Fujitsu AB Series A18LATN Service Instruction Download Page 68

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7 . TROUBLE SHOOTING

R410A

Large Ceiling type

INVERTER

Summary of Contents for AB Series A18LATN

Page 1: ...LIT TYPE ROOM AIR CONDITIONER Large Ceiling type Models Indoor unit Outdoor unit AB A18LATN AB A24LATN AB A36LATN AB A45LATN AO A18LACL AO A24LACL AO A36LATL AO A45LATL INVERTER SERVICE INSTRUCTION R410A ...

Page 2: ...1 SPECIFICATIONS R410A INVERTER Large Ceiling type ...

Page 3: ... D 252 800 39 9 252 800 53 2 Fin pich 1 30 1 45 Rows x Stages 3 12 4 12 Pipe type Fin type Material Colour Net Gross Net 27 60 27 60 Gross 36 79 36 79 Liquid 6 35 1 4 in 6 35 1 4 in Gas 12 70 1 2 in 15 88 5 8 in Method Flare Flare C 18 to 32 18 to 32 RH 80 or less 80 or less Heating C 30 or less 30 or less mm Note Specifications are based on the following conditions Cooling Indoor temperature of 2...

Page 4: ...or less mm Note Specifications are based on the following conditions Cooling Indoor temperature of 27 CDB 19 CWB and outdoor temperature of 35 CDB 24 CWB Heating Indoor temperature of 20 CDB 15 CWB and outdoor temperature of 7 CDB 6 CWB Pipe length 7 5 m Height difference 0 m Outdoor unit Indoor unit The maximum current and the maximum input value are the maximum value when operated within the ope...

Page 5: ... type Fin type Material Colour Net Gross Net 27 60 27 60 Gross 36 79 36 79 Liquid 6 35 1 4 in 6 35 1 4 in Gas 12 70 1 2 in 15 88 5 8 in Method Flare Flare C 18 to 32 18 to 32 RH 80 or less 80 or less Heating C 30 or less 30 or less mm Note Specifications are based on the following conditions Cooling Indoor temperature of 27 CDB 19 CWB and outdoor temperature of 35 CDB 24 CWB Heating Indoor tempera...

Page 6: ... less mm Note Specifications are based on the following conditions Cooling Indoor temperature of 27 CDB 19 CWB and outdoor temperature of 35 CDB 24 CWB Heating Indoor temperature of 20 CDB 15 CWB and outdoor temperature of 7 CDB 6 CWB Pipe length 7 5 m Height difference 0 m Outdoor unit Indoor unit The maximum current and the maximum input value are the maximum value when operated within the opera...

Page 7: ...ht difference 0 m Outdoor unit Indoor unit Cooling Heating Dimensions H W D Charge Type Material Colour Motor output Cooling Heating Fin pich Type Model name Power source Available voltage range C Operation range Fan Airflow rate m 3 h dB A mm mm Weight kg lb Dimensions H W D Net Gross Net Gross Refrigerant oil Enclosure Heat exchanger type Rows x Stages Pipe type Fin type Type Q ty Motor output T...

Page 8: ... Type Material Motor output Cooling Heating Dimensions H W D Type Model name Power source Available voltage range 1290 900 330 98 216 107 236 15 88 5 8 in Flare 15 to 46 15 to 24 1430 1050 445 9 52 3 8 in Copper Aluminium Steel sheet Beige 10YR7 5 1 0NN Twin Rotary 1 3750 R410A POE 3350 INVERTER HEATPUMP 230V 50Hz 198 264V 50Hz Propeller 2 m Connection pipe Size mm Liquid Gas Method Max length Max...

Page 9: ...ht difference 0 m Outdoor unit Indoor unit Cooling Heating Dimensions H W D Charge Type Material Colour Motor output Cooling Heating Fin pich Type Model name Power source Available voltage range C Operation range Fan Airflow rate m 3 h dB A mm mm Weight kg lb Dimensions H W D Net Gross Net Gross Refrigerant oil Enclosure Heat exchanger type Rows x Stages Pipe type Fin type Type Q ty Motor output T...

Page 10: ... Type Material Motor output Cooling Heating Dimensions H W D Type Model name Power source Available voltage range 1290 900 330 98 216 107 236 15 88 5 8 in Flare 15 to 46 15 to 24 1430 1050 445 9 52 3 8 in Copper Aluminium Steel sheet Beige 10YR7 5 1 0NN Twin Rotary 1 3750 R410A POE 3350 INVERTER HEATPUMP 240V 50Hz 198 264V 50Hz Propeller 2 m Connection pipe Size mm Liquid Gas Method Max length Max...

Page 11: ...2 DIMENSIONS R410A INVERTER Large Ceiling type ...

Page 12: ...5 Wall bracket Side of set 1 Refrigerant piping flare connection Gas Refrigerant piping flare connection Liquid Drain piping connection Knock out hole for drain piping Knock out hole for refrigerant piping Hole for lifting bolt Use M10 screw bolt 2 3 4 5 6 1 2 3 4 5 6 3 1 2 Side view Rear view Bottom view ...

