Fujitsu AOYG09KMCBN Service Instruction Download Page 2

Page: 2 / 61

CONTENTS

1. DESCRIPTION OF EACH CONTROL OPERATION

1. COMPRESSOR CONTROL.............................................................

3. INDOOR FAN CONTROL.................................................................

2. AUTO CHANGEOVER OPERATION...............................................

5. LOUVER CONTROL.........................................................................

4. OUTDOOR FAN CONTROL.............................................................

6. TIMER OPERATION CONTROL......................................................

8. OFF DEFROST OPERATION CONTROL........................................

7. DEFROST OPERATION CONTROL................................................

10. VARIOUS PROTECTIONS.............................................................

9. VARIOUS CONTROL.......................................................................

01-01
01-05
01-06
01-10
01-12
01-14
01-16
01-18

01-23

01-19

2. TROUBLESHOOTING

1. ERROR DISPLAY.............................................................................

2. TROUBLESHOOTING WITH ERROR CODE..................................
3. TROUBLESHOOTING WITH NO ERROR CODE............................

02-01
02-03
02-23

4. PARTS INFORMATION....................................................................02-28

Summary of Contents for AOYG09KMCBN

Page 1: ...Split type room air conditioner Wall mounted type Inverter Indoor unit Outdoor unit SERVICE INSTRUCTION ASYG09KMCB ASYG12KMCB ASYG14KMCB AOYG09KMCBN AOYG12KMCBN AOYG14KMCBN ...

Page 2: ...FAN CONTROL 6 TIMER OPERATION CONTROL 8 OFF DEFROST OPERATION CONTROL 7 DEFROST OPERATION CONTROL 10 VARIOUS PROTECTIONS 9 VARIOUS CONTROL 01 01 01 05 01 06 01 10 01 12 01 14 01 16 01 18 01 23 01 19 2 TROUBLESHOOTING 1 ERROR DISPLAY 2 TROUBLESHOOTING WITH ERROR CODE 3 TROUBLESHOOTING WITH NO ERROR CODE 02 01 02 03 02 23 4 PARTS INFORMATION 02 28 ...

Page 3: ...1 DESCRIPTION OF EACH CONTROL OPERATION Wall mounted type INVERTER ...

Page 4: ... NORMAL START UP Compressor frequency soon after starting is controlled as below Maximum frequency Compressor SVB130FJDMC Time Forced 40 rps operation for 60 seconds from start up 60 sec 240 sec 280 sec 360 sec 400 sec 40 rps 90 rps 77 rps 56 rps 99 rps ...

Page 5: ... in Table1 However the maximum frequency is limited in the range shown in Fig 1 based on the indoor fan mode and the outdoor temperature If the room temperature is some degrees lower than set temperature the compressor will be stopped Outdoor temperature drops Outdoor Table 1 temperature rises Limit of maximum speed based on outdoor temperature Outdoor temp zone Hi Indoor fan mode Me Lo Quiet A zo...

Page 6: ...ps 46 rps 32 rps 87 rps 87 rps 87 rps 87 rps 87 rps 87 rps 102 rps 102 rps 102 rps A sensor room temperature thermistor built in the indoor unit body will usually perceive difference or variation between set temperature and present room temperature and controls the operation frequency of the compressor Minimum frequency Maximum frequency AOYG09KMCBN AOYG12KMCBN AOYG14KMCBN 10 rps 87 rps 10 rps 87 ...

Page 7: ... C Ts 1 5 C Ts 0 5 C Ts 1 5 C Maximum compressor frequency is defined by zone Zone is defined by set temperature and room temperature 20 rps 16 rps 0 rps AOYG09KMCBN X zone J zone Y zone 22 rps 18 rps 0 rps AOYG12KMCBN X zone J zone Y zone Room temperature drops Room temperature rises Ts Set temperature 26 rps 18 rps 0 rps AOYG14KMCBN ...

