Daikin FDMQ-R Series, Service Manual

Page 1: ...Service Manual Inverter Pair Duct Connected Type FDMQ R Series SiUS071735EA Applied Models z Inverter Pair Heat Pump...

Page 2: ...ir Duct Connected Type FDMQ R Series zHeat Pump Indoor Unit FDMQ09RVJU FDMQ12RVJU FDMQ15RVJU FDMQ18RVJU FDMQ24RVJU Outdoor Unit RX09RMVJU RX09RMVJU9 RX12RMVJU RX12RMVJU9 RX15RMVJU RX15RMVJUA RX18RMVJU...

Page 3: ...ions and Control 15 1 Main Functions 16 1 1 Temperature Control 16 1 2 Frequency Principle 16 1 3 Fan Speed Control for Indoor Unit 18 1 4 Program Dry Operation 19 1 5 Clock and Calendar Setting With...

Page 4: ...ote Controller Thermistor Abnormality 71 4 9 Signal Transmission Error Between Indoor Unit and Remote Controller 72 4 10 Signal Transmission Error Between MAIN Remote Controller and SUB Remote Control...

Page 5: ...107 5 11 Outdoor Fan System Check 108 5 12 Main Circuit Short Check 108 5 13 Power Module Check 110 Part 7 Trial Operation and Field Settings 112 1 Pump Down Operation 113 2 Forced Cooling Operation...

Page 6: ...n is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers This manual is for the person in charge of maintenance and inspection Warning Do not store equip...

Page 7: ...exclusive use with the R 32 R 410A refrigerant The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle or equipment failure Do not mix air...

Page 8: ...riate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and...

Page 9: ...he refrigerant gas leaks be sure to locate the leaking point and repair it before charging the refrigerant After charging the refrigerant make sure that there is no leak If the leaking point cannot be...

Page 10: ...generation fire or an electrical shock If the installation platform or frame has corroded replace it A corroded installation platform or frame may cause the unit to fall resulting in injury Check the...

Page 11: ...ion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note A Note provides...

Page 12: ...SiUS071735EA 1 List of Functions Part 1 List of Functions 1 Functions 2...

Page 13: ...3 D airflow NIGHT SET mode COMFORT AIRFLOW operation Off Timer turns unit off after set time z Switchable fan speed 3 steps z z Worry Free Reliability Durability Auto restart after power failure z z...

Page 14: ...SiUS071735EA 3 Specifications Part 2 Specifications 1 Specifications 4...

Page 15: ...fm m min 343 290 240 9 7 8 2 6 8 343 290 240 9 7 8 2 6 8 343 290 240 9 7 8 2 6 8 343 290 240 9 7 8 2 6 8 External Static Pressure 5 inH2O 0 20 0 60 0 12 0 20 0 60 0 12 Pa 50 150 30 50 150 30 Sound Pre...

Page 16: ...332 275 11 1 9 4 7 8 392 332 275 11 1 9 4 7 8 392 332 275 11 1 9 4 7 8 392 332 275 11 1 9 4 7 8 External Static Pressure 5 inH2O 0 20 0 60 0 12 0 20 0 60 0 12 Pa 50 150 30 50 150 30 Sound Pressure Le...

Page 17: ...360 14 6 12 4 10 2 516 438 360 14 6 12 4 10 2 675 572 473 19 1 16 2 13 4 675 572 473 19 1 16 2 13 4 External Static Pressure 5 inH2O 0 20 0 60 0 20 0 20 0 60 0 20 Pa 50 150 50 50 150 50 Sound Pressure...

Page 18: ...3 19 1 16 2 13 4 675 572 473 19 1 16 2 13 4 798 678 558 22 6 19 2 15 8 798 678 558 22 6 19 2 15 8 External Static Pressure 5 inH2O 0 20 0 60 0 20 0 20 0 60 0 20 Pa 50 150 50 50 150 50 Sound Pressure L...

Page 19: ...Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 9 1 1 FDMQ09 12 15 18 24RVJU 9 2 Wired Remote Controller 11 2 1 BRC1E73 11 3 Wireless Remote Controller Receiver 12 3 1 BRC082A43 12 4 Outd...

Page 20: ...r 4 X25A Connector for drain pump motor 5 X27A Connector for terminal block for power supply 6 X28A Connector for power supply wiring option 7 X30A Connector for terminal block for wired remote contro...

