Daikin CDKS50CVMB- User Manual

Introduction SiENBE12-627 vi 1.1.2 Cautions Regarding Products after Repair Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an ele...

SiENBE12-627 Printed Circuit Board Connector Wiring Diagram 1 Part 1 List of Functions 1. Cooling Only............................................................................................22. Heat Pump ...............................................................................................

SiENBE12-627 Specifications 13 Part 2 Specifications 1. Cooling Only..........................................................................................14 1.1 Indoor Units ............................................................................................141.2 Outdoor Units .............

Cooling Only SiENBE12-627 14 Specifications 1. Cooling Only 1.1 Indoor Units Wall Mounted Type 50Hz 230V Model FTKS20D3VMW FTKS20D3VML Rated Capacity 2.0kW Class 2.0kW Class Front Panel Color White Silver Line Air Flow Rates m ł /min (cfm) H 8.7 (307) 8.7 (307) M 6.7 (237) 6.7 (237) L 4.7 (166) 4.7 ...

SiENBE12-627 Cooling Only Specifications 19 Duct Connected Type 50Hz 230V Note: 1. The operating sound is based on the rear side suction inlet and the external static pressure 30 Pa. Operating sound for under side suction inlet: [operating sound for rear side suction inlet]+6 dB. However, when insta...

Cooling Only SiENBE12-627 20 Specifications Floor / Ceiling Suspended Dual Type 50Hz 230V Model FLKS25BAVMB FLKS35BAVMB Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White Air Flow Rates m ł /min (cfm) H 7.6 (268) 8.6 (304) M 6.8 (240) 7.6 (268) L 6.0 (212) 6.6 (233) S...

SiENBE12-627 Printed Circuit Board Connector Wiring Diagram 33 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram..................................34 1.1 Wall Mounted Type ..............................................................................

Printed Circuit Board Connector Wiring Diagram SiENBE12-627 34 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram 1.1 Wall Mounted Type 1.1.1 FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E Connectors PCB(1) (Control PCB) PCB(2) (Signal Receiver PCB) PCB(3) (Disp...

SiENBE12-627 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 35 PCB Detail PCB(1): Control PCB PCB(4): INTELLIGENT EYE sensor PCB V1 S1 FU1 S6 S26 S28 S32 JC JB JA LED A S35 S21 (R4288) PCB(2): Signal Receiver PCB PCB(3): Display PCB S29 (R4289) RTH1 SW1...

Printed Circuit Board Connector Wiring Diagram SiENBE12-627 40 Printed Circuit Board Connector Wiring Diagram 1.2 Duct Connected Type Connectors PCB(1) (Control PCB) PCB(2) (Display PCB) Note: Other designations PCB(1) (Control PCB) PCB(2) (Display PCB) PCB Detail PCB (1): Control PCB 1) S1 Connecto...

SiENBE12-627 Function and Control 47 Part 4 Function and Control 1. Main Functions ......................................................................................48 1.1 Frequency Principle................................................................................481.2 Power-Airflow Dual ...

Main Functions SiENBE12-627 48 Function and Control 1. Main Functions Note: See the list of functions for the functions applicable to different models. 1.1 Frequency Principle Main Control Parameters The compressor is frequency-controlled during normal operation. The target frequency is set by the f...

SiENBE12-627 Main Functions Function and Control 49 Inverter Features The inverter provides the following features: " The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling / heating load. " Quick heating and quick coolingThe compressor rot...

Main Functions SiENBE12-627 52 Function and Control 1.3 Operation Starting Control FTXG25-35E, FTXG25-35E The system carries out the following control at the beginning to conduct every functional parts properly.1. Opening the front panel fully2. Output of the Δ D signal after the front panel starts ...

SiENBE12-627 Main Functions Function and Control 53 1.4 Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more ...

Main Functions SiENBE12-627 54 Function and Control 1.5 Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering.Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons ...