Page 8: ... mode from among the Heating Cooling Dry and Monitoring modes During operation the optimum mode is automatically switched in accordance with temperature changes The temperature can be set between 18 C and 30 C in 1 C steps NO Ts 2 C YES YES NO NO NO NO YES YES HEATING OPERATION COOLING OPERATION Ts 2 C Room temp Room temp When air conditioner is set to AUTO mode by remote control operation starts ...

Page 9: ...vention 1 380 rpm 600 rpm 680 rpm 930 rpm 1 160 rpm 1 320 rpm 1 380 rpm 480 rpm 600 rpm 710 rpm 980 rpm 1 160 rpm 1 280 rpm 1 320 rpm X zone 680 rpm J zone 660 rpm 1 420 rpm 670 rpm 750 rpm 990 rpm 1 220 rpm 1 360 rpm 1 420 rpm 480 rpm 600 rpm 770 rpm 1 040 rpm 1 220 rpm 1 330 rpm 1 360 rpm X zone 750 rpm J zone 730 rpm Soft Quiet Note During Economy operation and operation mode is Fan air flow is...

Page 10: ...On the other hand if switched in Hi Quiet indoor motor will run at a constant airflow of Cool operation modes Quiet Lo Me Hi as the previous page Fig Airflow changeover Cooling Auto When room temperature rises When room temperature drops TR Room temperature Ts Setting temperature TR Ts 2 C 1 C TR Ts 2 C TR Ts 1 C TR Ts 2 5 C 1 5 C TR Ts 2 5 C TR Ts 1 5 C Hi mode Me mode Lo mode 4 DRY OPERATION As ...

Page 11: ...r heat exchanger temperature drops Powerful Hi Lo Cool air prevention 39 C 37 C 37 C 32 C 28 C S Lo Normal operation Powerful operation 5 HEATING OPERATION Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as below On the other hand if switched in Hi Quiet the indoor motor will run at a constant airflow of Heat operation modes Quiet Lo Me Hi as the previous ...

Page 12: ...tion control 7 MOISTURE RETURN PREVENTION CONTROL COOLING AND DRY MODE 9 DEFROST OPERATION Switch the airflow at cooling mode and the indoor fan motor will run as shown in the above Fig It depends on the Function setting Indoor unit fan control for energy saving 8 CONTROL FOR ENERGY SAVING COOLING MODE Fig Indoor fan control Compressor ON OFF Indoor fan Setting air flow Indoor fan as shown in the ...

Page 13: ...ry Y zone Fan step 9 8 7 6 5 Dry Outside air temperature zone selection 21 C 10 C Outside air temperature rises Outside air temperature drops Z zone Y zone F zone G zone 12 C 2 C 19 C 0 C 4 3 2 1 630 rpm 630 rpm 510 rpm 510 rpm 400 rpm 400 rpm 400 rpm 400 rpm 870 rpm 870 rpm 770 rpm 770 rpm 1 050 rpm 1 050 rpm 1 050 rpm 1 050 rpm 1 030 rpm 630 rpm 510 rpm 400 rpm 400 rpm 870 rpm 770 rpm 1 050 rpm ...

Page 14: ...ON In heating operation fan speed is defined by compressor frequency S Hi1 Hi Fan step S Hi2 10 9 8 7 6 5 510 rpm 1 100 rpm 670 rpm 1 100 rpm Fan speed 1 100 rpm 850 rpm 760 rpm 1 100 rpm 1 100 rpm 4 3 2 1 420 rpm 420 rpm 470 rpm 420 rpm ...

Page 15: ...ve When you set the angle to position 4 7 for more than 30 minutes in cooling or dry operation they automaticaly returnto position 3 In cooling or dry operation when the angle is set to position 4 7 for many hours condensation may be formed and the drips may wet your property During AUTO or Heating mode operation for the first a few minutes after beginning operation air flow will be horizontal 1 t...

Page 16: ...winging range Cooling Dry mode Fan mode Range Heating mode Fan mode The SWING operation may stop temporarily when the air conditioner s fan is not operating or when operating at very low speeds 3 ADJUST RIGHT LEFT LOUVERS You can move right left louvers manually to adjust air flow direction Right left louvers Knob ...

Page 17: ...m timer allows 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 PROGRAM TIMER Stop mode Sto...

