Fujitsu AB* G24LVLA Service Instruction Download Page 18

Page: 18 / 75

1-8. COMPRESSOR CONTROL

1. OPERATION FREQUENCY RANGE

The operation frequency of the compressor is different based on the operation mode as
shown in Table 8.

Cooling

Heating

Min

Max

Min

Max

Dry

(Table 8 : Compressor Operation Frequency Range)

2. OPERATION FREQUENCY CONTROL AT START UP

The compressor frequency soon after the start-up is controlled as shown in Figure 12.

(Fig.12 : Compressor Control at Start-up)

40rps

90sec

180sec

270sec

59rps

01-13

AO*G12LALL

18rps

80rps

18rps

120rps

34rps

AO*G14LALL
AO*G18LALL

18rps

113rps

18rps

120rps

34rps

85rps

AMP Air Conditioning

www.ampair.co.uk | [email protected]

Summary of Contents for AB* G24LVLA

Page 1: ...or unit AO G12LALL AO G14LALL AO G18LALL SERVICE INSTRUCTION R410A AU G12LVLB AU G14LVLB AU G18LVLB AR G12LLTB AR G14LLTB AR G18LLTB AB G18LVTB Floor Ceiling type Slim Duct type Cassette type INVERTER AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 2: ...MINUTES 3 MINUTES ST 18 ECONOMY OPERATION 14 AUTO RESTART 21 DRAIN PUMP OPERATION 19 FRESH AIR CONTROL 22 DEFROST OPERATION CONTROL 01 01 01 02 01 02 01 03 01 05 01 09 01 10 01 13 01 14 01 18 01 18 01 18 01 19 01 20 01 20 01 21 20 EXTERNAL ELECTRICAL HEATER CONTROL 01 20 01 22 23 OFF DEFROST OPERATION CONTROL 01 24 24 VARIOUS PROTECTIONS 01 25 25 FORCED COOLING OPERATION 01 26 26 COMPRESSOR STOP C...

Page 3: ...WITH NO ERROR CODE 2 4 SERVICE PARTS INFORMATION 02 01 02 01 02 02 2 1 3 OUTDOOR UNIT DISPLAY 02 02 02 25 02 03 02 30 3 1 2 Procedures to change the Function Setting 3 1 1 INDOOR UNIT 3 1 FUNCTION SETTING 3 APPENDING DATA 03 01 03 01 03 04 3 2 2 OUTDOOR UNIT 3 2 1 INDOOR UNIT 3 2 Thermistor Resistance Values 03 07 03 07 03 07 AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 4: ...AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 5: ...R410A FLOOR CEILING SLIM DUCT CASSETTE type INVERTER 1 DESCRIPTION OF EACH CONTROL OPERATION AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 6: ...g temperature the compressor frequency is controlled within the range shown in Table1 minimum frequency maximum frequency 18rps 113rps 18rps 80rps Outdoor air temperature A zone B zone C zone D zone E zone F zone Hi Me Lo Quiet A zone 113rps 113rps 80rps 54rps 66rps 66rps 54rps 45rps 54rps 54rps 45rps 38rps 34rps 34rps 34rps 24rps 80rps 80rps 80rps 49rps 49rps 49rps 49rps 38rps 42rps 42rps 42rps 3...

Page 7: ...frequency is controlled within the range shown in Table2 Table 2 Compressor Frequency Range 01 02 minimum frequency maximum frequency 18rps 120rps 18rps 120rps AB G18LVTB AR G14 18LLTB AU G14 18LVLB AR G12LLTB AU G12LVLB Operating frequency 34rps 34rps AB G18LVTB AR G14 18LLTB AU G14 18LVLB AR G12LLTB AU G12LVLB 1 3 DRY OPERATION 1 3 1 INDOOR UNIT CONTROL The compressor rotation frequency shall ch...

Page 8: ...eaches set temperature 2 C during Dry mode operation returns to Cooling 1 1 2 Fig 3 Outdoor temperature zone selection Cooling Autmatic dry Operation mode If it s Middle zone operation mode of indoor unit is selected as below 1 Same operation mode is selected as outdoor unit If outdoor unit is operating in Cooling Dry and Heating mode indoor unit will be operated by the same operation mode 2 Selec...

Page 9: ...r System stops or operation command other than auto changeover operation NO Thermostat remains in OFF state for 6 minutes or longer System stops or operation command other than auto changeover operation Middle zone NO Operation mode of outdoor unit Cooling or Dry YES NO Operation mode of outdoor unit Heating YES NO YES Outdoor temperature 25 C NO YES YES NO YES YES AMP Air Conditioning www ampair ...