Page 21: ...A2P 1 X3A Connector for control PCB A1P 2 X6A Connector for reactor 3 X8A Connector for indoor fan motor 4 X10A Connector for terminal block for power supply 5 F2U Fuse 5 A 250 V 6 F4U Fuse 6 3 A 250...

Page 22: ...ler SiUS071735EA 11 Printed Circuit Board Connector Wiring Diagram 2 Wired Remote Controller 2 1 BRC1E73 Wired Remote Controller PCB 1 P1 P2 Terminal for indoor unit 2 R4T Room temperature thermistor...

Page 23: ...Diagram 12 3 Wireless Remote Controller Receiver 3 1 BRC082A43 Wireless Remote Controller PCB 1 SS1 MAIN SUB setting switch Refer to page 122 for details 2 SS2 Address setting switch Refer to page 12...

Page 24: ...Connector for overload protector 4 S71 Connector for DC fan motor 5 S80 Connector for four way valve coil 6 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 7 H...

Page 25: ...for overload protector 3 S70 Connector for DC fan motor 4 S80 Connector for four way valve coil 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 HL1 HN1 S Co...

Page 26: ...roller BRC1E73 22 1 7 Drain Pump Control 25 1 8 Hot Start Control In Heating Operation Only 27 1 9 Other Functions 28 2 Control Specification 29 2 1 Mode Hierarchy 29 2 2 Frequency Control 30 2 3 Cont...

Page 27: ...by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature The target frequency is adapted by addit...

Page 28: ...ng Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequ...

Page 29: ...t protection purposes The system may turn off the fan when the room temperature is satisfied It is normal for a delay to occur when changing the fan speed If the Auto is selected for the fan speed the...

Page 30: ...ature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor temperature at start up...

Page 31: ...wn the button causes the number to change continuously Press buttons to select Clock Calendar on the main menu screen Press Menu OK button to display the clock calendar screen Select Month with button...

Page 32: ...e the minute with buttons Holding down the button causes the number to change continuously Press Menu OK button The confirmation screen will appear The date can be set between January 1 2015 and Decem...

Page 33: ...tion is disabled for this time period __ Indicates that the temperature setpoint and setback temperature setpoint for this time period is not specified The last active setpoint will be utilized Settin...

Page 34: ...3 Press buttons to select Yes on the confirmation screen Pressing Menu OK button enters the daily patterns in the schedule and takes you back to the main menu screen R24074 1 The schedule screen will...

Page 35: ...ure setpoint and setback temperature setpoint for this time period is not specified The last active setpoint will be utilized Indicates that the setback function is disabled for this time period 5 A m...

Page 36: ...e screen Press buttons to select Enable Disable on the schedule screen Press Menu OK button to display the enable disable screen Press buttons to select Enable or Disable on the enable disable screen...

Page 37: ...n turns ON again after 5 seconds 4 After A3 is determined and the unit comes to an abnormal stop the thermostat will remain OFF even if the float switch turns ON again 1 7 3 If the Float Switch is OFF...

Page 38: ...At startup with thermostat ON or after the completion of defrosting in heating operation the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity Details R2...

Page 39: ...ower supply is restored to the conditions prior to the power failure Note It takes 3 minutes to restart the operation because the 3 minute standby function is activated 1 9 3 Emergency Operation Switc...

Page 40: ...installation and servicing Details Heat Pump Model Note Unless specified otherwise dry operation command is regarded as cooling operation Air conditioner control mode Forced operation mode Forced coo...

Page 41: ...cut freeze up protection defrost control 3 Determine lower limit frequency The maximum value is set as an lower limit frequency among the frequency lower limits of the following functions Four way va...

Page 42: ...Frequency control is carried out only when the frequency drops For limiting lower limit Frequency control is carried out only when the frequency rises 4 Upper and lower limit of frequency by PI contro...

Page 43: ...emperature 85 C 185 F OFF condition Discharge pipe temperature 2 C 35 6 F Radiation fin temperature 90 C 194 F Control B ON condition Discharge pipe temperature 10 C 50 0 F Radiation fin temperature 8...

Page 44: ...The lower limit of frequency keeps A Hz for B seconds for any of the conditions above When the outdoor temperature is above C in heating the frequency decreases depending on the outdoor temperature 2...

Page 45: ...further Details 09 12 class 15 18 24 class C F C F A 110 230 0 110 230 0 B 103 217 4 103 217 4 C 98 208 4 101 5 214 7 D 93 199 4 100 212 0 E 88 190 4 95 203 0 Zone Control Stop zone When the temperatu...