Page 18: ...p of operation In cooling operation When sleep timer is set the set temperature is increased 1 C It increases the setting temperature another 1 C after 1 hour After that the set temperature is not changed and the operation is stopped at the time of timer setting Ts 1 C 2 C Set 60min In heating operation When the sleep timer is set the set temperature is decreased 1 C It decreases the set temperatu...

Page 19: ...oor temperature More than 62 min Does not operate Condition Condition Compressor integrating operation time Condition Tn 9 C and Tn Ta 5deg Tn 5 C Less than 40 min More than 40min Integrating defrost Constant monitoring More than 240 min For long continuous operation Less than 10min 1 For intermittent operation 3 C More than 213 min For long continuous operation 5 C OFF count of the compressor 40 ...

Page 20: ...d Tn Ta 5 C Outdoor heat exchanger temperature Below 5 C Compressor integrating operation Over 40 min 2nd and later defrost Integrating defrost Constant monitoring Defrost Indicator Operation lamp 7 sec ON 2 sec OFF Defrost start Compressor OFF count 40 times Less than 10min 1st defrost Compressor integrating operation Over 62 min Compressor integrating operation Over 240 min Outdoor heat exchange...

Page 21: ...g the heating operation it stops after performing the automatic defrosting operation In heating operation the outdoor heat exchanger temperature is less than 4 C compressor continuous operation more than 10 minutes and compressor operation integrating time lasts for more than 30 minutes 2 OFF DEFROST END CONDITION Defrost operation is released when outdoor heat exchanger temperature rises 16 C or ...

Page 22: ...ature In this case keep on pressing the MANUAL AUTO button of indoor unit for more than 10 seconds Operation indicator lamp and timer indicator lamp will begin to flash simultaneously during cooling test run Then heating test run will begin in about 3 minutes when HEAT is selected by remote control operation To end test operation press remote control START STOP button Compressor won t enter operat...

Page 23: ... the operation is controlled as shown below When the power was interrupted by a power failure etc during operation 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...

Page 24: ...re Setting temp 1 C Setting temp 1 C 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 started When operation was started and when the outdoor temperature rises to 7 C or greater preheating is en...

Page 25: ...ill operate at the maximum power Release condition is as follows Cooling Dry Room temperature Set temperature 1 5 C or Operation time has passed 20 minutes COMPRESSOR FREQUENCY Maximum FAN CONT MODE Powerful SETTING LOUVER Cooling Dry 3 Heating 6 Heating Room temperature Set temperature 1 5 C and Operation time has passed 20 minutes ...

Page 26: ... discharge temperature becomes higher than 104 C compressor frequency is decreased 20rps and it continues to decrease the frequency for 20rps every 120 seconds until temperature becomes lower than 101 C When discharge temperature becomes lower than 101 C control of compressor frequency is released When discharge temperature becomes higher than 110 C compressor is stopped and the indoor unit LED st...

Page 27: ...at the outdoor unit input current does not exceeds current limit value that was set up with outdoor temperature Compressor frequency returns to the designated frequency of indoor unit at the time when the frequency becomes lower than the release value Cooling Dry operation OT Control Release 4 5A 4 0A 50 C OT Control Release 4 5A 4 0A 50 C AOYG09KMCBN AOYG12KMCBN AOYG14KMCBN OT Control Release 4 5...

Page 28: ...2 TROUBLESHOOTING WALL MOUNTED type INVERTER ...

Page 29: ... green When you use a wireless remote control lamp on the photo detector unit will output error codes by way of blinking patterns When you use a wired remote control error codes will appear on remote control display See lamp blinking patterns and error code table Error display is displayed only during operation ...

Page 30: ...ized error codes may be displayed for the indoor unit connected to the remote control 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 selec...

Page 31: ...imes Continuous 1 times 5 times Outdoor unit main PCB error 2 times 6 times Continuous Continuous 4 times 7 times 6 times 1 times Continuous 7 times 3 times Continuous 7 times 4 times Continuous PFC circuit error Discharge thermistor error Heat Ex liquid outlet thermistor error Outdoor thermistor error 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Continuous 8 times 4 times Current sensor error ...

