Daikin FTK(X)M-P Series, Service Manual

Page 1: ...Service Manual Inverter Pair Wall Mounted Type FTK X M P Series SiMT041509E Applied Models z Inverter Pair Heat Pump...

Page 2: ...Pair Wall Mounted Type FTK X M P Series zCooling Only Indoor Unit FTKM18PVMK FTKM24PVMK FTKM28PVMK Outdoor Unit RKM18PVMK RKM24PVMK RKM28PVMK zHeat Pump Indoor Unit FTXM18PVMK FTXM24PVMK FTXM28PVMK Ou...

Page 3: ...ation 17 1 6 Automatic Operation 18 1 7 Thermostat Control 19 1 8 NIGHT SET Mode 20 1 9 ECONO Operation 20 1 10 INTELLIGENT EYE Operation 21 1 11 Inverter POWERFUL Operation 22 1 12 Clock Setting 23 1...

Page 4: ...66 4 12 Compressor Lock 68 4 13 DC Fan Lock 69 4 14 Input Overcurrent Detection 70 4 15 Four Way Valve Abnormality 71 4 16 Discharge Pipe Temperature Control 73 4 17 Compressor System Sensor Abnormal...

Page 5: ...3 3 Field Settings 94 3 1 When 2 Units are Installed in 1 Room 94 3 2 Jumper Settings 94 4 Silicon Grease on Power Transistor Diode Bridge 95 Part 8 Appendix 96 1 Piping Diagrams 97 1 1 Indoor Unit 97...

Page 6: ...Warning Do not store the equipment in a room with successive fire sources e g naked flame gas appliance electric heater Be sure to disconnect the power cable plug from the plug socket before disassemb...

Page 7: ...in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury Warning Caution Do not repair the electrical components with...

Page 8: ...Fire extinguishing equipment If any hot work is to be conducted on the refrigeration equipment or any associated parts appropriate fire extinguishing equipment shall be made available at hand Prepare...

Page 9: ...es Repairs to sealed components During repairs to sealed components all electrical supplies shall be disconnected from the equipment being worked upon before the removal of any sealed covers etc If it...

Page 10: ...en into consideration The following procedure shall be adhered to Remove refrigerant Purge the circuit with inert gas Evacuate the inert gas Purge again with inert gas Carry out cutting or brazing of...

Page 11: ...ls on the equipment stating the equipment contains R 32 Refrigerant recovery When removing refrigerant from a system either for servicing or decommissioning it is recommended to conduct training so th...

Page 12: ...en the indoor and outdoor units Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections may cause excess...

Page 13: ...on the window frame If the unit is not securely mounted it may fall and cause injury For unitary type only When replacing the coin battery in the remote controller be sure to dispose of the old batter...

Page 14: ...ion may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt th...

Page 15: ...tion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or has to restart part of a procedure Note Note A Note provides...

Page 16: ...SiMT041509E 1 List of Functions Part 1 List of Functions 1 Functions 2...

Page 17: ...Worry Free Reliability Durability Auto restart after power failure z z 3 D airflow z z Self diagnosis R C LED z z COMFORT AIRFLOW operation z z Wiring error check function Comfort Control Auto fan sp...

Page 18: ...SiMT041509E 3 Specifications Part 2 Specifications 1 Specifications 4...

Page 19: ...ward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 45 0 43 0 41 0 45 0 43 0 70 0 67 0 64 0 70 0 67 Power Consumption Rated W 59 85 Power Factor R...

Page 20: ...eft Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 74 0 71 0 68 0 74 0 71 Power Consumption Rated W 91 Power Factor Rated 55 9 55 7 55 8 55 9 55 7 Temperature...

Page 21: ...zontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 45 0 43 0 41 0 45 0 43 0 49 0 47 0 45 0 49 0 47 0 70 0 67 0 64 0 70 0 67 0 70 0 67...

