Fujitsu AO* R09LECN Service Instruction Download Page 3

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1 . DESCRIPTION OF EACH

CONTROL OPERATION

R410A

WALL MOUNTED type

INVERTER

Summary of Contents for AO* R09LECN

Page 1: ...SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTEDtype Models Indoor unit Outdoor unit AS A09LEC AS A12LEC AO R09LECN AO R12LECN INVERTER SERVICE INSTRUCTION R410A ...

Page 2: ...EATER OPERATION 01 01 01 02 01 03 01 04 01 05 01 07 01 08 01 09 01 10 01 13 01 13 01 13 01 13 01 14 01 14 01 14 01 14 01 15 01 15 01 15 22 DEFROST OPERATION CONTROL 24 VARIOUS PROTECTIONS 23 OFF DEFROST OPERATION CONTROL 01 16 01 18 01 19 01 13 2 TROUBLE SHOOTING 2 1 ERROR DISPLAY 2 1 1 INDOOR UNIT AND WIRED RMOTE CONTROLLER DISPLAY OPTION 3 APPENDING DATA 2 1 2 WIRED REMOTE CONTROLLER DISPLAY OPT...

Page 3: ...1 DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER ...

Page 4: ... 64rps 50rps 42rps 30rps 09LEC D zone 42rps 35rps 30rps 23rps A zone 96rps 61rps 51rps 33rps B zone 96rps 61rps 51rps 33rps C zone 96rps 61rps 51rps 33rps 12LEC D zone 57rps 42rps 36rps 27rps Table 1 Compressor speed range When the compressor operates for 30 minutes continuously at over the maximum speed the maximum speed is changed from Maximum speed to Maximum speed 01 01 When the room temperatu...

Page 5: ... in Figure 2 based on the fan speed mode and the outdoor temperature Table 2 Compressor speed range Fig 2 Limit of maximum speed based on outdoor temperature The room temperature is controlled 2 C higher than the setting temperature for 60 minutes after starting the operation After 60 minutes it is controlled based on the normal setting temperature 01 02 Minimum speed Maximum speed ASYA09LEC 18rps...

Page 6: ...3 However after the compressor is driven the indoor unit shall run at operation frequency of 52rps for ASYA09LEC or 61rps for ASYA12LEC for a minute Ts 0 5 C Ts 1 5 C Ts 0 5 C Ts 1 5 C Table 3 Compressor frequency Fig 3 Compressor control based on room temperature 01 03 Operating speed 30rps 23rps 0rps 09LEC X zone J zone Y zone Operating speed J zone Y zone X zone 33rps 25rps 0rps 12LEC Room Room...

Page 7: ...tic dry Cooling automatic dry TS 2 C TB TS 2 C Monitoring Monitoring Monitoring TB TS 2 C Heating Heating Monitoring When COOLING was selected at the air conditioner operates as follow The same operation as COOLING OPERATION of item 1 above is performed When the room temperature has remained at set temperature 1 C for 8 minutes operation is automatically switched to DRY and the same operation as D...

Page 8: ...ble 5 Fig 5 Airflow change over Cooling AUTO When the room temperature rises When the room temperature drops TR Room temperature Ts Setting temperature TR Ts 2 degC 1 degC TR Ts 2 degC TR Ts 1 degC TR Ts 2 5 degC 1 5 degC TR Ts 2 5 degC TR Ts 1 5 degC HIGH mode MED mode LOW mode 4 DRY OPERATION Refer to the Table 5 During the dry mode operation the fan speed setting can not be changed 5 HEATING OP...

Page 9: ...compressor Lower of Hi and setting fan speed Lower of Me and setting fan speed Lower of Lo and setting fan speed Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops 47 C 40 C 40 C 35 C After 7 minutes upon running the compressor Lower of Hi and setting fan speed Lower of Me and setting fan speed Lower of Lo and setting fan speed Switch the airflow AUTO at dry mode and t...

Page 10: ...frequency Table9 Outdoor fan speed after the defrost 1 Outdoor Fan Motor 2 Fan Speed AC Motor DC Motor ASYA09 12LEC Following table shows the type of the outdoor fan motor The control method is different between AC motor and DC motor Table7 Type of Motor ASYA09LEC 850rpm Cooling Heating ASYA09LEC ASYA12LEC D F Zone 850 750 670 500 850 750 680 550 450 900 750 680 550 450 Refer to Fig 9 rpm 400 280 ...