Page 46: ...d Dropping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep z...

Page 47: ...rotection control starts when any of the following conditions is satisfied z The indoor heat exchanger temperature remains at A or lower for 1 minute z The accumulated time that the indoor heat exchan...

Page 48: ...35 5 60 140 0 60 140 0 60 140 0 B 55 131 0 54 129 2 55 131 0 54 129 2 C 52 125 6 51 123 8 52 125 6 51 123 8 D 50 122 0 49 120 2 50 122 0 49 120 2 E 45 113 0 44 111 2 45 113 0 44 111 2 Zone Control Sto...

Page 49: ...w the rotation speed of the outdoor fan is reduced When the pressure difference is high the rotation speed of the outdoor fan is controlled as well as normal operation 5 Fan speed control during force...

Page 50: ...control of accumulated time have passed since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is made with the outdoor heat exchanger temper...

Page 51: ...discharge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Details The following are the examples of electronic expansion valve control which function in each...

Page 52: ...rge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 2 11 7 Discharg...

Page 53: ...tronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pip...

Page 54: ...temperature thermistor 2 12 2 Detection of Overcurrent and Overload Outline An excessive output current is detected and the OL temperature is observed to protect the compressor Details If the OL compr...

Page 55: ...SiUS071735EA Remote Controller 44 Part 5 Remote Controller 1 Wired Remote Controller BRC1E73 45 2 Wireless Remote Controller BRC082A43 51...

Page 56: ...te Controller 1 Wired Remote Controller BRC1E73 3 Menu OK button 8 On Off button 10 Cancel button 9 Operation lamp 11 LCD with backlight 4 Up button 5 Down button 6 Right button 7 Left button 1 Operat...

Page 57: ...light will be illuminated for approximately 30 seconds by pressing any button If two remote controllers are used to control a single indoor unit only the controller accessed first will have backlight...

Page 58: ...ault Detailed and Simple displays can be selected in the main menu 10 Changeover controlled by the master indoor unit 9 Under centralized control 4 Stand by for Defrost Hot start The airflow direction...

Page 59: ...mple 2 Fan speed 3 Setpoint 1 Operation mode 11 Setback 14 Selectable Display Item 4 Stand by for Defrost Hot start Depending on the field settings while the indoor unit is stopped OFF may be displaye...

Page 60: ...is limited Displayed when another indoor unit on the system has the authority to change the operation mode between cool and heat Displayed when an energy recovery ventilator is connected Ventilation M...

Page 61: ...unit model does not include oscillating louvers this item will not be displayed Displayed if the clock is set If the clock is not set will be displayed 12 hour time format is displayed by default Sel...

Page 62: ...s Remote Controller BRC082A43 R25006 7 9 12 10 11 13 14 15 8 1 3 4 5 2 6 DOWN FAN UP ON OFF M H L hr hr TEST MODE TIMER RESERVE CANCEL DOWN UP TEST FAN TIME TEMP ON OFF M H L hr hr TEST F F The situat...

Page 63: ...PERATURE SETTING BUTTON Use this button for SETTING TEMPERATURE Operates with the front cover of the remote controller closed PROGRAMMING TIMER BUTTON Use this button for programming START and or STOP...

Page 64: ...roller 72 4 10 Signal Transmission Error Between MAIN Remote Controller and SUB Remote Controller 73 4 11 Low voltage Detection or Over voltage Detection 74 4 12 Signal Transmission Error Between Indo...

Page 65: ...onic Expansion Valve Check 102 5 5 Four Way Valve Performance Check 103 5 6 Inverter Unit Refrigerant System Check 103 5 7 Inverter Analyzer Check 104 5 8 Rotation Pulse Check on the Outdoor Unit PCB...

Page 66: ...lure of 2 to 10 cycles stops air conditioner operation Operation lamp OFF Check the outdoor temperature Heating cooling operations are not available when the outdoor temperature is out of the operatio...

Page 67: ...In either case conduct the diagnostic procedure described in the following pages With wired remote controller BRC1E73 With wireless remote controller BRC082A43 In case of wireless remote controller a...

Page 68: ...nheit 1 3 Main Menu Airflow Direction Individual Airflow Direction Ventilation Schedule Off Timer Celsius Fahrenheit Filter Auto Clean Maintenance Information Configuration Current Settings Clock Cale...

