R410a split series room air conditioner (14 pages)
Summary of Contents for Daikin RMXS-L Series
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SiUS181305E Service Manual Multi-Split 8-Zone Heat Pump Systems RMXS-L Series [Applied Models] Inverter Multi : Heat Pump...
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SiUS181305E Multi-Split 8-Zone Heat Pump Systems RMXS-L Series Heat Pump Outdoor Unit RMXS48LVJU Branch Provider (BP) Unit BPMKS048A2U BPMKS049A3U Indoor Unit CTXS07LVJU FDXS09LVJU FFQ09LVJU CTXS07JVJU FDXS12LVJU FFQ12LVJU CTXS09HVJU CDXS15LVJU FFQ15LVJU CTXS12HVJU CDXS18LVJU FFQ18LVJU FTXS15LVJU CDXS24LVJU FTXS18LVJU FTXS24LVJU The removal procedure for each model is separately bound. Refer to page 239 for the booklet number of applicable model.
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SiUS181305E Safety Considerations ..............vii Part 1 List of Functions ..............1 1. Functions.....................2 1.1 Outdoor Unit ....................2 1.2 Indoor Unit....................3 Part 2 Specifications................ 5 1. Specifications ....................6 1.1 Outdoor Unit ....................6 1.2 Branch Provider (BP) Unit ................6 1.3 Indoor Unit....................
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SiUS181305E Part 5 Function ................39 1. Operation Mode ..................41 2. Basic Control.....................42 2.1 Normal Operation ..................42 2.2 Compressor PI Control................42 2.3 Electronic Expansion Valve PI Control............43 2.4 Cooling Operation Fan Control..............44 3. Special Control..................45 3.1 Startup Control ................... 45 3.2 Oil Return Operation ..................
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SiUS181305E 8.2 Thermostat Sensor in Remote Controller........... 84 8.3 Freeze Prevention Control ................. 86 8.4 Hot Start Control (In Heating Operation Only)..........86 Part 6 Test Operation and Field Settings ........87 1. Test Operation ..................88 1.1 Procedure and Outline ................88 1.2 Operation when Power is Turned On ............
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SiUS181305E 5.7 Signal Transmission Error between Remote Controller and Indoor Unit.. 173 5.8 Signal Transmission Error between MAIN Remote Controller and SUB Remote Controller................174 5.9 Field Setting Abnormality ................. 175 6. Troubleshooting for Branch Provider (BP) Unit........176 6.1 Electronic Expansion Valve Abnormality..........176 6.2 Branch Provider (BP) Unit PCB Abnormality..........
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SiUS181305E 7.33 Check for Outdoor Unit................220 8. Thermistor Resistance / Temperature Characteristics......224 9. Pressure Sensor ..................226 10.Method of Replacing Inverter’s Power Transistors Modules....227 Part 9 Appendix ................229 1. Piping Diagrams..................230 1.1 Outdoor Unit ..................... 230 1.2 Branch Provider (BP) Unit ................ 231 1.3 Indoor Unit....................
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Safety Considerations 1. Safety Considerations Read these SAFETY CONSIDERATIONS carefully before • Do not start or stop the air conditioner or heat pump repairing air conditioners and heat pumps. After completing operation by plugging or unplugging the power cord. repairs, check if the unit operates properly. All electrical Plugging or unplugging he power cord to operate or repairs and work must be carried out by qualified personnel disconnect the equipment could cause an electrical...
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Safety Considerations • Do not touch the refrigerant pipes during and Inspections after Repairs immediately after operation for any repair work as the refrigerant pipes may be hot or cold, depending WARNING on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other •...
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SiUS181305E Part 1 List of Functions 1. Functions.....................2 1.1 Outdoor Unit ....................2 1.2 Indoor Unit....................3 List of Functions...
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SiUS181305E Functions 1. Functions Outdoor Unit Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — Function Clean –5 Operation limit for cooling (°CDB) Photocatalytic deodorizing filter — ~ 46 Air-purifying filter with photocatalytic Operation limit for cooling (°FDB) —...
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Functions SiUS181305E Indoor Unit Category Functions Basic Function Inverter (with inverter power control) Operation limit for cooling (°CDB) — — — — — — Operation limit for cooling (°FDB) — — — — — —...
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SiUS181305E Part 2 Specifications 1. Specifications ....................6 1.1 Outdoor Unit ....................6 1.2 Branch Provider (BP) Unit ................6 1.3 Indoor Unit....................7 Specifications...
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SiUS181305E Specifications 1. Specifications Outdoor Unit 60 Hz, 208 - 230 V Model RMXS48LVJU Cooling Capacity Btu/h 48,000 Heating Capacity Btu/h 54,000 Casing Color Ivory White Heat Exchanger Cross Fin Coil Type Hermetically Sealed Scroll Type Piston Displacement 791.5 Number of Revolutions r.p.m...
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Specifications SiUS181305E Indoor Unit CTXS, FTXS Series 60 Hz, 208 - 230 V CTXS07LVJU CTXS07JVJU Model Cooling Heating Cooling Heating Rated Capacity 7 kBtu/h Class 7 kBtu/h Class Front Panel Color White White 332 (9.4) 350 (9.9) 388 (11.0) 400 (11.3) 261 (7.4) 290 (8.2) 335 (9.5)
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SiUS181305E Specifications 60 Hz, 208 - 230 V FTXS15LVJU FTXS18LVJU Model Cooling Heating Cooling Heating Rated Capacity 15 kBtu/h Class 18 kBtu/h Class Front Panel Color White White 568 (16.1) 593 (16.8) 583 (16.5) 625 (17.7) 477 (13.5) 505 (14.3) 484 (13.7) 526 (14.9) Airflow Rate...
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Specifications SiUS181305E CDXS, FDXS Series 60 Hz, 208 - 230 V FDXS09LVJU FDXS12LVJU Model Cooling Heating Cooling Heating Rated Capacity 9 kBtu/h Class 12 kBtu/h Class External Static Pressure inAq (Pa) 0.12 (30) 0.12 (30) 305 (8.6) 305 (8.6) 305 (8.6) 305 (8.6) 280 (7.9) 280 (7.9)
SiUS181305E Indoor Unit 3. Indoor Unit CTXS07LVJU Control PCB 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Indoor heat exchanger thermistor 5) S41 Connector for swing motors 6) S46 Connector for display PCB 7) S47...
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Indoor Unit SiUS181305E Signal Receiver 1) S48 Connector for control PCB 3P210728-1 Display PCB 1) S49 Connector for control PCB 2) SW1 Forced operation ON/OFF button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for INTELLIGENT EYE (green) 6) RTH1 (R1T)
SiUS181305E Indoor Unit CTXS07JVJU, CTXS09/12HVJU Control PCB 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S8 Connector for swing motor (vertical blades) 4) S21 Connector for centralized control (HA) 5) S26 Connector for buzzer PCB 6) S28 Connector for signal receiver PCB 7) S32...