Page 22: ...eft Horizontal Downward Air Filter Removable Washable Mildew Proof Running Current Rated A 0 74 0 71 0 68 0 74 0 71 0 69 0 66 0 63 0 69 0 66 Power Consumption Rated W 91 84 Power Factor Rated 55 9 55...

Page 23: ...SiMT041509E Printed Circuit Board Connector Wiring Diagram 8 Part 3 Printed Circuit Board Connector Wiring Diagram 1 Indoor Unit 9 2 Outdoor Unit 11...

Page 24: ...nector 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 Connector for signal receiver PCB 8 H1 H2 H3 FG Conn...

Page 25: ...ropriate wiring diagram 1 S48 Connector for control PCB 3P224121 1 S48 1 S49 Connector for control PCB 2 SW1 Forced cooling operation ON OFF button Refer to page 92 for detail 3 LED1 H1P LED for opera...

Page 26: ...n motor 4 S80 Connector for four way valve coil 5 S90 Connector for thermistors outdoor temperature outdoor heat exchanger discharge pipe 6 S92 Jumpers for local setting Neither disconnect the connect...

Page 27: ...UL Operation 22 1 12 Clock Setting 23 1 13 WEEKLY TIMER Operation 24 1 14 Other Functions 30 2 Function of Thermistor 31 3 Control Specification 32 3 1 Mode Hierarchy 32 3 2 Frequency Control 33 3 3 C...

Page 28: ...s controlled by the following 2 parameters The load condition of the operating indoor unit The difference between the room thermistor temperature and the target temperature The target frequency is ada...

Page 29: ...nce the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following functions regulate the minimum and maximum frequency...

Page 30: ...explains the auto swing process for cooling dry heating and fan 3 D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room When th...

Page 31: ...ng explains the principle of fan speed control for cooling The upper limit is M tap for 30 minutes from the operation start Heating In heating operation the fan speed is regulated according to the ind...

Page 32: ...m thermistor temperature at start up and the target temperature is divided into two zones Then the unit operates in an appropriate capacity for each zone to maintain the temperature and humidity at a...

Page 33: ...et temperature Ts determines the target temperature Tt Ts 18 30 C 2 The target temperature Tt is calculated as Tt Ts C where C is the correction value C 0 C 3 Thermostat ON OFF point and operation mod...

Page 34: ...ne A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling...

Page 35: ...eaker capacity does not allow the use of multiple electrical devices and air conditioners It can be easily activated by pushing the ECONO button on the wireless remote controller Detail When this func...

Page 36: ...s in cooling In FAN operation the fan speed is reduced by 60 rpm When the microcomputer does not have a signal from the sensor in 20 minutes it judges that nobody is in the room and operates the unit...

Page 37: ...OWERFUL operation in cooling Note POWERFUL operation cannot be used together with ECONO or COMFORT AIRFLOW operation Operation mode Fan speed Target temperature COOL H tap A rpm 18 C DRY Dry rotating...

Page 38: ...et the clock to the current day of the week 3 Press the Clock button blinks 4 Press the Select or Select button to adjust the clock to the present time Holding down the Select or Select button increas...

Page 39: ...grammes Tuesday to Friday Saturday Sunday Programme 1 Programme 2 Programme 3 Programme 4 Use the copy mode to make settings for Tuesday to Friday because these settings are the same as those for Mond...

Page 40: ...desired day of the week and reservation number The day of the week and the reservation number of the current day will be displayed 1 to 4 settings can be made per day Pressing changes the reservation...

Page 41: ...iving tone and blinking of the OPERATION lamp is displayed on the LCD and WEEKLY TIMER operation is activated The TIMER lamp lights orange A reservation made once can be easily copied and the same set...

Page 42: ...o another day of the week The whole reservation of the selected day of the week will be copied Tuesday to Friday The whole reservation of the selected day of the week will be copied The reservation wi...

