 95
- R3t thermistor gas 95
- R7 capacity adapter 95
- Red red 95
- Separate component 95
- T1r transformer 220 v 21 v 95
- Table connection and application 95
- Wht white 95
- Wire clamp 95
- Wiring diagram 95
- X1m c1 c2 output fan on off 95
- X1m f1 f2 communication outdoor unit 95
- X1m p1 p2 communication remote control 95
- X1m r1 r2 thermistor liquid 95
- X1m r3 r4 thermistor gas 95
- X1m r5 r6 thermistor air 95
- X1m t1 t2 input on off 95
- X1m x3m terminal block 95
- X1m y1 6 expansion valve 95
- Y1e electronic expansion valve 95
- Ylw yellow 95
- Air thermistor 96
- Fixation of the thermistor 96
- Installation of the thermistor cable 96
- Location of the thermistor 96
- Nstallation of thermistors 96
- Refrigerant thermistors 96
- Efrigerant piping work 97
- Est operation 97
- Hat to do before operation 97
- Peration and display signals 97
- Peration and maintenance 97
- Aintenance 98
- Isposal requirements 98
- Not a malfunction of the air conditioner 98
- Roubleshooting 98
- Trouble shooting 98
- Outdoor unit pc board layout 05 3 field setting 06 99
- Part 6 test operation 99
- Test operation 0 99
- Installation process 100
- Test operation 100
- Check work prior to turn power supply on 101
- Procedure and outline 101
- Turn power on 102
- Air tight test and vacuum drying 103
- Esien09 06 test operation 103
- Note always use nitrogen gas for the airtightness test absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 103
- Note the airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right see shutoff valve operation procedure for details on handling the shutoff valve the refrigerant charge port is connected to unit pipe when shipped the unit contains refrigerant so use caution when attaching the charge hose 103
- Preparations 103
- Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 103
- Test operation 93 103
- Additional refrigerant charge and check operation 104
- Air tight test and vacuum drying method 104
- Before working 104
- Note do not open the shutoff valve until 1 check work prior to turn power supply on in page 91 are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation be sure to use the correct tools the shutoff valve is not a back seat type if forced it to open it might break the valve body when using a service port use the charge hose after tightening the cap make sure no refrigerant gas is leaking 105
- Shutoff valve operation procedure 105
- When operating the shutoff valve follow the procedure instructed below 105
- Procedure of adding refrigerant charging and check operation 106
- Esien09 06 test operation 107
- Fig 31 107
- Fig 32 107
- Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db 107
- Open the valve c see the figure 31 the valve a b and the liquid and gas side shutout valve must be left closed and charge the refrigerant of the additional charging amount from the liquid side shutout valve service port if the additional charging amount was charged fully close the valve c and go to step 5 if the additional charging amount was not charged fully go to step 4 107
- Perform the refrigerant charging operation following refrigerant charging operation procedure and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a for operating the push button and opening and closing the valve follow the work procedure 107
- Test operation 97 107
- C x x w x x x x x 108
- Refrigerant charging operation procedure 108
- C x x w x x x x x 109
- Check operation procedure 109
- If any malfunction codes other than the above are displayed check the service manual for how to respond 110
- Remote control displays malfunction code 110
- Onsite settings 111
- Onsite settings with the power off 111
- Onsite settings with the power on 111
- Before test run 112
- Test run 112
- Checks after test run 113
- Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address status 114
- Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 114
- Operation when power is turned on 114
- Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 114
- The unit cannot be run for up to 12 minutes to automatically set the master power and address status 114
- When an ahu or outdoor unit has been added or ahu or outdoor unit pc board has been changed 114
- When turning on power first time 114
- When turning on power the second time and subsequent 114
- 1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 115
- 2 set mode display led leds display mode according to the setting 115
- 3 mode setting switch used to change mode 115
- 4 local setting switch used to make field settings 115
- Outdoor unit pc board 115
- Outdoor unit pc board layout 115
- Field setting 116
- Field setting from remote control 116
- Mode no first code no second code no field set mode 116
- Wired remote control 116
- Simplified remote control 117
- 1 system setting 118
- Field settings details 118
- Field settings overview 118
- Note in the table below the factory settings are indicated in bold 118
- Remark 1 more settings possible see field settings 118
- The erq is a heat pump but can be limited to cooling only or heating only by a setting 118
- 2 control setting for ekeqf box 119
- 3 indoor fan control 119
- 4 hot start 119
- During hot start fan on is carried out when 119
- Fan off during thermo off and fan on during defrost oil return will result in fan on during thermo off 119
- In cooling and fan only mode the indoor fan is in on mode when the unit is working in heating different situations are possible 119
- Is a c or after b minutes 119
- With the ekeqf box 2 types of control are possible x control with ddc controller y control no ddc controller for more information about x y control refer to part 5 control box ekeq cbv3 119
- 5 thermostat control 120
- 5 x control 120
- Thermo off when the ddc controller maintains level a for more than b minutes and the thermostat is on thermo off is carried out for at least c minutes after c minutes thermostat on conditions are checked 120
- Thermo on when the ddc controller reaches level d or higher lower for heating and the thermostat is off for at least c minutes refer to thermo off conditions thermostat on is carried out for at least e minutes 120
- 5 y control 121
- 5 z control 121
- 6 target refrigerant temperature setting 121
- 6 x control 121
- After c minutes the units starts to operate 121
- B for c minutes thermo off is applied for c minutes 121
- B for c minutes thermo off is applied for c minutes heating 121
- Can be chosen 121
- Cooling 121
- Cooling upper lower limit of 121
- Standard daikin thermostat on off control 121
- 6 y control 122
- 7 renewal of target refrigerant temperature x control 122
- Can be chosen 122
- Heating upper lower limit of 122
- Setting 122
- Setting heating 122
- Since there is no external input to change the 122
- Value of the outdoor is updated simultaneously otherwise the 122
- Value remains constant when the ddc level remains constant for a seconds a level update is executed in the main pcb 122
- Value their values can only be changed by local setup by means of the daikin remote control during installation cooling 122
- When a level of the main pcb is updated the 122
- Setting of operation control mode from remote control local setting 123
- The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote control furthermore operations such as remote control on off can be limited in accordance with the combination conditions 123
- Field setting from outdoor unit 124
- List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 106 onward 124
- For setting items of 1 refer to detailed information provided on previous page 125
- Caution 126