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Indoor Unit SiUS181305E Signal Receiver 1) S29 Connector for control PCB 2) SW1 (S1W) Forced operation ON/OFF button 2P099167-1 Buzzer PCB 1) S27 Connector for control PCB 2) S38 Connector for display PCB 3) RTH1 (R1T) Room temperature thermistor RTH1 2P099167-1 Display PCB 1) S37...
SiUS181305E Indoor Unit FTXS15/18/24LVJU Control PCB 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Indoor heat exchanger thermistor 5) S41 Connector for swing motors 6) S46 Connector for display PCB 7) S47...
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Indoor Unit SiUS181305E Signal Receiver 1) S48 Connector for control PCB 3P224121-1 Display PCB 1) S49 Connector for control PCB 2) SW1 Forced operation ON/OFF button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for INTELLIGENT EYE (green) 6) RTH1 (R1T)
SiUS181305E Indoor Unit FDXS09/12LVJU, CDXS15/18/24LVJU Control PCB 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor (Hall IC) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S32 Connector for indoor heat exchanger thermistor 6) H1, H2, H3 Connector for terminal board 7) FG (GND)
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Indoor Unit SiUS181305E Display PCB 1) S1 Connector for control PCB 2) SW1 (S1W) Forced operation ON/OFF button 3) LED2 (H2P) LED for timer (yellow) 4) LED3 (H3P) LED for operation (green) 5) RTH1 (R1T) Room temperature thermistor LED3 LED2 RTH1 2P084375-1 LED 1 does not function.
Refrigerant Circuit SiUS181305E 1. Refrigerant Circuit Outdoor Unit No. in Symbol Name Major Function diagram The compressor is operated on frequencies between 36 Hz and 195 Hz by using the Compressor motor inverter. (31 steps) Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Fan motor speed by using the inverter.
SiUS181305E Refrigerant Circuit Branch Provider (BP) Unit No. in Symbol Name Major Function diagram Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of operating room is called (for operating room) EVU. Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called (for non-operating room) EVT.
Operation Mode SiUS181305E 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control •...
SiUS181305E Basic Control 2. Basic Control Normal Operation <Cooling Operation> Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
SiUS181305E Basic Control Cooling Operation Fan Control In cooling operation with low outdoor temperature, cooling operation fan control provides the adequate amount of circulating air with liquid pressure secured by high pressure control using the outdoor fan. When the outdoor temperature is 20°C (68°F), the fan operates in STEP 7 or higher. When the outdoor temperature is ...
Special Control SiUS181305E 3. Special Control Startup Control Startup control equalizes the pressure in the front and back of the compressor before the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor.
SiUS181305E Special Control Oil Return Operation 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. 3.2.1 Oil Return Operation in Cooling Operation <Conditions to start>...
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Special Control SiUS181305E 3.2.2 Oil Return Operation in Heating Operation <Conditions to start> Oil return operation in heating operation is started referring to the following conditions: Integrated amount of displaced oil Timer setting (Make this setting so as to start the oil return operation when the initial cumulative operating time reaches 2 hours after power supply is turned ON and then every 8 hours.) The integrated amount of displaced oil is derived from Tc, Te, and the compressor load.
SiUS181305E Special Control Defrosting Operation The defrosting operation is performed to solve frost on the outdoor unit heat exchanger when heating, in order to recover heating capacity. <Conditions to start> The defrosting operation is started referring to the following conditions: ...
Special Control SiUS181305E 3.4.1 Pump-down Residual Operation in Cooling Operation Pump-down residual operation Actuator Step 1 Step 2 Compressor 124 Hz Full load 52 Hz Full load Outdoor fan Fan control Fan control Four-way valve (Y1S) Main electronic expansion valve (Y1E) 480 pulse 240 pulse Subcooling electronic expansion valve (Y3E)
SiUS181305E Protection Control 4. Protection Control High Pressure Protection Control Outline High pressure protection control is used to prevent the activation of protection devices due to an abnormal increase of high pressure and to protect compressors against the temporary increase of high pressure.
Protection Control SiUS181305E Low Pressure Protection Control Outline Low pressure protection control is used to protect compressors against the temporary decrease of low pressure. <Cooling Operation> Low pressure not limited Pe: Low pressure sensor detection value < 0.25 MPa (84 ftAq) >...
SiUS181305E Protection Control Discharge Pipe Temperature Protection Control Outline Discharge pipe temperature protection control protects the compressor internal temperature against a malfunction or temporary increase of discharge pipe temperature. <Compressor> Discharge pipe temperature protection control not limited HTdi > 115˚C (239˚F) Tp >...
Protection Control SiUS181305E Inverter Protection Control Outline Inverter overcurrent protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, temporary inverter overcurrent, or radiation fin temperature increase. <Inverter overcurrent protection control> Not limited Inverter current ≤ 23.8 A &...
SiUS181305E Protection Control Freeze-up Protection Control Outline According to the freeze prevention status sent from the BP unit, the compressor output frequency is regulated to decrease compressor capacity in order to prevent the indoor heat exchanger from freezing. Detail Zones are divided based on the freeze prevention status signal sent from the BP unit (indoor unit), and the freeze prevention control prevents freezing of the indoor unit.
Protection Control SiUS181305E Dew Condensation Prevention Control Outline According to the dew condensation prevention status sent from the BP unit, the compressor output frequency is regulated to decrease compressor capacity in order to prevent the indoor unit from dew condensation. Detail Zones are divided based on the dew condensation prevention status signal sent from the BP unit (indoor unit), and the dew condensation prevention control prevents dew condensation of the...
SiUS181305E Other Control 5. Other Control Demand Control In order to lower power consumption, the capacity of the outdoor unit is forcibly lowered using the Demand 1 Setting. To operate the unit with this mode, additional setting of Constant Demand Setting is necessary. <Demand 1 setting>...
Branch Provider (BP) Unit Control SiUS181305E 6. Branch Provider (BP) Unit Control Branch Provider (BP) Unit Command Conversion 1. D (room thermistor temperature target temperature) signals from BP units are converted to a capacity up / down signal. D signals from BP units are used as the capacity up / down signal in frequency commands (excludes during POWERFUL operation).
SiUS181305E Branch Provider (BP) Unit Control Branch Provider (BP) Unit Electronic Expansion Valve Control This function provides instructions regarding the absolute flow rate, relative flow rate and fully closing from the outdoor unit to the BP unit in order to ensure outdoor unit compressor safety and optimum refrigerating cycle of the system.
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Branch Provider (BP) Unit Control SiUS181305E 6.2.3 Full Closing of Electronic Expansion Valves Outline The electronic expansion valves are initialized when the power is turned on. Detail The following processes are conducted. 1. Conducts P1 pulses close when power is turned on, and sets current opening to 0 pulse (fully closing process).