Page 43: ...confirmed reserved settings select the reservation number and press The mode is switched to setting mode Proceed to STEP4 3 Press to exit the confirmation mode is displayed on the LCD and WEEKLY TIMER...

Page 44: ...er will be displayed 2 Press to select the day of the week and the reservation number to be deleted and or blink Selecting blank will cancel any reservation you may have The selected reservation will...

Page 45: ...the ON OFF button once to start operation Press once again to stop it The ON OFF button is useful when the remote controller is missing or the battery has run out Forced cooling operation Forced cool...

Page 46: ...ture used in place of the inner temperature of the compressor rises abnormally the operating frequency becomes lower or the operation halts 2 The discharge pipe thermistor is used for detecting discon...

Page 47: ...s cooling operation R22042 Air conditioner control mode Forced operation mode Forced cooling operation for pump down operation Power transistor test mode Normal operation mode Fan Cooling includes dry...

Page 48: ...e command frequency Command frequency is determined in the following order of priority 1 Limiting defrost control time 2 Forced cooling 3 Indoor frequency command 2 Determine upper limit frequency The...

Page 49: ...ore than a certain fixed time the frequency is adjusted according to the D value When the D value is low the frequency is lowered When the D value is high the frequency is increased 3 Frequency contro...

Page 50: ...valve is carried out Detail OFF delay switch of four way valve The four way valve coil is energized for 160 seconds after the operation is stopped 3 3 3 Four Way Valve Operation Compensation Outline...

Page 51: ...r limit of frequency is set to keep the discharge pipe temperature from rising further Detail A Hz 32 B Hz 55 C Hz 75 D seconds 200 E seconds 200 F seconds 470 sec Time R13528 Hz Frequency C B D E F A...

Page 52: ...pping zone The upper limit of the compressor frequency is defined as operation frequency 2 Hz After this the output frequency is lowered by 2 Hz every second until it reaches the keep zone Keep zone T...

Page 53: ...to prevent abnormal high pressure The operating frequency limitation is judged with the indoor heat exchanger temperature A C B C C C 7 5 3 R22433 Reset zone Indoor heat exchanger thermistor temperatu...

Page 54: ...d as well as normal operation 5 Fan speed control during forced cooling operation The outdoor fan is controlled as well as normal operation during forced cooling operation 6 Fan speed control during P...

Page 55: ...essor operates for 6 minutes More than A minutes of accumulated time have passed since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The judgment is mad...

Page 56: ...ischarge pipe thermistor is disconnected Feedback Control Target discharge pipe temperature control Detail The followings are the examples of electronic expansion valve control which function in each...

Page 57: ...t opening of the electronic expansion valve is changed according to the frequency shift 3 11 6 High Discharge Pipe Temperature Control When the compressor is operating if the discharge pipe temperatur...

Page 58: ...the following adjustment is made 1 When the operation mode is cooling When the following condition is fulfilled the discharge pipe thermistor disconnection is ascertained Discharge pipe temperature 6...

Page 59: ...SiMT041509E Remote Controller 44 Part 5 Remote Controller 1 Remote Controller 45...

Page 60: ...t Temperature adjustment buttons AUTO DRY COOL HEAT FAN 18 30 C Not available 18 32 C 10 30 C Not available Displays the current settings In this illustration each section is shown with all its displa...

Page 61: ...ver moves right and left The flap louver stops when you press the Swing button again Press this button and adjust the day and time with the Select button Press this button again to complete TIMER sett...

Page 62: ...n Compressor Overload 66 4 12 Compressor Lock 68 4 13 DC Fan Lock 69 4 14 Input Overcurrent Detection 70 4 15 Four Way Valve Abnormality 71 4 16 Discharge Pipe Temperature Control 73 4 17 Compressor S...

Page 63: ...amp OFF Check the outdoor temperature Heating operation cannot be used when the outdoor temperature is 18 CWB or higher and cooling operation cannot be used when the outdoor temperature is below 10 CD...