Page 69: ...n Operation lamp 2 Error Code A1 Contact Info 0123 456 7890 Indoor Model 000 Outdoor Model 000 If an error occurs either one of the following items will flash in the basic screen The Operation lamp wi...

Page 70: ...ter cleaning sign time z Others Following codes can be checked z Error codes z Indoor model code Service data can be obtained z Error code history z Temperature data of various sections Service settin...

Page 71: ...he left 0 upper digit indication of the error code blinks Step Action UP button DOWN button R15408 If you hear Then 3 short beeps Follow all steps below 1 short beep Follow steps 3 and 4 Continue the...

Page 72: ...Press OPERATION MODE SELECTOR button The right 0 lower digit indication of the error code blinks Step Action UP button DOWN button R15411 UP DOWN 4 5 6 7 8 9 U P L J F H E C A 0 If you hear Then 2 sho...

Page 73: ...ION MODE SELECTOR button to return to the normal mode If you do not press any button for 1 minute the remote controller automatically returns to the normal mode Step Action UP button DOWN button R1541...

Page 74: ...ontroller thermistor abnormality 71 U5 Signal transmission error between indoor unit and remote controller 72 U8 Signal transmission error between MAIN remote controller and SUB remote controller 73 O...

Page 75: ...mputer or externally and usually requires more voltage for erasure than the common 5 volts used in logic circuits It functions like non volatile RAM but writing to EEPROM is slower than writing to RAM...

Page 76: ...er switch before connecting or disconnecting connectors or parts may be damaged Connect the drain pump Replace the indoor unit PCB control PCB Replace the drain pump There is a drain system abnormalit...

Page 77: ...Defective fan motor No fuse continuity Troubleshooting Check No 02 Refer to P 101 Connect the connector correctly Turn OFF the power supply and wait for 10 minutes NO Turn ON the power supply while t...

Page 78: ...istance between the pins is equal to or lower than 1 Replace the fan motor Replace the fan PCB A2P The HAP lamp on the indoor unit control PCB is blinking while the HAP lamp on the fan PCB is not blin...

Page 79: ...connecting connectors or parts may be damaged Check for the indoor unit control PCB A1P and the fan PCB A2P Connect the connector correctly NO YES YES Is the connector X3A on the fan PCB connected cor...

Page 80: ...ectric expansion value in humidifier s Defective indoor unit PCB Troubleshooting Note The system continues to operate with the thermostat OFF even while the error code is displayed YES YES NO NO Cauti...

Page 81: ...follows C4 Indoor heat exchanger thermistor 1 liquid pipe R2T C5 Indoor heat exchanger thermistor 2 R3T C9 Room temperature thermistor R1T Note When replacing the defective thermistor s replace the th...

Page 82: ...unning Supposed Causes Defective room temperature thermistor in the wired remote controller Defective wired remote controller PCB External factor such as noise Troubleshooting Note To delete the recor...

Page 83: ...Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Are both remote controllers set to MAIN Do the service monitors of all the indoor uni...

Page 84: ...en using 2 remote controllers Defective remote controller PCB Troubleshooting Note For the way to change MAIN SUB setting of remote controllers refer to pages 120 and 122 Turn the power off and then b...

Page 85: ...the model The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage detection An over voltage signal is fed from the over voltage detection circuit to th...

Page 86: ...S YES YES Reconnect the harness Check the power supply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power a...

Page 87: ...Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage out of specification Reduction of...

Page 88: ...d the outdoor unit Replace the outdoor unit PCB main PCB Replace the connection wires between the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there an...

Page 89: ...eck again YES YES NO NO Connect the indoor outdoor units correctly YES YES YES YES NO NO NO Blink R24372 Is the combination of indoor outdoor units correct Do the service monitors of all the indoor un...

Page 90: ...detected Supposed Causes Defective outdoor unit PCB Noise Momentary drop of voltage Momentary power failure Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnec...

Page 91: ...wn Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe thermistor Disconnection of connector...

Page 92: ...the electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Replace the four way valve or the coil Replace the outdoor unit PCB main...

Page 93: ...the harnesses U V and W R21067 Caution NO YES YES NO NO YES NO YES Check No 15 Check with the inverter analyzer Turn off the power and reconnect the harnesses Turn on the power again and restart the s...

Page 94: ...fan motor Foreign matter stuck in the fan Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 106 R20416 Caution YES YES NO YES NO NO YES NO Turn on the power Rotate...