- Dip switch detail 126
- Dip switch setting after changing the main p c board a1p to spare parts p c b after the replacement by the spare pc board be sure to make settings shown below when you change the main p c board a1p to spare parts p c b please carry out the following setting 126
- If the ds1 1 1 4 ds2 2 2 4 setting has not been carried out error code ua are displayed and unit can not be operated 126
- Initial conditions of dip switches 126
- Make the following settings according to models of outdoor units all models are set to off at factory 126
- Refer ds1 1 4 ds2 1 4 setting detail on next page 126
- Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 126
- Detail of ds1 1 4 ds2 1 4 setting for overseas general 127
- Esien09 06 field setting 127
- Heat pump 10hp erq 250 set ds2 1 ds2 2 and ds2 3 to on 127
- Heat pump 5hp erq 125 set ds2 1 to on 127
- Heat pump 8hp erq 200 set ds2 1 and ds2 3 to on 127
- Test operation 117 127
- Unit setting method represents the position of switches 127
- Cool heat select low noise h6p 128
- Demand 128
- Factory setting 128
- Field setting esien09 06 128
- H8p ind h3p master 128
- Led display mode h1p test h2p 128
- Mode changing procedure 2 128
- Setting by pushbutton switches the following settings are made by pushbutton switches on pc board 128
- Single outdoor unit system 128
- Test operation 128
- There are the following three setting modes 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 setting mode 2 h1p on used to modify the operating status and to set program addresses etc usually used in servicing the system monitor mode h1p blinks used to check the program made in setting mode 2 mode changing procedure 1 128
- X x w x x x x x 128
- A setting mode 1 129
- Esien09 06 field setting 129
- Procedure for changing cool heat selection setting 129
- Test operation 119 129
- 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 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 129
- X x c x x x x 129
- X x w x x x x 129
- B setting mode 2 130
- C monitor mode 134
- Cool heat mode switching 136
- Field setting esien09 06 136
- Set cool heat for outdoor unit system by ahu remote control 136
- Set outdoor unit pc board ds1 1 to in factory set set cool heat switching to ind individual for setting mode 1 factory set 136
- Test operation 136
- There are the following 2 cool heat switching modes set cool heat separately for each outdoor unit system by ahu remote control only for z control set cool heat separately for each outdoor unit system by cool heat selector x y and z control 136
- Control box 137
- Cool heat selector 137
- Esien09 06 field setting 137
- Remote control 137
- Set cool heat for outdoor unit system by cool heat selector 137
- Set outdoor unit pc board ds1 1 to out factory set set cool heat switching to ind individual for setting mode 1 factory set 137
- Test operation 127 137
- Setting of low noise operation 138
- Setting of low noise operation and demand operation 138
- Esien09 06 field setting 139
- Esien09 06 pdf 137 2 16 2010 4 42 43 pm 139
- Image of operation in the case of a 139
- Image of operation in the case of a and b 139
- Image of operation in the case of b 139
- Test operation 129 139
- A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 140
- B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 140
- By connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 140
- Setting of demand operation 140
- Esien09 06 field setting 141
- Image of operation in the case of a 141
- Image of operation in the case of a and b 141
- Image of operation in the case of b 141
- Test operation 131 141
- Detailed setting procedure of low noise operation and demand control 142
- Setting of refrigerant recovery mode 144
- Check operation detail 145
- Check operation function 145
- Setting of vacuuming mode 145
- Part 7 installation and operation manual 147
- Erq125a7w1b erq200a7w1b erq250a7w1b 148
- Installation manual 148
- Inverter condensing unit 148
- A b c d a b 149
- Installation manual 151
- Ontents 151
- Ain components 152
- Combination 152
- Election of location 152
- Ntroduction 152
- Standard supplied accessories 152
- Technical and electrical specifications 152
- Npacking and placing the unit 153
- Nspecting and handling the unit 153
- Connecting the refrigerant piping 154
- Efrigerant piping 154
- Installation tools 154
- Pipe connection 154
- Selection of piping material 154
- Additional refrigerant to be charged r kg r should be rounded off in units of 0 kg 156
- After all the piping has been connected make sure there is no gas leak use nitrogen to perform a gas leak check 156
- Bottom connection remove the knock holes on the bottom frame and route the piping under the bottom frame 156
- Determine the weight of refrigerant to be charged additionally referring to the item additional refrigerant charge on page 154 and fill in the amount on the fluorinated greenhouse gas label 156
- Diameters 156
- Front connection remove the stop valve cover to connect 156
- Great caution is needed when passing copper tubes through walls block all gaps in the holes for passing out piping and wiring using sealing material field supply the capacity of the unit will drop and small animals may enter the machine example passing piping out through the front 156
- How to calculate the additional refrigerant to be charged 156
- Installation limitations 156
- Make sure the onsite piping does not come into contact with other piping the bottom frame or side panels of the unit 156
- Piping connections 156
- Piping length restrictions 156
- Processing the gas side accessory pipe 2 only in case of connecting at lateral side cut the gas side accessory pipe 2 as shown in 156
- Protection against contamination when installing pipes 156
- R total length m of liquid piping size at ø9 x0 59 156
- Take measures to prevent foreign materials like moisture and contamination from mixing into the system 156
- When connecting the piping on site be sure to use the accessory piping 156
- Eak test and vacuum drying 157
- Ield wiring 157
- Internal wiring parts table 158
- Optional parts cool heat selector 158
- General cautions 159
- Power circuit and cable requirements 159
- After knocking out the holes we recommend you paint the edges and areas around the edges using the repair paint to prevent rusting 160
- Be sure to connect the power wiring to the power wiring terminal block and secure it as described under 8 field line connection power wiring on page 151 160
- Be sure to let the power line and the transmission line pass through a conduit hole 160
- Field line connection cool heat selection 160
- Fixing transmission wiring 160
- For the above wiring always use vinyl cords with 0 5 to 1 5 m 160
- Inside switchbox 160
- Inter unit wiring should be secured as described in 8 field line connection cool heat selection on page 150 secure the wiring with the accessory clamps so that it does not touch the piping and no external force can be applied to the terminal make sure the wiring and the electric box lid do not stick up above the structure and close the cover firmly 160
- Lead the power line from the upper hole on the left side plate from the front position of the main unit through the conduit hole of the wiring mounting plate or from a knock out hole to be made in the unit s bottom plate 160
- Leading power line and transmission line 160
- Never connect 400 v to the terminal block of the interconnecting wiring doing so will break the entire system the wiring from the control box must be connected to the f1 f2 in out terminals on the pc board in the outdoor unit after installing the interconnecting wires inside the unit wrap them along with the on site refrigerant pipes using finishing tape as shown in 160