Page 13: ...nsions Space Required for Installation 10 155 300 INDOOR UNIT Suspension bolt should extend outward 30 to 75 1 Refrigerant piping flare connection Gas Refrigerant piping flare connection Liquid Drain piping connection Knock out hole for fresh air Knock out hole for refrigerant piping Hole for lifting bolt Use M10 screw bolt 2 3 4 5 6 ...

Page 14: ...bracket Side of set 1 Refrigerant piping flare connection Gas Refrigerant piping flare connection Liquid Drain piping connection Knock out hole for drain piping Knock out hole for refrigerant piping Hole for lifting bolt Use M10 screw bolt 2 3 4 5 6 1 2 3 4 5 6 3 1 2 Side view Rear view Bottom view ...

Page 15: ...nsions Space Required for Installation 10 155 300 INDOOR UNIT Suspension bolt should extend outward 30 to 75 1 Refrigerant piping flare connection Gas Refrigerant piping flare connection Liquid Drain piping connection Knock out hole for fresh air Knock out hole for refrigerant piping Hole for lifting bolt Use M10 screw bolt 2 3 4 5 6 ...

Page 16: ...02 05 MODELS AO A18 24LACL Unit mm Air flow Top view Front view AO A18L AO A24L Side view Bottom view ...

Page 17: ...02 06 MODEL AO A36 45LATL Unit mm 900 1290 77 31 21 370 9 400 650 151 99 196 170 4 Ø12mm hole 12 330 Air flow Drain cap mounting places Top view Side view Bottom view Front view ...

Page 18: ...AOTA24L AOTA18L 02 07 MODELS AOTA18 24LACL Unit mm Air flow Top view Front view Side view Bottom view ...

Page 19: ...02 08 MODEL AOTA36 45LATL Unit mm 900 1290 77 31 21 370 9 400 650 151 99 196 170 4 Ø12mm hole 12 330 Air flow Drain cap mounting places Top view Side view Bottom view Front view ...

Page 20: ...3 REFRIGERANT SYSTEM DIAGRAM R410A INVERTER Large Ceiling type ...

Page 21: ...03 01 MODEL AB A18 24LATN AO A18 24LACL 3 REFRIGERANT CIRCUIT ...

Page 22: ...03 02 MODEL AB A36 45LATN AO A36 45LATL ...

Page 23: ...03 03 MODEL ABTA18 24LATN AOTA18 24LACL ...

Page 24: ...03 04 MODEL ABTA36 45LATN AOTA36 45LATL ...

Page 25: ...4 CIRCUIT DIAGRAM R410A INVERTER Large Ceiling type ...

Page 26: ...04 01 MODEL AB A18 24LATN 4 CIRCUIT DIAGRAM ...

Page 27: ...04 02 MODEL AB A36 45LATN ...

Page 28: ...04 03 MODEL ABTA18 24LATN ...

Page 29: ...04 04 MODEL ABTA36 45LATN ...

Page 30: ...04 05 MODEL AO A18 24LACL ...

Page 31: ...04 06 MODEL AO A36 45LATL ...

Page 32: ...04 07 MODEL AOTA18 24LACL ...

Page 33: ...04 08 MODEL AOTA36 45LATL ...

Page 34: ...5 DESCRIPTION OF EACH CONTROL OPERATION R410A Large Ceiling type INVERTER ...

Page 35: ...N AB A45LATN Outdoor air temperature Table 1 Compressor Frequency Range Fig 1 Limit of Maximum Frequency based on Outdoor Temperature 05 01 5 DESCRIPTION OF EACH CONTROL OPERATION AB A18LATN A zone 113Hz 66Hz 54Hz 34Hz AB A36LATN A zone B zone 113Hz 66Hz 54Hz 34Hz B zone C zone 80Hz 54Hz 45Hz 34Hz C zone D zone 54Hz 45Hz 38Hz 24Hz D zone E zone 54Hz 45Hz 38Hz 24Hz E zone F zone 54Hz 45Hz 38Hz 24Hz...

Page 36: ...e maximum frequency is limited in the range shown in Figure 2 based on the outdoor temperature Table 2 Compressor Frequency Range Fig 2 Limit of Maximum Frequency based on Outdoor Temperature 05 02 minimum frequency maximum frequency AB A18LATN 18Hz 18Hz 18Hz 18Hz 120Hz 120Hz 90Hz 90Hz AB A24LATN AB A36LATN AB A45LATN AB A18LATN C zone 120Hz 101Hz 75Hz 60Hz 19 C C zone B zone 120Hz 101Hz 75Hz 60Hz...

Page 37: ... A18LATN 34Hz 34Hz 31Hz 31Hz AB A24LATN AB A36LATN AB A45LATN Room temperature Room temperature Compressor ON Ts 1 5 C Ts 0 5 C Compressor OFF Fig 3 Compressor Control based on Room Temperature Ts Setting temperature Compressor ON OFF Indoor fan Dry air flow S Lo OFF Fig 4 Indoor Fan Control 10 30 60 180 60 180 60 10 30 sec AB A18LATN Dry air flow 740rpm S Lo 300rpm AB A24LATN Dry air flow 780rpm ...

Page 38: ... A zone B zone C zone 32 C 15 C Outdoor temperature zone When COOLING was selected at the air conditioner operates as follow The same operation as COOLING OPERATION of item 5 1 above is performed However the setting temperature is raised 1 C and the room temperature correct coefficient value is 0 C When the compressor frequency have been below 20Hz for 8 minutes or the room temperature reaches set...