Page 64: ...units In either case conduct the diagnostic procedure described in the following pages Service Monitor The indoor unit has a green LED LED A on the control PCB When the microcomputer works in order t...

Page 65: ...onding codes 2 To return to the normal mode hold the timer cancel button down for 5 seconds When the remote controller is left untouched for 60 seconds it also returns to the normal mode 3 Not all the...

Page 66: ...same time 5C is displayed on the LCD 2 Select 5C service check with the Temp or Temp button 3 Press the Mode button to enter the service check mode The left side number blinks 4 Press the Temp or Tem...

Page 67: ...or Temp button and change the number until you hear the long beep 8 Diagnose by the sound beep The left side number does not correspond with the error code two consecutive beeps The left side number...

Page 68: ...elated abnormality 58 C9 Room temperature thermistor or related abnormality 58 Outdoor Unit E1 Outdoor unit PCB abnormality 64 E3 Actuation of high pressure switch 65 E5 OL activation compressor overl...

Page 69: ...K Check the power supply voltage Start operation Voltage as rated Error repeats Check the power supply voltage Start operation Voltage as rated Error repeats Error repeats Combination of the indoor an...

Page 70: ...ontrol During heating operation the indoor heat exchanger temperature is above 60 C Supposed Causes Short circuited air Clogged air filter of the indoor unit Dust accumulation on the indoor heat excha...

Page 71: ...fan motor operation Error Decision Conditions The detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Supp...

Page 72: ...power before reconnecting the connector Replace the indoor fan motor Replace the indoor unit PCB control PCB Replace the indoor unit PCB control PCB Does the fan rotate smoothly Does the fan rotate Mo...

Page 73: ...posed Causes Disconnection of connector Thermistor corresponding to the error code is defective Defective indoor unit PCB Troubleshooting Check No 01 Refer to P 83 C4 Indoor heat exchanger thermistor...

Page 74: ...Low voltage detection The voltage detected by the DC voltage detection circuit is below 196 V The compressor stops if the error occurs and restarts automatically after 3 minute standby Over voltage de...

Page 75: ...upply voltage Check the connection of the compressor harness Disturbance factors Noise Power supply distortion Precaution before turning on the power again Make sure the power has been off for at leas...

Page 76: ...rmal Error Decision Conditions The data sent from the outdoor unit cannot be received normally or the content of the data is abnormal Supposed Causes Power supply voltage is not as specified Reduction...

Page 77: ...ween the indoor unit and outdoor unit Is LED A blinking Properly insulated Is there any disturbance Is there any wiring error Check the indoor unit outdoor unit connection wires Check the LED A on the...

Page 78: ...PCB Defective outdoor unit PCB Disconnection of connector S92 Broken jumpers wires of connector S92 Troubleshooting R22028 Caution NO YES YES YES NO NO NO YES Match the compatible models OK Correct th...

Page 79: ...ary drop of voltage Momentary power failure Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Continuously ON or OFF Bl...

Page 80: ...oken S1PH harness Defective high pressure switch S1PH Troubleshooting NO YES Nearly 0 Resistance Check the resistance between the pins 1 2 on the connector S40 Stop valve open Open the stop valve Near...

Page 81: ...rror repeats the system is shut down Reset condition Continuous run for about 60 minutes without any other error Supposed Causes Disconnection of discharge pipe thermistor Defective discharge pipe the...

Page 82: ...electronic expansion valve or the coil Refer to the refrigerant line check procedure Replace the outdoor unit PCB main PCB Replace the four way valve or the coil Replace the outdoor unit PCB main PCB...

Page 83: ...he harnesses U V and W R21067 Caution NO YES YES NO NO YES NO YES Check No 15 Check with the inverter analyzer Turn off the power and reconnect the harnesses Turn on the power again and restart the sy...