- Never connect the power supply to transmission wiring terminal block otherwise the entire system may break down 160
- Outside the unit make sure the weak low voltage electric wiring i e for the remote control between units etc and the high voltage electric wiring do not pass near each other keeping them at least 50 mm apart proximity may cause electrical interference malfunctions and breakage 160
- Outside unit 160
- Precautions when knocking out knockout holes 160
- Sheath or cables 2 core wires 3 core wire cables are allowable for the cooler heater changeover remote control only 160
- System examples 160
- To punch a knockout hole hit on it with a hammer 160
- Use a power wire pipe for the power wiring 160
- When passing electrical wiring through the knockout holes remove any burrs from the knockout hole edges wrap the wiring with protective tape in order to prevent damage to the wires put the wires through field supplied protective wire conduits at that location or install suitable field supplied wire nipples or rubber bushings into the knockout holes 160
- Field line connection power wiring 161
- Setting the cool heat operation 161
- Harging refrigerant 162
- Hecking of unit and installation conditions 162
- Important information regarding the refrigerant used 162
- Ipe insulation 162
- Wiring example for wiring inside unit 162
- Precautions when adding r410a 163
- Stop valve operation procedure 163
- Additional refrigerant charge 164
- After adding the refrigerant do not forget to close the lid of the refrigerant charging port the tightening torque for the lid is 11 to 13 n m 164
- Always use protective gloves and protect your eyes when charging refrigerant 164
- Are the stop valves for both liquid and gas open 164
- C x x w x x x x x 164
- Calculate how much refrigerant to be added using the formula explained in the chapter 4 how to calculate the additional refrigerant to be charged on page 146 164
- Charge with the outdoor unit at standstill 164
- Checks after adding refrigerant 164
- Close the electric box lid before turning on the main power 164
- Electric shock warning 164
- Follow the procedures below 164
- If operation is performed within 12 minutes after the air handling unit and outdoor units are turned on the h2p led will be lit and the compressor will not operate 164
- In order to ensure uniform refrigerant distribution it may take the compressor 10 minutes to start up after the unit has started operation this is not a malfunction 164
- Is the amount of refrigerant that has been added recorded 164
- Make sure to open the stop valves after charging the refrigerant 164
- Make sure to turn on the power 6 hours before starting the operation this is necessary to warm the crankcase by the electric heater 164
- Normal system display 164
- Open valve c valves a and b and the stop valves must be left closed and charge the required amount of refrigerant through the liquid side stop valve service port 164
- Operating with the stop valves closed will damage the compressor 164
- Perform the settings on the circuit board a1p of the outdoor unit and check the led display after the power is on via the service lid which is in the lid of the electric box operate switches with an insulated stick such as a ball point pen to avoid touching the life parts make sure to re attach the inspection cover into the switch box cover after the job is finished 164
- Remote control cooling mode malfunction codes 164
- Remote control heating mode malfunction codes 164
- Remote control malfunction code display 164
- See 11 stop valve operation procedure on page 153 for details on how to handle stop valves 164
- The refrigerant charging port is connected to the piping inside the unit the unit s internal piping is already factory charged with refrigerant so be careful when connecting the charge hose 164
- The refrigerant leak detection function can not be used 164
- When charging a system charging over the permissible quantity can cause liquid hammer 164
- When the refrigerant charging procedure is done or when pausing close the valve of the refrigerant tank immediately if the tank is left with the valve open the amount of refrigerant which is properly charged may get off point more refrigerant may be charged by any remaining pressure after the unit has stopped 164
- When the required amount of refrigerant is fully charged close valve c record the amount of refrigerant that was added on the additional refrigerant charge label provided with the unit and attach it on the back side of the front panel perform the test procedure as described in 164
- A2p a2p 165
- Checks before initial start up 165
- Efore operation 165
- Field setting 165
- Opening the switch box and handling the switches 165
- Service precautions 165
- And the button is pushed once the setting mode will change to setting mode 1 166
- Be sure to turn the power on at least 6 hours before operation inorder to have power running to the crank case heater 166
- Bs1 mode 166
- Bs2 set 166
- Bs3 return 166
- Bs4 test 166
- Bs5 reset 166
- C x x w x x x x x 166
- Check operation procedure 166
- For setting mode 1 press the button once the h1p led is off 166
- For setting mode 2 press the button for 5 seconds the h1p led is on 166
- Function of the push button switch which is located on the outdoor unit pcb a1p 166
- H1p h2p h3p h4p h5p h6p h7p 166
- Hwl ind master slave l n o p demand c h select 166
- If the h1p led is blinking 166
- If you get confused in the middle of the setting process push the button then it returns to setting mode 1 h1p led is off 166
- Led state 166
- Location of the dip switches leds and buttons 166
- Make sure that transmission is normal by checking the led display on the outdoor unit circuit board a1p if transmission is normal each led will be displayed as shown below 166
- Mode test 166
- Not in case of cooling only unit 166
- Only in case of a heat pump unit 166
- Push the button and adjust the led indication to either one of the possible settings as shown below in the field marked 166
- Push the button and the setting is defined 166
- Return 166
- Setting mode 1 166
- Setting procedure 166
- Setting the dip switches 166
- Setting the mode 166
- Setting the push button switch bs1 5 166
- The figure shows state of the led indications when the unit is shipped from the factory 166
- The h1p led is off cool heat selection setting 166
- The set mode can be changed with the button according to the following procedure 166
- Throughout the manual the state of the leds is indicated as follows 166
- Turn the power on for the outdoor unit the control box and air handling unit 166
- X x c x x x x 166
- Ervice mode operation 168
- X w w x x x x 168
- X x w x x x x 168
- Aution for refrigerant leaks 169
- Introduction 169
- Isposal requirements 169
- Maximum concentration level 169
- Procedure for checking maximum concentration 169
- Erq100a7v1b erq125a7v1b erq140a7v1b 170
- Erq125a7w1b erq200a7w1b erq250a7w1b 170
- Inverter condensing unit 170
- Operation manual 170
- Afety cautions 172
- Operation manual 172
- Warnings 172
- Cautions 173
- Hat to do before operation 173
- Mportant information regarding the refrigerant used 173
- Ame and function of each switc 174
- Cooling heating and fan only operation 174
- Emote control 174
- Explanation of heating operation 174
- For systems with cool heat changeover remote control switch 174
- For systems with daikin remote control and without cool heat changeover remote control switch 174