Page 39: ...e Speed rpm Hi 1100 910 750 650 Me Lo Cooling Qu Hi 1100 1000 910 750 Me Me Heating Lo Operation mode Air flow mode Speed rpm Hi 1200 1000 830 680 Me Lo Cooling Qu Hi 1200 1100 1000 830 Me Me Heating Lo 650 Qu 680 Qu Auto 650 Dry S Lo 250 Monitoring Auto 680 Dry S Lo 250 Monitoring 3 COOLING OPERATION Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as show...

Page 40: ... 8 based on the detected temperature by the indoor heat exchanger sensor on heating mode When the compressor does not operate the indoor fan motor operates S Lo mode Fig 7 Airflow change over Heating AUTO Fig 8 Cool Air Prevention Control Hi setting Hi Me Lo Cool air prevention 39 C 37 C 37 C 32 C 24 C 39 C 32 C Indoor heat exchanger temperature Indoor heat exchanger temperature The other of Hi se...

Page 41: ...nds After operating the defrost control function on heating mode except economy operation its speed becomes 950rpm AB A18L and 1050rpm AB A24L regardless of the compressor frequency However it returns to the normal speed control when the defrosting operation does not function for 240 minutes after releasing the defrost operation or when the outdoor temperature sensor detection value becomes higher...

Page 42: ...nds after starting up the outdoor fan When the outdoor heat exchanger temperature is lower than 2 C the fan speed switches to 850rpm Upper fan and 750rpm Lower fan on heating mode 05 08 Table 8 Fan speed of the outdoor unit AB A36 45LATN have two fan motors Cooling Heating Upper fan Lower fan 850 780 520 400 350 300 280 rpm 850 780 350 200 170 150 rpm 780 750 350 200 170 150 rpm 780 750 520 350 28...

Page 43: ...AB A18 24LATN When the swing signal is received from the remote controller the vertical louver starts to swing The range of swing depends on the set airflow direction When the indoor fan is either at S Lo or Stop mode the swinging operation is interrupted and the louver stops at the memorized position Stop mode means Operation stop During Cooling Dry mode During Heating mode Fan mode During AUTO m...

Page 44: ...ts to swing The range of swing depends on the set airflow direction When the indoor fan is either at S Lo or Stop mode the swinging operation is interrupted and the louver stops at the memorized position Stop mode means Operation stop The type of operation Cooling Dry Range of swing to Heating to 5 FAN to 5 RIGHT LEFT air direction louvers Use the air direction adjustments within the ranges shown ...

Page 45: ...PERATION AB A36 45LATN When the swing signal is received from the remote controller the vertical louver starts to swing The range of swing depends on the set airflow direction When the indoor fan is either at S Lo or Stop mode the swinging operation is interrupted and the louver stops at the memorized position Stop mode means Operation stop During Cooling Dry mode During Heating Fan mode During AU...

Page 46: ...s to swing The range of swing depends on the set airflow direction When the indoor fan is either at S Lo or Stop mode the swinging operation is interrupted and the louver stops at the memorized position Stop mode means Operation stop The type of operation Cooling Dry Range of swing to Heating to 5 FAN to 5 Use the air direction adjustments within the ranges shown above The remote control unit s di...

Page 47: ...he compressor frequency soon after the start up is controlled as shown in Figure 13 Fig 13 Compressor Control at Start up 40Hz 90sec 180sec 270sec 59Hz 05 13 AB A18LATN 18Hz 113Hz 18Hz 120Hz 34Hz AB A24LATN 18Hz 113Hz 18Hz 120Hz 34Hz 18Hz 77Hz 18Hz 90Hz 31Hz 18Hz 77Hz 18Hz 90Hz 31Hz AB A36LATN AB A45LATN 85Hz 2 2 For AB A36 45LATN The compressor frequency soon after the start up is controlled as s...

Page 48: ...Remote Controller ON TIMER OFF TIMER PROGRAM TIMER SLEEP 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 opera...

Page 49: ...n the cooling operation mode When the sleep timer is set the setting temperature is increased 1 degC It increases the setting temperature another 1 degC after 1 hour After that the setting temperature is not changed and the operation is stopped at the time of timer setting Ts 1degC 2degC 2degC 1degC 4degC 3degC Set 60min In the heating operation mode When the sleep timer is set the setting tempera...

Page 50: ...he discharge temperature sensor the indoor heat exchanger sensor the outdoor heat exchanger sensor and the outdoor temperature sensor Pulse range 60 480 pulse 1 Pulse range of EEV 2 The EEV is set up at 480 pulses when the compressor is stopped 3 Intialization Input of 528 pulses toward closing direction is operated under the following condition When the power is turned on 4 hours has passed since...

Page 51: ...uid 3 After 2 3minutes operation stops Close the 3 way valve gas within 1minute after operations stops 4 The LED will go out 3minutes after it stops Disconnect the power supply after confirming that the LED has gone out When the product is operating 1 Press the PUMP DOWN switch SW2 on the outdoor unit The LED on the outdoor unit circuit board starts flashing 1sec ON 1sec OFF repeated and operation...