Page 95: ...Refer to P 107 Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the syst...

Page 96: ...ondition continues over 10 minutes after operating for 5 minutes Cooling Dry A B 5 C A B 9 F Heating B A 5 C B A 9 F A Room thermistor temperature B Indoor heat exchanger temperature If the error repe...

Page 97: ...dust clogged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R20405 Refrigerant shortage Water mixed Stop...

Page 98: ...rmistor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 0...

Page 99: ...he outdoor heat exchanger thermistor exceeds the limit Error Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rise above 57 5 61 C 135 5 141 8 F depending on the mod...

Page 100: ...or unit PCB main PCB Replace the electronic expansion valve or the coil Replace the outdoor unit PCB main PCB Change the installation location or direction Clean the outdoor heat exchanger Check the i...

Page 101: ...ses Abnormal operation due to air intrusion Defective discharge pipe thermistor Troubleshooting Check No 01 Refer to P 100 YES R23655 NO OK NG Caution Replace the outdoor unit Replace both the dischar...

Page 102: ...e before compressor start up is below 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or d...

Page 103: ...h the position detection circuit Error Decision Conditions If the error repeats the system is shut down Reset condition Continuous run for about 11 minutes without any other error Supposed Causes Powe...

Page 104: ...Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical components or compressor harnesses connect...

Page 105: ...04 V or less with the power on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Defec...

Page 106: ...mperature Replace the defective thermistor s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temp...

Page 107: ...roubleshooting Check No 17 Refer to P 107 Check No 19 Refer to P 108 A B C C F C F C F 09 12 class 82 179 6 65 149 70 158 15 18 24 class 90 194 64 147 2 81 177 8 Caution WARNING To cool the electrical...

Page 108: ...he outdoor unit PCB Troubleshooting Check No 17 Refer to P 107 Check No 19 Refer to P 108 Note Refer to Silicone Grease on Power Transistor Diode Bridge on page 125 for details A B C F C F 09 12 class...

Page 109: ...rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is sh...

Page 110: ...the same error occurs Check the power supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary drop of power supply...

Page 111: ...move the PCB from the control PCB to measure the resistance When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance Thermistor temp...

Page 112: ...5 3 Power Supply Waveforms Check Check No 11 Measure the power supply waveform between No 1 and No 2 on the terminal block and check the waveform disturbance Check if the power supply waveform is a si...

Page 113: ...not generate a latching sound in step 2 disconnect the connector and check the continuity using a multimeter 4 Check the continuity between the pins 5 1 5 2 5 3 5 4 between the pins 6 1 6 2 6 3 and 6...

Page 114: ...ng Dry Defrost Not energized Heating energized Replace the outdoor unit PCB main PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 S80 voltage...

Page 115: ...re to turn off the power Step 2 Install an inverter analyzer instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before...

Page 116: ...C1E73 1 Turn the power on 2 Set FAN operation using the remote controller 3 Press and hold Cancel button for 4 seconds or longer Test operation will stop automatically after about 30 minutes To stop t...

Page 117: ...trol voltage between the pins 4 3 is 15 VDC 4 Check that the rotation command voltage between the pins 4 2 is 0 6 5 VDC 5 Keep operation off and power off Connect the connector S70 or S71 6 Check whet...

Page 118: ...dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor temp...

Page 119: ...ring to the table below If the resistance is or less than 1 k short circuit occurs on the main circuit 09 12 class R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system R...

Page 120: ...Check SiUS071735EA 109 Service Diagnosis 15 18 24 class R25105 1 2 3 4 Multimeter...

Page 121: ...on on the connector Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter Evaluate the measurement results re...

Page 122: ...Check SiUS071735EA 111 Service Diagnosis 15 18 24 class R20704 W V U DC_P1 DC_N1...

Page 123: ...Cooling Operation 114 3 Trial Operation 115 4 Field Settings 118 4 1 How to Change the Field Settings 118 4 2 Overview of the Field Settings 121 4 3 MAIN SUB and Address Setting for Wireless Remote C...

Page 124: ...the liquid stop valve and the gas stop valve 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop...

Page 125: ...menu is displayed 3 Select in the service settings menu and press Menu OK button Basic screen returns and Test Operation is displayed at the bottom 4 Press On Off button within 10 seconds and the for...

Page 126: ...all functions and parts are working properly To protect the air conditioner restart operation is disabled for 3 minutes after the system has been turned off 4 After trial operation is complete set th...