- For systems without daikin remote control without cool heat changeover remote control swith and with a field supplied controller 174
- Hangeover switc 174
- Operation range 174
- Peration procedure 174
- Peration range 174
- Aintenance 175
- Maintenance after a long stop period 175
- Maintenance before a long stop period 175
- Nergy saving and optimum operation 175
- Ollowing symptoms are not air conditioner troubles 175
- Roubleshooting 176
- After sales service 177
- Sales service and warranty 177
- Shortening of maintenance cycle and replacement cycle needs to be considered in following situations 177
- Part 8 troubleshooting 179
- Symptom based troubleshooting 71 2 troubleshooting by remote control 74 179
- Troubleshooting by indication on the remote control 85 179
- Troubleshooting op unified on off controller 53 180
- Symptom based troubleshooting 181
- Inspection mode 184
- Local setting mode 184
- Normal mode 184
- Service mode 184
- Test operation mode 184
- The following modes can be selected by using the inspection test operation button on the remote control 184
- The inspection test button 184
- Troubleshooting by remote control 184
- Explanation 185
- Self diagnosis by wired remote control 185
- How to enter the service mode 186
- Remote control service mode 186
- Select the mode no set the desired mode no with the button for infrared remote control mode 43 only can be set 2 return to the normal operation mode push the button one time 186
- Service mode operation method 186
- Troubleshooting 186
- Troubleshooting by remote control esien09 06 186
- Remote control self diagnosis function 188
- The system operates for malfunction codes indicated in black squares however be sure to check and repair 190
- Detail description on next page 191
- Esien09 06 troubleshooting by remote control 191
- Malfunction code indication by outdoor unit pc board 191
- Push the mode bs1 button and return to setting mode 1 191
- Push the return bs3 button and switch to the initial status of monitor mode 191
- Push the return bs3 button once to display first digit of malfunction code 191
- Push the set bs2 button and set the led display to a setting item 191
- Push the set bs2 button once to display malfunction location 191
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 191
- Push the set bs2 button once to display second digit of malfunction code 191
- Refer to p 84 for monitor mode 191
- To enter the monitor mode push the mode bs1 button when in setting mode 1 191
- Troubleshooting 181 191
- Troubleshooting 192
- Troubleshooting by remote control esien09 06 192
- Detail description on next page 193
- Esien09 06 troubleshooting by remote control 193
- Push the mode bs1 button and return to setting mode 1 193
- Push the return bs3 button and switch to the initial status of monitor mode 193
- Push the return bs3 button once to display first digit of malfunction code 193
- Push the set bs2 button and set the led display to a setting item 193
- Push the set bs2 button once to display malfunction location 193
- Push the set bs2 button once to display master or slave 1 or slave 2 and malfunction location 193
- Push the set bs2 button once to display second digit of malfunction code 193
- Refer to p 84 for monitor mode 193
- To enter the monitor mode push the mode bs1 button when in setting mode 1 193
- Troubleshooting 183 193
- Troubleshooting 194
- Troubleshooting by remote control esien09 06 194
- A0 ahu error of external protection device 195
- Actuation of external protection device improper field set defect of ahu pc board 195
- All ahu models 195
- Applicable models 195
- Detect open or short circuit between external input terminals in ahu 195
- Malfunction decision conditions 195
- Method of malfunction detection 195
- Remote control display 195
- Supposed causes 195
- Troubleshooting 195
- Troubleshooting by indication on the remote control 195
- When an open circuit occurs between external input terminals with the remote control set to external on off terminal 195
- A1 ahu pc board defect 196
- A3 ahu malfunction of drain level control system s1l 197
- Applicable models 197
- Malfunction decision conditions 197
- Method of malfunction detection 197
- Remote control display 197
- Supposed causes 197
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 198
- Troubleshooting 198
- Troubleshooting by indication on the remote control esien09 06 198
- A6 ahu fan motor m1f lock overload 199
- All ahus 199
- Applicable models 199
- Detection by failure of signal for detecting number of turns to come from the fan motor 199
- Esien09 06 troubleshooting by indication on the remote control 199
- Fan motor lock disconnected or faulty wiring between fan motor and pc board 199
- Malfunction decision conditions 199
- Method of malfunction detection 199
- Remote control display 199
- Supposed causes 199
- Troubleshooting 199
- Troubleshooting 189 199
- When number of turns can t be detected even when output voltage to the fan is maximum 199
- A9 ahu malfunction of moving part of electronic expansion valve y1e 200
- All ahu models 200
- Applicable models 200
- Malfunction decision conditions 200
- Malfunction of moving part of electronic expansion valve defect of ahu pc board defect of connecting cable 200
- Method of malfunction detection 200
- Remote control display 200
- Supposed causes 200
- Troubleshooting 200
- Troubleshooting by indication on the remote control esien09 06 200
- Use a microcomputer to check the electronic expansion valve for coil conditions 200
- When the pin input of the electronic expansion valve is not normal while in the initialization of the microcomputer 200
- 1 coil check method for the moving part of the electronic expansion valve disconnect the electronic expansion valve from the pc board and check the continuity between the connector pins 201
- Continuity no continuity 201
- Normal 201
- Af ahu drain level above limit 202
- Applicable models 202
- Humidifier unit optional accessory leaking defect of drain pipe upward slope etc defect of ahu pc board 202
- Malfunction decision conditions 202
- Method of malfunction detection 202
- Remote control display 202
- Supposed causes 202
- Troubleshooting 202
- Troubleshooting by indication on the remote control esien09 06 202
- Water leakage is detected based on float switch on off operation while the compressor is in non operation 202
- When the float switch changes from on to off while the compressor is in non operation 202
- Aj ahu malfunction of capacity determination device 203
- All ahu models 204
- Applicable models 204
- C4 ahu malfunction of thermistor r2t for heat exchanger 204
- Defect of thermistor r2t for liquid pipe defect of ahu pc board 204
- Malfunction decision conditions 204
- Malfunction detection is carried out by temperature detected by heat exchanger thermistor 204
- Method of malfunction detection 204
- Refer to thermistor resistance temperature characteristics table on p270 204
- Remote control display 204
- Supposed causes 204
- Troubleshooting 204
- Troubleshooting by indication on the remote control esien09 06 204
- When the heat exchanger thermistor becomes disconnected or shorted while the unit is running 204
- All ahu models 205
- Applicable models 205
- C5 ahu malfunction of thermistor r3t for gas pipes 205
- Defect of ahu thermistor r3t for gas pipe defect of ahu pc board 205
- Esien09 06 troubleshooting by indication on the remote control 205
- Malfunction decision conditions 205
- Malfunction detection is carried out by temperature detected by gas pipe thermistor 205