Page 11: ...odes do not set the Air Flow Direction Louver in the Heating range for long period of time since water vapor many condense near the outlet louvers and drop of water may drip from the air conditioner During the Cooling and Dry modes if the Air Flow Direction Louvers are left in the heating range for more than 30minutes they will automatically return to position During Monitor operation in AUTO CHAN...

Page 12: ...m Minimum Maximum ASYA09LEC ASYA12LEC 18rps 64rps 18rps 119rps 18rps 96rps 18rps 23rps 25rps 30rps 33rps 119rps Table 10 Compressor operation speed range 2 OPERATION SPEED CONTROL AT START UP The compressor speed soon after the start up is controlled as shown in the figure 11 Fig 11 Compressor control at start up 80sec 60sec 60sec 180sec 60sec 60sec 56rps 74rps 87rps 108rps 119rps 97rps 01 09 Time...

Page 13: ...setting 01 10 The program timer allows the OFF timer and ON timer to be used in combination one time Operation mode Operation will start from the timer setting either OFF timer or ON timer whichever is closest to the clock s current timer setting The order of operations is indicated by the arrow in the remote control unit s display SLEEP timer operation cannot be combined with ON timer operation 2...

Page 14: ...ion In the cooling operation mode When the sleep timer is set the setting temperature is increased 1 C It increases the setting temperature another 1 C after 1 hour After that the setting temperature is not changed and the operation is stopped at the time of timer setting Ts 1 C 2 C Set 60min In the heating operation mode When the sleep timer is set the setting temperature is decreased 1 C It decr...

Page 15: ...Y TIMER This timer function can set operation times of the each day of the week All days can be set together the weekly timer can be used to repeat the timer setting for all of the days 3 TEMPERATURE SET BACK TIMER This timer function can change setting temperature of setting operation times of the each day of the week This can be together with other timer setting Normal tmp ON OFF Setting day Set...

Page 16: ...ation the operation contents at that time are memorized and when power is recovered operation is automatically started with the memorized operation contents When the power is interrupted and recovered during timer operation since the timer operation time is shifted by the time the power was interrupted an alarm is given by blinking 7 sec ON 2 sec OFF the indoor unit body timer lamp Operation conte...

Page 17: ...ion Forced cooling operation is released after 60 minutes of starting operation The FORCED COOLING OPERATION will start as shown in Table14 When the outdoor heat exchanger temperature is lower than 5 C and the all operation has been stopped for 30 minutes power is applied to the compressor and the compressor is heated By heating the compressor warm air is quickly discharged when operation is start...

Page 18: ...ECONOMY operation is almost the same operation as below settings Mode Cooling Dry Heating Target temperature Setting temp 1 C Setting temp 1 C Table17 21 BASE HEATER OPERATION The base heater is operated as shown in Figure 13 Fig 13 Base heater control ON 2 C 5 C OFF When outdoor temperature drops When outdoor temperature rises When the compressor stops Base heater is OFF When the outdoor fan moto...

Page 19: ...n ST Defrosting after 2 time upon starting operation ND Compressor integrating operation time Compressor integrating operation time Compressor integrating operation time Less than 20 min 20 to 60 min More than 60 min Does not operate 9 C 5 C Less than 35 min More than 35min Does not operate Integrating defrost Constant monitoring More than 240 min For long continuous operation Less than 10min 1 Fo...

Page 20: ...aximum 15 minutes Defrost end Compressor integrating operation Over 20 min Outdoor heat exchanger temperature Below 9 C Outdoor heat exchanger temperature Below 5 C Compressor integrating operation Over 35 min 2nd and later defrost Integrating defrost Constant monitoring Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Defrost start Tn Tn10 5deg Tn Tnb 2deg However Tn 6 C Compressor OFF count 4...

Page 21: ...utdoor heat exchanger temperature is less than 4 C and compressor operation integrating time lasts for more than 30 minutes OFF Defrost Flow Chart Heating operation stop Outdoor heat exchanger temperature Below 4 C Compressor integrating operation Over 30 minutes Defrost start Defrost Indicater Operation lamp 7 sec ON 2 sec OFF Outdoor heat exchanger temperature Over 16 C or Compressor ON time Max...