Page 10: ...low mode Speed rpm 1340 1240 1140 1030 500 1340 1240 1140 1030 500 1030 500 Dry Monitoring Cooling Fan Heating AR G12LLTB Hi Me Lo Quiet S Lo Hi Me Lo Quiet Soft Quiet Auto S Lo Operation mode Air flow mode Speed rpm 1560 1400 1240 1030 500 1560 1400 1240 1030 500 1030 500 Dry Monitoring Cooling Fan Heating AR G14LLTB Hi Me Lo Quiet S Lo Hi Me Lo Quiet Soft Quiet Auto S Lo Operation mode Air flow ...

Page 11: ...e Me Lo Lo Quiet Quiet Soft Quiet Hi Me Me Lo Quiet Cool air prevention S Lo Hi Me Lo Quiet Soft Quiet Auto S Lo Operation mode Air flow mode Speed rpm 830 770 730 630 500 400 300 730 630 540 460 400 460 300 Dry Monitoring Cooling Fan Heating AU G18LVLB Hi Me Me Lo Quiet Cool air prevention S Lo Hi Me Lo Quiet Soft Quiet Auto S Lo Operation mode Air flow mode Speed rpm 830 770 730 630 500 400 300 ...

Page 12: ...run according to a room temperature as shown in Figure 5 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 Table 5 Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as shown in Figure 7 On the other hand if switched HIGH QUIET the indoor motor will run at a const...

Page 13: ...door heat exchanger temperature rises Indoor heat exchanger temperature drops Hi Me or setting fan mode Lo or setting fan mode Cool air prevention 39 C 37 C 37 C 32 C 24 C S Lo S Lo 37 C Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops Lo 32 C Auto 39 C Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops Lo 34 C Auto During Normal Heating ...

Page 14: ...ction on heating mode except economy operation its speed becomes 950rpm 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 than 5 C Over than 12 C Less than 12 C Over than 12 C Less than 12 C C...

Page 15: ...e 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 mode operation for the first minute after beginning oper...

Page 16: ...n 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 above The remote control unit s display ...

Page 17: ...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 1 2 3 4 Stop mode means Operation stop During Cooling Dry mode Fan mode During Heating mode During AUTO mode operation for the first minute after...

Page 18: ... Compressor Operation Frequency Range 2 OPERATION FREQUENCY CONTROL AT START UP The compressor frequency soon after the start up is controlled as shown in Figure 12 Fig 12 Compressor Control at Start up 40rps 90sec 180sec 270sec 59rps 01 13 AO G12LALL 18rps 80rps 18rps 120rps 34rps AO G14LALL AO G18LALL 18rps 113rps 18rps 120rps 34rps 85rps AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 19: ...o set operating time for each day of the week Operation mode The operating time can be set in 30 min increments only The OFF time can be carried over to next day The ON timer and the OFF timer functions cannot be set with using the weekly timer Both ON and OFF time must be set 2 WEEKLY TIMER 2 1 WEEKLY TIMER Stop mode Stop mode Stop mode Operation mode Operation mode Set time Set time Set time Set...

Page 20: ...ssed Normal Next day setting If the operating time carries over to the next day during a next day setting the effective DAY OFF range will be set as shown below 2 2 DAY OFF setting 3 TEMPERATURE SET BACK TIMER Stop mode Stop mode Operation mode Stop mode Operation mode Preceding day Next day DAY OFF Stop mode Stop mode Operation mode Stop mode Operation mode DAY OFF Setting day Preceding day Next ...

Page 21: ...AM 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 operation cannot be combined with ON timer oper...

Page 22: ... 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 temperature is decreased 1 degC It ...

Page 23: ...ture 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 the last initialization and 3 minutes has passed after the compressor stop If 12 hours has passed since the last initiali...

Page 24: ...ation was started and when the outdoor temperature rises to 7 C or greater preheating is ended 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 resumed with the memorized operation contents Table 9 Operation contents memorized when the power is interrupted Operation mode S...

Page 25: ... 20 Fig 13 Fresh air control Fig 14 External electrical heater control Operation Stop Operation Stop Fan motor Indoor unit Fan motor for Fresh Air When the room temperature rises When the room temperature drops Ts Setting temperature Heater OFF Heater ON Heater OFF Ts 10 C Ts 1 C Ts 3 C Ts 12 C When the compressor stop External electrical heater is OFF 1 18 ECONOMY OPERATION Mode Cooling Dry Heati...