- Method of malfunction detection 205
- Refer to thermistor resistance temperature characteristics table on p270 205
- Remote control display 205
- Supposed causes 205
- Troubleshooting 205
- Troubleshooting 195 205
- When the gas pipe thermistor becomes disconnected or shorted while the unit is running 205
- Aii ahu models 206
- Applicable models 206
- C9 ahu malfunction of thermistor r1t for suction air 206
- Defect of ahu thermistor r1t for air inlet defect of ahu pc board 206
- Malfunction decision conditions 206
- Malfunction detection is carried out by temperature detected by suction air temperature thermistor 206
- Method of malfunction detection 206
- Refer to thermistor resistance temperature characteristics table on p270 206
- Remote control display 206
- Supposed causes 206
- Troubleshooting 206
- Troubleshooting by indication on the remote control esien09 06 206
- When the suction air temperature thermistor becomes disconnected or shorted while the unit is running 206
- Applicable models 207
- Cj ahu malfunction of thermostat sensor in remote control 207
- Malfunction decision conditions 207
- Method of malfunction detection 207
- Remote control display 207
- Supposed causes 207
- Troubleshooting 207
- E1 outdoor unit pc board defect 208
- Applicable models 209
- E3 outdoor unit actuation of high pressure switch 209
- Malfunction decision conditions 209
- Method of malfunction detection 209
- Remote control display 209
- Supposed causes 209
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on pressure sensor 2 make a comparison between the high pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 210
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 210
- Caution 210
- Troubleshooting 210
- Troubleshooting by indication on the remote control esien09 06 210
- E4 outdoor unit actuation of low pressure sensor 211
- 1 make a comparison between the voltage of the pressure sensor and that read by the pressure gauge as to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on pressure sensor 2 make a comparison between the low pressure value checked with the service checker and the voltage of the pressure sensor see 1 3 make measurement of voltage of the pressure sensor 212
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 212
- Caution 212
- Troubleshooting 212
- Troubleshooting by indication on the remote control esien09 06 212
- Applicable models 213
- E5 outdoor unit inverter compressor motor lock 213
- Malfunction decision conditions 213
- Method of malfunction detection 213
- Remote control display 213
- Supposed causes 213
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 214
- Caution 214
- Troubleshooting 214
- Troubleshooting by indication on the remote control esien09 06 214
- Applicable models 215
- Closed stop value obstacles at the air outlet improper power voltage faulty magnetic switch faulty compressor faulty current sensor a6p a7p 215
- Detects the overcurrent with current sensor ct 215
- E6 outdoor unit std compressor motor overcurrent lock 215
- Erq 125 250 a7w1 215
- Esien09 06 troubleshooting by indication on the remote control 215
- Malfunction decision conditions 215
- Malfunction is decided when the detected current value exceeds the below mentioned value for 2 seconds 400 v unit 15 a 215
- Method of malfunction detection 215
- Note 1 abnormal case the current sensor value is 0 during std compressor operation the current sensor value is more than 15 a during std compressor stop 215
- Remote control display 215
- Supposed causes 215
- Troubleshooting 215
- Troubleshooting 205 215
- Applicable models 216
- E7 outdoor unit malfunction of outdoor unit fan motor 216
- Malfunction decision conditions 216
- Method of malfunction detection 216
- Remote control display 216
- Supposed causes 216
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 217
- Caution 217
- Esien09 06 troubleshooting by indication on the remote control 217
- Troubleshooting 217
- Troubleshooting 207 217
- Note refer check 1 and 2 to p 55 218
- Troubleshooting 218
- Troubleshooting by indication on the remote control esien09 06 218
- E9 outdoor unit malfunction of moving part of electronic expansion valve y1e y2e 219
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 220
- Caution 220
- Troubleshooting 220
- Troubleshooting by indication on the remote control esien09 06 220
- Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor 221
- Applicable models 221
- Erq 125 250 a7w1 221
- Esien09 06 troubleshooting by indication on the remote control 221
- F3 outdoor unit abnormal discharge pipe temperature 221
- Faulty discharge pipe temperature sensor faulty connection of discharge pipe temperature sensor faulty outdoor unit pc board 221
- Malfunction decision conditions 221
- Method of malfunction detection 221
- Refer to thermistor resistance temperature characteristics table on p270 221
- Remote control display 221
- Supposed causes 221
- Troubleshooting 221
- Troubleshooting 211 221
- When the discharge pipe temperature rises to an abnormally high level when the discharge pipe temperature rises suddenly 221
- Applicable models 222
- Erq 125 250 a7w1 222
- Excessive charging of refrigerant is detected by using the outside air temperature heat exchanging deicer temperature and liquid pipe temperature during a check run 222
- F6 outdoor unit refrigerant overcharged 222
- Malfunction decision conditions 222
- Method of malfunction detection 222
- Refer to thermistor resistance temperature characteristics table on p270 222
- Refrigerant overcharge misalignment of the outside air thermistor misalignment of the heat exchanging deicer thermistor misalignment of the liquid pipe thermistor 222
- Remote control display 222
- Supposed causes 222
- Troubleshooting 222
- Troubleshooting by indication on the remote control esien09 06 222
- When the amount of refrigerant which is calculated by using the outside air temperature heat exchanging deicer temperature and liquid pipe temperature during a check run exceeds the standard 222
- Abnormal fan motor signal circuit malfunction broken short or disconnection connector of fan motor connection cable fan inverter pc board malfunction 223
- Applicable models 223
- Detection of abnormal signal from fan motor 223
- Erq 125 250 a7w1 223
- Esien09 06 troubleshooting by indication on the remote control 223
- H 1 disconnect connector x2a and measure the following resistance 223
- H7 outdoor unit abnormal outdoor fan motor signal 223
- In case of detection of abnormal signal at starting fan motor 223
- Malfunction decision conditions 223
- Method of malfunction detection 223
- Remote control display 223
- Supposed causes 223
- Troubleshooting 223
- Troubleshooting 213 223
- Applicable models 224
- Defect of thermistor r1t for outdoor air defect of outdoor unit pc board a1p 224
- Erq 125 250 a7w1 224
- H9 outdoor unit malfunction of thermistor r1t for outdoor air 224
- Malfunction decision conditions 224
- Malfunction is detected from the temperature detected by the outdoor air thermistor 224
- Method of malfunction detection 224
- Refer to thermistor resistance temperature characteristics table on p270 224
- Remote control display 224
- Supposed causes 224
- Troubleshooting 224
- Troubleshooting by indication on the remote control esien09 06 224
- When the outside air temperature thermistor has short circuit or open circuit 224
- Applicable models 225
- Erq 125 250 a7w1 225
- Esien09 06 troubleshooting by indication on the remote control 225
- Faulty current sensor a6p a7p faulty outdoor unit pc board 225
- J2 outdoor unit current sensor malfunction 225