SiUS181305E Branch Provider (BP) Unit Control SH Control in Cooling Operation Outline This function ensures appropriate refrigerant distribution when many indoor units are operating in cooling operation. Detail The heat exchanger temperatures and gas pipe temperatures of operating indoor units are detected by the gas pipe thermistors, and the flow rates of the electronic expansion valve are corrected so as to adjust the difference between the heat exchanger temperature and gas pipe temperature of each indoor unit (hereafter referred to as SH) close to the target values.
Branch Provider (BP) Unit Control SiUS181305E Note: 1. In SkyAir models, the indoor units are equipped with distribution capillary tubes; as a result, the heat exchangers may superheat even when the condition is met. 2. In SkyAir models, the heat exchanger intermediate position is provided on the liquid connection pipe side;...
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series 7. Function of CTXS, FTXS, CDXS, FDXS Series Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller ...
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E Airflow Direction Control (CTXS/FTXS Series Only) Power-Airflow The large louver sends a large volume of air downward to the floor and provides an optimum control in cooling, dry, and heating operation. Dual Louvers <Cooling / Dry>...
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SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series 3-D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform airconditioning of the entire room. This function is effective for starting the air conditioner. When the horizontal swing and vertical swing are both set to automatic operation, the airflow becomes 3-D airflow.
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E Fan Speed Control for Indoor Unit Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature.
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series Note: 1. During POWERFUL operation, the fan rotates at H tap + 50 ~ 90 rpm (depending on the model). 2. The fan stops during defrost operation. COMFORT CTXS-L, FTXS-L Series The fan speed is automatically controlled within the following steps. AIRFLOW <Cooling>...
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E Automatic Operation Outline Automatic Cooling / Heating Function When the automatic operation is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up.
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Detail Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition ...
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E NIGHT SET Mode Outline When the OFF timer is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. Detail The NIGHT SET Mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in cooling, or lowers it slightly in heating.
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series HOME LEAVE Operation Outline CTXS-J, CTXS-H Series HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote controller.
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Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E How to Set the Temperature and Airflow Rate When using HOME LEAVE operation for the first time, set the temperature and airflow rate for HOME LEAVE operation. Record your preferred temperature and airflow rate. Initial setting Selectable range Temperature...
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series 7.10 INTELLIGENT EYE Operation Outline CTXS, FTXS Series This function detects the existence of humans in the room with a motion sensor (INTELLIGENT EYE) and reduces the capacity when there is nobody in the room in order to save electricity. Detail 1.
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E 7.11 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Detail When POWERFUL button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.
SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series 7.12 Clock Setting ARC452 Series The clock can be set by taking the following steps: 1. Press the CLOCK button. is displayed and MON and blink. or button to set the clock to the current day of the week. 2.
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E 7.13 WEEKLY TIMER Operation Outline CTXS-L, FTXS-L series Up to 4 timer settings can be saved for each day of the week (up to 28 settings in total). The 3 items: ON/OFF, temperature, and time can be set. Detail ...
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SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 Program 4...
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Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E Press to select the desired time. • The time can be set between 0:00 and 23:50 in 10 minute intervals. • To return to the ON/OFF TIMER mode setting, press • Go to STEP when setting the OFF TIMER.
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SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series Copy mode • A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 Program 4 Monday...
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Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E Confirming a reservation • The reservation can be confirmed. Setting Displays Normal display Confirmation display Press • The day of the week and the reservation number of current day will be displayed. Press to select the day of the week and the reservation number to be confirmed.
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SiUS181305E Function of CTXS, FTXS, CDXS, FDXS Series To delete reservations The individual reservation Press • The day of the week and the reservation number will be displayed. Press to select the day of the week and the reservation number to be deleted. Press •...
Function of CTXS, FTXS, CDXS, FDXS Series SiUS181305E 7.14 Other Functions 7.14.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and the airflow is either stopped or made very weak thereby carrying out comfortable heating of the room.
SiUS181305E Function of FFQ Series 8. Function of FFQ Series Drain Pump Control 8.1.1 When the Float Switch is Tripped While the Cooling Thermostat is ON: The remote controller displays A3 and the indoor unit stops. Thermostat (running) Float switch Drain pump 5 min.
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Function of FFQ Series SiUS181305E 8.1.3 When the Float Switch is Tripped During Heating Operation: The remote controller displays A3 and the indoor unit stops. Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. (R16094) During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.
SiUS181305E Function of FFQ Series Thermostat Sensor in Remote Controller Outline Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is utilized.) Cooling If there is a significant difference in the set temperature and the suction temperature, fine...
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Function of FFQ Series SiUS181305E Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the indoor unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature.
SiUS181305E Function of FFQ Series Freeze Prevention Control When the temperature detected by liquid pipe thermistor (R2T) of the indoor heat exchanger drops too low, the unit enters freeze prevention control in accordance with the following conditions, and is also set in accordance with the conditions given below. Conditions for starting: Temperature is –1°C (30.2°F) or less for total of 40 min., or temperature is –5°C (23°F) or less for total of 10 min.
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SiUS181305E Part 6 Test Operation and Field Settings 1. Test Operation ..................86 1.1 Procedure and Outline ................86 1.2 Operation when Power is Turned On ............88 1.3 Branch Provider (BP) Unit ................89 1.4 RA Indoor Unit: CTXS, FTXS, CDXS, FDXS Series ........91 1.5 SA Indoor Unit: FFQ Series................
SiUS181305E Test Operation 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check Work Prior to Turn Power Supply On Is the power supply single-phase 208 ~ 230 V, 60 Hz? Check the below items.
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Test Operation SiUS181305E 1.1.3 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code U3 is displayed.) ⎧ The test operation is started automatically. ⎫...
SiUS181305E Test Operation 1.1.4 Confirmation on Normal Operation Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24°CDB (75.2°FDB) or higher, the unit can not be operated with heating operation. See the installation manual attached.) ...
Test Operation SiUS181305E Branch Provider (BP) Unit 1.3.1 Judging and reprogramming in case of redundant BP addresses The BP unit of this system is provided with specific addresses in its production stage. These addresses are for various controls. If by any chance (on 3 out of 260000 units) these addresses are redundant, the system may get in trouble.
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SiUS181305E Test Operation Example of DIP switch (DS2) settings on the BP unit's PCB DS2-1 DS2-2 DS2-3 DS2-4 BP unit 1 BP unit 2 BP unit 3 DS1 ~ 4 : Factory setting is OFF. The BP unit 1 through 3 show the first through third unit, respectively. The order of these BP units is flexible.
Test Operation SiUS181305E RA Indoor Unit: CTXS, FTXS, CDXS, FDXS Series Outline 1. Measure the power supply voltage and make sure that it falls within the specified range. 2. Test operation should be carried out in either cooling or heating operation. In cooling operation, select the lowest programmable temperature (18°C (64°F));...
SiUS181305E Test Operation SA Indoor Unit: FFQ Series 1.5.1 Checkpoints To carry out a test operation, check the following: Check that the temperature setting of the remote controller is at the lowest level in cooling operation or use test operation mode. ...