SiENBE12-627 Main Functions Function and Control 55 1.6 Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote control, the microcomputer automatically determines the operation mode from cooling and heating according to the room tempe...

Main Functions SiENBE12-627 56 Function and Control 1.7 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition $ The temperature difference is in the zone A. Thermostat ON Condition $ The temperature difference is abov...

Main Functions SiENBE12-627 58 Function and Control 1.9 ECONO Mode Outline FTK(X)S20-35D The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc..This mode is particularly convenient for energy-saving-oriented users. It is also a major ...

SiENBE12-627 Main Functions Function and Control 59 1.10 INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity. Processing 1. Detection meth...

Main Functions SiENBE12-627 60 Function and Control " Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermosta...

SiENBE12-627 Main Functions Function and Control 61 1.11 HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to ...

Main Functions SiENBE12-627 62 Function and Control 1.12 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. Details of the Control When POWERFUL...

SiENBE12-627 Main Functions Function and Control 65 1.14 Function of Thermistor 1.14.1 Heat Pump Model A Outdoor Heat Exchanger Thermistor (DCB) 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to ...

Control Specification SiENBE12-627 68 Function and Control 2. Control Specification 2.1 Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There a...

SiENBE12-627 Control Specification Function and Control 69 2.2 Frequency Control Outline Frequency that corresponds to each room’s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote control. The function is explained ...

Control Specification SiENBE12-627 72 Function and Control 2.3 Controls at Mode Changing / Start-up 2.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor, the outdoor air temperature and discharge pipe...

SiENBE12-627 Control Specification Function and Control 73 2.4 Discharge Pipe Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temper...

SiENBE12-627 Control Specification Function and Control 75 2.8 Fan Control Outline Fan control is carried out according to the following priority.1. Fan ON control for electric component cooling fan2. Fan control when defrosting3. Fan OFF delay when stopped 4. ON/OFF control when cooling operation5....

SiENBE12-627 Control Specification Function and Control 77 2.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power.2....

SiENBE12-627 Control Specification Function and Control 79 2.11.1 Fully Closing with Power On Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 2.11.2 Pressure Equalization Control When the compressor is stopped, open and c...

Control Specification SiENBE12-627 80 Function and Control Detail Detect Disconnection If a 780-second timer for open control becomes over, the following adjustment must be made.1. When the operation mode is cooling When the discharge pipe temperature is lower than the outdoor heat exchanger tempera...

SiENBE12-627 Control Specification Function and Control 81 2.12 Malfunctions 2.12.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor2. Discharge pipe thermist...

Control Specification SiENBE12-627 82 Function and Control 2.12.4 Preventing Indoor Freezing During cooling, if the heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time, open the electronic expansion valve in the operation stopped ro...

SiENBE12-627 Control Specification Function and Control 83 2.14 Additional Function 2.14.1 POWERFUL Operation Mode Compressor operating frequency and outdoor unit airflow rate are increased. 2.14.2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts. 2.14...

SiENBE12-627 System Configuration 85 Part 5 System Configuration 1. System Configuration ............................................................................862. Instruction..............................................................................................87 2.1 Manual Contents an...

System Configuration SiENBE12-627 86 System Configuration 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room...

SiENBE12-627 Instruction System Configuration 87 2. Instruction 2.1 Manual Contents and Reference Page H 1 : Illustrations are for wall mounted type FTXS20/25/35C as representative. H 2 : Illustrations are for wall mounted type FTXS20/25/35D as representative. Model Series Wall Mounted Type FTK(X)S2...

Instruction SiENBE12-627 88 System Configuration 2.2 Safety Precautions • Keep this manual where the operator can easily find them. • Read this manual attentively before starting up the unit. • For safety reason the operator must read the following cautions carefully. • This manual classifies precau...

SiENBE12-627 Instruction System Configuration 89 Installation site " To install the air conditioner in the following types of environments, consult the dealer.• Places with an oily ambient or where steam or soot occurs. • Salty environment such as coastal areas. • Places where sulfide gas occurs...