Page 52: ...pressor contiguous operation time Defrost operation is released when the conditions become as shown in Table 13 Table 13 Defrost Release Condition Operation temperature Below 10 min Above 10 min Less than 35 min 35 min to 4 hours After 4 hours Does not operate 6 C 3 C Compressor integrating operation time Compressor contiguous operation time Operation temperature Below 10 min Above 10 min Defrosti...

Page 53: ...inutes to below 62 minutes Compressor integrating operation Over 240 minutes Compressor integrating operation Over 62 minutes to below 240 minutes Outdoor heat exchanger temperature Below 9 C Outdoor heat exchanger temperature Below 5 C Compressor integrating operation Over 35 minutes to below 240 minutes Outdoor heat exchanger temperature Below 6 C Compressor integrating operation Over 240 minute...

Page 54: ... will allow the heat exchanger to defrost and then stop In heating operation the outdoor heat exchanger temperature is less than 4 C and compressor operation integrating time lasts for more than 30 minutes and compressor operation contiguous time lasts for more than 10 minutes OFF Defrost Flow Chart Heating operation stop 2 OFF DEFROST END CONDITION Outdoor heat exchanger temperature Over 10 C or ...

Page 55: ...dity in the room without significantly lowering the room temperature During ECONOMY OPERATION the thermostat setting automatically changes according to the temperature to avoid Unnecessary cooling and heating for the most economical operation If the room is not cooled or heated well during economy operation select normal operation During the monitor period in the AUTO mode the air conditioner oper...

Page 56: ...rease the frequency for 10 Hz every 120 seconds until the temperature becomes lower than 105 C When the discharge temperature becomes lower than 100 C the control of the compressor frequency is released When the discharge temperature becomes higher than 115 C the compressor stops 1 2 For AB A 36 45LATN The compressor frequency is controlled so that the outdoor unit input current does not exceeds t...

Page 57: ... 5A 17 0A 14 0A 13 5A 14 0A 13 5A Outdoor unit fan speed UP LO T0 0 C 46 C T0 40 C 20 C T0 12 C 40 C T0 31 C 31 C T0 25 C 25 C T0 13 C 13 C T0 7 C 7 C T0 0 C 2 2 For AB A36 45LATN Table 13 2 Current Release Operation Value Release Value 3 ANTIFREEZING CONTROL Cooling and Dry mode The compressor frequency is decrease on cooling dry mode when the indoor heat exchanger temperature sensor detects the ...

Page 58: ...ection Control Compressor is OFF Hold AB A18 24LATN The compressor frequency is decreased 2Hz every 60seconds AB A36 45LATN The compressor frequency is decreased 5Hz every 60seconds Release of protection The forced cooling operation starts up when MANUAL AUTO button is pressed more than 10 seconds During the forced cooling operation it keeps operation regardless of detection value of room temperat...

Page 59: ...6 REFRIGERANT CAUTION R410A R410A CASSETTE type INVERTER ...

Page 60: ...and the ser vice port side are possible to open and close at the same time Thermistor vacuum gauge Fig 4 15 To remove moisture from the refrigerating cycle complete ly it is necessary to perform appropriate vacuum drying For that reason vacuum conditions can be confirmed cer tainly Vacuum valve Fig 4 16 This valve builts in a check valve and it is easily possible to vacuum a refrigerating cycle or...

Page 61: ...del with HFC R407C R410A model If you use existing pipes it may cause resolution of compressor oil by remaining mineral oil 3 8 15 88mm R410A 22 29 19 7 25 R22 R407C R22 R407C R22 R407C 19 4 23 20 27 3 4 19 05mm R410A 24 36 24 29 R22 R407C 23 7 29 24 Material Nominal diameter in 1 4 3 8 1 2 5 8 3 4 7 8 1 1 8 1 1 4 1 1 2 1 3 8 1 6 35 9 52 12 70 15 88 19 05 22 22 28 58 31 75 38 10 34 92 25 40 Outsid...

Page 62: ...efrigerant charge Do it always from the liquid phase side Don t charge from the gas phase side Compressor oil is changed Be careful to handle synthetic oil since it resolves easily by moisture and contamination Don t mix new synthetic oil and mineral oil It may cause trouble We developed new synthetic oil since HFC refrigerant doesn t dissolve in mineral for R22 oil 06 03 ...

Page 63: ... It is necessary to use the vacuum pump which can obtain the high vacuum condition Precaution on Tools Feature 2 New Refrigerant has Approx 1 6 times higher pressure than previous refrigerant R410A High Pressure Different point from previous one Diameter of Service port has been changed from 1 4 Flare to 5 16 Flare It requires the gauge manifold and charge hose exclusively for R410A It requires th...

Page 64: ...hase out schedule of HCFC according to Montreal protocol 1996 2010 2000 2004 2015 2020 2030 60 40 20 100 Year 80 HCFC consumption of 1989 CFC consumption of 1989 x 2 8 65 35 10 0 5 started control only service use total abolition 100 0 06 05 ...