Page 84: ...an Defective fan motor Defective outdoor unit PCB Troubleshooting Check No 16 Refer to P 87 R21669 Caution YES YES NO YES NO NO YES NO NO Turn on the power Rotate the fan YES Check No 16 Check the rot...

Page 85: ...aution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged An input overcurrent may result from wrong internal wiring If the system is interrupte...

Page 86: ...owing condition continues over 10 minutes after operating for 5 minutes Cooling Dry A B 5 C Heating B A 5 C A Room thermistor temperature B Indoor heat exchanger temperature If the error repeats the s...

Page 87: ...st clogged Reconnect the thermistor s Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged R20405 Refrigerant shortage Water mixed Stop va...

Page 88: ...istor Defective electronic expansion valve or coil Refrigerant shortage Defective four way valve Water mixed in refrigerant Defective stop valve Defective outdoor unit PCB Troubleshooting Check No 01...

Page 89: ...before compressor start up is below 50 V Supposed Causes Broken or disconnected harness Defective outdoor unit PCB Troubleshooting Caution Be sure to turn off the power switch before connecting or di...

Page 90: ...ditions The compressor fails to start in about 15 seconds after the compressor run command signal is sent If the error repeats the system is shut down Reset condition Continuous run for about 11 minut...

Page 91: ...rt circuit of the diode bridge Check No 15 Check with the inverter analyzer Turn off the power Disconnect the harnesses U V and W Turn on the power Check the electrolytic capacitor voltage Electrical...

Page 92: ...ower on J3 error is judged if the discharge pipe temperature is lower than the heat exchanger temperature Supposed Causes Disconnection of the connector for the thermistor Thermistor corresponding to...

Page 93: ...r s of the following thermistors Outdoor temperature thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Cooling Outdoor heat exchanger temperature Heating Indoor heat exchanger tem...

Page 94: ...outdoor unit PCB Troubleshooting Check No 17 Refer to P 88 Check No 19 Refer to P 89 A C B C C C 90 75 81 Caution WARNING To cool the electrical components the outdoor fan starts when the radiation fi...

Page 95: ...he radiation fin after replacing the outdoor unit PCB Troubleshooting Check No 17 Refer to P 88 Check No 19 Refer to P 89 Note Refer to Silicon Grease on Power Transistor Diode Bridge on page 95 for d...

Page 96: ...rotation speed error occurs while the compressor is running An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer If the error repeats the system is sh...

Page 97: ...e same error occurs Check the power supply voltage Monitor the power supply voltage discharge and suction pressures and other factors for a long term Possible causes Momentary drop of power supply vol...

Page 98: ...n a PCB remove the PCB from the control PCB to measure the resistance When the connector of indoor heat exchanger thermistor is soldered on a PCB remove the thermistor and measure the resistance Therm...

Page 99: ...alve Check Check No 12 Conduct the followings to check the electronic expansion valve EV 1 Check if the EV connector is correctly connected to the PCB 2 Turn the power off and on again and check to se...

Page 100: ...valve coil Cooling Dry Not energized Heating Energized Replace the outdoor unit PCB main PCB Replace the four way valve coil Replace the four way valve Four way valve coil resistance at 1000 2000 S80...

Page 101: ...r drops to 10 VDC or below before carrying out the service work Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to co...

Page 102: ...burned due to loosening 5 8 Rotation Pulse Check on the Outdoor Unit PCB Check No 16 Make sure that the voltage of 320 V is applied 1 Set operation off and power off Disconnect the connector S70 2 Ch...

Page 103: ...dirty Change the installation location or direction Change the installation location or direction Clean the outdoor heat exchanger Change the installation location or direction Check the outdoor tempe...

Page 104: ...referring to the table below If the resistance is or less than 1 k short circuit occurs on the main circuit R21195 YES NO NO YES Outdoor fan system is functioning Check the outdoor fan system Reconnec...

Page 105: ...press the protrusion on the connector Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multimeter Evaluate the mea...