Instruction SiENBE12-627 90 System Configuration 2.3 Names of Parts FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E " Indoor Unit 16 14 13 15 12 1 3 4 5 7 9 10 11 8 6 2 ON/OFF

SiENBE12-627 Instruction System Configuration 91 " Outdoor Unit " Indoor Unit " Outdoor Unit Appearance of the outdoor unit may differ from some models. 19 22 20 21 18 17 1. Air filter2. Titanium Apatite Photocatalytic Air- Purifying Filter • These filters are attached to the inside of t...

Instruction SiENBE12-627 92 System Configuration " Remote control TEMP ON/OFF PO WERFUL MODE FA N SWING SILENT SENSOR ECONO COMFOR T TIMER ON CANCEL OFF 1 2 5 6 9 10 12 11 16 18 17 13 15 14 < ARC433A50, 43 > 3 4 7 8 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: ...

SiENBE12-627 Instruction System Configuration 93 FTK(X)S 20/25/35 C, ATK(X)S 20/25/35 D " Indoor Unit ON OFF

SiENBE12-627 Instruction System Configuration 101 " Remote Control 1. Signal transmitter: • It sends signals to the indoor unit. 2. Display: • It displays the current settings. (In this illustration, each section is shown with all its displays ON for the purpose of explanation.) 3. HOME LEAVE bu...

SiENBE12-627 Instruction System Configuration 105 2.4 Preparation Before Operation ATTENTION " To set the batteries 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA).3. Set the front cover as before. " About batteries • When replacing the batteri...

Instruction SiENBE12-627 106 System Configuration ATTENTION " To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate. • Do not d...

SiENBE12-627 Instruction System Configuration 107 NOTE " To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3. Press “CLOCK butt...

Instruction SiENBE12-627 108 System Configuration 2.5 Auto Dry Cool Heat Fan Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. " To start operation 1. Press “MODE selector button” a...

SiENBE12-627 Instruction System Configuration 109 " To change the air flow rate setting 5. Press “FAN setting button”. • Indoor unit quiet operation When the air flow is set to “ ” , the noise from the indoor unit will become quieter. Use this when making the noise quieter. The unit might lose c...

Instruction SiENBE12-627 110 System Configuration 2.6 Adjusting the Air Flow Direction FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blades (flaps) 1. Press “SWING button”. • The display on the LCD and the flaps ...

SiENBE12-627 Instruction System Configuration 111 " To start COMLFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. • The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. • [COOL/DRY] The flap will go up. • [HEAT]...

SiENBE12-627 Instruction System Configuration 113 Notes on flaps and louvers angles. " To adjust the vertical blades (louvers) •Hold the knob and move the louvers.•(You will find a knob on the left-side and the right-side blades) • When “ SWING button ” is selected, the flaps swinging range depe...

Instruction SiENBE12-627 114 System Configuration FTXG 25/35 E, ATXG 25/35 E You can adjust the air flow direction to increase your comfort. " To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD 2. When the flap has reached the desired position, press “S...

SiENBE12-627 Instruction System Configuration 117 Notes on flap and louvers angles. " To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully.Hold the knob and move the louvers. (You will find a knob on the left side and t...

Instruction SiENBE12-627 118 System Configuration .+ 2.7 POWERFUL Operation NOTE POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. " To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 mi...

SiENBE12-627 Instruction System Configuration 119 2.8 OUTDOOR UNIT SILENT Operation NOTE OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. " To start OUTDOOR UNIT SILENT ...

Instruction SiENBE12-627 120 System Configuration 2.9 ECONO Operation NOTE ECONO operation is a function with enables efficient operation by lowering the maximum power consumption value. " To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. " To cancel ECONO oper...

SiENBE12-627 Instruction System Configuration 121 2.10 HOME LEAVE Operation Before using HOME LEAVE operation. HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. " To start HOME LEAVE operation 1. Press “HOME LEAVE button”. • The ...