Page 26: ...ts Cooling operation 1 1 2 1 When the water level in the drain pan rises up and then the float switch functions Drain pump operates continuously for 3 minutes after the float switch is turned off Almost condensing water may be drained 2 When the float switch turns ON continuously for 3 minutes FAILURE INDICATION operates Thereafter even if the float switch turns OFF the FAILURE INDICATION is not r...

Page 27: ...Defrost operation is released when the conditions become as shown in Table 14 Table 14 Defrost Release Condition Operation temperature Below 10 min Above 10 min Less than 35 min 35 min to 215min 215 min to 4 hours Does not operate 6 C 5 C More than 4 hours 3 C Compressor integrating operation time Compressor contiguous operation time Operation temperature Below 10 min Above 10 min Defrosting after...

Page 28: ...ration Over 240 minutes Compressor integrating operation Over 62 minutes to below 240 minutes Outdoor HEX temp Below 9 C Outdoor HEX temp Below 5 C Outdoor HEX temp Below 3 C In case of 1st defrost In case of 2nd and later defrost Outdoor temp Outdoor HEX temp Above 5 degC Compressor integrating operation Over 35 minutes to below 215 minutes Outdoor HEX temp Below 6 C Compressor integrating operat...

Page 29: ...r 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 Compressor ON time Over 15 mi...

Page 30: ...omes lower than the release value Table 15 Current Release Operation Value Release Value Heating Cooling OT Outdoor Temperature OT Control Release 7 0A 6 5A 9 0A 8 5A 10 5A 10 0A 12 0A 11 5A 17 C 12 C OT Outdoor Temperature 5 C AO G14LALL AO G18LALL AO G14LALL AO G18LALL OT Control Release 6 5A 6 0A 8 0A 7 5A 8 5A 8 0A 9 5A 9 0A 17 C 12 C OT Outdoor Temperature 5 C AO G12LALL AO G12LALL OT Control...

Page 31: ...AUTO button is pressed more than 10 seconds During the forced cooling operation it keeps operation regardless of detection value of room temperature sensor Operation LED and Timer LED light up while the unit is on the forced cooling operation The forced cooling operation is released after 60 minutes from starting time Cooling Heating 1 25 FORCED COOLING OPERATION 1 26 COMPRESSOR STOP CONTROL When ...

Page 32: ...AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 33: ...2 TROUBLE SHOOTING R410A FLOOR CEILING SLIM DUCT CASSETTE type INVERTER AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 34: ...7 times 3 times Continuous 7 times 4 times Continuous PFC circuit error Discharge temp sensor error Outdoor unit Heat Ex liquid temp sensor error Outdoor temp sensor error 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Continuous 10 times 3 times Compressure temp error Continuous Continuous 5 times 9 times 9 times 7 times Compressor rotor position detection error permanent stop Outdoor u...

Page 35: ... 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 MOTU WETH 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 0 1sec ON 0 1sec OFF 1 ERROR DISPLAY...

Page 36: ...n abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198V AC220V 10 264V AC240V 10 appears at outdoor unit terminal L N When the indoor unit cannot receive the serial sign...

Page 37: ...ck any loose or removed connection line of between indoor unit and outdoor unit If there is an abnormal condition correct it by referring to Installation Manual or Data Technical Manual Check connection condition in control unit If there is loose connector open cable or mis wiring Check Point 3 Check the voltage of power supply Check the voltage of power supply Check if AC198V AC220V 10 264V AC240...

Page 38: ...correct the followings Check the connection of terminal between Wired Remote Controller and indoor unit and check if there is a disconnection of the cable When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more 02 05 Refer to error code table If it is DC12V Remote Control is failure Controller PCB is normal Replace Remote Control If it is DC 0V Con...

Page 39: ... indoor unit Check the total capacity of the connected indoor units If abnormal condition is found correct it by referring to Installation Manual or Design Technical Manual 02 06 Trouble shooting 4 INDOOR UNIT Error Method Indicate or Display Indoor unit capacity error Refer to error code table Check Point 2 Replace Main PCB If Check Point 1 do not improve the symptom replace Main PCB of Outdoor u...

Page 40: ...t causes 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...