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Test Operation SiUS181305E Step Action Remote controller How to check airflow direction Push the Menu/OK button to enter the Main Menu. Use the buttons to select Airflow Direction and push the Menu/OK button. (R18829) Check that the airflow direction is actuated according to the setting and push the Menu/OK button.
SiUS181305E Field Settings 2. Field Settings Outdoor Unit 2.1.1 Setting Mode and Monitor Mode Outline The following 3 modes can be changed over with the button switches on the service PCB and you can find the present mode by the status of the H1P indicator. H1P H3P H5P H7P H2P H4P H6P (MODE)
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Field Settings SiUS181305E Setting Mode 1 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 setting).
SiUS181305E Field Settings Setting Mode 2 Press the MODE (BS1) button for 5 Setting item Description seconds and enter the setting mode Cool / heat unified Sets address for cool / heat unified operation. address Low noise / demand Address for low noise / demand operation address Used to conduct test operation without making changes to Test operation...
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Field Settings SiUS181305E Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave Factory setting k h h h h h h Address k h h h h h k Binary number Cool / heat unified address (6 digits)
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SiUS181305E Field Settings Setting item display C/H selection Setting condition display MODE TEST Low noise Demand Setting item Master Slave Factory setting k h h h h h k Level 1 (outdoor fan with 6 step or lower) k h h h h k h Setting of low noise Level 2 (outdoor fan with 5 step or lower) level...
Field Settings SiUS181305E Monitor Mode LED display Press the MODE (BS1) button and Check item Data display enter the monitor mode. h h h h h h See the note Various setting below. h h h h h k Cool / heat unified address h h h h k h Low noise / demand address h h h h k k...
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SiUS181305E Field Settings Push the BS2 (SET button) and match with the LEDs No. 1 - 15, push the BS3 (RETURN button), and confirm the data for each setting. Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
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Field Settings SiUS181305E (1) Set Cool/Heat Separately for Each Outdoor Unit System by Indoor Unit Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set the dip switch DS1-1 of the outdoor unit PCB (A2P) to IN (factory setting). ...
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SiUS181305E Field Settings (2) Set Cool/Heat Separately for Each Outdoor Unit System by Cool/Heat Selector Connect the cool/heat selector (option) to the terminals A, B, C on the outdoor unit PCB (A4P). It does not matter whether or not there is outdoor - outdoor unit wiring. ...
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Field Settings SiUS181305E 2.1.3 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2 ~ 3 dB. When the low noise operation is automatically carried out at night (The external control adaptor for outdoor unit is not required) 1.
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SiUS181305E Field Settings Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Condition Content Demand...
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Field Settings SiUS181305E Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. The system enters setting mode 1 and the H1P goes off. In setting mode 1, the H6P (In low noise operation) and the H7P (In demand control) keep lighting.
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SiUS181305E Field Settings 2.1.4 Setting of Refrigerant Additional Charging Operation When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid side, make sure to charge the remaining quantity of refrigerant using this procedure.
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Field Settings SiUS181305E 2.1.6 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. <Operating procedure> (1) In setting mode 2 with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming mode) to ON.
SiUS181305E Field Settings RA Indoor Unit: CTXS, FTXS, CDXS, FDXS Series 2.2.1 Model Type Setting ARC452A21, ARC452A23 The remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the model type. ...
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Field Settings SiUS181305E 2.2.3 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different address. Both the indoor unit PCB and the wireless remote controller need alteration.
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SiUS181305E Field Settings Cut the jumper JA on PCB. CDXS/FDXS Series ADDRESS : JA EXIST (R19089) Caution Replace the PCB if you accidentally cut a wrong jumper. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them. Wireless Remote (1) Remove the cover and take it off.
Field Settings SiUS181305E SA Indoor Unit: FFQ Series 2.3.1 How to Change the Field Settings Outline If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. BRC1E72 (R18831) a Unit No.
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SiUS181305E Field Settings Step Action Remote controller Push the Menu/OK button to display the confirmation screen. Use the buttons to select Yes and push the Menu/OK button. (R18834) When multiple setting changes are needed, repeat steps 3 to 7. Push the Cancel button 2 times to return to basic screen.
Field Settings SiUS181305E 2.3.2 Overview of the Field Settings Mode First Second Code No. (Note 2) Code Description of setting (Note 1) Filter Approx. Approx. Longlife cleaning 2,500 1,250 — — filter sign interval hrs. hrs. The remote The return air controller thermistor is Only the...
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SiUS181305E Field Settings 2.3.3 MAIN / SUB Setting when Using 2 Wired Remote Controllers Outline The MAIN / SUB setting is necessary when 1 indoor unit is controlled by 2 remote controllers. When you use 2 remote controllers (control panel and separate remote controller), set one to MAIN and the other to SUB.
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Field Settings SiUS181305E 2.3.4 Address and MAIN / SUB Setting for Wireless Remote Controller Outline If several wireless remote controller units are used together in the same room (including the case where both group control and individual remote controller control are used together), be sure to set the addresses for the receiver and wireless remote controller.
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SiUS181305E Field Settings Wireless Remote 1. Hold down the FILTER SIGN RESET ( ) button and the INSPECTION/TEST button at the same time for at least 4 seconds to enter the field setting mode. (SETTING is indicated on the Controller display).
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Field Settings SiUS181305E After Setting Stick the unit No. label at the decoration panel air discharge outlet as well as on the back of the wireless remote controller. Wireless remote controller Unit No. label Decoration panel (R12961) Note: Set the unit No. of the receiver and the wireless remote controller to be the same. If the settings differ, the signal from the remote controller cannot be received.
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SiUS181305E Field Settings Test Operation and Field Settings...
Refer to the following pages for detail. 1 POWERFUL operation P.73 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
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3 HOME LEAVE operation 5 Clock setting P.70 P.74 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
Refer to the following pages for detail. 1 POWERFUL operation P.73 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
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P.75 4 ECONO operation 7 Clock setting P.69 P.74 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
Refer to the following pages for detail. 1 POWERFUL operation P.73 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
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Refer to the following pages for detail. 2 ECONO operation P.69 3 Clock setting P.74 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from DISTRIBUTOR’S PAGE: DISTRIBUTOR’S PAGE Product Information Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
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FFQ09/12/15/18LVJU SiUS181305E 1. Operation mode selector button 7. Left button Press this button to select the operation Used to highlight the next items on the mode of your preference. left-hand side. * Available modes vary with the indoor unit Each screen is scrolled in the left-hand model.
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SiUS181305E FFQ09/12/15/18LVJU Liquid Crystal Display Three types of liquid crystal display (LCD) are available. The standard display is set by default. Detailed and Simple displays can be selected in the main menu. The displayed contents of the screen vary with the operation mode of the indoor unit model. (The following display will appear when the indoor unit is in Auto mode.) Standard display 10.Changeover controlled by...