Instruction SiENBE12-627 122 System Configuration " What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set t...

SiENBE12-627 Instruction System Configuration 123 2.11 INTELLIGENT EYE Operation FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E “INTELLIGENT EYE” is the infrared sensor which detects the human movement. " To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. " T...

Instruction SiENBE12-627 124 System Configuration “INTELLIGENT EYE” is useful for Energy Saving Notes on “INTELLIGENT EYE” CAUTION " Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly i...

Instruction SiENBE12-627 126 System Configuration " To adjust the angle of the INTELLIGENT EYE sensor • You can adjust the angle of the INTELLIGENT EYE sensor to increase the detection area.(Adjustable angle: 15° to right and left of centre) • Gently push and slide the sensor to adjust the angle...

SiENBE12-627 Instruction System Configuration 129 2.12 TIMER Operation NOTE Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. " To use OFF TIMER operation • Check that the clock...

Instruction SiENBE12-627 130 System Configuration ATTENTION " To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. • 6:00 is displayed. • blinks. 2. 2.Press “TIMER Setting button” until the time setting reaches the po...

SiENBE12-627 Instruction System Configuration 131 2.13 Note for Multi Note <<What is a “Multi System”? >> This system has one outdoor unit connected to multiple indoor units. " Selecting the Operation Mode 1. With the Priority Room Setting present but inactive or not present When mor...

Instruction SiENBE12-627 132 System Configuration 2.14 Care and cleaning FTK(X)S 20/25/35 D, ATK(X)S 20/25/35 E CAUTION CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS " Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. " Fr...

SiENBE12-627 Instruction System Configuration 133 FILTERS 1. Open the front panel.2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter • Hold the recessed parts of the fr...

Instruction SiENBE12-627 134 System Configuration NOTE Check • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service sho...

SiENBE12-627 Instruction System Configuration 137 Check NOTE Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded.Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit.Check that the drain comes smoothly out of the d...

SiENBE12-627 Instruction System Configuration 141 FDK(X)S 25/35 C, FDK(X)S 25/35 E CAUTION • Only a qualified service person is allowed to perform maintenance.• Before cleaning, be sure to stop the operation and turn the breaker OFF. " Cleaning the air filter 1.Removing the air filter. • Rear su...

Instruction SiENBE12-627 146 System Configuration 2.15 Troubleshooting These cases are not troubles The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • When ON/OFF button was pressed soon after ...

SiENBE12-627 Instruction System Configuration 147 Check again Please check again before calling a repair person. Case Check The air conditioner does not operate. (OPERATION lamp is off) • Hasn’t a breaker turned OFF or a fuse blown? • Isn’t it a power failure? • Are batteries set in the remote contr...

Instruction SiENBE12-627 148 System Configuration WARNING If one of the following symptoms takes place, call the service shop immediately. Disposal requirements Your air conditioning product is marked with this symbol. This means that electrical and electronic products shall not be mixed with unsort...

SiENBE12-627 Instruction System Configuration 149 FAULT DIAGNOSIS BY REMOTE CONTROL. In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ 00 ” indication flashes on the temperature displ...

Instruction SiENBE12-627 150 System Configuration LED ON OUTDOOR UNIT PCB 3MXS, 3MKS, 4MXS, 4MKS series LED ON OUTDOOR UNIT PCB 2MXS, 2MKS serie NOTES GREEN RED MICROCOMPUTER NORMAL MALFUNCTION DETECTION LED_A LED1 LED2 LED3 LED4 DIAGNOSIS 5 1 1 1 1 NORMAL & CHECK INDOOR UNIT 5 4 1 4 4 HIGH PRES...

SiENBE12-627 Service Diagnosis 151 Part 6 Service Diagnosis 1. Caution for Diagnosis ..........................................................................1522. Problem Symptoms and Measures .....................................................1543. Service Check Function ..........................

