Fujitsu 9RLF Service Instructions Manual Download

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SPLIT TYPE
ROOM AIR CONDITIONER

WALL MOUNTED

type

Models

Indoor unit

Outdoor unit

INVERTER

SERVICE

INSTRUCTION

R410A

ASU 9RLF
ASU12RLF
ASU15RLS

AOU 9RLFW
AOU12RLFW
AOU15RLS

Summary of Contents for 9RLF

Page 1: ...SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTEDtype Models Indoor unit Outdoor unit INVERTER SERVICE INSTRUCTION R410A ASU 9RLF ASU12RLF ASU15RLS AOU 9RLFW AOU12RLFW AOU15RLS ...

Page 2: ...ONOMY OPERATION 21 OFF DEFROST OPERATION CONTROL 20 DEFROST OPERATION CONTROL 01 01 01 02 01 02 01 03 01 04 01 06 01 07 01 08 01 09 01 11 01 11 01 11 01 11 01 12 01 12 01 12 01 12 01 12 01 13 01 15 22 VARIOUS PROTECTIONS 01 16 01 11 2 TROUBLE SHOOTING 2 1 ERROR DISPLAY 2 1 1 WIRED REMOTE CONTROLLER DISPLAY OPTION 3 APPENDING DATA 2 1 2 OUTDOOR UNIT DISPLAY 2 1 3 INDOOR UNIT DISPLAY 2 2 TROUBLE SHO...

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

Page 4: ...s C zone 79rps 61rps 52rps 37rps 9RLF D zone 52rps 43rps 37rps 28rps E zone 64rps 55rps 49rps 36rps F zone 64rps 55rps 49rps 36rps 96rps 61rps 51rps 33rps 96rps 61rps 51rps 33rps 96rps 61rps 51rps 33rps 57rps 42rps 36rps 27rps 57rps 42rps 36rps 27rps 57rps 42rps 36rps 27rps A zone B zone C zone 12RLF 15RLS D zone E zone F zone 80rps 45rps 37rps 29rps 80rps 45rps 37rps 29rps 80rps 45rps 37rps 29rps...

Page 5: ...ange 01 02 minimum frequency maximum frequency ASU9RLF 22rps 99rps ASU12RLF 18rps 130rps ASU15RLS 15rps 119rps 3 DRY OPERATION 3 1 INDOOR UNIT CONTROL The compressor rotation frequency shall change according to the temperature set temperature and room temperature variation which the room temperature sensor of the indoor unit body has detected as shown in the Table3 However after the compressor is ...

Page 6: ... changeover operation NO NO Thermostat remains in OFF state for 6 minutes or longer System stops or operation command other than auto changeover operation YES YES When the air conditioner is set to the AUTO mode by remote control operation starts in the optimum mode from among the HEATING COOLING DRY and MONITORING modes During operation the optimum mode is automatically switched in accordance wit...

Page 7: ...ion 3 COOLING OPERATION Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as shown in Figure3 On the other hand if switched in HIGH QUIET the indoor motor will run at a constant airflow of COOL operation modes QUIET LOW MED HIGH as shown in Table4 Fig 3 Airflow change over Cooling AUTO When the room temperature rises When the room temperature drops TR Room t...

Page 8: ...7 MOISTURE RETURN PREVENTION CONTROL Cooling mode Dry mode Fig 4 Airflow change over Heating AUTO TR Ts 3 F 1 5 C 5 F TR Ts 2 5 C 3 F TR Ts 5 F 1 5 C 2 5 C TR Ts 2 F 1 C 4 F TR Ts 2 C 2 F TR Ts 4 F 1 C 2 C When the room temperature rises When the room temperature drops TR Room temperature Ts Setting temperature LOW mode MED mode MED mode 107 6 F 42 C 86 F 30 C 93 2 F 34 C Indoor heat exchanger tem...

Page 9: ...Motor 2 Fan Speed AC Motor DC Motor ASU9 12RLF 15RLS Following table shows the type of the outdoor fan motor The control method is different between AC motor and DC motor Table6 Type of Motor ASU9RLF 900rpm Cooling Heating ASU9RLF ASU12RLF ASU15RLS Y Z Zone 860 780 760 470 900 760 720 680 470 950 850 750 680 550 450 1100 850 780 590 480 Refer to Fig 7 rpm 860 470 330 F G 230 150 Y Z 850 750 670 50...