Page 65: ...emical compound including chlorine and hydrogen ODP 0 02 01 HCFC Hydro Chloro Fluoro Carbon For example R22 for air conditioner R134a for Car air conditioner HFC3 Hydro Fluoro Carbon R407C for air conditioner Refrigerant characteristics R22 Composition wt R22 100 Boiling Point 40 8 Behavior Pressure at 54 5 C kPa 2 151 Temperature Glide deg 0 ODP 0 055 R407C R32 R125 R134a 23 25 52 43 6 zeotrope 2...

Page 66: ... Pressure Mpa 39 2 27 40 2 32 41 2 38 42 2 44 44 2 57 45 2 63 46 2 69 47 2 76 48 2 83 49 2 90 51 3 04 52 3 11 53 3 18 54 3 26 56 3 41 57 3 49 58 3 57 59 3 65 61 3 82 62 3 90 63 3 99 64 4 08 Desighed pressure of R410A refrigerant Pressure Temp Relation between R410A condensing temperature and saturated pressure Temp Pressure Advantage Disadvantage Suitable for R410A higher system performance Near A...

Page 67: ... Use better grade of material for sliding parts for securing good lubrication of sliding part as HFC refrigerant does not contain chloride Review insulating materials Increase pressure resistance strength CAUTION During storage due care must be taken so that foreign matters such as dust and water do not enter HEAT EXCHANGER Review the water contaminants controlling level Use thinner tube to increa...

Page 68: ...7 TROUBLE SHOOTING R410A Large Ceiling type INVERTER ...

Page 69: ... WIRED REMOTE CONTROLLER DISPLAY Pressure switch error Active filter module AFM error CT error Communication error indoor unit remote control Communication error Main PCB Display PCB Communication error Main PCB Display PCB IPM error Compressor rotor location cannot detect permanent stop Compressor temperature sensor error Compressor temperature error 4 way valve error 1 SELF DIAGNOSIS 1 2 5 6 7 8...

Page 70: ...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 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 Lower Raise ...

Page 71: ...rature sensor error Operation LED Blinking Pattern Normal operation OFF 5sec ON 1sec OFF 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 2sec ON 5sec OFF 5sec ON 2sec OFF Continuously lighting Protected operation 1sec ON 1sec OFF Pump down operation 0 5sec 0 5sec 2sec ON OFF 1 ERROR DISPLAY Outdoor LED Blink 1 to 16 times 0 5sec ON 0 5sec OFF blinking...

Page 72: ...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 CN14 terminal 1 3 of Controller PCB Power supply to Remote Control If it is DC12V Remote Control is failure Controller PCB is normal Replace Remote Control If it is DC 0V Contro...

Page 73: ...ic 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 connection between Outdoor Unit Main PCB and Filter PCB If there is loose connector or open cable Check Point 3 Check the voltage of power supply Check the voltage of power s...

Page 74: ...OR PIPE TEMP THERMISTOR ROOM TEMP GRAY GRAY BLACK BLACK CN5 CN7 CN8 1 2 1 2 1 2 1 2 Room Temperature Sensor Error Indoor Unit Controller PCB Circuit Room Temperature Thermistor When 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 erroneous connection Check if t...

Page 75: ...power ON 1 Connector connection failure 2 Thermistor failure 3 Controller PCB failure Check Point 1 Check connection of Connector 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 Check Point 2 Remove connector and check Thermistor resistance value Thermistor Characteristics Approx value If...

Page 76: ... THERMISTOR HEAT SINK BLACK BBROWN BLACK BLUE BROWN BLACK BLACK Outdoor Heat Exchanger Temperature Sensor Outlet Error Outdoor Unit Main PCB Circuit Heat Exchanger Temperature Thermistor Outlet When Heat Exchanger Temperature Thermistor Outlet open or short circuit is detected at power ON or while running the compressor 1 Connector connection failure 2 Thermistor failure 3 Main PCB failure Check P...

Page 77: ...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 Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor DC5 0V If the vol...

Page 78: ...k 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 Main PCB DC5 0V Make sure circuit diagram of outdoor unit and check terminal voltage at The...

Page 79: ...k Outdoor FAN Heat Exchanger Is there anything obstructing the air distribution circuit Is there any clogging of Outdoor Heat Exchanger 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 therm...

Page 80: ...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 Note EEPROM EEPROM Electronically Erasable and Programmable Read Only Memory is a non volatile memory which kee...

Page 81: ...tection by surrounding temperature rise 4 Control PCB 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...

Page 82: ...plete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave Check the voltage of power supply Check if AC198 264V appears at Outdoor Unit Terminal L N Check if Indicated value swings between AC70V and AC130V at Outdoor Unit Terminal 2 3 Check any loose or removed connection l...

Page 83: ...ther 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 PCB 07 15 For AB A18L 24L For AB A36L 45L THERMISTOR PIPE OUT THERMISTOR DISCHARGE THERMISTOR COMPRESSOR THERMISTOR PIPE MID THERMISTOR OUTDOOR BLACK CN70 CN72 CN73 CN...

Page 84: ...sure Switch failure 3 Main PCB failure When pressure switch open is detected in 10 seconds after the power is turned on Does abnormal LED indication show again Make sure circuit diagram of outdoor unit and check terminal voltage at Pressure Switch DC5 0V If the voltage does not appear replace Main PCB Check if connector is loose or cable is open If no abnormal connection is found replace Pressure ...