Page 22: ...s system will be stopped permanently and the indoor unit LED starts error indication Table 20 Discharge Temperature Over Rise Prevension Control Release Temperature Temperature Temperature Temperature 2 CURRENT RELEASE CONTROL The compressor speed is controlled so that the outdoor unit input current does not exceeds the current limit velue that was set up with the outdoor temperature The compresso...

Page 23: ...ased on the detection value of the indoor heat exchanger temperature sensor 01 20 Outdoor temperature zone A B C D 7 C 13 C Release temperature A E F Indoor heat exchange temperature rises Indoor heat exchange temperature drops Control System It returns to the normal operation 53 C 50 C The compressor speed is decreased 3rps every 60seconds 5 1 HIGH TEMPERATURE RELEASE CONTROL of Outdoor Unit Indo...

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Page 25: ...2 TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER ...

Page 26: ...tdoor discharge pipe temperature thermistor error 2 times Outdoor heat exchanger temperature thermistor error 3 times 6 7 Outdoor temperature thermistor error 4 times 8 3 times Manual auto switch error Main relay welded error 2 times 10 4 times 12 Over current protection 2 times 13 CT error 3 times 14 Compressor location ditection error 5 times 15 Outdoor unit fan error 5 times 6 times 16 Indoor f...

Page 27: ...orized error codes may be displayed for the indoor unit connected to the remote controller 1 Stop the air conditioner operation 2 Press the SET TEMPERATURE buttons simultaneously for 3 seconds or more to start the self diagnosis 4 Press the SET TEMPERATURE buttons simultaneously for 3 seconds or more or there is no key input for 60 seconds to stop the display 3 Press the SET TEMPERATURE button to ...

Page 28: ...ndoor unit and outdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198 AC220V 10 264V AC240V 10 appears at outdoor unit terminal L N Check Point...

Page 29: ... 2 Check connection Check any loose or removed connection line of between indoor unit and outdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC19...

Page 30: ...PCB failure Check correct the followings Check the connection of terminal between Wired Remote Controller and indoor unit and check if there is a disconnection of the cable Check Voltage at CN305 terminal 1 3 of UTY XCBXE Communication kit Power supply to Remote Control When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more 02 05 Refer to error co...

Page 31: ...hen Room Temperature Thermistor open or short circuit is detected at power ON 1 Connector connection failure 2 Thermistor failure 3 Controller PCB failure Check if connector is removed Check if connector is erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Thermistor characteristics Approx value If Thermistor is either open o...

Page 32: ...rmistor open or short circuit is detected at power ON 1 Connector connection failure 2 Thermistor failure 3 Controller PCB failure Check if connector is removed Check if connector is erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and...

Page 33: ... 2 Thermistor failure 3 Main PCB failure Check Point 1 Check connection of connector Check if connector is removed Check if connector is erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Check Point 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or...

Page 34: ... is removed Check if connector is erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Check Point 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and reset the power 02 09 Refer to error code table 12 4 5 Resistance value k Tempe...

Page 35: ...PCB failure Check Point 1 Check connection of connector Check if connector is removed Check if connector is erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Check Point 2 Remove connector and check thermistor resistance value Thermistor characteristics Approx value If Thermistor is either open or shorted replace it and reset...

Page 36: ...10 or more seconds 1 Manual Auto Switch failure 2 Controller PCB and Indicator PCB failure Check Point 1 Check the Manual Auto Switch Check if Manual Auto Switch is kept pressed Check ON OFF switching operation by using a meter If Manual Auto Switch is disabled on off switching replace it Check Point 2 Replace Inverter PCB If Check Point 1 do not improve the symptom replace Controller PCB and Indi...

Page 37: ...time of operation stop under the Main relay is OFF condition 1 Power code assy 1 2 Main PCB failure 3 Controller PCB failure 02 12 Check Point 1 Replace Main PCB Change Main PCB Refer to error code table OK OK Check Point 2 Replace Controller PCB If Check Point 1 do not improve the symptom replace Controller PCB OK OK Check Point 3 Replace Power code assy 1 If Check Point 2 do not improve the symp...

Page 38: ... by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198 AC220V 10 264V AC240V 10 appears at outdoor unit terminal L N When power frequency is not detected by 4 seconds after power on 02 13 Check Point ...