Page 106: ...tion and Field Settings 1 Tips for Servicing 92 1 1 Pump Down Operation 92 1 2 Forced Cooling Operation 92 2 Trial Operation 93 3 Field Settings 94 3 1 When 2 Units are Installed in 1 Room 94 3 2 Jump...

Page 107: ...Forced Cooling Operation Indoor Unit Gas stop valve Valve cap Close Liquid stop valve Service port R13628 Hexagonal wrench Item Forced Cooling Conditions The forced cooling operation is allowed when b...

Page 108: ...30 C Trial operation may be disabled in either operation mode depending on the room temperature After trial operation is complete set the temperature to a normal level 26 C 28 C in cooling 20 C 24 C...

Page 109: ...lace the remote controller if you cut the jumper on the left side The heating operation will not be available when the jumper on the left side is cut 3 2 Jumper Settings Indoor Unit For the location o...

Page 110: ...ridge Detail 1 Wipe off the old silicon grease completely 2 Apply the silicon grease evenly See the illustrations below for examples of application 3 Tighten the screws of the power transistor diode b...

Page 111: ...SiMT041509E Appendix 96 Part 8 Appendix 1 Piping Diagrams 97 1 1 Indoor Unit 97 1 2 Outdoor Unit 98 2 Wiring Diagrams 101 2 1 Indoor Unit 101 2 2 Outdoor Unit 102...

Page 112: ...EAT EXCHANGER CROSS FLOW FAN M FAN MOTOR HEADER 12 7 CuT REFRIGERANT FLOW COOLING FIELD PIPING 15 9 CuT FIELD PIPING 6 4 CuT THERMISTOR ON HEAT EXCH 4D092476 12 7CuT 7 9CuT M DISTRIBUTOR HEADER 6 4CuT...

Page 113: ...ED VALVE MUFFLER WITH FILTER HEAT EXCHANGER CONDENSER THERMISTOR OUTDOOR TEMPERATURE THERMISTOR 4 WAY VALVE DISCHARGE PIPE THERMISTOR 3D092780 OUTDOOR UNIT HEAT EXCHANGER 7 9 CuT 7 9 CuT 12 7 CuT 7 9...

Page 114: ...PIPING LIQUID 6 4 CuT FIELD PIPING GAS 15 9 CuT GAS LINE STOP VALVE 4 WAY VALVE DISCHARGE PIPE THERMISTOR 3D092776 OUTDOOR UNIT HEAT EXCHANGER 7 9 CuT 7 9 CuT 12 7 CuT 7 9 CuT 7 9 CuT 6 4 CuT STRAINE...

Page 115: ...R TEMPERATURE THERMISTOR HEAT EXCHANGER CONDENSER THERMISTOR MUFFLER WITH FILTER MOTOR OPERATED VALVE MUFFLER WITH FILTER 3D092775 OUTDOOR UNIT HEAT EXCHANGER 7 9 CuT 7 9 CuT 12 7 CuT 7 9 CuT 9 5 CuT...

Page 116: ...BLU S25 BLK BRN 1 1 PCB4 BLK ORG S36 1 WHT 3 S41 S47 S32 BLK 4 M1F 9 11 4 1 3 2 1 1 8 7 14 10 16 12 6 15 2 13 3 5 BLK BLK BLK BLK BLK PNK PNK PNK BLU BLU BLU ORG ORG ORG RED RED RED YLW YLW YLW S48 P...

Page 117: ...3 FU3 30A FU1 3 15A FU2 3 15A Z1C N 4 MS 3 IN CASE OF HEAT PUMP TYPE JUMPER LOCAL SETTING IN CASE OF COOLING ONLY TYPE POWER SUPPLY 1 220 240V 50 60Hz 1 REFER TO THE NAMEPLATE FOR THE POWER REQUIREMEN...

Page 118: ...Revision History Month Year Version Revised contents 07 2015 SiMT041509E First edition...

Page 119: ...ries supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installation of parts and acce...