Page 127: ...mperature setpoint and room temperature In the case of above mentioned procedures 3 and 4 in reverse order test operation can start as well 5 Press and hold Cancel button for 4 seconds or longer in th...

Page 128: ...ling heating function Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated Water leakage Draining line is properly installed Water leakage Does the power supply vol...

Page 129: ...ote controller Wired Remote Controller BRC1E73 a Unit No b First code No c Second code No d Mode 1 Press and hold Cancel button for 4 seconds or longer Service settings menu is displayed 2 Select in t...

Page 130: ...d When SECOND CODE NO is displayed as there is no function 6 Press Menu OK button Setting confirmation screen is displayed 7 Select and press Menu OK button Setting details are determined and field se...

Page 131: ...t 4 seconds to enter the Field Set mode 2 Select the desired Mode No with MODE button 3 Press button and select the First code No 4 Press button and select the Second code No 5 Press RESERVE button to...

Page 132: ...ter cleaning sign interval used to change filter cleaning display interval according to filter contamination Longlife filter Light Approx 2 500 hrs Heavy Approx 1 250 hrs Standard filter Approx 200 hr...

Page 133: ...remote controller with 1 indoor unit change the MAIN SUB switch of the signal receiver PCB Signal Receiver PCB Setting MAIN SUB switch Set the MAIN SUB setting switch SS1 on the signal receiver PCB t...

Page 134: ...the setting 5 Hold down TEST button to quit the field setting mode and return to the normal display Multiple Settings or When the indoor unit is controlled by an outside controller central remote cont...

Page 135: ...low 20 C 4 F restarting once the temperature rises above this level 1 Remove the top plate of the outdoor unit 09 12 class 3 screws 15 18 24 class 6 screws 2 Remove the front plate 09 12 class 4 screw...

Page 136: ...bridge Details 1 Wipe off the old silicone grease completely 2 Apply the silicone grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor dio...

Page 137: ...SiUS071735EA Appendix 126 Part 8 Appendix 1 Piping Diagrams 127 1 1 Indoor Unit 127 1 2 Outdoor Unit 128 2 Wiring Diagrams 130 2 1 Indoor Unit 130 2 2 Outdoor Unit 131 3 Operation Limit 133...

Page 138: ...Piping Diagrams SiUS071735EA 127 Appendix 1 Piping Diagrams 1 1 Indoor Unit FDMQ09 12 15 18 24RVJU C 4D112974A...

Page 139: ...4 CuT FIELD PIPING 3 8 CuT GAS STOP VALVE WITH SERVICE PORT DISCHARGE PIPE THERMISTOR FOUR WAY VALVE ON HEATING 3D092207C OUTDOOR UNIT HEAT EXCHANGER 9 32 CuT 9 32 CuT 9 32 CuT 1 2 CuT 9 32 CuT CAPIL...

Page 140: ...Piping Diagrams SiUS071735EA 129 Appendix RX24RMVJU A 3D092249A...

Page 141: ...35EA Wiring Diagrams Appendix 130 2 Wiring Diagrams 2 1 Indoor Unit FDMQ09 12 15 18 24RVJU Note A1P Control PCB A2P Indoor fan PCB Refer to Part 3 for Printed Circuit Board Connector Wiring Diagram 3D...

Page 142: ...Wiring Diagrams SiUS071735EA 131 Appendix 2 2 Outdoor Unit RX09 12RMVJU 9 Note PCB1 Main PCB Refer to Part 3 for Printed Circuit Board Connector Wiring Diagram 3D112531A...

Page 143: ...ER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS V U W t t t MS M Y1S Q1L Y1E M1C M1F GROUND N 5 Z3C N 4 Z2C FU3 30A FU1 3 15A FU2 3 15A Z1C N 4 MS 3 R1T OUTDOOR R2T CONDENSER R3T DISCHARGE IN CASE OF H...

Page 144: ...t such as computers Never use it in a residence or office the space where there is a human Indoor fan tap should be fixed to high Cutting jumper 6 J6 on the circuit board extend the operation range to...

Page 145: ...Revision History Month Year Version Revised contents 01 2018 SiUS071735E First edition 06 2020 SiUS071735EA Model addition RX09 12RMVJU9 RX15 24RMVJUA RX18RMVJU9 A...

Page 146: ...Use of unauthorized parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion z Read the user s manual care...