Page 39: ...ng the removed connector or mis wiring reset the power If Check Point 1 3 do not improve the symptom replace Main PCB When over current flows in Inverter PCB the compressor stops After the compressor restarts if the same error is repeated within 40sec the compressor stops reappear If and repeats 5 times the compressor stops permanently 02 14 Refer to error code table Check Point 5 Replace Compress...

Page 40: ...wer 1 Connection failure 2 External cause 3 Main PCB failure Check Point 1 1 Reset power supply and operate Does error indication reappear When Input Current Sensor has detected 0A while Inverter Compressor is operating at higher than 56rps after 1minute upon starting the Compressor Except during the defrost operation 02 15 Refer to error code table Check Point 1 2 Check external cause such as noi...

Page 41: ...n Upon correcting the removed connector or mis wiring reset the power Refer to PARTS INFORMATION 2 For Compressor Terminal Main PCB While running the compressor if the detected rotor location is out of phase with actual rotor location more than 90 the compressor stops After the compressor restarts if the same operation is repeated within 40sec the compressor stops again If and repeats 5 times the ...

Page 42: ...ck Point 4 Check Output Voltage of Main PCB Check outdoor unit circuit diagram and the voltage Measure at Main PCB side connector If the voltage is not correct replace Main PCB When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts fan motor stops After fan motor restarts if the same operation within 60sec is repeated 3 times in a row compressor and fan motor stop...

Page 43: ...failure Rotate the fan by hand when operation is off Check if fan is caught dropped off or locked motor If Fan or Bearing is abnormal replace it Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation When the condition that actual frequency of Indoor Fan is below 1 3 of target frequency or 0rps i...

Page 44: ... Point 2 Check the EEV strainer Check Point 5 Check the refrigerant amount Leak check EEV open Strainer clogging check Refer to PARTS INFORMATION 3 Check Point 2 Check the EEV strainer If the 3 way valve gas side was closed open the 3 way valve gas side and check operation 02 19 Check Point 1 Check if 3 way valve liquid side is open If the 3 way valve liquid side was closed open the 3 way valve li...

Page 45: ... power Check Point 2 Check Outdoor Heat Exchanger Is there any obstructing the air flow route Is there any clogging of outdoor unit heat exchanger If clogged clear the cloge it Check Outdoor fan motor Refer to Trouble shooting 15 If the Fan Motor is failure replace it Check Thermistor Refer to Trouble shooting 7 If the Thermistor is failure replace it Check Point 5 Check EEV Check Point 4 Check Th...

Page 46: ... 21 Cooling or Dry operation Indoor heat exchanger temp Room temp 10degC Heating operation indoor heat exchanger temp room temp 10degC If the same operation is repeated 5 times the compressor stops permanently Solenoid coil Check each piping temperature and the location of the valve by the temperature difference If the value location is not proper replace 4 way valve 4 way valve OK OK Check Point ...

Page 47: ...re is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding 02 22 When inverter output DC voltage is higher than ...

Page 48: ...perate Does error indication show reappear Check all connectors loose connector or incorrect wiring Check any shortage or corrosion on PCB If Check Point 1 2 do not improve the symptom replace Controller PCB When power is on and there is some below case 1 When model information of EEPROM is incorrect 2 When the access to EEPROM failed 02 23 Refer to error code table Check Point 1 2 Check external ...

Page 49: ...entary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check Point 3 Check electrical components 02 24 2 3 TROUBLE SHOOTING WITH NO ERROR CODE Check the voltage of power...

Page 50: ...y of an abnormal power supply Check the correct power voltage OK OK Check Point 1 Check installation condition Isn t the breaker down Check loose or removed connection cable If abnormal condition is found correct it by referring to Installation Manual or Data Technical Manual Check Point 2 Check external cause at indoor unit and outdoor unit Voltage drop or noise Instant drop Check if there is a l...

Page 51: ...al Turn off Power and check correct followings Is there loose or removed communication line of Indoor unit and Outdoor unit Instant drop Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power supply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bul...

Page 52: ...ing the air flow route Is there any clogging on outdoor unit Hert Exchanger Is the valve open Is capacity of indoor unit fitted to room size Any windows open Or direct sunlight Check connection pipe Specified pipe length and pipe diameter Check any loose or removed communication line If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check if ...

Page 53: ...ction grille and front panel normal Is Fan broken or deformed Is the screw of Fan loose Is there any object which obstruct the Fan rotation Is main unit installed in stable condition Is Fan Guard installed normally Check if vibration noise by loose bolt or contact noise of piping is happening Is Compressor locked Check Compressor Water Leaking Diagnosis method when water is spitting out Is the fil...