Page 85: ...he 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 Trouble shooting 19 If the Fan Motor is failure replace it Check Point 4 C...

Page 86: ...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 Point 1 1 Reset Power Supply and operate Does Error indication show again When Input Current Sensor has de...

Page 87: ...et the power Check Active Filter Module PARTS INFORMATION 3 If Active Filter Module is abnormal replace it Check Point 4 Replace Main PCB If Check Point 1 3 do 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...

Page 88: ...or is removed Check erroneous connection 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 While running the compressor if the detected rotor location is out of phase with actual rotor location more than 90 degrees the compressor stops After the compressor restarts if the same operation is repeat...

Page 89: ...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 stops If and repeats ...

Page 90: ...on ERROR CODE E 20 Trouble shooting 21 INDOOR UNIT INDOOR UNIT Error Method Indicate or Display Detective Actuators Detective details Forecast of Cause OK OK Indoor manual auto switch error Indoor Unit Controller PCB Circuit Forced auto switch When the Forced auto switch becomes ON for 30 consecutive seconds 1 Forced auto switch failure 2 Controller PCB failure Check Point 1 Check the Forced auto ...

Page 91: ...oor 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 19 If the Fan Motor is failure replace it Check Thermistor middle Refer to Trouble shooting 26 If the Thermistor middle is failure r...

Page 92: ...lace Main PCB If Check Point 1 2 do 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 w...

Page 93: ...or indication show again Check Point 1 2 Check external cause such as noise Check the complete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave Check Point 2 Check Connection Check connection between Main PCB and Display PCB If there is loose connector or open cable Chec...

Page 94: ...or indication show again Check Point 1 2 Check external cause such as noise Check the complete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave Check Point 2 Check Connection Check connection between Main PCB and Display PCB If there is loose connector or open cable Chec...

Page 95: ...R THERMISTOR HEAT SINK BLACK BBROWN BLACK BLUE BROWN BLACK BLACK Outdoor Heat Exchanger Temperature Sensor Middle Error Outdoor Unit Main PCB Circuit Heat Exchanger Temperature Thermistor Middle When Heat Exchanger Temperature Thermistor Middle open or short circuit is detected at power ON or while running the compressor 1 Connector connection failure 2 Thermistor failure 3 Main PCB failure Check ...

Page 96: ...at Exchanger Is there anything obstructing the air distribution circuit Is there any clogging of Outdoor Heat Exchanger 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 Compressor Thermistor Isn t it fallen off the holder Is there a cable pinched Check characteristics of thermistor Refer to ...

Page 97: ...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 about 1 4k If it is Open or abnormal resistance value replace Solenoid Coil 07 29 Outdoor Unit No indication 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 r...

Page 98: ...sor Error Outdoor Unit Main PCB Circuit Heat Sink Temperature Thermistor When Heat Sink Temperature Thermistor open or short circuit is detected at power ON or while running the compressor 1 Connector connection failure 2 Thermistor failure 3 Main PCB failure Check Point 1 Check connection of Connector Check if connector is removed Check erroneous connection Check if thermistor cable is open Upon ...

Page 99: ...ssor 1 Defective connection of electric components 2 Main PCB failure 3 Compressor failure Check Point 2 Check connection of around the Compressor components OK OK OK OK Check Point 3 Replace Main PCB If Check Point 1 2 do not improve the symptom replace Main PCB Check if connector is removed Check erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring rese...

Page 100: ...s 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 Check Voltage of power supply Check AC198 264V appears at Indoor Unit Terminal 1 2 Power Supply Check Fuse in...

Page 101: ...efective 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 AC198 264V appears at Outdoor Unit Terminal L N YES YES Check Fuse in Main PCB If Fuse is open check loose termin...

Page 102: ... manual and Data Technical Manual 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 w...

Page 103: ...32 Check any objects 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 ...

Page 104: ...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 105: ...d 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 PARTS INFORMATION 4 If there is no failure the defect of Compressor can be considered Compres...

Page 106: ...ITE BLACK Compressor Inverter Compressor Check terminal connection of Compressor loose or incorrect wiring Check connection of Main PCB 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 Resistance Value 0 73 For AB A18L 0 97 For AB A24L 0 26 For AB A36L...

Page 107: ...etween P and N1 of compressor stopping and operating Terminal Resistance value L2 P P N2 L2 L2 Tester Tester Check the diode If it is abnormal replace ACTIVE FILTER MODULE 360k 0 360k 720k 5 4M approx 5 3M approx 5 8M approx 5 4M approx Active Filter Module Remove connector check the open or short circuit and the diode in the module If the output voltage of compressor operating is less than the ou...

Page 108: ... Outdoor unit Electronic Expansion Valve EEV Check connection of connector CN27 or 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 When Valve ...

Page 109: ...8 APPENDING DATA R410A INVERTER Large Ceiling type ...

Page 110: ...1 04 3 17 2 91 1 05 3 36 2 90 1 06 3 55 3 09 1 07 16 18 27 29 32 23 19 21 23 25 18 21 Outdoor temperature 12 15 CDB 10 0 5 20 10 15 AFR 13 3 46 25 30 35 40 Indoor temperature CDB CWB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 5 79 4 65 0 60 6 46 4 67 0 61 6 68 5 08 0 61 7 12 5 10 0 62 7 34 5 51 0 62 7 78 5 48 0 63 8 22 5 84 0 63 5 69 4 59 0 64 6 34 4 62 0 65 6 55 5 02 0 ...