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FFQ09/12/15/18LVJU SiUS181305E Simple Display Simple Display 1.Operation mode 1.Operation mode 14.Selectable Display 14.Selectable Display item item 3.Setpoint display 3.Setpoint display 11.Setback 11.Setback 2.Fan speed 2.Fan speed 4.Stand by for Defrost/ 4.Stand by for Defrost/ <Simple display example> <Simple display example> Hot start Hot start Common precautions for all display modes...
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SiUS181305E FFQ09/12/15/18LVJU 1. Operation mode Error: Push Menu button Warning: Push Menu button Used to display the current operation Displayed if an error or warning is detected. mode: Cool, Heat, Vent, Fan, Dry or Auto. In Auto mode, the actual operation mode (Cool or Heat) will be also displayed.
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FFQ09/12/15/18LVJU SiUS181305E 11.Setback SETBACK The setback icon flashes when the unit is turned on under the setback control. 12.Airflow Direction Displayed when the airflow direction and swing are set. If the connected indoor unit model does not include oscillating louvers this item will not be displayed.
SiUS181305E FFQ09/12/15/18LVJU <BRC7E830> Wireless Remote Controller (R18863) (R17873) PROGRAMMING TIMER BUTTON DISPLAY (SIGNAL TRANSMISSION) Use this button for programming START This lights up when a signal is being and/or STOP time. (Operates with the front transmitted. over of the remote controller opened.) DISPLAY 12 TIMER MODE START/STOP BUTTON (OPERATION MODE)
SiUS181305E Troubleshooting with LED 1. Troubleshooting with LED Outdoor Unit 1.1.1 Main PCB (A1P) The main PCB (A1P) has a green LED (HAP). When the microcomputer works in order, the LED blinks. (R13068) 1.1.2 Service PCB (A2P) The service PCB (A2P) has orange LEDs (H1P ~ H7P). You can identify the error code with these LEDs in monitor mode.
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Troubleshooting with LED SiUS181305E Error code indication in monitor mode <Monitor mode> Error Press the MODE (BS1) button and Contents of malfunction code enter the monitor mode. Outdoor unit PCB abnormality Detection of DIII-Net Actuation of high pressure switch High pressure switch activated (S1PH) Actuation of low pressure sensor Abnormal Pe Compressor motor lock...
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SiUS181305E Troubleshooting with LED k : ON h : OFF l : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Error code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 1 1 1...
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Troubleshooting with LED SiUS181305E <Monitor mode> Error Press the MODE (BS1) button and Contents of malfunction code enter the monitor mode. High voltage of capacitor in main Imbalance of inverter power supply voltage inverter circuit Radiation fin thermistor abnormality Faulty thermistor of inverter fin Low pressure drop due to refrigerant Refrigerant shortage alarm shortage or electronic expansion valve...
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SiUS181305E Troubleshooting with LED k : ON h : OFF l : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Error code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 1 1 Display 1 of...
Troubleshooting with LED SiUS181305E Branch Provider (BP) Unit : ON, : OFF, : Blinks, —: No matter Green : Blinks in normal condition Red : OFF in normal condition BP Unit LED Indication Description Green Normal condition Defective electronic expansion valve or anti-icing control in non-operating indoor unit Defective thermistor Freeze-up protection control in operating indoor unit or standby indoor unit...
SiUS181305E Troubleshooting with LED Indoor Unit Operation Lamp The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor malfunctions. 2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages.
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Service Check Function SiUS181305E 2. Service Check Function CTXS, FTXS, CDXS, FDXS Series 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature Check Method 1 display screen. Timer cancel button < ARC452 Series > (R14460) 2.
SiUS181305E Service Check Function , TEMP , MODE) at the same time to enter the diagnosis mode. Check Method 2 1. Press the 3 buttons (TEMP (R14550) The left-side number blinks. (R9430) or button and change the number until you hear the two consecutive 2.
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Service Check Function SiUS181305E or button and change the number until you hear the long beep. 5. Press the TEMP (R14547) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not.
SiUS181305E Service Check Function FFQ Series 2.2.1 BRC1E72 Relations Between Modes <Main Menu> • Airflow Direction • Quick Start • Schedule • Off Timer • Celsius / Fahrenheit • Maintenance Information • Configuration • Current Settings • Clock & Calendar Main Menu screen •...
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Service Check Function SiUS181305E Service Check The following message is displayed on the screen when a error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Function Screen Operation lamp Menu/OK button (R18817) (1) Check if it is error or warning.
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SiUS181305E Service Check Function 2.2.2 BRC7E830 Relations The following modes can be selected by using the INSPECTION/TEST button on the remote Between Modes controller. Press the INSPECTION/TEST button for more than 4 seconds. Service data can be obtained. Indoor unit settings can be made. ...
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Service Check Function SiUS181305E Step Action Press the UP or DOWN button and change the UNIT No. until the receiver of the remote controller starts to beep. UP button DOWN button (R15408) If you hear... Then... 3 short beeps Follow all steps below. 1 short beep Follow steps 3 and 4.
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SiUS181305E Service Check Function Step Action Press the UP or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep. DOWN UP button DOWN button (R15411) If you hear... Then... 2 short beeps The upper digit matches.
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Service Check Function SiUS181305E Step Action Press the UP or DOWN button and change the error code lower digit until the receiver of the remote controller generates a continuous beep. DOWN UP button DOWN button (R15413) Press the MODE button to return to the normal mode. If you do not press any button for 1 minutes, the remote controller automatically returns to the normal mode.
SiUS181305E Error Codes and Description 3. Error Codes and Description Error code Description Reference page RA Indoor SA Indoor BP Unit Outdoor Unit Unit Unit Indoor Indoor unit PCB abnormality — — Unit Drain level control system abnormality — — —...
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Error Codes and Description SiUS181305E Error code Description Reference page RA Indoor SA Indoor BP Unit Outdoor Unit Unit Unit Outdoor Radiation fin temperature rise — — — Unit Inverter compressor abnormality — — — Inverter current abnormality — — —...
SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series 4. Troubleshooting for CTXS, FTXS, CDXS, FDXS Series Indoor Unit PCB Abnormality Error Code Method of Error The system checks if the circuit works properly within the microcomputer of the indoor unit. Detection Error Decision The system cannot set the internal settings.
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Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the combination of the indoor and outdoor unit. Match the compatible models.
SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series Freeze-up Protection Control or Heating Peak-cut Control Error Code Freeze-up protection control Method of Error Detection During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor. ...
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Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the air passage. Refer to P.165 Is there any short circuit? Provide sufficient air passage.
SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series Fan Motor or Related Abnormality 4.3.1 DC Motor (CTXS/FTXS Series) Error Code Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine Detection abnormal fan motor operation.
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Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the power supply Check No.02 voltage. Refer to P.166 Is the voltage fluctuation Correct the power...
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SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series 4.3.2 AC Motor (CDXS/FDXS Series) Error code Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine Detection abnormal fan motor operation. Error Decision The detected rotation speed does not reach the demanded rotation speed of the target tap, and is Conditions less than 50% of the maximum fan motor rotation speed.
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Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.04 Refer to P.166 Check the power supply voltage. Is the voltage fluctuation Correct the power supply.
SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series Thermistor or Related Abnormality C4, C9 Error Code Method of Error The temperatures detected by the thermistors are used to determine thermistor errors. Detection Error Decision The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Conditions ...
Troubleshooting for CTXS, FTXS, CDXS, FDXS Series SiUS181305E Check for CTXS, FTXS, CDXS, FDXS Series 4.5.1 Thermistor Resistance Check Check No.01 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The data is for reference purpose only. Temperature (°C / °F) Resistance (k) –20 / –4...
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SiUS181305E Troubleshooting for CTXS, FTXS, CDXS, FDXS Series 4.5.2 Fan Motor Connector Check Check No.02 CTXS/FTXS Series 1. Check the connection of connector. 2. Check motor power supply voltage output (pins 4 - 7). 3. Check motor control voltage (pins 4 - 3). 4.
Troubleshooting for FFQ Series SiUS181305E 5. Troubleshooting for FFQ Series Indoor Unit PCB Abnormality Error Code Method of Error The system checks the data from EEPROM. Detection Error Decision When data could not be correctly received from the EEPROM EEPROM : Type of nonvolatile memory. Maintains memory contents even when the power supply Conditions is turned off.
SiUS181305E Troubleshooting for FFQ Series Drain Level Control System Abnormality Error Code Method of Error The float switch detects error. Detection Error Decision When the water level reaches its upper limit and when the float switch turns OFF Conditions Defective drain pump Supposed ...
Troubleshooting for FFQ Series SiUS181305E Fan Motor or Related Abnormality Error Code Method of Error The signal from the fan motor detects abnormal fan speed. Detection Error Decision The fan rotations are not detected while the output voltage to the fan is at its maximum. Conditions ...
SiUS181305E Troubleshooting for FFQ Series Drain System Abnormality Error Code Method of Error Water leakage is detected based on the float switch ON/OFF changeover while the compressor is not operating. Detection Error Decision When the float switch changes from ON to OFF while the compressor is OFF Conditions ...
Troubleshooting for FFQ Series SiUS181305E Thermistor or Related Abnormality C4, C5, C9 Error Code Method of Error The temperatures detected by the thermistors determine thermistor errors. Detection Error Decision The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Conditions ...
SiUS181305E Troubleshooting for FFQ Series Remote Controller Thermistor Abnormality Error Code Method of Error Even if remote controller thermistor is malfunctioning, the system can operate with the system Detection thermistor. Malfunction detection is carried out by the temperature detected by the remote controller thermistor.
Troubleshooting for FFQ Series SiUS181305E Signal Transmission Error between Remote Controller and Indoor Unit Error Code Method of Error In case of controlling with 2 remote controllers, check the system using microcomputer if signal Detection transmission between indoor unit and remote controller (main and sub) is normal. Error Decision Normal transmission does not continue for specified period.
SiUS181305E Troubleshooting for FFQ Series Signal Transmission Error between MAIN Remote Controller and SUB Remote Controller Error Code Method of Error In case of controlling with 2 remote controllers, check the system using microcomputer if signal Detection transmission between indoor unit and remote controller (main and sub) is normal. Error Decision Normal transmission does not continue for specified period.
Troubleshooting for FFQ Series SiUS181305E Field Setting Abnormality Error Code Method of Error Detection Error Decision Incorrect field setting Conditions Defective indoor unit PCB Supposed Defective outdoor unit PCB Causes Defective power supply PCB Indoor-outdoor, indoor-indoor unit transmission wiring ...
SiUS181305E Troubleshooting for Branch Provider (BP) Unit 6. Troubleshooting for Branch Provider (BP) Unit Electronic Expansion Valve Abnormality Error Code Method of Error Detection by checking continuity and lack of connector Detection Error Decision No voltage applied when turning the power supply on Conditions ...
Troubleshooting for Branch Provider (BP) Unit SiUS181305E Branch Provider (BP) Unit PCB Abnormality Error Code Method of Error Check data from EEPROM Detection Error Decision When data could not be correctly received from the EEPROM Conditions EEPROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
SiUS181305E Troubleshooting for Branch Provider (BP) Unit Branch Provider (BP) Liquid or Gas Pipe Thermistor Abnormality Error Code Method of Error Detection Error Decision When the BP liquid or gas pipe thermistor has short circuit or open circuit Conditions Defective BP liquid or gas pipe thermistor Supposed ...
Troubleshooting for Branch Provider (BP) Unit SiUS181305E Signal transmission Error between Indoor Unit and Branch Provider (BP) Unit Error Code Method of Error The data received from the BP unit in signal transmission is checked whether it is normal. Detection Error Decision When the data sent from the BP unit cannot be received normally, or when the content of the data Conditions...
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SiUS181305E Troubleshooting for Branch Provider (BP) Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.11 Push and hold the RESET Refer to P.182 button on the outdoor unit PCB for 5 seconds Does the malfunction occur...
Troubleshooting for Branch Provider (BP) Unit SiUS181305E Transmission Error between Outdoor Unit and Branch Provider (BP) Unit Error Code Method of Error Transmission error is detected when the outdoor unit could not received the data from BP unit Detection correctly. Error Decision When the data from BP unit could not be correctly received continuously for 10 minutes Conditions...
SiUS181305E Troubleshooting for Branch Provider (BP) Unit Check for Branch Provider (BP) Unit 6.6.1 Power Supply Waveforms Check Check No.11 Measure the power supply waveform between the pins 1 and 3 on the terminal board, and check the waveform disturbance. ...
Troubleshooting for Outdoor Unit SiUS181305E 7. Troubleshooting for Outdoor Unit Outdoor Unit PCB Abnormality Error Code Method of Error Check data from EEPROM Detection Error Decision When data could not be correctly received from the EEPROM Conditions EEPROM: Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
SiUS181305E Troubleshooting for Outdoor Unit Actuation of High Pressure Switch Error Code Method of Error Abnormality is detected when the contact of the high pressure switch opens. Detection Error Decision When the high pressure switch activation count reaches the number specific to the operation mode Conditions (Reference) Operating pressure: 4.0 MPa (1338 ftAq)
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Troubleshooting for Outdoor Unit SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.30 Check for the points shown below. (1) Is the stop valve open? Refer to P.220 (2) Is the high pressure switch connector properly connected to the main PCB (A1P)? (3) Does the high pressure switch have continuity? Are the...
SiUS181305E Troubleshooting for Outdoor Unit Actuation of Low Pressure Sensor Error Code Method of Error Detection by the pressure value with the low pressure sensor Detection Error Decision When the low pressure is dropped under specific pressure Conditions Operating pressure: 0.07 MPa (23 ftAq) ...
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Troubleshooting for Outdoor Unit SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.31 Refer to P.221 Open the stop valve. Is the stop valve open? (1) Mount a pressure gauge on the low pressure service port.