Page 10: ...8 Cooling Dry mode Fan mode 1 2 3 4 5 6 Types of Air flow Direction Setting During Heating Cooling Dry modes The Remote Controller s display does not change Use the air direction adjustments within the ranges shown above During AUTO mode operation for the first a few minutes after beginning operation air flow will be horizontal 1 the air direction cannot be adjusted during this period The air flow...

Page 11: ...rps 119rps ASU15RLS 40rps 57rps 72rps 80rps 101rps 110rps 80sec 140sec 200sec 380sec 440sec 440sec Table10 Compressor Operation Frequency Range 2 OPEARTION FREQUENCY CONTROL AT START UP The compressor frequency soon after the start up is controlled as shown in the Figure9 Fig 9 Compressor Control at Start up Time Time Time Time Time Time Frequency Time Frequency Frequency Frequency Frequency Frequ...

Page 12: ...ill be turned on Operation mode Stop mode Set time of timer 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 operatio...

Page 13: ...ration mode When the sleep timer is set the setting temperature is increased 2 F 1 C It increases the setting temperature another 2 F 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 2 F 1 C 4 F 2 C Set 60min In the heating operation mode When the sleep timer is set the setting temperature is decreased 2 F 1 C It decrea...

Page 14: ...r operation status for 2 minutes and 20 seconds after the compressor is stopped even if any operation is given At the time when the air conditioner is switched from the cooling mode to heating mode the compressor is stopped and the four way valve is switched in 2 minutes and 20 seconds later after the compressor stopped When the power was interrupted by a power failure etc during operation the ope...

Page 15: ...Forced cooling operation is started when pressing MANUAL AUTO button for 10 seconds or more During the forced cooling operation it operates regardless of room temperature sensor Operation LED and timer LED blink during the forced cooling operation They blink for 1 second ON and 1 second OFF on both operation LED and timer LED same as test operation Forced cooling operation is released after 60 min...

Page 16: ...ating defrost If the compressor continuous operation time is less than 10 minutes the OFF number of the compressor is counted If any defrost operated the compressor OFF count is cleared Normal defrost Compressor integrating operation time Less than 25 minutes More than 25 minutes Does not operate Outdoor heat exchanger temp 1 4 F 17 C at outside air temp 14 F 10 C Outdoor heat exchanger temp Outsi...

Page 17: ...ssor ON Outdoor HEX temp Over 60 8 F 16 C or Compressor ON time Maximum 15 minutes Defrost end Outdoor HEX temp Below 1 4 F 17 C Outdoor HEX temp Outside air temp Below 12 6 F 7 C or Outdoor HEX temp Below 4 F 20 C Compressor integrating operation Over 240 minutes Integrating defrost Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Defrost start Outdoor HEX temp Below 26 6 F 3 C Compressor OFF ...

Page 18: ...temperature is less than 24 8 F 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 24 8 F 4 C and Compressor integrating operation Over 30 minutes Defrost start Defrost Indicater Defrost lamp Lighting Outdoor heat exchanger temperature Over 60 8 F 16 C or Compressor ON time Over 15 minu...

Page 19: ...e compressor frequency 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 compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value Table19 Current Release Operation Value Release Value 01 16 Heating OT Control Release 5 5...

Page 20: ...ter the compressor and the outdoor fan motor are stopped and trouble display is performed 5 HIGH TEMPERATURE RELEASE CONTROL HEATING MODE On heating mode the compressor frequency is controlled as following based on the detection value of the indoor heat exchanger temperature sensor 01 17 Indoor heat exchange temperature Control System It returns to the normal operation 127 4 F 53 C 122 F 50 C Outd...

Page 21: ...2 TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER ...

Page 22: ...r unit Heat Ex sensor error Indoor unit fan motor error Outdoor unit main PCB error IPM error Compressor motor control error Discharge thermistor error 2 1 1 WIRED REMOTE CONTROLLER DISPLAY OPTION Outdoor thermistor error Serial communication error Outdoor unit Heat Ex sensor error Trip detection 1 SELF DIAGNOSIS 1 2 5 6 7 9 10 11 12 13 15 16 17 18 19 Outdoor unit fan motor error 4 way valve error...

Page 23: ...ss the SET TEMPERATURE button to select the error history number SU MO TU WE TH FR SA Error code Error history number 0 1 2 3 4 5 6 7 F E d c b A 9 8 ı ı Lower Raise 0 5sec ON 0 5sec OFF 2sec ON 2sec OFF 0 1sec ON 2sec OFF 0 1sec ON 0 1sec OFF 5sec ON 5sec OFF Continuously lighting 1 ERROR DISPLAY 2 1 2 OUTDOOR UNIT DISPLAY Discharge temperature error Outdoor unit fan motor error 17 Error contents...