Page 111: ...62 7 07 1 65 6 90 1 68 6 72 1 72 AFR CDB 13 3 24 16 11 7 Outdoor temperature 8 5 10 15 10 6 0 2 15 18 20 7 CDB CWB 15 3 24 10 Indoor temperature 5 16 18 20 22 TC PI TC PI TC PI TC PI TC PI 6 15 2 70 6 00 2 76 5 86 2 82 5 71 2 87 5 57 2 93 6 93 2 87 6 76 2 93 6 60 2 99 6 43 3 05 6 27 3 11 7 64 2 86 7 46 2 91 7 28 2 97 7 10 3 03 6 92 3 09 8 59 2 84 8 39 2 90 8 18 2 96 7 98 3 01 7 77 3 07 9 55 2 86 9...

Page 112: ... kW PI Power Input kW 16 18 27 29 32 23 19 21 23 25 18 21 Outdoor temperature 12 15 CDB 10 0 5 20 10 15 AFR 31 7 46 25 30 35 40 Indoor temperature 15 CDB CWB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 10 77 8 56 1 38 11 99 8 61 1 40 12 40 9 36 1 41 13 22 9 39 1 42 13 63 10 15 1 43 14 44 10 11 1 45 15 26 10 76 1 46 10 39 8 37 1 66 11 57 8 42 1 69 11 97 9 15 1 70 12 76 9 1...

Page 113: ...2 15 24 0 2 10 5 CDB CWB 15 18 20 7 3 10 15 10 6 AFR CDB 24 16 11 7 Outdoor temperature 8 5 TC PI TC PI TC PI TC PI TC PI 11 62 4 18 11 35 4 26 11 07 4 35 10 79 4 44 10 52 4 52 12 41 4 16 12 11 4 25 11 82 4 33 11 52 4 42 11 23 4 51 13 23 4 19 12 92 4 27 12 60 4 36 12 29 4 45 11 97 4 54 14 17 4 09 13 83 4 17 13 49 4 26 13 15 4 34 12 82 4 43 15 88 4 16 15 50 4 24 15 12 4 33 14 74 4 42 14 36 4 50 17 ...

Page 114: ... 04 3 17 2 91 1 05 3 36 2 90 1 06 3 55 3 09 1 07 16 18 27 29 32 23 19 21 23 25 18 21 12 15 CDB 10 0 5 20 10 15 AFR 13 3 46 25 30 35 40 CDB CWB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 5 79 4 65 0 60 6 46 4 67 0 61 6 68 5 08 0 61 7 12 5 10 0 62 7 34 5 51 0 62 7 78 5 48 0 63 8 22 5 84 0 63 5 69 4 59 0 64 6 34 4 62 0 65 6 55 5 02 0 65 6 98 5 04 0 66 7 20 5 44 0 66 7 63 5 ...

Page 115: ...62 7 07 1 65 6 90 1 68 6 72 1 72 AFR CDB 13 3 24 16 11 7 Outdoor temperature 8 5 10 15 10 6 0 2 15 18 20 7 CDB CWB 15 3 24 10 Indoor temperature 5 16 18 20 22 TC PI TC PI TC PI TC PI TC PI 6 15 2 70 6 00 2 76 5 86 2 82 5 71 2 87 5 57 2 93 6 93 2 87 6 76 2 93 6 60 2 99 6 43 3 05 6 27 3 11 7 64 2 86 7 46 2 91 7 28 2 97 7 10 3 03 6 92 3 09 8 59 2 84 8 39 2 90 8 18 2 96 7 98 3 01 7 77 3 07 9 55 2 86 9...

Page 116: ... kW PI Power Input kW 16 18 27 29 32 23 19 21 23 25 18 21 Outdoor temperature 12 15 CDB 10 0 5 20 10 15 AFR 31 7 46 25 30 35 40 Indoor temperature 15 CDB CWB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 10 77 8 56 1 38 11 99 8 61 1 40 12 40 9 36 1 41 13 22 9 39 1 42 13 63 10 15 1 43 14 44 10 11 1 45 15 26 10 76 1 46 10 39 8 37 1 66 11 57 8 42 1 69 11 97 9 15 1 70 12 76 9 1...

Page 117: ... kW PI Power Input kW 16 18 27 29 32 23 19 21 23 25 18 21 Outdoor temperature 12 15 CDB 10 0 5 20 10 15 AFR 31 7 46 25 30 35 40 Indoor temperature 15 CDB CWB TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI 10 77 8 56 1 38 11 99 8 61 1 40 12 40 9 36 1 41 13 22 9 39 1 42 13 63 10 15 1 43 14 44 10 11 1 45 15 26 10 76 1 46 10 39 8 37 1 66 11 57 8 42 1 69 11 97 9 15 1 70 12 76 9 1...

Page 118: ...o 32 C About 80 or less 10 to 46 C Heating About 30 C or less 15 to 24 C Operation Range Mode MODEL AB A36 45LATN AO A36 45LATL Indoor temperature Indoor humidity Outdoor temperature Cooling Dry 18 to 32 C About 80 or less 15 to 46 C Heating About 30 C or less 15 to 24 C Operation Range Mode 8 2 OPERATION RANGE ...