SiUS181305E Troubleshooting for Outdoor Unit Compressor Motor Lock Error Code Method of Error The position signal is taken from UVW line, and the malfunction is detected when any abnormality Detection is observed in the phase-current waveform. Error Decision When the compressor motor does not start up even in forced startup mode Conditions ...
Troubleshooting for Outdoor Unit SiUS181305E Outdoor Fan Motor Abnormality Error Code Method of Error The error is determined according to the fan speed detected by Hall IC when the fan motor runs. Detection When the fan runs with speed less than a specified one for 6 seconds or more when the fan Error Decision Conditions motor running conditions are met...
SiUS181305E Troubleshooting for Outdoor Unit Moving Part of Electronic Expansion Valve (Y1E, Y3E) Abnormality Error Code Method of Error System checks if the connector is disconnected, and the detection is based on the continuity of Detection electronic expansion valve coil. Error Decision No current is detected in the common (COM +) when power supply is ON.
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Troubleshooting for Outdoor Unit SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn power supply off, and turn power supply on again. Could be other causes than Return to normal? malfunction (for example, noise etc.).
SiUS181305E Troubleshooting for Outdoor Unit Discharge Pipe Temperature Abnormality Error Code Method of Error The temperature detected by the discharge pipe thermistor determines the error. Detection When the discharge pipe temperature rises to an abnormally high level (135 °C (275°F) and Error Decision Conditions above)
Troubleshooting for Outdoor Unit SiUS181305E Refrigerant Overcharged Error Code Method of Error Excessive charging of refrigerant is detected during check operation by using outdoor temperature, Detection outdoor heat exchanger temperature, and liquid pipe temperature. Error Decision When the amount of refrigerant, which is calculated during check operation by using outdoor Conditions temperature, outdoor heat exchanger temperature, and liquid pipe temperature, exceeds the standard.
SiUS181305E Troubleshooting for Outdoor Unit Outdoor Temperature Thermistor (R1T) Abnormality Error Code Method of Error The temperature detected by the outdoor temperature thermistor determines the error. Detection Error Decision When the outdoor temperature thermistor has short circuit or open circuit Conditions ...
Troubleshooting for Outdoor Unit SiUS181305E 7.10 Discharge Pipe Thermistor (R2T) Abnormality Error Code Method of Error The temperature detected by discharge pipe thermistor determines the error. Detection Error Decision When a short circuit or an open circuit in the discharge pipe thermistor is detected Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.11 Suction Pipe Thermistor (R3T, R5T) Abnormality Error Code Method of Error The temperature detected by the suction pipe thermistor determines the error. Detection Error Decision When a short circuit or an open circuit in the suction pipe thermistor is detected Conditions ...
Troubleshooting for Outdoor Unit SiUS181305E 7.12 Outdoor Heat Exchanger Thermistor (R4T) Abnormality Error Code Method of Error The temperature detected by the outdoor heat exchanger thermistor determines the error. Detection Error Decision When a short circuit or an open circuit in the outdoor heat exchanger thermistor is detected Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality Error Code Method of Error The temperature detected by the outdoor liquid pipe thermistor determines the error. Detection Error Decision When a short circuit or an open circuit in the outdoor liquid pipe thermistor is detected Conditions ...
Troubleshooting for Outdoor Unit SiUS181305E 7.14 Subcooling Heat Exchanger Gas Pipe Thermistor (R6T) Abnormality Error Code Method of Error The temperature detected by subcooling heat exchanger gas pipe thermistor determines the error. Detection Error Decision When the subcooling heat exchanger gas pipe thermistor is short circuited or open Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.15 High Pressure Sensor Abnormality Error Code Method of Error The pressure detected by high pressure sensor determines the error. Detection Error Decision When the high pressure sensor is short circuit or open circuit Conditions ...
Troubleshooting for Outdoor Unit SiUS181305E 7.16 Low Pressure Sensor Abnormality Error Code Method of Error The pressure detected by low pressure sensor determines the error. Detection Error Decision When the low pressure sensor is short circuit or open circuit Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.17 Outdoor Unit PCB Abnormality Error Code The error is detected based on the current value during waveform output before starting Method of Error Detection compressor. The error is detected based on the value from current sensor during synchronous operation when starting the unit.
Troubleshooting for Outdoor Unit SiUS181305E 7.18 Radiation Fin Temperature Rise Error Code Method of Error Fin temperature is detected by the thermistor of the radiation fin. Detection Error Decision When the radiation fin temperature increases above 83°C (181.4°F) Conditions Defective main PCB (A1P) Supposed ...
SiUS181305E Troubleshooting for Outdoor Unit 7.19 Inverter Compressor Abnormality Error Code Method of Error The error is detected from current flowing in the power transistor. Detection Error Decision When an excessive current flows in the power transistor Conditions (Instantaneous overcurrent also causes activation.) ...
Troubleshooting for Outdoor Unit SiUS181305E 7.20 Inverter Current Abnormality Error Code Method of Error The error is detected by current flowing in the power transistor. Detection Error Decision When overload in the compressor is detected. (Inverter secondary current 16.1 A) (1) 19.0 A and over continues for 5 seconds.
SiUS181305E Troubleshooting for Outdoor Unit 7.21 Compressor Start-up Error Error Code Method of Error The error is detected from current flowing in the power transistor. Detection Error Decision Starting control of the compressor does not complete. Conditions Defective compressor Supposed ...
Troubleshooting for Outdoor Unit SiUS181305E 7.22 High Voltage of Capacitor in Main Inverter Circuit Error Code Method of Error The error is detected according to the voltage waveform of main circuit capacitor built in the Detection inverter. Error Decision When the voltage waveform becomes identical with the waveform of the power supply open phase Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.23 Radiation Fin Thermistor Abnormality Error Code Method of Error Resistance of radiation fin thermistor is detected when the compressor is not operating. Detection Error Decision When the resistance value of thermistor becomes a value equivalent to open or short circuited Conditions status ...
Troubleshooting for Outdoor Unit SiUS181305E 7.24 Low Pressure Drop due to Refrigerant Shortage or Electronic Expansion Valve Abnormality Error Code Method of Error Refrigerant shortage is detected by discharge pipe thermistor and low pressure saturation Detection temperature. Error Decision Microcomputer judge and detect if the system is short of refrigerant. The error is not decided while the operation continues.
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SiUS181305E Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Low pressure is Cooling? Refrigerant shortage, 0.25 MPa (84 ftAq) closed stop valve or or less? refrigerant system is clogged.
Troubleshooting for Outdoor Unit SiUS181305E 7.25 Power Supply Insufficient or Instantaneous Failure Error Code Method of Error Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Detection Error Decision When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply Conditions voltage are detected ...
SiUS181305E Troubleshooting for Outdoor Unit 7.26 Check Operation is not Conducted Error Code Method of Error Check operation is executed or not Detection Error Decision When the unit starts operation without check operation Conditions Supposed Check operation is not executed. Causes Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...