Page 32: ...tion 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 AC207V AC230V 10 253V AC230V 10 appears at Outdoor Unit Terminal L N Check Point 4 Check Serial Signal Reverse Transfer Sig...

Page 33: ... 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 AC207V AC230V 10 253V AC230V 10 appears at Outdoor Unit Terminal L N Check Point 4 Check Serial Signal Reverse Trans...

Page 34: ...rect the followings Check the connection of terminal between 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 CNC01 terminal 1 3 of UTY XCBXZ2 Communication kit Power supply to Remote Control If it is DC13V Remote Control is failure Controller PCB is normal Replace Remote Control I...

Page 35: ...harmonic wave near the power cable Neon light bulb 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 partia...

Page 36: ...s ON for consecutive 60 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 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 disab...

Page 37: ...e 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 and check terminal voltage at Thermistor DC5 0V If the voltage...

Page 38: ...n 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 and check terminal voltage at Thermistor DC5 0V If the v...

Page 39: ...ation 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 is continued more than 56 seconds 02 11 Check Poi...

Page 40: ...open voltage drop 2 Main PCB failure Check Point 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...

Page 41: ... not improve the symptom change main PCB Check Point 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...

Page 42: ...orrecting the removed connector or mis wiring reset the power Check 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 Troubleshooting 17 If the Fan Motor is failure replace it Check...

Page 43: ...oved 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...

Page 44: ...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 16 Check Point 3 Check Point 3 Check voltage of Main PCB DC5 0V Make sure circuit diagram of o...

Page 45: ...s 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 17 Check Point 3 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...

Page 46: ...lectric components 2 External cause 3 Main PCB failure 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 Check the comple...

Page 47: ...er on heat 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 compressor succeeds No obstructions in air passages Heat exchange fins clogged Outd...

Page 48: ...on Check if cable is open Upon correcting the removed connector or mis wiring reset the power Refer to PARTS INFORMATION 2 For Compressor Terminal Main PCB If it does not succeed even if the compressor is started 50 times it will become 3 minutes ST If it does not succeed even after repeating this 3 sets the compressor will stop permanently If the three phase current is less than the single phase ...

Page 49: ... Check 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 ...

Page 50: ...er Check Point 3 Check the solenoid coil and 4 way valve Remove CN30 from PCB and check the resistance value of coil Resistance value is 1 88k 2 29k 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 10degC Heating operation Indoor heat exchanger temp Room temp 10degC If the same operation is repeated 5 times...

Page 51: ... heat exchanger Check for foreign object at heat exchanger Check if fan can be rotated by hand Motor check PARTS INFORMATION 5 Check Point 2 Check the EEV strainer Check Point 5 Check the refrigerant amount Leak check EEV open Strainer clogging check before and after EEV Check Point 2 Check the EEV strainer If the 3 way valve was closed open the 3 way valve and check operation Check Point 1 Check ...

Page 52: ...fective 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 24 3 TROUBLESHOOTING WITH NO ERROR CODE Check Point 3 Check Electrical Components YES YES NO Check the voltage of power supply Check if AC207 253V appears...

Page 53: ...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 AC207 253V appears at Outdoor Unit Terminal L N Check Fuse in Main PC...

Page 54: ...emoved 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 bulb or electric equipment that may cause harmonic wave Check the com...

Page 55: ...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 56: ...n 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 hos...

Page 57: ...ompressor 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 ...

Page 58: ...B W W GLASS TERMINAL V V U U Inverter compressor Check terminal connection of Compressor loose or incorrect wiring Check winding resistance 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 02 30 Resistance value 1 91Ω at 20 C ...

Page 59: ...nit electronic expansion valve EEV Check connection of connector P30 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 ...

Page 60: ...oltage Vm No function No function Earth terminal GND Control voltage Vcc Speed command Vsp Feed back FG 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 test Vm...

Page 61: ...3 3 17 Suenaga Takatsu ku Kawasaki 213 8502 Japan 1809S0104 ...

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