Caution for Diagnosis SiENBE12-627 152 Service Diagnosis 1. Caution for Diagnosis The operation lamp flashes 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, disabling equipment operation. 2. When...

Problem Symptoms and Measures SiENBE12-627 154 Service Diagnosis 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the Units Operates. Check the power supply. Check to make sure that the rated voltage is supplied. — Check the type of the indoor units. Chec...

SiENBE12-627 Service Check Function Service Diagnosis 155 3. Service Check Function In the ARC433A series remote control, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flash...

Service Check Function SiENBE12-627 156 Service Diagnosis Check Method 2 1. Enter the diagnosis mode. Press the 3 buttons (TEMP s ,TEMP t , MODE) simultaneously. The digit of the number of tens blinks. H Try again from the start when the digit does not blink. 2. Press the TEMP button. Press TEMP s o...

Troubleshooting SiENBE12-627 158 Service Diagnosis 4. Troubleshooting 4.1 Error Codes and Description H : Displayed only when system-down occurs. Code Indication Description Reference Page System 00 Normal — U0 H Insufficient gas 189 U2 Over-voltage detection 191 U4 Outdoor unit PCB abnormality or s...

SiENBE12-627 Troubleshooting Service Diagnosis 159 4.2 Indoor Unit PCB Abnormality Remote control Display A1 Method of Malfunction Detection Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Decision Conditions When there is no zero-cross detection in approximately 10 co...

Troubleshooting SiENBE12-627 160 Service Diagnosis 4.3 Freeze-up Protection Control or High Pressure Control Remote Control Display A5 Method of Malfunction Detection " High pressure control (heat pump model only) During heating operations, the temperature detected by the indoor heat exchanger t...

Troubleshooting SiENBE12-627 162 Service Diagnosis 4.4 Fan Motor or Related Abnormality 4.4.1 AC Motor Remote Control Display A6 Method of Malfunction Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Decisi...

SiENBE12-627 Troubleshooting Service Diagnosis 171 4.10 Input Over Current Detection Remote Control Display E8 Method of Malfunction Detection An input over-current is detected by checking the input current value being detected by CT with the compressor running. Malfunction Decision Conditions "...

SiENBE12-627 Troubleshooting Service Diagnosis 173 4.11 Four Way Valve Abnormality Remote Control Display EA Method of Malfunction Detection The liquid pipe temperature thermistor, the outdoor air temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they functi...

SiENBE12-627 Troubleshooting Service Diagnosis 175 4.12 Discharge Pipe Temperature Control Remote Control Display F3 Method of Malfunction Detection The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor...

Troubleshooting SiENBE12-627 176 Service Diagnosis 4.13 High Pressure Control in Cooling Remote Control Display F6 Method of Malfunction Detection High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exce...

Troubleshooting SiENBE12-627 178 Service Diagnosis 4.14 Position Sensor Abnormality Remote Control Display H6 Method of Malfunction Detection A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions ...

SiENBE12-627 Troubleshooting Service Diagnosis 179 4.15 CT or Related Abnormality Remote Control Display H8 Method of Malfunction Detection A CT or related error is detected by checking the compressor running frequency and CT-detected input current. Malfunction Decision Conditions The compressor run...

SiENBE12-627 Troubleshooting Service Diagnosis 183 4.17 Electrical Box Temperature Rise Remote Control Display L3 Method of Malfunction Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Decision Conditions " Wit...

SiENBE12-627 Troubleshooting Service Diagnosis 185 4.18 Radiation Fin Temperature Rise Remote Control Display L4 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Decision Conditions If the radiat...

SiENBE12-627 Troubleshooting Service Diagnosis 187 4.19 Output Over Current Detection Remote Control Display L5 Method of Malfunction Detection An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Decision Conditions " A position signal er...