Page 41: ...al auto switch failure 2 Controller PCB and Indicator PCB failure Check Point 1 Check the Manual auto switch Check if Manual auto switch is kept pressed Check ON OFF switching operation by using a meter If Manual auto switch is disabled on off switching replace it Check Point 2 Replace Controller PCB and Indicator PCB If Check Point 1 do not improve the symptom replace Controller PCB and Indicator...

Page 42: ...thermistor error Refer to error code table Check Point 3 Check voltage of Controller PCB DC5 0V Make sure circuit diagram of each indoor unit and check terminal voltage at Thermistor DC5 0V If the voltage does not appear replace Controller PCB H E MID Thermistor Room Temp Thermistor AU G12 14 18LVLB AR G12 14 18LLTB BLACK BLACK 1 2 1 2 1 1 2 2 1 1 2 2 CN5 CN8 GRAY GRAY 1 2 CN7 1 2 1 2 1 2 1 2 1 2 ...

Page 43: ...Characteristics Rough value If Thermistor is either open or shorted replace it and reset the power Check Point 2 Remove connector and check Thermistor resistance value Resistance Value Temperature C Resistance Value Temperature C 1131 9 579 6 312 3 233 2 176 0 134 2 103 3 80 3 62 9 49 7 39 6 31 7 25 6 20 8 17 1 14 1 11 6 10 4 30 20 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 63 Resistance Value Temp...

Page 44: ...ration 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 Check Point 4 ...

Page 45: ...witch is abnormal replace it ON OFF OK Forecast of Cause 1 Float switch failure 2 Shorted connector wire 3 Controller PCB failure 4 Drain pump failure 5 Hose clogging Check Point 2 Check Connector CN 9 Wire Check loose contact of CN9 shorted wire pinched wire Replace Float switch if the wire is abnormal Check Point 4 Check Controller PCB If Check Point 1 3 do not improve the symptom change Control...

Page 46: ...ic 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 partial cont...

Page 47: ...ck 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 electric equipment that may cause harmonic ...

Page 48: ...error code table Detective Actuators Detective details Forecast of Cause Check Point 1 Replace Main PCB Outdoor unit Main PCB 1 Main PCB failure Change Main PCB When the signal from FO terminal of IPM in Main PCB is L 0V while the compressor stops AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 49: ...e power Check Point 2 Remove connector and check Thermistor resistance value 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 02 16 THERMISTOR DISCHARGE THERMISTOR PIPE MID THERMISTOR PIPE THERMISTOR COMP THERMISTOR OUTDOOR BLACK BLACK BLACK CN70 CN72 CN73 CN71 1 ...

Page 50: ... or mis wiring reset the power Check Point 2 Remove connector and check Thermistor resistance value 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 02 17 Refer to error code table Resistance Value k Temperature C Resistance Value k Temperature C 30 20 10 0 10 20 ...

Page 51: ...ng reset the power Check Point 2 Remove connector and check Thermistor resistance value 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 02 18 Refer to error code table Thermistor Characteristics Approx value If Thermistor is either open or shorted replace it and ...

Page 52: ...c components 2 Outdoor fan operation failure 3 Outdoor heat exchanger clogged 4 Compressor failure 5 Main PCB failure Check if connector is removed Check if the terminal connection is loose Check erroneous connection Check if cable is open Upon correcting the removed connector or mis wiring reset the power Check Point 2 Check Outdoor fan Heat exchanger Is there anything obstructing the air distrib...

Page 53: ...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 the compressor stops After the compressor restarts if the same operation is repeated within 40sec the compress...

Page 54: ...ain 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 5 times in a row co...

Page 55: ...int 2 Check thermistor of Indoor unit Isn t it fallen off the holder Is there a cable pinched Check characteristics of thermistor Refer to Trouble shooting 7 8 If defective replace the thermistor Indoor unit Controller PCB Heat exchanger temperature thermistor Room temperature thermistor 4 way valve When the indoor heat exchanger temperature is compared with the room temperature and either followi...

Page 56: ...check If the 3 way valve gas side was closed open the 3 way valve gas side and check operation 02 23 Check Point 1 Check if 2 way valve liquid side is open If the 2 way valve liquid side was closed open the 2 way valve liquid side and check operation OK Detective Actuators Detective details Forecast of Cause Trouble shooting 21 OUTDOOR UNIT Error Method Discharge temp error Indicate or Display Ref...

Page 57: ...TION 5 Check Point 2 Check the EEV strainer Check Point 5 Check the refrigerant amount Leak check EEV open Strainer clogging check Refer to PARTS INFORMATION 3 Check Point 2 Check the EEV strainer If the 3 way valve gas side was closed open the 3 way valve gas side and check operation 02 24 Check Point 1 Check if 2 way valve liquid side is open If the 2 way valve liquid side was closed open the 2 ...