- Malfunction decision conditions 225
- Malfunction is detected according to the current value detected by current sensor 225
- Method of malfunction detection 225
- Remote control display 225
- Supposed causes 225
- Troubleshooting 225
- Troubleshooting 215 225
- When the current value detected by current sensor becomes 5a or lower or 40a or more during standard compressor operation 225
- Applicable models 226
- Defect of thermistor r31t r32t or r33t for outdoor unit discharge pipe defect of outdoor unit pc board a1p defect of thermistor connection 226
- Erq 125 250 a7w1 226
- J3 outdoor unit malfunction of discharge pipe thermistor r3 r31 33t 226
- Malfunction decision conditions 226
- Malfunction is detected from the temperature detected by discharge pipe temperature thermistor 226
- Method of malfunction detection 226
- Note 5 hp class r3t 8 12 hp class r31t r32t 14 16hp class r31t r32t and r33t 226
- Refer to thermistor resistance temperature characteristics table on p270 226
- Remote control display 226
- Supposed causes 226
- The alarm indicator is displayed when the fan is being used also 226
- Troubleshooting 226
- Troubleshooting by indication on the remote control esien09 06 226
- When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected 226
- J5 outdoor unit malfunction of thermistor r2t r7t for suction pipe 227
- Applicable models 228
- Defect of thermistor r4t for outdoor unit coil defect of outdoor unit pc board a1p defect of thermistor connection 228
- Erq 125 250 a7w1 228
- J6 outdoor unit malfunction of thermistor r4t for outdoor unit heat exchanger 228
- Malfunction decision conditions 228
- Malfunction is detected from the temperature detected by the heat exchanger thermistor 228
- Method of malfunction detection 228
- Refer to thermistor resistance temperature characteristics table on p270 228
- Remote control display 228
- Supposed causes 228
- Troubleshooting 228
- Troubleshooting by indication on the remote control esien09 06 228
- When a short circuit or an open circuit in the heat exchange thermistor is detected 228
- Applicable models 229
- Erq 125 250 a7w1 229
- Esien09 06 troubleshooting by indication on the remote control 229
- Faulty liquid pipe thermistor r6t faulty outdoor unit pc board defect of thermistor connection 229
- J7 outdoor unit malfunction of liquid pipe thermistor r6t 229
- Malfunction decision conditions 229
- Malfunction is detected according to the temperature detected by liquid pipe thermistor 229
- Method of malfunction detection 229
- Refer to thermistor resistance temperature characteristics table on p270 229
- Remote control display 229
- Supposed causes 229
- Troubleshooting 229
- Troubleshooting 219 229
- When the liquid pipe thermistor is short circuited or open 229
- Applicable models 230
- Erq 125 250 a7w1 230
- Faulty subcooling heat exchanger gas pipe thermistor r5t faulty outdoor unit pc board 230
- J9 outdoor unit malfunction of subcooling heat exchanger gas pipe thermistor r5t 230
- Malfunction decision conditions 230
- Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor 230
- Method of malfunction detection 230
- Refer to thermistor resistance temperature characteristics table on p270 230
- Remote control display 230
- Supposed causes 230
- Troubleshooting 230
- Troubleshooting by indication on the remote control esien09 06 230
- When the subcooling heat exchanger gas pipe thermistor is short circuited or open 230
- 1 voltage measurement point 231
- 2 refer to pressure sensor pressure voltage characteristics table on p272 231
- Applicable models 231
- Defect of high pressure sensor system connection of low pressure sensor with wrong connection defect of outdoor unit pc board 231
- Erq 125 250 a7w1 231
- Esien09 06 troubleshooting by indication on the remote control 231
- Ja outdoor unit malfunction of high pressure sensor 231
- Malfunction decision conditions 231
- Malfunction is detected from the pressure detected by the high pressure sensor 231
- Method of malfunction detection 231
- Remote control display 231
- Supposed causes 231
- Troubleshooting 231
- Troubleshooting 221 231
- When the high pressure sensor is short circuit or open circuit 231
- 1 voltage measurement point 232
- 2 refer to pressure sensor pressure voltage characteristics table on p272 232
- Applicable models 232
- Defect of low pressure sensor system connection of high pressure sensor with wrong connection defect of outdoor unit pc board 232
- Erq 125 250 a7w1 232
- Jc outdoor unit malfunction of low pressure sensor 232
- Malfunction decision conditions 232
- Malfunction is detected from pressure detected by low pressure sensor 232
- Method of malfunction detection 232
- Remote control display 232
- Supposed causes 232
- Troubleshooting 232
- Troubleshooting by indication on the remote control esien09 06 232
- When the low pressure sensor is short circuit or open circuit 232
- Actuation of fin thermal actuates above 93 c defect of inverter pc board defect of fin thermistor 233
- Applicable models 233
- Erq 125 250 a7w1 233
- Esien09 06 troubleshooting by indication on the remote control 233
- Fin temperature is detected by the thermistor of the radiation fin 233
- L4 outdoor unit malfunction of inverter radiating fin temperature rise 233
- Malfunction decision conditions 233
- Method of malfunction detection 233
- Remote control display 233
- Supposed causes 233
- Troubleshooting 233
- Troubleshooting 223 233
- When the temperature of the inverter radiation fin increases above 93 c 233
- Inverter pcb for compressor 234
- Refer to thermistor resistance temperature characteristics table on p270 234
- Applicable models 235
- Compressor inspection 235
- Defect of compressor coil disconnected defective insulation compressor start up malfunction mechanical lock defect of inverter pc board 235
- Erq 125 250 a7w1 235
- Esien09 06 troubleshooting by indication on the remote control 235
- L5 outdoor unit inverter compressor abnormal 235
- Malfunction decision conditions 235
- Malfunction is detected from current flowing in the power transistor 235
- Method of malfunction detection 235
- Remote control display 235
- Supposed causes 235
- Troubleshooting 235
- Troubleshooting 225 235
- When an excessive current flows in the power transistor instantaneous overcurrent also causes activation 235
- Troubleshooting 236
- Troubleshooting by indication on the remote control esien09 06 236
- Applicable models 237
- Compressor overload compressor coil disconnected defect of inverter pc board faulty compressor 237
- Erq 125 250 a7w1 237
- Esien09 06 troubleshooting by indication on the remote control 237
- L8 outdoor unit inverter current abnormal 237
- Malfunction decision conditions 237
- Malfunction is detected by current flowing in the power transistor 237
- Method of malfunction detection 237
- Output current check 237
- Remote control display 237
- Supposed causes 237
- Troubleshooting 237
- Troubleshooting 227 237
- When overload in the compressor is detected inverter secondary current 16 a 237
- Troubleshooting 238
- Troubleshooting by indication on the remote control esien09 06 238
- Applicable models 239
- Defect of compressor failure to open the stop valve pressure differential start faulty compressor connection defect of inverter pc board 239
- Erq 125 250 a7w1 239
- Esien09 06 troubleshooting by indication on the remote control 239
- L9 outdoor unit inverter start up error 239
- Malfunction decision conditions 239
- Method of malfunction detection 239
- Remote control display 239
- Supposed causes 239
- This malfunction code will be output if overcurrent occurs at the time of startup 239