Page 24: ... times flash 4 times flash 4 times flash 4 times flash 5 times flash 7 times flash 9 times flash 1 times flash 2 1 5 6 3 4 7 8 9 10 11 13 14 15 16 17 18 19 7 times flash 3 times flash Economy lamp Green Continuous flash 12 Remote controller communication error Indoor unit main PCB error Manual auto switch error Room temperature sensor error Indoor unit Heat Ex sensor error Indoor unit fan motor er...

Page 25: ...t bulb or any electronic equipment which causes harmonic wave Check Point 2 Check Connection Check any loose or removed connection line of Indoor unit and Outdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC187V AC208V 10 253V AC230V 10 app...

Page 26: ...f Indoor unit and Outdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC187V AC208V 10 253V AC230V 10 appears at Outdoor Unit Terminal L1 L2 Check Point 4 Check Serial Signal Reverse Transfer Signal Check Serial Signal Forward Transfer Signal...

Page 27: ...een remote control and Indoor unit and check if there is a disconnection of the cable Upon correcting the removed connector or mis wiring reset the power Check Voltage at CN305 terminal 1 3 of UTY XCBXZ1 Communication kit Power supply to Remote Control If it is DC13V Remote Control is failure Controller PCB is normal Replace Remote Control If it is DC 0V Controller PCB is failure Check Remote Cont...

Page 28: ...b or any electronic equipment which causes harmonic wave Note EEPROM EEPROM Electronically Erasable and Programmable Read Only Memory is a non volatile memory which keeps memorized information even if power is turned off It can change the contents electronically To change the contents it uses higher voltage than normal and it can not change a partial contents Rewriting shall be done upon erasing t...

Page 29: ... 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 Point 2 Replace Controller PCB If Check Point 1 do not improve the symptom change Controller PCB and Indicator PCB Check ON OFF switching operation by using a meter If Manual Auto Switch is disabled on off switching replace it Outdoor Unit No indic...

Page 30: ...is detected 1 Connector connection failure 2 Thermistor failure 3 Controller PCB failure Check if connector is removed Check 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 reset the power Make sure circuit diagram of indoor unit ...

Page 31: ...k 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 Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of indoor unit a...

Page 32: ...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 is continued more than 56 seconds 02 11 Check Point 4 Replace Controller PCB If Check Point 1 3 do not impr...

Page 33: ...1 1 Reset Power Supply and operate Does Error indication show again Check Point 1 2 Check external cause Check if temporary voltage drop was not generated Check if momentary open was not generated Check if ground is connection correctly or there are no related cables near the power line Change Main PCB Access to EEPROM failed due to some cause after outdoor unit started 02 12 Outdoor Unit No indic...

Page 34: ...1 Check external cause at Indoor and Outdoor Voltage drop or Noise 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 bulb or electric equipment that may cause harmonic wave Chec...

Page 35: ...ck Point 2 Check Outdoor Fan Heat Exchanger Is there anything obstructing the air distribution circuit Is there any clogging of Outdoor Heat Exchanger Is the Fan rotating by hand when operation is off If the Fan Motor is locked replace it Check Outdoor Fan Motor Refer to Trouble shooting 17 If the Fan Motor is failure replace it Check Point 4 Check Compressor PARTS INFORMATION 2 Check Compressor I...

Page 36: ...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 Check Point 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor DC5 0V If the voltage does not appear replace Main...

Page 37: ...e 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 16 5 C 10 C 95 6 30 C 50 3 20 C 80 C 70 C 60 C 30 C 20 C 10 C 5 C 0 C 50 C 40 C Indicate or Display Outdoor Unit LED 0 1sec ON 0 1sec OFF Indoor Unit Operation lamp 7 times Flash Timer lamp 3 times Flash Econo...

Page 38: ...e connector and check Thermistor resistance value Thermistor Characteristics Approx value If Thermistor is either open or shorted replace it and reset the power 02 17 15 C 20 C 224 3 30 C 159 7 25 C 35 C 5 2 40 C 4 2 45 C 3 5 50 C 2 8 55 C 30 C 25 C 10 C 5 C 0 C 5 C 10 C 20 C 15 C Indicate or Display Outdoor Unit LED 0 1sec ON 0 1sec OFF Indoor Unit Operation lamp 7 times Flash Timer lamp 4 times ...

Page 39: ...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 bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check Point 1 1 Reset Power Supply a...