Page 58: ...place Varistor Upon checking the normal power supply replace Varistor OK Check Fuse of between of Terminal and Power supply PCB Indoor unit If Fuse is open check if the wiring between Terminal and Power supply PCB Indoor unit is loose and replace Fuse Check Point 4 Replace Power supply PCB Indoor unit If Check Point 1 3 do not improve the symptom replace Power supply PCB Indoor unit OK Check Point...

Page 59: ...here 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 the voltage of power supply Check if AC198 26...

Page 60: ...e 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 If the symptom does not change by above Check 1 2 3 re...

Page 61: ...w 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 clogged Refer to the figure at ...

Page 62: ...mal 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 hose failure Diagnosis method w...

Page 63: ...d 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 Compressor part broken or valve defectiv...

Page 64: ...eck 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 31 R R RED S S WHITE C T BLACK Main PCB Resistance Value 0 73 at 20 C AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 65: ...iner normally does not have temperature difference between inlet and outlet as shown in but if there is a difference as shown in there is a possibility of inside clogged In this case replace Strainer Check Point 2 Check Coil of EEV Yellow Brown Orange Red Blue Brown White Red Read wire 46 4 Resistance value Check Point 4 Check voltage from Main PCB Check Point 3 Check noise at start up DC at 20 C ...

Page 66: ...ion Ground 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 test Vm and GND terminal Vm ...

Page 67: ...3 APPENDING DATA R410A FLOOR CEILING SLIM DUCT CASSETTE type INVERTER AMP Air Conditioning www ampair co uk sales ampair co uk ...

Page 68: ... in the 3 way outlet mode For AU type Select the setting values in the table below according to the height of the ceiling Factory setting Setting Description Function Number Setting Value Standard Long interval Short interval No indication 11 00 01 02 03 1 1 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 fil...

Page 69: ...ontrol Warmar control 30 00 01 02 03 Depending on the installed environment the room temperature sensor may require a correction The settings may be selected as shown in the table below When using floor console installation change the setting value to 01 For AB AR type When using floor console installation change the setting value to 01 For AB AR type Select appropriate static pressure according t...

Page 70: ...ue is 00 room temperature is controlled by the indoor unit temperature sensor If setting value is 01 room temperature is controlled by either indoor unit temperature sensor or remote control unit sensor 1 9 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 A B C D 44 00 ...

Page 71: ...ly again for more than 5 secondsto cancel the function setting mode In addition the function setting mode will be automatically canceled after 1 minute if no operation is performed Unit number of Indoor unit Function number SU MO TU WE TH FR SA Setting value Settings will not be changed if invalid numbers or setting values are selected The settings may be selected between the following two Functio...

Page 72: ...e that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code The signal code that is set through this process are applicable only to the signal in the FUNCTION SETTING For details on how to set the signal code through the normal process refer to SELECTING THE REMOTE CONTROLLER SIGNAL CODE Function Number Setting Value 10 CHEAT 2 Press the FAN ...

Page 73: ...p 1 Use the following steps to select the signal code of the remote controller Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code REMOTE CONTROLLER SIGNAL CODE SETTING The remote controller resets to signal code when the batteries in the remote controller are replaced If you use a signal code other than signal code reset the signa...

Page 74: ... 0 60 0 65 0 70 0 75 0 80 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 1013 1 729 1 531 6 392 3 292 9 221 1 168 6 129 8 100 9 79 1 62 5 49 8 40 0 32 4 26 3 21 6 17 8 14 8 12 3 10 3 8 7 7 4 6 3 5 4 4 6 4 0 3 4 3 0 2 6 2 3 2 0 0 06 0 09 0 12 0 16 0 21 0 28 0 36 0 46 0 57 0 71 0 86 1 03 1 23 1 43 1 65 1 88 2 11 2 34 2 57 2 79 3 00 3...

Page 75: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan April 2012 Printed in Japan AMP Air Conditioning www ampair co uk sales ampair co uk ...

Search results

Summary of Contents for AB* G24LVLA

Reviews:

Related manuals for AB* G24LVLA

Brands by name

Popular brands

Fujitsu AB* G24LVLA, Service Instruction

Search results

Summary of Contents for AB* G24LVLA

Reviews:

Related manuals for AB* G24LVLA

Brands by name

Popular brands