- Troubleshooting 239
- Troubleshooting 229 239
- When the startup control is failed when an overcurrent is passed to the inverter due to the malfunction of a compressor or electrical system 239
- Troubleshooting 240
- Troubleshooting by indication on the remote control esien09 06 240
- Applicable models 241
- Lc outdoor unit malfunction of transmission between inverter and control pc board 241
- Malfunction decision conditions 241
- Method of malfunction detection 241
- Remote control display 241
- Supposed causes 241
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 242
- Caution 242
- Troubleshooting 242
- Troubleshooting by indication on the remote control esien09 06 242
- Esien09 06 troubleshooting by indication on the remote control 243
- Troubleshooting 243
- Troubleshooting 233 243
- Applicable models 244
- Erq 125 250 a7w1 244
- Imbalance in supply voltage is detected in pc board imbalance in the power supply voltage causes increased ripple of voltage of the main circuit capacitor in the inverter consequently the increased ripple is detected 244
- Malfunction decision conditions 244
- Method of malfunction detection 244
- Open phase voltage imbalance between phases defect of main circuit capacitor defect of inverter pc board defect of k2 relay in inverter pc board improper main circuit wiring 244
- P1 outdoor unit inverter over ripple protection 244
- Remote control display 244
- Supposed causes 244
- Troubleshooting 244
- Troubleshooting by indication on the remote control esien09 06 244
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status h malfunction is not decided while the unit operation is continued p1 will be displayed by pressing the inspection button when the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minutes 244
- Applicable models 245
- Defect of radiator fin temperature sensor defect of inverter pc board 245
- Erq 125 250 a7w1 245
- Esien09 06 troubleshooting by indication on the remote control 245
- Malfunction decision conditions 245
- Method of malfunction detection 245
- P4 outdoor unit malfunction of inverter radiating fin temperature rise sensor 245
- Remote control display 245
- Resistance of radiation fin thermistor is detected when the compressor is not operating 245
- Supposed causes 245
- Troubleshooting 245
- Troubleshooting 235 245
- When the resistance value of thermistor becomes a value equivalent to open or short circuited status h malfunction is not decided while the unit operation is continued p4 will be displayed by pressing the inspection button 245
- Inverter pcb for compressor 246
- Refer to thermistor resistance temperature characteristics table on p270 246
- Applicable models 247
- Erq 125 250 a7w1 247
- Esien09 06 troubleshooting by indication on the remote control 247
- Faulty or no field setting after replacing main pc board mismatching of type of pc board 247
- Malfunction decision conditions 247
- Method of malfunction detection 247
- Pj outdoor unit faulty field setting after replacing main pc board or faulty combination of pc board 247
- Remote control display 247
- Supposed causes 247
- The faulty or no field setting after replacing pc board or faulty pc board combination is detected through communications with the inverter 247
- Troubleshooting 247
- Troubleshooting 237 247
- Whether or not the field setting or the type of the pc board is correct through the communication date is judged 247
- 1 refer to thermistor resistance temperature characteristics table on p270 2 refer to pressure sensor pressure voltage characteristics table on p272 248
- Applicable models 248
- Erq 125 250 a7w1 248
- Malfunction decision conditions 248
- Method of malfunction detection 248
- Microcomputer judge and detect if the system is short of refrigerant h malfunction is not decided while the unit operation is continued 248
- Out of gas or refrigerant system clogging incorrect piping defect of pressure sensor defect of outdoor unit pc board a1p defect of thermistor r7t or r4t 248
- Remote control display 248
- Short of gas malfunction is detected by discharge pipe temperature thermistor 248
- Supposed causes 248
- Troubleshooting 248
- Troubleshooting by indication on the remote control esien09 06 248
- Uo outdoor unit low pressure drop due to refrigerant shortage or electronic expansion valve failure 248
- Applicable models 249
- Erq 125 250 a7w1 249
- Esien09 06 troubleshooting by indication on the remote control 249
- Malfunction decision conditions 249
- Method of malfunction detection 249
- Power supply reverse phase power supply open phase defect of outdoor pc board a1p 249
- Remote control display 249
- Supposed causes 249
- The phase of each phase is detected by reverse phase detection circuit and right phase or reverse phase are judged 249
- Troubleshooting 249
- Troubleshooting 239 249
- U1 reverse phase open phase 249
- When a significant phase difference is made between phases 249
- Applicable models 250
- Malfunction decision conditions 250
- Method of malfunction detection 250
- Remote control display 250
- Supposed causes 250
- U2 outdoor unit power supply insufficient or instantaneous failure 250
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 251
- Caution 251
- Esien09 06 troubleshooting by indication on the remote control 251
- Troubleshooting 251
- Troubleshooting 241 251
- Troubleshooting 252
- Troubleshooting by indication on the remote control esien09 06 252
- Applicable models 253
- Check operation is executed or not 253
- Check operation is not executed 253
- Erq 125 250 a7w1 253
- Esien09 06 troubleshooting by indication on the remote control 253
- Malfunction decision conditions 253
- Malfunction is decided when the unit starts operation without check operation 253
- Method of malfunction detection 253
- Remote control display 253
- Supposed causes 253
- Troubleshooting 253
- Troubleshooting 243 253
- U3 outdoor unit check operation not executed 253
- Applicable models 254
- Malfunction decision conditions 254
- Method of malfunction detection 254
- Remote control display 254
- Supposed causes 254
- U4 malfunction of transmission between ahus 254
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 255
- Caution 255
- Esien09 06 troubleshooting by indication on the remote control 255
- Troubleshooting 255
- Troubleshooting 245 255
- All models of ahus 256
- Applicable models 256
- In case of controlling with 2 remote control check the system using microcomputer is signal transmission between ahu and remote control main and sub is normal 256
- Malfunction decision conditions 256
- Malfunction of ahu remote control transmission connection of two main remote controls when using 2 remote controls defect of ahu pc board defect of remote control pc board malfunction of transmission caused by noise 256
- Method of malfunction detection 256
- Normal transmission does not continue for specified period 256
- Remote control display 256
- Supposed causes 256
- Troubleshooting 256
- Troubleshooting by indication on the remote control esien09 06 256
- U5 ahu malfunction of transmission between remote control and ahu 256
- All models of ahus 257
- Applicable models 257
- Detect the malfunction signal of any other ahu within the system concerned 257
- Esien09 06 troubleshooting by indication on the remote control 257
- Malfunction decision conditions 257
- Malfunction of transmission within or outside of other system malfunction of electronic expansion valve in ahu of other system defect of pc board of ahu in other system improper connection of transmission wiring between ahu and outdoor unit 257