Page 119: ...ical Standard and Codes Committee E0005 2 Limited Wiring length This is the wiring length in case voltage descent is less than 2 When the wiring length becomes long please select the wiring of a more larger diameter Power Supply 1 Wiring Spec 230 50 3 5 4 5 Model name AB A36L AB A45L Voltage V Frequency Hz Max operating current Indoor unit A 0 7 0 8 Connection cable mm 2 1 5 2 5 1 5 2 5 Limited wi...

Page 120: ...eter Model Name AOTA18L AOTA24L Voltage V Frequency Hz Max Operating Current A 15 0 16 2 Starting Current A 7 7 10 0 Main Fuse Circuit breaker Current A 20 20 Power Cable mm 2 2 Limited wiring length m 24 22 Power Supply 1 Wiring Spec 240 50 3 5 4 5 Model name ABTA36L ABTA45L Voltage V Frequency Hz Max operating current Indoor unit A 0 7 0 8 Connection cable mm 2 1 5 2 5 1 5 2 5 Limited wiring len...

Page 121: ...After 40 minutes OFF 110 C ON After 7 minutes Current fuse NEAR THE TERMINAL Current fuse MAIN PRINTD CIRCUIT BOARD Protection form 20A 250V 5A 250V Model AO A36L AO A45L Current fuse NEAR THE TERMINAL Current fuse NEAR THE TERMINAL Current fuse MAIN PRINTED CIRCUIT BOARD Current fuse MAIN PRINTED CIRCUIT BOARD Fan motor protection Thermal protection program High Pressure Protection High Pressure ...

Page 122: ...able below according to the height of the ceiling The unit is factory set to 00 Factory setting Setting Description Function Number Setting Value Standard 2 500 hours Long interval 4 499 hours Short interval 1 250 hours High static pressure 3 21 00 01 02 03 1 2 Setting the Filter Sign The indoor unit has a sign to inform the user that it is time to clean the filter Select the time setting for the ...

Page 123: ...mote control unit sensor Factory setting Setting Description Function Number Setting Value Standard Lower control Slightly warmer control Warmer control 31 00 01 02 03 1 5 Setting the Heater Room Temperature Correction Depending on the installed environment the room temperature sensor may require a correction The settings may be changed as shown in the table below 8 5 2 Switching Remote Control Un...

Page 124: ...isplay flashes as shown to the right during setting value selection 7 After completing the FUNCTION SETTING be sure to turn off the power and turn it on again 5 Press the SET button to confirm the setting Press the SET button for a few seconds until the setting value stops flashing If the setting value display changes or if is displayed when the flashing stops the setting value has not been set co...

Page 125: ...e ON ON OFF 1 2 3 4 5 6 1 SW setting 1 1 Dual remote controller setting Number of remote controller DIP SW 1 No 2 DIP SW 1 No 2 Master unit Slave unit ON OFF OFF 1 Normal 2 Dual Set the remote controller DIP switch 1 No 2 according to the following table Factory setting Memory backup Invalidity DIP SW No 6 ON Validity OFF Factory setting Set to ON to use batteries for the memory backup if batterie...

Page 126: ...9 INSTALLATION MANUAL R410A INVERTER Large Ceiling type ...

Page 127: ...nifold harge hose cuum pump akage detector or Console Under Ceiling DualType 6 35 mm 1 4 in 9 52 mm 3 8 in 12 70 mm 1 2 in 15 88 mm 5 8 in 19 05 mm 3 4 in 0 80 mm 0 80 mm 0 80 mm 1 00 mm 1 20 mm Pipe outside diameter Thickness Thicknesses of Annealed Copper Pipes R410A CONNECTION PIPE REQUIREMENT CAUTION Refer to the installation instruction sheet of the outdoor unit for description of the length ...

Page 128: ...ally 3 Do not air flow direction louvers operate normally 4 Is the drain normal 5 Is there any abnormal noise and vibration during operation Do not operate the air conditioner in the running state for a long time Test running When the air conditioner is run by pressing the remote control unit test run button the OPERATION and TIMER lamps flash slowly at the same time Using the wireless remote cont...

Page 129: ...hacksaw etc INDOORUNIT TOPVIEW Airfilter Intakegrille Tapping screw INDOORUNIT Side cover A Right side Side cover B Left side Side cover B Right side Diameter Gas 15 88 mm 5 8 in Drilling position for Suspension bolt Ceiling Wall Template Drillingpositionforpiping 40 mm Ceiling Opening 1580 mm 40mm Ceiling panel Ceiling Opening 640 mm 15mm Suspension bolt should extend outward 30 to 50 mm INDOORUN...

Page 130: ...t op erations 2 Air filter removal and cleaning and how to use the air louvers 3 Give the operating and installation manuals to the customer 4 If the signal code is changed explain to the customer how it changed the system returns to signal code A when the batteries in the remote control unit are replaced 4 is applicable to using wireless remote control Indoor unit 0 5s ON 0 5s OFF Flash OFF Troub...

Page 131: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan June 2007 Printed in Japan ...

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