Page 40: ...Continuous flash ERROR CODE E 94 1 Outdoor unit fan operation defective foreign matter on hear exchanger excessive rise of ambient temperature 2 Inverter PCB failure 3 Inverter compressor failure lock winding short Protection stop by overcurrent generation after inverter compressor start processing completed generated consecutively 10 times The number of generations is reset if the start up of the...

Page 41: ...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 compressor stops permanently 02 20 Check Po...

Page 42: ... 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 stops If and repeats 5 times in a row compressor and fan moto...

Page 43: ...CN30 12 15RL from PCB and check the resistance value of coil Resistance value is 1 22k 1 49k at 20 C If it is Open or abnormal resistance value replace Solenoid Coil 02 22 Cooling or Dry operation Indoor heat exchanger temp Room temp 18degF 10degC Heating operation Indoor heat exchanger temp room temp 18degF 10degC If the same operation is repeated 5 times the compressor stops permanently Solenoid...

Page 44: ... Is the Fan rotating Check by hand and if it is locked replace the motor Check Outdoor Fan Motor If the Fan Motor is defective replace it Check Point 4 Check Discharge Thermistor Isn t it fallen off the holder Is there a cable pinched Check characteristics of thermistor Refer to Trouble shooting 11 If defective replace the thermistor Check Point 2 Check EEV and Strainer Are EEV and Strainer open R...

Page 45: ...he 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 24 2 3 TROUBLE SHOOTING WITH NO ERROR CODE Check Point 3 Check Electrical Components YES YES OK NO Check the voltage of power supply Check if AC187 253V appears at Outdoor Unit Terminal L1 L...

Page 46: ...omentary 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 the voltage of power supply Check if AC187 253V appears at Outdoor Unit Terminal L1 L2 Check Fuse in Main ...

Page 47: ...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 48: ...ts that obstruct the air flow route Check clogged Heat 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 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 Strainer is clo...

Page 49: ...on 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 PARTS INFORMATION 1 2 Water Leaking 1 Erroneous installation 2 Drain ho...

Page 50: ...mpressor 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 PARTS INFORMATION 3 If there is no failure the defect of Compressor can be considered Compression part b...

Page 51: ...ce of each terminal If the resistance value is 0 or infinite replace Compressor If the symptom does not change with above Check 1 2 replace Main PCB Resistance Value 2 7 at 20 C 02 30 R S W WHITE C T BLACK Terminal cover opened RED S V R U R U RED WHITE S V C W BLACK C W BLACK Terminal cover opened WHITE RED AOU15RLS AOU12RLFW AOU9RLFW Terminal cover opened AOU9RLFW Resistance Value 0 7 at 20 C AO...

Page 52: ... 2 3 4 5 6 at 20 C Outdoor unit Electronic Expansion Valve EEV Check connection of connector CN40 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 W...

Page 53: ...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 54: ...3 APPENDING DATA R410A WALL MOUNTED type INVERTER ...

Page 55: ...ect the time setting for the filter sign display interval in the table below according to the amount of dust or debris in the room If you do not wish the filter sign to be displayed select the setting value for No indication Factory setting Setting Description Function Number Setting Value Standard Slightly lower control Lower control Warmer control 30 00 01 02 03 1 2 Setting the Cooler Room Tempe...

Page 56: ...troller temperature sensor Factory setting Setting Description Function Number Setting Value A B C D 44 00 01 02 03 1 6 Setting the Remote controller signal code Change the indoor unit Signal Code depending on the remote controllers Factory setting Setting Description Function Number Setting Value Operation Stop mode Setting forbidden Forced stop mode 46 00 01 02 1 7 Setting the External input con...

Page 57: ...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 58: ...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 59: ... 0 28 0 0 129 8 0 46 5 0 134 2 1 36 10 0 100 9 0 57 15 0 79 1 0 71 20 0 62 6 0 86 25 0 49 8 1 03 30 0 40 0 1 23 35 0 32 4 1 43 40 0 26 3 1 65 45 0 21 6 1 88 50 0 17 8 2 11 55 0 14 8 2 34 60 0 12 3 2 57 65 0 10 3 2 79 70 0 8 7 3 00 75 0 7 4 3 19 80 0 6 3 3 37 85 0 5 4 3 54 90 0 4 6 3 69 95 0 4 0 3 83 100 0 3 4 3 96 105 0 3 0 4 07 110 0 2 6 4 17 115 0 2 3 4 26 120 0 2 0 4 33 Temp C Resistance k Volt...

Page 60: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan Sep 2010 Printed in Japan ...

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