- Method of malfunction detection 257
- Remote control display 257
- Supposed causes 257
- Troubleshooting 257
- Troubleshooting 247 257
- U9 ahu malfunction of transmission between ahu and outdoor units in the same system 257
- When the malfunction decision is made on any other ahu within the system concerned 257
- Applicable models 258
- Malfunction decision conditions 258
- Method of malfunction detection 258
- Remote control display 258
- Supposed causes 258
- Ua improper combination of ahu and outdoor units ahus and remote control 258
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 259
- Caution 259
- Esien09 06 troubleshooting by indication on the remote control 259
- The number of ahus that can be connected to a single outdoor unit system depends on the model of outdoor unit 259
- Troubleshooting 259
- Troubleshooting 249 259
- All models of ahus erq 125 250 a7w1 260
- Applicable models 260
- Improper connection of transmission wiring between ahu outdoor units and outdoor outdoor units failure to execute check operation defect of ahu pc board stop valve is left in closed 260
- Malfunction decision conditions 260
- Method of malfunction detection 260
- Note wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected ahus in the fan mode for at least an hour 260
- On check operation the number of ahus in terms of transmission is not corresponding to that of ahus that have made changes in temperature 260
- Remote control display 260
- Supposed causes 260
- The malfunction is determined as soon as the abnormality aforementioned is detected through checking the system for any erroneous connection of units on the check operation 260
- Troubleshooting 260
- Troubleshooting by indication on the remote control esien09 06 260
- Uf system is not set yet 260
- Uh malfunction of system refrigerant system address undefined 261
- Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 262
- Caution 262
- Troubleshooting 262
- Troubleshooting by indication on the remote control esien09 06 262
- Applicable models 263
- Malfunction decision conditions 263
- Method of malfunction detection 263
- Operation lamp blinks 263
- Remote control display 263
- Supposed causes 263
- Troubleshooting op unified on off controller 263
- Caution be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred 264
- Troubleshooting 264
- Troubleshooting op unified on off controller esien09 06 264
- 1 turn off the power supply 2 measure the resistance between vcc and each phase of u v w and gnd and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected furthermore to use a multiple meter for measurement connect the probe of negative pole to vcc and that of positive pole to gnd 265
- Check no 1 265
- Check no 2 265
- Check on connector of fan motor power supply cable 1 turn off the power supply measure the resistance between phases of u v w at the motor side connectors three core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is disconnected 265
- Esien09 06 troubleshooting op unified on off controller 265
- Troubleshooting 255 265
- Check 3 check for causes of rise in high pressure 266
- Referring to the fault tree analysis fta shown below probe the faulty points 266
- Troubleshooting 266
- Troubleshooting op unified on off controller esien09 06 266
- Check 4 check for causes of drop in low pressure 267
- Esien09 06 troubleshooting op unified on off controller 267
- Referring to the fault tree analysis fta shown below probe the faulty points 267
- Troubleshooting 257 267
- Part 9 appendix 269
- Appendix 270
- Erq 125 a7w1b 270
- Outdoor unit 270
- Piping diagrams 270
- Piping diagrams esien09 06 270
- Appendix 261 271
- Erq 200 a7w1b 271
- Esien09 06 piping diagrams 271
- Appendix 272
- Erq 250 a7w1b 272
- Piping diagrams esien09 06 272
- Appendix 263 273
- Erq 125 a7w1b 273
- Esien09 06 wiring diagrams for reference 273
- Outdoor unit 273
- Wiring diagrams for reference 273
- Appendix 274
- Connector terminal protective earth screw 274
- Erq 200 a7w1b 274
- Esien09 06 pdf 272 2 16 2010 4 42 59 pm 274
- Field wiring terminal strip indication of parts outside switchbox 274
- Notes 1 this wiring diagram only applies to the outdoor units 2 3 4 when using the option adapter refer to the installation manual 5 refer to the installation manual for connection wiring to indoor outdoor transmission f1 f2 and on how to use bs1 bs5 and ds1 ds2 switch 6 do not operate the unit by short circuit protection device s1ph 7 blk black red red blu blue wht white pnk pink ylw yellow brn brown gry grey grn green org orange 274
- Wiring diagrams for reference esien09 06 274
- Appendix 265 275
- Erq 250 a7w1b 275
- Esien09 06 pdf 273 2 16 2010 4 42 59 pm 275
- Esien09 06 wiring diagrams for reference 275
- Field wiring terminal strip connector terminal protective earth screw 275
- Notes 1 this wiring diagram only applies to the outdoor unit 2 3 4 when using the option adapter refer to the installation manual 5 refer to the installation manual for connection wiring to indoor outdoor transmission f1 f2 and on how to use bs1 bs5 and ds1 ds2 switch 6 do not operate the unit by short circuit protection device s1ph 7 blk black red red blu blue wht white pnk pink ylw yellow brn brown gry grey grn green org orange 275
- Appendix 276
- Erq 125 200 250 a7w1b 276
- Esien09 06 pdf 274 2 16 2010 4 43 00 pm 276
- Field wiring 276
- Wiring diagrams for reference esien09 06 276
- Erq 125 200 a7w1b 277
- List of electrical and functional parts 277
- Outdoor unit 277
- Erq 250 a7w1b 278
- Appendix 269 279
- Esien09 06 option list 279
- Option list 279
- Ahu for air suction r1t for liquid pipe r2t for gas pipe r3t 280
- Appendix 280
- Outdoor unit for fin thermistor r1t 280
- Outdoor unit for outdoor air r1t for coil r2t for suction pipe r4t for receiver gas pipe r5t for receiver outlet liquid pipe r6t 280
- Thermistor resistance temperature characteristics 280
- Thermistor resistance temperature characteristics esien09 06 280
- Appendix 271 281
- Esien09 06 thermistor resistance temperature characteristics 281
- Outdoor unit thermistors for discharge pipe r3t r3 281
- Pressure sensor 282
- Method of checking the inverter s power transistors and diode modules 283
- Diode module checking 284
- Power module checking 284
- When using the analog type of multiple tester make measurement in resistance measurement mode in the x1k ω range 284
- When using the digital type of multiple tester make measurement in diode check mode 284
- Part 10 precautions for new refrigerant r 410a 285
- Precautions for new refrigerant r 410a 76 285
- About refrigerant r 410a 286
- Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 286
- H 1 non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points h 2 quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points h 3 the design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 286
- Outline 286
- Precautions for new refrigerant r 410a 286
- Esien09 06 precautions for new refrigerant r 410a 287
- Precautions for new refrigerant r 410a 277 287
- Thermodynamic characteristic of r 410a 287
- Refrigerant cylinders 288
- As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 289
- Copper tube material and thickness 289
- O soft annealed h hard drawn 289
- R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 289
- Service tools 289
- Tool compatibility 289
- Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 290
- Differences change of dimension a 290
- Flaring tool 290
- Specifications dimension a 290
- Unit mm 290
- Can not be used 293
- Drawings flow charts 297
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