Troubleshooting for Outdoor Unit SiUS181305E 7.27 Signal transmission Error between Indoor Unit and Outdoor Unit in the Same System Error Code Method of Error Detection Error Decision Conditions Signal transmission error within system Supposed Defective electronic expansion valve in indoor unit of other system Causes ...
SiUS181305E Troubleshooting for Outdoor Unit 7.28 Excessive Number of Indoor Units Error Code A difference occurs in data by the type of refrigerant between indoor and outdoor units. Method of Error The number of indoor units is out of the allowable range. Detection ...
Troubleshooting for Outdoor Unit SiUS181305E 7.29 Address Duplication of Central Remote Controller Error Code Method of Error The principal indoor unit detects the same address as that of its own on any other indoor unit. Detection Error Decision The malfunction decision is made as soon as the abnormality is detected. Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.30 Transmission Error between Centralized Remote Controller and Indoor Unit Error Code Method of Error Microcomputer checks if transmission between indoor unit and centralized remote controller is Detection normal. Error Decision When transmission is not carried out normally for a certain amount of time Conditions ...
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Troubleshooting for Outdoor Unit SiUS181305E Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. an indoor unit once connected Reset power supply been remove or its simultaneously for all address changed? optional controllers for...
SiUS181305E Troubleshooting for Outdoor Unit 7.31 System is not Set yet Error Code Method of Error On check operation, the number of indoor units in terms of transmission is not corresponding to that Detection of indoor units that have made changes in temperature. Error Decision The malfunction is determined as soon as the abnormality aforementioned is detected through Conditions...
Troubleshooting for Outdoor Unit SiUS181305E 7.32 System Abnormality, Refrigerant System Address Undefined Error Code Method of Error The system detects an indoor unit to which auto address has not been assigned. Detection Error Decision The malfunction decision is made as soon as the abnormality is detected. Conditions ...
SiUS181305E Troubleshooting for Outdoor Unit 7.33 Check for Outdoor Unit 7.33.1 Check for Causes of Rise in High Pressure Check No.30 Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe...
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Troubleshooting for Outdoor Unit SiUS181305E 7.33.2 Check for Causes of Drop in Low Pressure Check No.31 Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. In cooling ←Are the electrical characteristics normal? Faulty low pressure sensor (See ∗1.) Faulty compressor...
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SiUS181305E Troubleshooting for Outdoor Unit 7.33.3 Fan Motor Connector Check Check No. 32 (1) Turn the power supply off. (2) With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. X106A, X107A (M1F, M2F) Measurement point...
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Troubleshooting for Outdoor Unit SiUS181305E 7.33.4 Check for the Factors of Overheat Operation Check No. 33 Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot Defective solenoid ← Check if coil resistance and insulation gas bypass valve coil control...
SiUS181305E Thermistor Resistance / Temperature Characteristics 8. Thermistor Resistance / Temperature Characteristics Table 1 Applicable Indoor unit Indoor unit Outdoor unit BP unit thermistor R2T: Indoor heat exchanger R1T: Room temperature R1T: Outdoor temperature DGA - DGC: Gas pipe 1 (liquid pipe) DLA - DLC: Liquid pipe R3T: Indoor heat exchanger Outdoor unit...
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Thermistor Resistance / Temperature Characteristics SiUS181305E Table 2 Applicable Outdoor unit Outdoor unit thermistor FINTH: Radiation fin R2T: Discharge pipe Thermistor temperature Resistance (k) Resistance (k) °C (°F) –30 (–22) 354.1 4759 –25 (–13) 259.7 3454 –20 (–4) 192.6 2534 –15 (5) 144.2 1877...
Method of Replacing Inverter’s Power Transistors Modules SiUS181305E 10.Method of Replacing Inverter’s Power Transistors Modules Check the power semiconductors mounted on the main PCB (A1P) with a multiple tester. <Items to be prepared> Multiple tester : Prepare the digital type of multiple tester with diode check function. <Preparation>...
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SiUS181305E Method of Replacing Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark – Not less than 0.3 V It may take time to (including )...
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SiUS181305E Part 9 Appendix 1. Piping Diagrams..................226 1.1 Outdoor Unit ..................... 226 1.2 Branch Provider (BP) Unit ................ 227 1.3 Indoor Unit....................228 2. Wiring Diagrams..................230 2.1 Outdoor Unit ..................... 230 2.2 Branch Provider (BP) Unit ................ 231 2.3 Indoor Unit....................232 3.
Piping Diagrams SiUS181305E Branch Provider (BP) Unit BPMKS048A2U INDOOR UNIT GAS SIDE ROOM A THERMISTOR ( DGA ) ( 5/8 CuT ) LOCAL PIPING SINGLE UNION JOINT GAS SIDE ROOM B REFRIGERANT FLOW THERMISTOR ( DGB ) ( 5/8 CuT ) HEATING LOCAL PIPING SINGLE UNION JOINT...
SiUS181305E Piping Diagrams Indoor Unit CTXS07LVJU CTXS07JVJU, CTXS09/12HVJU INDOOR UNIT INDOOR UNIT 1/4 CuT (5/16CuT) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR ON HEAT EXCH. THERMISTOR CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING ON HEAT EXCH. FIELD PIPING (1/4CuT) 1/4 CuT FAN MOTOR FIELD PIPING FAN MOTOR...
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Piping Diagrams SiUS181305E FDXS09/12LVJU CDXS15/18LVJU INDOOR UNIT INDOOR UNIT (1/4CuT) (1/4 (6.4mm) CuT) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR FIELD PIPING THERMISTOR ON HEAT FIELD PIPING ON HEAT (1/4CuT) EXCH. SIROCCO FAN (1/4 (6.4mm) CuT) SIROCCO FAN EXCH. FAN MOTOR FAN MOTOR FIELD PIPING (3/8CuT) FIELD PIPING...
SiUS181305E Wiring Diagrams Indoor Unit CTXS07LVJU PCB1 PCB3 LED1 OUTDOOR 3.15A C102 LED2 MR10 FIELD WIRING. LED3 C101 TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. t˚...
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Wiring Diagrams SiUS181305E FTXS15/18/24LVJU PCB3 PCB1 LED1 OUTDOOR 3.15A C102 LED2 MR10 FIELD WIRING. LED3 C101 GRN/YLW TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY t˚ IS TURNED OFF AND THEN BACK ON AGAIN. RTH1 : BUZZER C101 , C102...
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SiUS181305E Wiring Diagrams FFQ09/12/15/18LVJU PRINTED CIRCUIT BOARD PILOT LAMP : CONNECTER DISCRIMINATION COLOR FOR COMPONENTS. CAPACITOR ( M1F ) ( ON-RED ) : CONNECTER COLOR FOR COMPONENTS. FUSE ( F , 5A , 250V ) PILOT LAMP : CONNECTER COLOR FOR PRINTED CIRCUIT BOARD. PILOT LAMP ( TIMER-GREEN ) ( SERVICE MONITOR GREEN )
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Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorized importer, distributor and/or retailer whether this product conforms tot he applicable standards, and is suitable for use, in the region where the product will be used.