Page 54: ... part broken or valve defective If there is no failure the defect of Compressor is considered Locked compressor due to clogged dirt or less oil Replace Compressor Replace Compressor Replace Compressor Stops soon after starting up Is there open or loose connection cable Is Gas Pipe Valve open Low Pressure is too low Check if Refrigerant is leaking Recharge Refrigerant Check if Strainer is clogged P...

Page 55: ...onnection of Compressor Loose or incorrect wiring Check winding resistance of each terminal If the resistance value is 0 or infinite replace Compressor If Check Point 1 2 do not improve the symptom replace lnverter PCB Resistance value 0 71 at 20 C R U RED S V WHITE C W BLACK Main PCB Check connection of Main PCB Loose or incorrect wiring W9 W8 W7 RED WHITE BLACK Compressor Inverter PCB ...

Page 56: ...nector Loose connector or open cable Remove connector check each winding resistance of Coil If Resistance value is abnormal replace EEV Remove Connector and check Voltage DC12V If it does not appear replace Main PCB Turn on Power and check operation noise If an abnormal noise does not show replace Main PCB When Valve is closed it has a temp difference between Inlet and Outlet If it is open it has ...

Page 57: ...oltage Vm No function No function Earth terminal GND Control voltage Vcc Speed command Vsp Feed back FG SERVICE PARTS INFORMATION 4 Check Point 1 Check rotation of Fan Indoor unit fan motor Rotate the fan by hand when operation is off Check if fan is caught dropped off or locked motor If Fan or Bearing is abnormal replace it Check Point 2 Check resistance of Indoor Fan Motor Refer to below Circuit...

Page 58: ...se connector or open cable Remove connector check resistance of Heater wire If Resistance value is abnormal replace Heater Unit 02 33 Check Point 2 Check electrical components Check Check Fuses CN10 1 2 3 4 5 3 2 1 3 2 1 1 2 3 4 5 BLACK BLACK WHITE WHITE BLACK BLACK WHITE FUSE 250V5A FUSE 250V5A HEATER THERMOSTAT 55 C If Fuse is open check connection and replace Fuse 321 366 ...

Page 59: ...3 APPENDING DATA R410A WALL MOUNTED type INVERTER ...

Page 60: ... 30 00 01 1 1 Setting the Cooling Room Temperature Correction Depending on the installed environment the room temperature sensor may require a correction The settings may be selected as shown in the table below Factory setting Setting Description Function Number Setting Value Standard Lower control Slightly warmer control Warmer control 31 00 01 02 03 1 2 Setting the Heating Room Temperature Corre...

Page 61: ...ontrol by Wired remote controller temperature sensor Factory setting Setting Description Function Number Setting Value A B C D 44 00 01 02 03 1 5 Setting the Remote controller signal code Change the indoor unit Signal Code depending on the remote controllers If setting value is 00 Room temperature is controlled by the indoor unit temperature sensor If setting value is 01 Room temperature is contro...

Page 62: ...etting Value Press the FAN button again to return to the Function Number selection Selecting the Function Number and Setting Value 6 Press the START STOP button It makes a signal to indoor unit Indoor unit run the setting 7 Press the RESET button to cancel the function setting mode 8 After completing the FUNCTION SETTING be sure to turn of the power and turn it on again CAUTION After turning off t...

Page 63: ...e setting of Fanction Number and Setting Value after setting custom code in remote controller please set custom code in remote controller again The remote control unit resets to signal code A when the batteries in the remote control unit are replaced If you use a signal code other than signal code A reset the signal code after replacing the batteries If you do not know the air conditioner signal c...

Page 64: ... 80 0 85 0 90 0 95 0 100 0 105 0 110 0 115 0 120 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 1013 1 729 1 531 6 392 3 292 9 221 1 168 6 129 8 100 9 79 1 62 5 49 8 40 0 32 4 26 3 21 6 17 8 14 8 12 3 10 3 8 7 7 4 6 3 5 4 4 6 4 0 3 4 3 0 2 6 2 3 2 0 0 06 0 09 0 12 0 16 0 21 0 28 0 36 0 46 0 57 0 71 0 86 1 03 1 23 1 43 1 65 1 88 2 1...

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