SiENBE12-627 Troubleshooting Service Diagnosis 189 4.20 Insufficient Gas Remote Control Display U0 Method of Malfunction Detection Gas shortage detection I : A gas shortage is detected by checking the power consumption value and the compressor running frequency. Gas shortage detection II : A gas sho...

Troubleshooting SiENBE12-627 192 Service Diagnosis 4.22 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) Remote Control Display UA,UH Method of Malfunction Detection A wrong connection is detected by checking the combination of indoor and outdoor units on t...

SiENBE12-627 Troubleshooting Service Diagnosis 193 4.23 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality Remote Control Display U4 Method of Malfunction Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is n...

Check SiENBE12-627 200 Service Diagnosis 5.1.8 Inverter Units Refrigerant System Check Check No.11 5.1.9 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. " Checking the capacitor voltage ! With the circuit breaker still on, measure th...

SiENBE12-627 Check Service Diagnosis 201 5.1.10 Power Transistor Check Check No.13 " Checking the power transistor ! Never touch any live parts for at least 10 minutes after turning off the circuit breaker. ! If unavoidably necessary to touch a live part, make sure the power transistor's supply ...

Check SiENBE12-627 202 Service Diagnosis 5.1.12 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No.15 <Propeller fan motor>Make sure the voltage of 290~380V is being applied.(1) Stop the operation first and then the power off, and disconnect the connector S70.(2) Make sure there ...

SiENBE12-627 Removal Procedure 203 Part 7 Removal Procedure 1. Outdoor Unit ........................................................................................204 1.1 Removal of the Panels / Fan Motor ......................................................2041.2 Removal of the PCB .................

SiENBE12-627 Outdoor Unit Removal Procedure 209 1.2 Removal of the PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Disconnect the fan motor lead wire. " The PCB is upside down for the sake of qua...

Outdoor Unit SiENBE12-627 214 Removal Procedure 1.3 Removal of the Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Remove the top panel and the front panel. 1. Remove the electrical box. 1...

SiENBE12-627 Outdoor Unit Removal Procedure 217 1.4 Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Loosen the five screws of the right side panel. 2 Release the clamp of the com...

Outdoor Unit SiENBE12-627 220 Removal Procedure 1.5 Removal of the Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Disconnect the discharge pipe thermistor. 2 Disconnect the gas and liquid pipe th...

SiENBE12-627 Outdoor Unit Removal Procedure 221 1.6 Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the peripheries. Remove the followings so as not to be burned by a ga...

SiENBE12-627 Outdoor Unit Removal Procedure 223 1.7 Removal of the Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the electronic expansion valve coil. " Fit the claw of...

Outdoor Unit SiENBE12-627 224 Removal Procedure 1.8 Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the terminal cover. " Be careful so as not to burn the compressor term...

Others SiENBE12-627 228 Others 1. Others 1.1 Test Run from the Remote Control For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. " Trial operation may be disabled in either mode depending on the room temperatur...

SiENBE12-627 Others Others 229 1.2 Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two infrared remote controls can be set for different addresses. How to set the different addresses " Control PCB of the indoor unit (1) Remove t...

Others SiENBE12-627 230 Others 1.2.3 Adjusting the Angle of the Intelligent Eye Sensor " Once installation of the indoor unit is complete, adjust the angle of the Intelligent-eye sensor to ensure the detection area properly covers the room.(Adjustable angle : 15° to right and left of center) ...

SiENBE12-627 Appendix 231 Part 9 Appendix 1. Piping Diagrams ..................................................................................232 1.1 Indoor Units ..........................................................................................2321.2 Outdoor Units ............................

SiENBE12-627 Drawings & Flow Charts 241 Drawings & Flow Charts A adjusting the angle of the intelligent eye sensor ..230 anti-icing function in other rooms / unspecified voltage (between indoor and outdoor units) ..............192 arc433a ........................................................

SiENBE12-627 Index i Index Numerics 3 minutes stand-by .................................................72 A a1 .........................................................................159a5 .................................................................160, 166a6 ....................................